{"header":{"message":"Cleaning up the unsized part","description":null,"timestamp":"2021-02-15T22:11:44.620274935Z","authors":[{"full_name":"Pierre-Étienne Meunier","name":"pmeunier"}]},"hash":"52X5P7NDBQHIJDIYNY3XUPDHHOO3PDPPNKGO2PGLXKVNM3EVECTQC","authors":[],"deps":{"hashes":[["52X5P7NDBQHIJDIYNY3XUPDHHOO3PDPPNKGO2PGLXKVNM3EVECTQC","Cleaning up the unsized part"],["AA",null],["TSMS6W4DOKQNUQ4PEMTLOIODR33VFPN6MMNS73ZPSU4BOQVRGPNAC","Fully commented implementation of Sized nodes + massive cleanup"],["OP6SVMOD2GTQ7VNJ4E5KYFG4MIYA7HBMXJTADALMZH4PY7OQRMZQC","Resetting history"],["6UVFCERMGSGNRWCVC3GWO5HWV6MSWE433DXBJVC7KRPP6LLJLCSQC","Formatting, debugging, etc."],["LROAI3NBBSCU4T2YA6EHJYKKKL75AU5A7C7WIRCGIQ56S6HPLRXQC","Two iterators (convenience functions), along with tests to move cursors (put and del still destroy cursors though)"],["73Z2UB3JGRLFNFORE7D64O4IHIFSZASD4G4FLJ4FJLHANT75MGIAC","Cleanup + comments"],["6DCQHIFPEH4GZKSRRS32GMKDRPZH4MTCGOUEI7YEUVKWENBF3JWAC","Minor changes after benchmarking"],["OTWDDJE7TTE73D6BGF4ZN6BH2NFUFLPME2VJ3CPALH463UGWLEIQC","Trait/type cleanup"],["QEUTVAZ4F4EJXRDMWDMYXF6XEDMX7YPVG4IIXEKPIR3K54E5W5OAC","Splitting btree::page"],["HN6Z5DU4WYMAIOOSNVHLIIMNF6Q53TNJ7YC27SLKWNXVYCTACQKQC","Cleanup"],["Q7DRIBBRE4MNG4NP3PVIXAJF5PQYLFWYIVK2O4VVLEO6XY3BOSFQC","Debugging replace (which cannot be del+put)"],["AOX2XQISHGWNNAFBYRN44Q6AWG7H5DPBK5YMFHK42HQNZ2TMHEJQC","Actually, with the correct functions, Unsized pages are always slower than Sized pages (especially for writing)"],["X3QVVQIS7B7L3XYZAWL3OOBUXOJ6RMOKQ45YMLLGAHYPEEKZ45ZAC","More debugging (del seems to work now)"],["T73WR2BX2QDQ6APOREBXUKNH52FDLJNBGWPQUYB2TAF2PT7XCL2AC","Cleaner RC increments for keys and values containing references + more comments in `del`"],["SQ7MD7OWKFYNQR525YNOG7APHDNMKB7PPVWLIYFJJQPL3MWNFXLQC","Unsized pages: decrement n on deletions"],["XEU2QVLCHPYOOD4TQIPEEVYOVSFMKFPLJYWEJYXYJAZ7S54KWDZAC","Debugging after plugging this into Pijul"],["APPY2E7M5NHNC6MFYXSVEKJVAILK7YAZVTVE3W75EK2JNFVS3XBQC","Unsized deletions + custom sizes back"],["SO25TWFLSRQIVTJTTSN77LO5FZQVQPIZTSBULH7MWBBDEWSK3OCAC","A few features for integrating it into Pijul"],["KX3WVNZW5KHVEH6EOQTZ4RBEFFJ3SGF5I467X3JWZ74PURRK4HVAC","Testing/debugging \"rebalance causes split of the root\""],["ESUI5EUZUBDPHNN3APU33IFORYPYR6J3WEMEZG57FKF3EH66ZBHAC","Making as_page() unsafe"],["QYDGYIZRNFRIQD7RUCY5YAN3F2THZA74E5UOHPIFWSULEJFAFVJQC","Split trait Representable into its mandatory part and an optional part"],["DV4A2LR7Q5LAEGAQHLO34PZCHGJUHPAMRZFGT7GUFNKVQKPJNOYQC","Double-inserts (rebalancing near an internal deletion)"],["MSRWB47YP6L5BVTS53QQPBOHY5SXTSTR5KD6IIF35UWCTEUOCQWQC","Deletions at immutable leaves weren't really deleting anything"],["7P43FPFAXMDYUIQV7U2DGPN4UI3RNHYFWEUEA22UBDSQTYBJRAQQC","When deleting in internal nodes, set the correct child"],["RV2L6CZWTMUQ2A52YDAFVHDFGURZL3H4SSCDC347UGN23D3J5KZQC","A few comments"],["LSQ6V7M66TEGLJ7QBLRVDX4E7UKJTDQTEXZOS3KGPGFKVXNLPKBQC","Cleanup + docs"],["OFINGD26ZWCRDVVDI2ZIBLMHXKEMJA6MRNLANJYUHQPIJLPA7J2AC","implementing prev() on cursors (+ some cleanup)"],["WS4ZQM4RMIHZ6XZKSDQJGHN5SSSWFL4H236USOPUA33S6RC53RFAC","Debugging, tests, etc."],["EAAYH6BQWDK52EC5RG3BEZQU3FJPN5RRRN4U5KDKDVPKXBVJMNDAC","Debugging put"],["G4JEQLLX6Q7VVFVAEJZAVQXX33MQ36CSCYSMJ5NQM5VZ76DXKU6QC","Debugging synchronisation"],["W26CFMAQOXMUK4ZOJMAN4SMBXMWFQHO7HCTEVW73FQSRMJZFGJIQC","Improving safety of cursors"],["H3FVSQIQGFCFKCPXVOSFHP4OSUOBBURJESCZNGQTNDAAD3WQSBEQC","Unsized pages"],["JEHCE5FNOINH47N5MZ2I7JP7DKGN24PW5TVDRVALRPZHTIQCMMDQC","Alignment in unsized splits"],["UAQX27N4PI4LHEW6LSHJETIE5MV7JTEMPLTJFYUBMYVPC43H7VOAC","Tests"]],"deps":["TSMS6W4DOKQNUQ4PEMTLOIODR33VFPN6MMNS73ZPSU4BOQVRGPNAC"],"known":["OP6SVMOD2GTQ7VNJ4E5KYFG4MIYA7HBMXJTADALMZH4PY7OQRMZQC","WS4ZQM4RMIHZ6XZKSDQJGHN5SSSWFL4H236USOPUA33S6RC53RFAC","EAAYH6BQWDK52EC5RG3BEZQU3FJPN5RRRN4U5KDKDVPKXBVJMNDAC","X3QVVQIS7B7L3XYZAWL3OOBUXOJ6RMOKQ45YMLLGAHYPEEKZ45ZAC","DV4A2LR7Q5LAEGAQHLO34PZCHGJUHPAMRZFGT7GUFNKVQKPJNOYQC","QEUTVAZ4F4EJXRDMWDMYXF6XEDMX7YPVG4IIXEKPIR3K54E5W5OAC","OTWDDJE7TTE73D6BGF4ZN6BH2NFUFLPME2VJ3CPALH463UGWLEIQC","H3FVSQIQGFCFKCPXVOSFHP4OSUOBBURJESCZNGQTNDAAD3WQSBEQC","6UVFCERMGSGNRWCVC3GWO5HWV6MSWE433DXBJVC7KRPP6LLJLCSQC","APPY2E7M5NHNC6MFYXSVEKJVAILK7YAZVTVE3W75EK2JNFVS3XBQC","JEHCE5FNOINH47N5MZ2I7JP7DKGN24PW5TVDRVALRPZHTIQCMMDQC","AOX2XQISHGWNNAFBYRN44Q6AWG7H5DPBK5YMFHK42HQNZ2TMHEJQC","G4JEQLLX6Q7VVFVAEJZAVQXX33MQ36CSCYSMJ5NQM5VZ76DXKU6QC","W26CFMAQOXMUK4ZOJMAN4SMBXMWFQHO7HCTEVW73FQSRMJZFGJIQC","6DCQHIFPEH4GZKSRRS32GMKDRPZH4MTCGOUEI7YEUVKWENBF3JWAC","KX3WVNZW5KHVEH6EOQTZ4RBEFFJ3SGF5I467X3JWZ74PURRK4HVAC","SO25TWFLSRQIVTJTTSN77LO5FZQVQPIZTSBULH7MWBBDEWSK3OCAC","OFINGD26ZWCRDVVDI2ZIBLMHXKEMJA6MRNLANJYUHQPIJLPA7J2AC","LROAI3NBBSCU4T2YA6EHJYKKKL75AU5A7C7WIRCGIQ56S6HPLRXQC","XEU2QVLCHPYOOD4TQIPEEVYOVSFMKFPLJYWEJYXYJAZ7S54KWDZAC","T73WR2BX2QDQ6APOREBXUKNH52FDLJNBGWPQUYB2TAF2PT7XCL2AC","MSRWB47YP6L5BVTS53QQPBOHY5SXTSTR5KD6IIF35UWCTEUOCQWQC","7P43FPFAXMDYUIQV7U2DGPN4UI3RNHYFWEUEA22UBDSQTYBJRAQQC","Q7DRIBBRE4MNG4NP3PVIXAJF5PQYLFWYIVK2O4VVLEO6XY3BOSFQC","SQ7MD7OWKFYNQR525YNOG7APHDNMKB7PPVWLIYFJJQPL3MWNFXLQC","73Z2UB3JGRLFNFORE7D64O4IHIFSZASD4G4FLJ4FJLHANT75MGIAC","RV2L6CZWTMUQ2A52YDAFVHDFGURZL3H4SSCDC347UGN23D3J5KZQC","HN6Z5DU4WYMAIOOSNVHLIIMNF6Q53TNJ7YC27SLKWNXVYCTACQKQC","ESUI5EUZUBDPHNN3APU33IFORYPYR6J3WEMEZG57FKF3EH66ZBHAC","LSQ6V7M66TEGLJ7QBLRVDX4E7UKJTDQTEXZOS3KGPGFKVXNLPKBQC","QYDGYIZRNFRIQD7RUCY5YAN3F2THZA74E5UOHPIFWSULEJFAFVJQC"]},"hunks":[{"Edit":{"inode":{"change":3,"pos":91},"path":"sanakirja-core/src/lib.rs","line":179,"atom":{"EdgeMap":{"edges":[{"previous":"","flag":"DELETED","from":{"change":3,"pos":168},"to":{"change":3,"start":1746,"end":1749},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":633},"to":{"change":3,"start":1746,"end":1749},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":1746},"to":{"change":3,"start":1746,"end":1749},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":1749},"to":{"change":3,"start":1868,"end":1965},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":1566},"to":{"change":3,"start":1833,"end":1969},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":1965},"to":{"change":3,"start":1833,"end":1969},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":228},"to":{"change":3,"start":1833,"end":1969},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":709},"to":{"change":3,"start":1833,"end":1969},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":1833},"to":{"change":3,"start":1833,"end":1969},"introduced_by":3}],"inode":{"change":3,"pos":91}}},"contents":[{"Del":"}\n\n"},{"Del":"fn alloc_size(k: &K, v: &V) -> usize {\n"},{"Del":" let s = ((k.size() + V::ALIGN - 1) & !(V::ALIGN - 1)) + v.size();\n let al = K::ALIGN.max(V::ALIGN);\n (s + al - 1) & !(al - 1)\n"}]}},{"Edit":{"inode":{"change":3,"pos":3448},"path":"sanakirja-core/src/btree/put.rs","line":41,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":4317}],"down_context":[{"change":3,"pos":0}],"flag":"BLOCK","start":0,"end":41,"inode":{"change":3,"pos":3448}}},"contents":[{"Add":" debug!(\"put {:?} {:?}\", key, value);"}]}},{"Replacement":{"inode":{"change":3,"pos":3448},"path":"sanakirja-core/src/btree/put.rs","line":127,"ins":{"up_context":[{"change":3,"pos":1695}],"down_context":[{"change":3,"pos":1696}],"flag":"BLOCK","start":42,"end":109,"inode":{"change":3,"pos":3448}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":1695},"to":{"change":3,"start":2192,"end":2242},"introduced_by":3}],"inode":{"change":3,"pos":3448}},"ins_contents":[{"Add":" debug!(\"Split {:?} {:?}\", split_key, split_value);"}],"del_contents":[{"Del":" debug!(\"Want to split the root\");\n"}]}},{"Edit":{"inode":{"change":3,"pos":3448},"path":"sanakirja-core/src/btree/put.rs","line":174,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":7298}],"down_context":[{"change":3,"pos":2134}],"flag":"BLOCK","start":110,"end":140,"inode":{"change":3,"pos":3448}}},"contents":[{"Add":" debug!(\"Ok\");"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":1,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":2014}],"down_context":[{"change":3,"pos":2015}],"flag":"BLOCK","start":141,"end":1005,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":"//! Implementation of B tree pages for Unsized types, or types with an"},{"Add":"//! dynamically-sized representation (for example enums with widely"},{"Add":"//! different sizes)."},{"Add":"//!"},{"Add":"//! This module follows the same organisation as the sized"},{"Add":"//! implementation, and contains types shared between the two"},{"Add":"//! implementations."},{"Add":"//!"},{"Add":"//! The types that can be used with this implementation must implement"},{"Add":"//! the [`UnsizedStorable`] trait, which essentially replaces the"},{"Add":"//! [`core::mem`] functions for determining the size and alignment of"},{"Add":"//! values."},{"Add":"//!"},{"Add":"//! One key difference is the implementation of leaves (internal nodes"},{"Add":"//! have the same format): indeed, in this implementation, leaves have"},{"Add":"//! almost the same format as internal nodes, except that their"},{"Add":"//! offsets are written on the page as little-endian-encoded [`u16`]"},{"Add":"//! (with only the 12 LSBs used, i.e. 4 bits unused)."},{"Add":""}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":24,"ins":{"up_context":[{"change":3,"pos":2054}],"down_context":[{"change":3,"pos":2066}],"flag":"BLOCK","start":1006,"end":1113,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":2054},"to":{"change":3,"start":2054,"end":2066},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":""},{"Add":"// The header is the same as for the sized implementation, so we share"},{"Add":"// it here."},{"Add":"pub(super) mod header;"}],"del_contents":[{"Del":"use log::*;\n"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":29,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":2067}],"down_context":[{"change":3,"pos":2076}],"flag":"BLOCK","start":1114,"end":1186,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":"// Like in the sized implementation, we have the same three submodules."}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":31,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":2087}],"down_context":[{"change":3,"pos":1018}],"flag":"BLOCK","start":1187,"end":1270,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":""},{"Add":"// This is a common module with the sized implementation."},{"Add":"pub(super) mod cursor;"},{"Add":""}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":36,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":1027}],"down_context":[{"change":3,"pos":2087}],"flag":"BLOCK","start":1271,"end":1297,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":"pub(super) mod rebalance;"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":38,"ins":{"up_context":[{"change":3,"pos":2101}],"down_context":[{"change":3,"pos":438}],"flag":"BLOCK","start":1298,"end":1313,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":2101},"to":{"change":3,"start":404,"end":437},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":437},"to":{"change":3,"start":2128,"end":2143},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":2128},"to":{"change":3,"start":2128,"end":2143},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":"use cursor::*;"}],"del_contents":[{"Del":"pub(in super::super) mod header;\n"},{"Del":"mod rebalance;\n"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":46,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":2325}],"down_context":[{"change":3,"pos":2325}],"flag":"BLOCK","start":1314,"end":9163,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":"}"},{"Add":""},{"Add":"// Many of these functions are the same as in the Sized implementations."},{"Add":"impl super::BTreePage"},{"Add":" for Page"},{"Add":"{"},{"Add":" fn is_empty(c: &Self::Cursor) -> bool {"},{"Add":" c.cur >= c.total as isize"},{"Add":" }"},{"Add":""},{"Add":" fn is_init(c: &Self::Cursor) -> bool {"},{"Add":" c.cur < 0"},{"Add":" }"},{"Add":" type Cursor = PageCursor;"},{"Add":" fn cursor_before(p: &crate::CowPage) -> Self::Cursor {"},{"Add":" PageCursor::new(p, -1)"},{"Add":" }"},{"Add":" fn cursor_after(p: &crate::CowPage) -> Self::Cursor {"},{"Add":" PageCursor::after(p)"},{"Add":" }"},{"Add":""},{"Add":" // Split a cursor, returning two cursors `(a, b)` where b is the"},{"Add":" // same as `c`, and `a` is a cursor running from the first element"},{"Add":" // of the page to `c` (excluding `c`)."},{"Add":" fn split_at(c: &Self::Cursor) -> (Self::Cursor, Self::Cursor) {"},{"Add":" ("},{"Add":" PageCursor {"},{"Add":" cur: 0,"},{"Add":" total: c.cur.max(0) as usize,"},{"Add":" is_leaf: c.is_leaf,"},{"Add":" },"},{"Add":" *c,"},{"Add":" )"},{"Add":" }"},{"Add":""},{"Add":" fn move_next(c: &mut Self::Cursor) -> bool {"},{"Add":" if c.cur < c.total as isize {"},{"Add":" c.cur += 1;"},{"Add":" true"},{"Add":" } else {"},{"Add":" false"},{"Add":" }"},{"Add":" }"},{"Add":" fn move_prev(c: &mut Self::Cursor) -> bool {"},{"Add":" if c.cur > 0 {"},{"Add":" c.cur -= 1;"},{"Add":" true"},{"Add":" } else {"},{"Add":" c.cur = -1;"},{"Add":" false"},{"Add":" }"},{"Add":" }"},{"Add":""},{"Add":" // This function is the same as the sized implementation for"},{"Add":" // internal nodes, since the only difference between leaves and"},{"Add":" // internal nodes in this implementation is the size of offsets (2"},{"Add":" // bytes for leaves, 8 bytes for internal nodes)."},{"Add":" fn current<'a, T: LoadPage>("},{"Add":" txn: &T,"},{"Add":" page: crate::Page<'a>,"},{"Add":" c: &Self::Cursor,"},{"Add":" ) -> Option<(&'a K, &'a V, u64)> {"},{"Add":" if c.cur < 0 || c.cur >= c.total as isize {"},{"Add":" None"},{"Add":" } else if c.is_leaf {"},{"Add":" unsafe {"},{"Add":" let off ="},{"Add":" u16::from_le(*(page.data.as_ptr().add(HDR + c.cur as usize * 2) as *const u16));"},{"Add":" let (k, v) = read::(txn, page.data.as_ptr().add(off as usize));"},{"Add":" Some(("},{"Add":" K::from_raw_ptr(txn, k as *const u8),"},{"Add":" V::from_raw_ptr(txn, v as *const u8),"},{"Add":" 0,"},{"Add":" ))"},{"Add":" }"},{"Add":" } else {"},{"Add":" unsafe {"},{"Add":" let off ="},{"Add":" u64::from_le(*(page.data.as_ptr().add(HDR + c.cur as usize * 8) as *const u64));"},{"Add":" let (k, v) = read::(txn, page.data.as_ptr().add((off & 0xfff) as usize));"},{"Add":" Some(("},{"Add":" K::from_raw_ptr(txn, k as *const u8),"},{"Add":" V::from_raw_ptr(txn, v as *const u8),"},{"Add":" off & !0xfff,"},{"Add":" ))"},{"Add":" }"},{"Add":" }"},{"Add":" }"},{"Add":""},{"Add":" // These methods are the same as in the sized implementation."},{"Add":" fn left_child(page: crate::Page, c: &Self::Cursor) -> u64 {"},{"Add":" assert!(c.cur >= 0);"},{"Add":" if c.is_leaf {"},{"Add":" 0"},{"Add":" } else {"},{"Add":" assert!(c.cur >= 0 && HDR as isize + c.cur * 8 - 8 <= 4088);"},{"Add":" let off ="},{"Add":" unsafe { *(page.data.as_ptr().add((HDR + c.cur as usize * 8) - 8) as *const u64) };"},{"Add":" u64::from_le(off) & !0xfff"},{"Add":" }"},{"Add":" }"},{"Add":" fn right_child(page: crate::Page, c: &Self::Cursor) -> u64 {"},{"Add":" assert!(c.cur < c.total as isize);"},{"Add":" if c.is_leaf {"},{"Add":" 0"},{"Add":" } else {"},{"Add":" assert!(c.cur < c.total as isize && HDR as isize + c.cur * 8 - 8 <= 4088);"},{"Add":" let off = unsafe { *(page.data.as_ptr().add(HDR + c.cur as usize * 8) as *const u64) };"},{"Add":" u64::from_le(off) & !0xfff"},{"Add":" }"},{"Add":" }"},{"Add":""},{"Add":" fn set_cursor<'a, T: LoadPage>("},{"Add":" txn: &'a T,"},{"Add":" page: crate::Page,"},{"Add":" c: &mut PageCursor,"},{"Add":" k0: &K,"},{"Add":" v0: Option<&V>,"},{"Add":" ) -> Result<(&'a K, &'a V, u64), usize> {"},{"Add":" unsafe {"},{"Add":" // `lookup` has the same semantic as"},{"Add":" // `core::slice::binary_search`, i.e. it returns either"},{"Add":" // `Ok(n)`, where `n` is the position where `(k0, v0)` was"},{"Add":" // found, or `Err(n)` where `n` is the position where"},{"Add":" // `(k0, v0)` can be inserted to preserve the order."},{"Add":" match lookup(txn, page, c, k0, v0) {"},{"Add":" Ok(n) => {"},{"Add":" c.cur = n as isize;"},{"Add":" if c.is_leaf {"},{"Add":" let off ="},{"Add":" u16::from_le(*(page.data.as_ptr().add(HDR + n * 2) as *const u16));"},{"Add":" let (k, v) = read::(txn, page.data.as_ptr().add(off as usize));"},{"Add":" Ok((K::from_raw_ptr(txn, k), V::from_raw_ptr(txn, v), 0))"},{"Add":" } else {"},{"Add":" let off ="},{"Add":" u64::from_le(*(page.data.as_ptr().add(HDR + n * 8) as *const u64));"},{"Add":" let (k, v) ="},{"Add":" read::(txn, page.data.as_ptr().add(off as usize & 0xfff));"},{"Add":" Ok(("},{"Add":" K::from_raw_ptr(txn, k),"},{"Add":" V::from_raw_ptr(txn, v),"},{"Add":" off & !0xfff,"},{"Add":" ))"},{"Add":" }"},{"Add":" }"},{"Add":" Err(n) => {"},{"Add":" c.cur = n as isize;"},{"Add":" Err(n)"},{"Add":" }"},{"Add":" }"},{"Add":" }"},{"Add":" }"},{"Add":"}"},{"Add":""},{"Add":"// There quite some duplicated code in the following function, because"},{"Add":"// we're forming a slice of offsets, and the using the core library's"},{"Add":"// `binary_search_by` method on slices."},{"Add":"unsafe fn lookup("},{"Add":" txn: &T,"},{"Add":" page: crate::Page,"},{"Add":" c: &mut PageCursor,"},{"Add":" k0: &K,"},{"Add":" v0: Option<&V>,"},{"Add":") -> Result {"},{"Add":" let hdr = header(page);"},{"Add":" c.total = hdr.n() as usize;"},{"Add":" c.is_leaf = hdr.is_leaf();"},{"Add":" if c.is_leaf {"},{"Add":" let s = core::slice::from_raw_parts("},{"Add":" page.data.as_ptr().add(HDR) as *const u16,"},{"Add":" hdr.n() as usize,"},{"Add":" );"},{"Add":" if let Some(v0) = v0 {"},{"Add":" s.binary_search_by(|&off| {"},{"Add":" let off = u16::from_le(off);"},{"Add":" let (k, v) = read::(txn, page.data.as_ptr().offset(off as isize));"},{"Add":" let k = K::from_raw_ptr(txn, k as *const u8);"},{"Add":" match k.compare(txn, k0) {"},{"Add":" Ordering::Equal => {"},{"Add":" let v = V::from_raw_ptr(txn, v as *const u8);"},{"Add":" v.compare(txn, v0)"},{"Add":" }"},{"Add":" cmp => cmp,"},{"Add":" }"},{"Add":" })"},{"Add":" } else {"},{"Add":" s.binary_search_by(|&off| {"},{"Add":" let off = u16::from_le(off);"},{"Add":" let (k, _) = read::(txn, page.data.as_ptr().offset(off as isize));"},{"Add":" let k = K::from_raw_ptr(txn, k);"},{"Add":" k.compare(txn, k0)"},{"Add":" })"},{"Add":" }"},{"Add":" } else {"},{"Add":" let s = core::slice::from_raw_parts("},{"Add":" page.data.as_ptr().add(HDR) as *const u64,"},{"Add":" hdr.n() as usize,"},{"Add":" );"},{"Add":" if let Some(v0) = v0 {"},{"Add":" s.binary_search_by(|&off| {"},{"Add":" let off = u64::from_le(off) & 0xfff;"},{"Add":" let (k, v) = read::(txn, page.data.as_ptr().offset(off as isize & 0xfff));"},{"Add":" let k = K::from_raw_ptr(txn, k);"},{"Add":" match k.compare(txn, k0) {"},{"Add":" Ordering::Equal => {"},{"Add":" let v = V::from_raw_ptr(txn, v);"},{"Add":" v.compare(txn, v0)"},{"Add":" }"},{"Add":" cmp => cmp,"},{"Add":" }"},{"Add":" })"},{"Add":" } else {"},{"Add":" s.binary_search_by(|&off| {"},{"Add":" let off = u64::from_le(off) & 0xfff;"},{"Add":" let (k, _) = read::(txn, page.data.as_ptr().offset(off as isize & 0xfff));"},{"Add":" let k = K::from_raw_ptr(txn, k);"},{"Add":" k.compare(txn, k0)"},{"Add":" })"},{"Add":" }"},{"Add":" }"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":273,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":2487}],"down_context":[{"change":3,"pos":2487}],"flag":"BLOCK","start":9164,"end":9209,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":" // The init function is straightforward."}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":279,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":2648}],"down_context":[{"change":3,"pos":0}],"flag":"BLOCK","start":9210,"end":9674,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":" // Deletions in internal nodes of a B tree need to replace the"},{"Add":" // deleted value with a value from a leaf."},{"Add":" //"},{"Add":" // In this implementation of pages, we never actually wipe any"},{"Add":" // data from pages, we're even only appending data, or cloning the"},{"Add":" // pages to compact them. Therefore, raw pointers to leaves are"},{"Add":" // always valid for as long as the page isn't freed, which can"},{"Add":" // only happen at the very last step of an insertion or deletion."}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":296,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":243}],"down_context":[{"change":3,"pos":3641}],"flag":"BLOCK","start":9675,"end":9753,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":" // As in the sized implementation, `put` is split into its own submodule."}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":309,"ins":{"up_context":[{"change":2,"pos":1176}],"down_context":[{"change":3,"pos":3909}],"flag":"BLOCK","start":9754,"end":9839,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":2,"pos":1176},"to":{"change":3,"start":381,"end":410},"introduced_by":2},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":3909},"to":{"change":3,"start":381,"end":410},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" debug_assert!(c.cur >= 0);"},{"Add":" debug_assert!(k1v1.is_none() || replace);"}],"del_contents":[{"Del":" assert!(c.cur >= 0);\n"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":340,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":4585}],"down_context":[{"change":3,"pos":4585}],"flag":"BLOCK","start":9840,"end":9908,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":" // Update the left child of the entry pointed to by cursor `c`."}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":346,"ins":{"up_context":[{"change":3,"pos":4718}],"down_context":[{"change":2,"pos":1177}],"flag":"BLOCK","start":9909,"end":9925,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":4718},"to":{"change":3,"start":4718,"end":4734},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" l: u64,"}],"del_contents":[{"Del":" r: u64,\n"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":351,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":2188}],"down_context":[{"change":3,"pos":5030}],"flag":"BLOCK","start":9926,"end":10049,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":" // If the page is dirty (allocated by this transaction)"},{"Add":" // and isn't shared, just make it mutable."}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":354,"ins":{"up_context":[{"change":3,"pos":5053}],"down_context":[{"change":3,"pos":5103}],"flag":"BLOCK","start":10050,"end":10076,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":5053},"to":{"change":3,"start":5053,"end":5103},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" MutPage(page)"}],"del_contents":[{"Del":" unsafe { core::mem::transmute(page) }\n"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":356,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":5120}],"down_context":[{"change":3,"pos":5120}],"flag":"BLOCK","start":10077,"end":10114,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":" // Else, clone the page:"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":359,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":5268}],"down_context":[{"change":3,"pos":3298}],"flag":"BLOCK","start":10115,"end":10150,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":" // Copy the left child"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":363,"ins":{"up_context":[{"change":3,"pos":5411}],"down_context":[{"change":3,"pos":5689}],"flag":"BLOCK","start":10151,"end":10441,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":5411},"to":{"change":3,"start":3364,"end":3432},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":3432},"to":{"change":3,"start":5479,"end":5506},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":421},"to":{"change":3,"start":5479,"end":5506},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":5479},"to":{"change":3,"start":5479,"end":5506},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":5506},"to":{"change":3,"start":3433,"end":3507},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":3507},"to":{"change":3,"start":2189,"end":2246},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":507},"to":{"change":3,"start":2189,"end":2246},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":5580},"to":{"change":3,"start":2189,"end":2246},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":2246},"to":{"change":3,"start":5652,"end":5689},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":5652},"to":{"change":3,"start":5652,"end":5689},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" // Copy all the entries"},{"Add":" let s = Internal::offset_slice(page.as_page());"},{"Add":" clone::(page.as_page(), &mut new, s, &mut 0);"},{"Add":" // Mark the old version for freeing."},{"Add":" freed = page.offset | if page.is_dirty() { 1 } else { 0 };"}],"del_contents":[{"Del":" let s = Internal::offset_slice::(page.as_page());\n"},{"Del":" let mut n = 0;\n"},{"Del":" clone::(page.as_page(), &mut new, s, &mut n);\n"},{"Del":" let b = if page.is_dirty() { 1 } else { 0 };\n"},{"Del":" freed = page.offset | b;\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":370,"ins":{"up_context":[{"change":3,"pos":5716}],"down_context":[{"change":3,"pos":5754}],"flag":"BLOCK","start":10442,"end":10646,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":5716},"to":{"change":3,"start":605,"end":652},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" // Finally, update the left children of the cursor. We know"},{"Add":" // that all valid positions of a cursor except the leftmost"},{"Add":" // one (-1) have a left child."},{"Add":" assert!(c.cur >= 0);"}],"del_contents":[{"Del":" assert!(c.cur < c.total as isize + 1);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":376,"ins":{"up_context":[{"change":3,"pos":5856}],"down_context":[{"change":3,"pos":5919}],"flag":"BLOCK","start":10647,"end":10710,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":5856},"to":{"change":3,"start":5856,"end":5919},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" *off = (l | (u64::from_le(*off) & 0xfff)).to_le();"}],"del_contents":[{"Del":" *off = (r | (u64::from_le(*off) & 0xfff)).to_le();\n"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":381,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":5967}],"down_context":[{"change":3,"pos":1190}],"flag":"BLOCK","start":10711,"end":10935,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":" // Here is how deletions work: if the page is dirty and mutable,"},{"Add":" // we \"unlink\" the value by moving the end of the offset array to"},{"Add":" // the left by one offset (2 bytes in leaves, 8 bytes in internal"},{"Add":" // nodes)."}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":392,"ins":{"up_context":[{"change":3,"pos":761}],"down_context":[{"change":3,"pos":2247}],"flag":"BLOCK","start":10936,"end":11071,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":3,"pos":761},"to":{"change":3,"start":653,"end":710},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":1340},"to":{"change":3,"start":653,"end":710},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" // Check that the cursor is at a valid position for a deletion."},{"Add":" debug_assert!(c.cur >= 0 && c.cur < c.total as isize);"}],"del_contents":[{"Del":" assert!(c.cur >= 0 && c.cur < c.total as isize);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":396,"ins":{"up_context":[{"change":3,"pos":6230}],"down_context":[{"change":3,"pos":6305}],"flag":"BLOCK","start":11072,"end":11114,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":6230},"to":{"change":3,"start":6230,"end":6305},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" let mut page = MutPage(page);"}],"del_contents":[{"Del":" let mut page: MutPage = unsafe { core::mem::transmute(page) };\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":398,"ins":{"up_context":[{"change":3,"pos":6350}],"down_context":[{"change":3,"pos":711}],"flag":"BLOCK","start":11115,"end":11196,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":6350},"to":{"change":3,"start":6350,"end":6448},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" let n = hdr.n();"},{"Add":" if c.is_leaf {"},{"Add":" unsafe {"}],"del_contents":[{"Del":" unsafe {\n if c.is_leaf {\n let n = hdr.n() as usize;\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":402,"ins":{"up_context":[{"change":3,"pos":786}],"down_context":[{"change":3,"pos":7125}],"flag":"BLOCK","start":11197,"end":11979,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":3,"pos":786},"to":{"change":3,"start":6514,"end":6630},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":6514},"to":{"change":3,"start":6514,"end":6630},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | 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DELETED","from":{"change":3,"pos":6998},"to":{"change":3,"start":844,"end":940},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":1033},"to":{"change":3,"start":7081,"end":7125},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":940},"to":{"change":3,"start":7081,"end":7125},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":7081},"to":{"change":3,"start":7081,"end":7125},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" // Get the offset in the page of the key/value data."},{"Add":" let off = u16::from_le(*ptr);"},{"Add":" assert_eq!(off & 0xf000, 0);"},{"Add":" // Erase the offset by shifting the last (`n -"},{"Add":" // c.cur - 1`) offsets. The reasoning against"},{"Add":" // \"off-by-one errors\" is that if the cursor is"},{"Add":" // positioned on the first element (`c.cur == 0`),"},{"Add":" // there are `n-1` elements to shift."},{"Add":" core::ptr::copy(ptr.offset(1), ptr, n as usize - c.cur as usize - 1);"},{"Add":" // Remove the size of the actualy key/value, plus"},{"Add":" // 2 bytes (the offset)."},{"Add":" hdr.decr(2 + entry_size::(p.add(off as usize)));"}],"del_contents":[{"Del":" let kv_ptr = p.add((*ptr) as usize);\n let size = entry_size::(kv_ptr);\n"},{"Del":" core::ptr::copy(ptr.offset(1), ptr, n - c.cur as usize - 1);\n"},{"Del":" hdr.decr(size);\n } else {\n"},{"Del":" let ptr = p.add(HDR + c.cur as usize * 8) as *mut u64;\n"},{"Del":" let off = (u64::from_le(*ptr) & 0xfff) as usize;\n let kv_ptr = p.add(off);\n let size = entry_size::(kv_ptr);\n"},{"Del":" core::ptr::copy(ptr.offset(1), ptr, hdr.n() as usize - c.cur as usize - 1);\n"},{"Del":" (&mut *hdr).decr(size);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":415,"ins":{"up_context":[{"change":3,"pos":7143}],"down_context":[{"change":3,"pos":7274}],"flag":"BLOCK","start":11980,"end":12001,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":7143},"to":{"change":3,"start":7143,"end":7158},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":7158},"to":{"change":3,"start":7158,"end":7274},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" } else {"}],"del_contents":[{"Del":" };\n"},{"Del":" if l > 0 {\n assert!(!c.is_leaf);\n // Updating the left page if necessary.\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":417,"ins":{"up_context":[{"change":3,"pos":7299}],"down_context":[{"change":3,"pos":7453}],"flag":"BLOCK","start":12002,"end":13012,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":7299},"to":{"change":3,"start":7299,"end":7453},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" let ptr = p.add(HDR + c.cur as usize * 8) as *mut u64;"},{"Add":" // Offset to the key/value data."},{"Add":" let off = u64::from_le(*ptr);"},{"Add":" // Shift the offsets like in the leaf case above."},{"Add":" core::ptr::copy(ptr.offset(1), ptr, n as usize - c.cur as usize - 1);"},{"Add":" if l > 0 {"},{"Add":" // In an internal node, we may have to update"},{"Add":" // the left child of the current"},{"Add":" // position. After the move, the current"},{"Add":" // offset is at `ptr`, so we need to find the"},{"Add":" // offset one step to the left."},{"Add":" let p = ptr.offset(-1);"},{"Add":" *p = (l | (u64::from_le(*p) & 0xfff)).to_le();"},{"Add":" }"},{"Add":" // Remove the size of the key/value, plus 8 bytes"},{"Add":" // (the offset)."},{"Add":" hdr.decr(8 + entry_size::(p.add(off as usize)));"}],"del_contents":[{"Del":" let off = (p.add(HDR) as *mut u64).offset(c.cur as isize - 1);\n *off = (l | (u64::from_le(*off) & 0xfff)).to_le();\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":435,"ins":{"up_context":[{"change":3,"pos":7471}],"down_context":[{"change":3,"pos":941}],"flag":"BLOCK","start":13013,"end":13121,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":7471},"to":{"change":3,"start":7471,"end":7521},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" };"},{"Add":" hdr.set_n(n - 1);"},{"Add":" // Return the page, and 0 for \"nothing was freed\"."}],"del_contents":[{"Del":" }\n hdr.set_n(hdr.n() - 1);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":440,"ins":{"up_context":[{"change":3,"pos":7559}],"down_context":[{"change":3,"pos":999}],"flag":"BLOCK","start":13122,"end":14871,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":7559},"to":{"change":3,"start":7559,"end":7800},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":7800},"to":{"change":3,"start":1034,"end":1097},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":1097},"to":{"change":3,"start":0,"end":50},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":1097},"to":{"change":3,"start":7854,"end":8148},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":50},"to":{"change":3,"start":7854,"end":8148},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":7854},"to":{"change":3,"start":7854,"end":8148},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":8148},"to":{"change":3,"start":1098,"end":1161},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | 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cloning."},{"Add":" let s = Leaf::offset_slice(page.as_page());"},{"Add":" let (s0, s1) = s.split_at(c.cur as usize);"},{"Add":" let (_, s1) = s1.split_at(1);"},{"Add":" let mut n = 0;"},{"Add":" clone::(page.as_page(), &mut new, s0, &mut n);"},{"Add":" clone::(page.as_page(), &mut new, s1, &mut n);"},{"Add":" } else {"},{"Add":" // In an internal node, things are a bit trickier,"},{"Add":" // since we might need to update the left child."},{"Add":" //"},{"Add":" // First, clone the leftmost child of the page."},{"Add":" let hdr = header(page.as_page());"},{"Add":" let left = hdr.left_page() & !0xfff;"},{"Add":" unsafe {"},{"Add":" *(new.0.data.add(HDR) as *mut u64).offset(-1) = left.to_le();"},{"Add":" }"},{"Add":" // Then, clone the first half of the page."},{"Add":" let s = Internal::offset_slice(page.as_page());"},{"Add":" let (s0, s1) = s.split_at(c.cur as usize);"},{"Add":" let (_, s1) = s1.split_at(1);"},{"Add":" let mut n = 0;"},{"Add":" clone::(page.as_page(), &mut new, s0, &mut n);"},{"Add":" // Update the left child, which was written by the"},{"Add":" // call to `clone` as the right child of the last"},{"Add":" // entry in `s0`."},{"Add":" if l > 0 {"},{"Add":" unsafe {"}],"del_contents":[{"Del":" unsafe {\n let mut new = txn.alloc_page()?;\n as BTreeMutPage>::init(&mut new);\n if c.is_leaf {\n let s = Leaf::offset_slice::(page.as_page());\n"},{"Del":" let (s0, s1) = s.split_at(c.cur as usize);\n"},{"Del":" let (_, s1) = s1.split_at(1);\n"},{"Del":" let mut n = 0;\n clone::(page.as_page(), &mut new, s0, &mut n);\n clone::(page.as_page(), &mut new, s1, &mut n);\n } else {\n let s = Internal::offset_slice::(page.as_page());\n"},{"Del":" let (s0, s1) = s.split_at(c.cur as usize);\n"},{"Del":" let (_, s1) = s1.split_at(1);\n"},{"Del":" let mut n = 0;\n clone::(page.as_page(), &mut new, s0, &mut n);\n"},{"Del":" if l > 0 {\n"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":476,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":1157},"to":{"change":3,"start":1157,"end":1391},"introduced_by":3}],"inode":{"change":3,"pos":2014}}},"contents":[{"Del":" } else {\n let hdr = header(page.as_page());\n let left = hdr.left_page() & !0xfff;\n *(new.0.data.add(HDR) as *mut u64).offset(-1) = left.to_le();\n"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":477,"atom":{"EdgeMap":{"edges":[{"previous":"","flag":"DELETED","from":{"change":3,"pos":71},"to":{"change":3,"start":8436,"end":8519},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":1413},"to":{"change":3,"start":8436,"end":8519},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | 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page.as_page().offset))\n"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":481,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":8575}],"down_context":[{"change":3,"pos":8575}],"flag":"BLOCK","start":15012,"end":15117,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":" // Return the new page, and the offset of the freed page."},{"Add":" Ok((new, page.offset))"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":486,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":8592}],"down_context":[{"change":3,"pos":8592}],"flag":"BLOCK","start":15118,"end":15279,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":" // Decide what to do with the concatenation of two neighbouring"},{"Add":" // pages, with a middle element."},{"Add":" //"},{"Add":" // This is highly similar to the sized case."}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":494,"ins":{"up_context":[{"change":3,"pos":8743}],"down_context":[{"change":3,"pos":8771}],"flag":"BLOCK","start":15280,"end":15488,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":8743},"to":{"change":3,"start":8743,"end":8771},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" // First evaluate the size of the middle element on a"},{"Add":" // page. Contrarily to the sized case, the offsets are"},{"Add":" // aligned, so the header is always the same size (no"},{"Add":" // padding)."}],"del_contents":[{"Del":" let hdr_size = HDR;\n"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":503,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":8955}],"down_context":[{"change":3,"pos":281}],"flag":"BLOCK","start":15489,"end":15601,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":""},{"Add":" // Evaluate the size of the modified page of the concatenation"},{"Add":" // (which includes the header)."}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":507,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":331}],"down_context":[{"change":3,"pos":9003}],"flag":"BLOCK","start":15602,"end":15666,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":" // Add the \"occupied\" size (which excludes the 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m.modified.c0.is_leaf {\n"},{"Del":" merge::<_, _, _, Leaf>(txn, &mut new, m)\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":517,"ins":{"up_context":[{"change":3,"pos":449}],"down_context":[{"change":3,"pos":10212}],"flag":"BLOCK","start":15880,"end":15949,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":449},"to":{"change":3,"start":449,"end":510},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":510},"to":{"change":3,"start":9722,"end":9736},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":9722},"to":{"change":3,"start":9722,"end":9736},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":2418},"to":{"change":3,"start":10008,"end":10070},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | 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});\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":520,"ins":{"up_context":[{"change":3,"pos":10222}],"down_context":[{"change":3,"pos":10496}],"flag":"BLOCK","start":15950,"end":16577,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":10222},"to":{"change":3,"start":2419,"end":2466},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":2466},"to":{"change":3,"start":3865,"end":3942},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":3942},"to":{"change":3,"start":10363,"end":10496},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":657},"to":{"change":3,"start":10363,"end":10496},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | 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See the Sized"},{"Add":" // implementation to see cases where this happens."},{"Add":" if mod_size >= PAGE_SIZE / 2 || HDR + occupied - first_other_size < PAGE_SIZE / 2 {"}],"del_contents":[{"Del":" let rc = PageCursor::new(&m.other, 0);\n"},{"Del":" let first_size = >::current_size(m.other.as_page(), &rc);\n"},{"Del":" // If we can't rebalance, modify and return.\n if mod_size >= PAGE_SIZE / 2 || occupied - first_size < PAGE_SIZE / 2 {\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":536,"ins":{"up_context":[{"change":3,"pos":10698}],"down_context":[{"change":3,"pos":10698}],"flag":"BLOCK","start":16578,"end":16621,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":10698},"to":{"change":3,"start":557,"end":583},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" m.modified.skip_first,"}],"del_contents":[{"Del":" true,\n"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":545,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":10928}],"down_context":[{"change":3,"pos":1464}],"flag":"BLOCK","start":16622,"end":16680,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":" debug_assert!(m.modified.ins2.is_none());"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":556,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":11141}],"down_context":[{"change":3,"pos":11141}],"flag":"BLOCK","start":16681,"end":16855,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":" // Finally, if we're here, we can rebalance. There are four"},{"Add":" // (relatively explicit) cases, see the `rebalance` submodule"},{"Add":" // to see how this is done."}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":566,"ins":{"up_context":[{"change":3,"pos":11375}],"down_context":[{"change":3,"pos":11567}],"flag":"BLOCK","start":16856,"end":16909,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":11375},"to":{"change":3,"start":11375,"end":11567},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" rebalance_right::<_, _, _, Self>(txn, m)"}],"del_contents":[{"Del":" if m.modified.c0.is_leaf {\n rebalance_right::<_, _, _, Leaf>(txn, m)\n } else {\n rebalance_right::<_, _, _, Internal>(txn, m)\n 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< c.total as isize);\n"},{"Del":" if c.is_leaf {\n 0\n } else {\n"},{"Del":" let off = unsafe { *(page.data.as_ptr().add(HDR + c.cur as usize * 8) as *const u64) };\n"},{"Del":" u64::from_le(off) & !0xfff\n }\n }\n fn set_cursor<'a, T: LoadPage>(\n"},{"Del":" txn: &'a T,\n"},{"Del":" page: crate::Page,\n"},{"Del":" c: &mut PageCursor,\n"},{"Del":" k0: &K,\n v0: Option<&V>,\n ) -> Result<(&'a K, &'a V, u64), usize> {\n unsafe {\n"},{"Del":" // `lookup` has the same semantic as\n // `core::slice::binary_search`, i.e. it returns either\n // `Ok(n)`, where `n` is the position where `(k0, v0)` was\n // found, or `Err(n)` where `n` is the position where\n // `(k0, v0)` can be inserted to preserve the order.\n"},{"Del":" let lookup = lookup(txn, page, c, k0, v0);\n"},{"Del":" let result;\n c.cur = match lookup {\n Ok(n) => {\n result = if c.is_leaf {\n let off = {\n let off =\n u16::from_le(*(page.data.as_ptr().add(HDR + n * 2) as *const u16));\n (0, off)\n };\n"},{"Del":" Ok(Leaf::kv(txn, page, off))\n"},{"Del":" } else {\n let off =\n u64::from_le(*(page.data.as_ptr().add(HDR + n * 8) as *const u64));\n"},{"Del":" Ok(Internal::kv(\n txn,\n page,\n (off & !0xfff, (off & 0xfff) as u16),\n ))\n"},{"Del":" };\n"},{"Del":" n as isize\n"},{"Del":" }\n Err(n) => {\n result = Err(n);\n"},{"Del":" n as isize\n"},{"Del":" }\n };\n result\n }\n }\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":595,"ins":{"up_context":[{"change":3,"pos":16285}],"down_context":[{"change":3,"pos":16537}],"flag":"BLOCK","start":17184,"end":17539,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":16285},"to":{"change":3,"start":1337,"end":1591},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":1591},"to":{"change":3,"start":16369,"end":16379},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | 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V)`. This is computed in the same way"},{"Add":"// as a struct with fields of type `K` and `V` in C."},{"Add":"fn alloc_size(k: &K, v: &V) -> usize {"},{"Add":" let s = ((k.size() + V::ALIGN - 1) & !(V::ALIGN - 1)) + v.size();"},{"Add":" let al = K::ALIGN.max(V::ALIGN);"},{"Add":" (s + al - 1) & !(al - 1)"}],"del_contents":[{"Del":" /// Split a cursor, returning two cursors `(a, b)` where b is the\n /// same as `c`, and `a` is a cursor running from the first\n /// element of the page to `c` (excluding `c`).\n fn split_at(c: &Self::Cursor) -> (Self::Cursor, Self::Cursor) {\n"},{"Del":" (\n"},{"Del":" PageCursor {\n"},{"Del":" cur: 0,\n"},{"Del":" total: c.cur.max(0) as usize,\n"},{"Del":" is_leaf: c.is_leaf,\n },\n *c,\n )\n 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as usize,\n );\n if let Some(v0) = v0 {\n s.binary_search_by(|&off| {\n let off = u16::from_le(off);\n"},{"Del":" let (k, v) = read::(txn, page.data.as_ptr().offset(off as isize));\n let k = K::from_raw_ptr(txn, k as *const u8);\n"},{"Del":" match k.compare(txn, k0) {\n Ordering::Equal => {\n"},{"Del":" let v = V::from_raw_ptr(txn, v as *const u8);\n"},{"Del":" v.compare(txn, v0)\n"},{"Del":" }\n"},{"Del":" cmp => cmp,\n }\n })\n } else {\n s.binary_search_by(|&off| {\n let off = u16::from_le(off);\n"},{"Del":" let (k, _) = read::(txn, page.data.as_ptr().offset(off as isize));\n let k = K::from_raw_ptr(txn, k);\n"},{"Del":" k.compare(txn, k0)\n })\n }\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":612,"ins":{"up_context":[{"change":3,"pos":17853}],"down_context":[{"change":3,"pos":18858}],"flag":"BLOCK","start":17782,"end":17834,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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}\n"},{"Del":" cmp => cmp,\n }\n })\n } else {\n s.binary_search_by(|&off| {\n let off = u64::from_le(off) & 0xfff;\n"},{"Del":" let (k, _) = read::(txn, page.data.as_ptr().offset(off as isize & 0xfff));\n let k = K::from_raw_ptr(txn, k);\n"},{"Del":" k.compare(txn, k0)\n })\n }\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":616,"ins":{"up_context":[{"change":3,"pos":18867}],"down_context":[{"change":3,"pos":3472}],"flag":"BLOCK","start":17835,"end":17973,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":18867},"to":{"change":3,"start":18867,"end":18897},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":18897},"to":{"change":3,"start":280,"end":304},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | 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}\n"},{"Del":" pub(super) fn after(p: &crate::CowPage) -> Self {\n let hdr = unsafe { &*(p.data as *const Header) };\n"},{"Del":" let total = hdr.n();\n"},{"Del":" PageCursor {\n"},{"Del":" cur: total as isize,\n total: total as usize,\n is_leaf: hdr.is_leaf(),\n }\n }\n"},{"Del":" pub(super) fn last(p: crate::Page) -> Self {\n"},{"Del":" let hdr = header(p);\n let total = hdr.n();\n"},{"Del":" PageCursor {\n"},{"Del":" cur: (total - 1) as isize,\n total: total as usize,\n is_leaf: hdr.is_leaf(),\n }\n }\n"},{"Del":"}\n\n"},{"Del":"fn modify<\n"},{"Del":" T: LoadPage,\n"},{"Del":" K: UnsizedStorable + ?Sized + core::fmt::Debug,\n V: UnsizedStorable + ?Sized + core::fmt::Debug,\n"},{"Del":" L: 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I'm not convinced"},{"Add":" let mut l = P::left_child(m.page.as_page(), &m.c0);"},{"Add":" while let Some((k, v, r)) = P::next(txn, m.page.as_page(), &mut m.c0) {"},{"Add":" L::alloc_write(new, k, v, l, r, n);"}],"del_contents":[{"Del":" debug!(\"modify {:?}\", m);\n"},{"Del":" let mut l = >::left_child(m.page.as_page(), &m.c0);\n while let Some((k, v, r)) = >::next(txn, m.page.as_page(), &mut m.c0) {\n"},{"Del":" alloc::<_, _, L>(new, k, v, l, r, n);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":636,"ins":{"up_context":[{"change":3,"pos":19558}],"down_context":[{"change":3,"pos":19664}],"flag":"BLOCK","start":18444,"end":18546,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":19558},"to":{"change":3,"start":19558,"end":19664},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" L::alloc_write(new, k, v, 0, 0, n);"},{"Add":" L::alloc_write(new, k2, v2, m.l, m.r, n);"}],"del_contents":[{"Del":" alloc::<_, _, L>(new, k, v, 0, 0, n);\n alloc::<_, _, L>(new, k2, v2, m.l, m.r, n);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":639,"ins":{"up_context":[{"change":3,"pos":19681}],"down_context":[{"change":3,"pos":19735}],"flag":"BLOCK","start":18547,"end":18599,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":19681},"to":{"change":3,"start":19681,"end":19735},"introduced_by":3}],"inode":{"change":3,"pos":2014}},"ins_contents":[{"Add":" L::alloc_write(new, k, v, m.l, m.r, n);"}],"del_contents":[{"Del":" alloc::<_, _, L>(new, k, v, m.l, m.r, 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Alloc,\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":663,"ins":{"up_context":[{"change":3,"pos":2220}],"down_context":[{"change":3,"pos":20292}],"flag":"BLOCK","start":18993,"end":19474,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":3,"pos":2220},"to":{"change":3,"start":20214,"end":20227},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":20214},"to":{"change":3,"start":20214,"end":20227},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":20227},"to":{"change":3,"start":20227,"end":20250},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | 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txn: &T,\n"},{"Del":" new: &mut MutPage,\n"},{"Del":" mut m: Concat>,\n"},{"Del":") {\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":678,"ins":{"up_context":[{"change":3,"pos":20334}],"down_context":[{"change":3,"pos":20741}],"flag":"BLOCK","start":19475,"end":19854,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":20334},"to":{"change":3,"start":20334,"end":20399},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":20399},"to":{"change":3,"start":2911,"end":2962},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | 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n);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":686,"ins":{"up_context":[{"change":3,"pos":20764}],"down_context":[{"change":3,"pos":21047}],"flag":"BLOCK","start":19855,"end":20099,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":20764},"to":{"change":3,"start":2963,"end":3014},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":3014},"to":{"change":3,"start":4526,"end":4686},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":4686},"to":{"change":3,"start":20992,"end":21047},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":1474},"to":{"change":3,"start":20992,"end":21047},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | 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m.other.is_dirty() { 1 } else { 0 };"},{"Add":" Ok(Op::Merged {"},{"Add":" page: new,"},{"Add":" freed: [m.modified.page.offset | b0, m.other.offset | b1],"},{"Add":" marker: core::marker::PhantomData,"},{"Add":" })"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":711,"ins":{"up_context":[{"change":3,"pos":21384}],"down_context":[{"change":3,"pos":22275}],"flag":"BLOCK","start":20512,"end":21334,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":21384},"to":{"change":3,"start":21384,"end":21429},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":21429},"to":{"change":3,"start":0,"end":52},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":52},"to":{"change":3,"start":21467,"end":21704},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | 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let data = hdr.data() as u16;"},{"Add":" let off_new = data - size as u16;"},{"Add":" hdr.set_data(off_new);"},{"Add":" hdr.set_n(hdr.n() + 1);"},{"Add":" if hdr.is_leaf() {"},{"Add":" hdr.incr(2 + size);"},{"Add":" } else {"},{"Add":" hdr.incr(8 + size);"},{"Add":" // Set the offset to this new entry in the offset"},{"Add":" // array, along with the right child page."},{"Add":" let ptr = new.0.data.offset(HDR as isize + *n * 8) as *mut u64;"},{"Add":" *ptr = (r | off_new as u64).to_le();"}],"del_contents":[{"Del":" match s {\n Offsets::Slice(s) => {\n"},{"Del":" debug!(\"clone: {:?} {:?}\", s, s.len());\n"},{"Del":" for off in s.iter() {\n let (r, off): (u64, u16) = (*off).into();\n debug!(\"clone: {:?} {:?}\", r, off);\n unsafe {\n let ptr = page.data.as_ptr().add(off as usize);\n"},{"Del":" let size = entry_size::(ptr);\n debug!(\"size: {:?}\", size);\n let hdr = header_mut(new);\n"},{"Del":" let off_new = L::alloc(hdr, size, K::ALIGN.max(V::ALIGN));\n"},{"Del":" debug!(\"off_new: {:?}\", off_new);\n core::ptr::copy_nonoverlapping(ptr, new.0.data.offset(off_new as isize), size);\n L::set_offset(new, *n, r, off_new);\n }\n *n += 1;\n"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":732,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":22289}],"down_context":[{"change":3,"pos":22289}],"flag":"BLOCK","start":21335,"end":21427,"inode":{"change":3,"pos":2014}}},"contents":[{"Add":" core::ptr::copy_nonoverlapping(ptr, new.0.data.offset(off_new as isize), size);"}]}},{"Replacement":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":734,"ins":{"up_context":[{"change":3,"pos":22299}],"down_context":[{"change":3,"pos":22808}],"flag":"BLOCK","start":21428,"end":21445,"inode":{"change":3,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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1;"}],"del_contents":[{"Del":" }\n}\n\n"},{"Del":"fn alloc(\n"},{"Del":" new: &mut MutPage,\n k0: &K,\n v0: &V,\n l: u64,\n r: u64,\n n: &mut isize,\n) {\n let size = alloc_size(k0, v0);\n let off_new = L::alloc_insert::(new, n, size, r);\n unsafe {\n"},{"Del":" let new_ptr = new.0.data.add(off_new);\n"},{"Del":" k0.write_to_page(new_ptr);\n let ks = k0.size();\n let v_ptr = new_ptr.add((ks + V::ALIGN - 1) & !(V::ALIGN - 1));\n v0.write_to_page(v_ptr);\n"}]}},{"Edit":{"inode":{"change":3,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":736,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":22814},"to":{"change":3,"start":22814,"end":22892},"introduced_by":3}],"inode":{"change":3,"pos":2014}}},"contents":[{"Del":" if l > 0 {\n L::set_right_child(new, *n - 1, l);\n }\n *n += 1;\n"}]}},{"Replacement":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":1,"ins":{"up_context":[{"change":3,"pos":22926}],"down_context":[{"change":3,"pos":22927}],"flag":"BLOCK","start":21446,"end":21468,"inode":{"change":3,"pos":22926}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":22926},"to":{"change":3,"start":1809,"end":1836},"introduced_by":3}],"inode":{"change":3,"pos":22926}},"ins_contents":[{"Add":"use super::cursor::*;"}],"del_contents":[{"Del":"use super::header::header;\n"}]}},{"Edit":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":4,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":22942}],"down_context":[{"change":3,"pos":22942}],"flag":"BLOCK","start":21469,"end":21592,"inode":{"change":3,"pos":22926}}},"contents":[{"Add":"// The implementation here is mostly the same as in the sized case,"},{"Add":"// except for leaves, which makes it hard to refactor."}]}},{"Edit":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":16,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":23215},"to":{"change":3,"start":63,"end":98},"introduced_by":3}],"inode":{"change":3,"pos":22926}}},"contents":[{"Del":" debug!(\"rebalancing {:?}\", m);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":18,"ins":{"up_context":[{"change":3,"pos":23311}],"down_context":[{"change":3,"pos":4725}],"flag":"BLOCK","start":21593,"end":21757,"inode":{"change":3,"pos":22926}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":23311},"to":{"change":3,"start":23311,"end":23324},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":23324},"to":{"change":3,"start":3015,"end":3065},"introduced_by":3}],"inode":{"change":3,"pos":22926}},"ins_contents":[{"Add":" // page, i.e. return a middle element, and append the current"},{"Add":" // middle element to the left page."},{"Add":" let rc = super::cursor::PageCursor::new(&m.other, 0);"}],"del_contents":[{"Del":" // page.\n"},{"Del":" let rc = super::PageCursor::new(&m.other, 0);\n"}]}},{"Edit":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":23,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":4869},"to":{"change":3,"start":4869,"end":4999},"introduced_by":3}],"inode":{"change":3,"pos":22926}}},"contents":[{"Del":" // Extend the lifetimes of k and v.\n let (k, v): (&K, &V) = unsafe { (core::mem::transmute(k), core::mem::transmute(v)) };\n"}]}},{"Edit":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":26,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":23715}],"down_context":[{"change":3,"pos":1918}],"flag":"BLOCK","start":21758,"end":21968,"inode":{"change":3,"pos":22926}}},"contents":[{"Add":" // First, perform the modification on the modified page, which we"},{"Add":" // know is the left page, and return the resulting mutable page"},{"Add":" // (the modified page may or may not be mutable before we do this)."}]}},{"Replacement":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":35,"ins":{"up_context":[{"change":3,"pos":23920}],"down_context":[{"change":3,"pos":23920}],"flag":"BLOCK","start":21969,"end":22004,"inode":{"change":3,"pos":22926}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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We know the left page to be mutable by now, and"},{"Add":" // we also know there's enough space to do this."}]}},{"Replacement":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":79,"ins":{"up_context":[{"change":3,"pos":24372}],"down_context":[{"change":3,"pos":2406}],"flag":"BLOCK","start":22197,"end":22588,"inode":{"change":3,"pos":22926}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":24372},"to":{"change":3,"start":5345,"end":5496},"introduced_by":3}],"inode":{"change":3,"pos":22926}},"ins_contents":[{"Add":" // We extend the pointer's lifetime here, because we know the"},{"Add":" // current deletion (we only rebalance during deletions) won't"},{"Add":" // touch this page anymore after this."},{"Add":" let k = unsafe { core::mem::transmute(k) };"},{"Add":" let v = unsafe { core::mem::transmute(v) };"},{"Add":""},{"Add":" // If this frees the old \"other\" page, add it to the \"freed\""},{"Add":" // array."},{"Add":" let is_dirty = m.other.is_dirty();"}],"del_contents":[{"Del":" let b = {\n let hdr = &*header(m.other.as_page());\n if hdr.is_dirty() {\n 1\n } else {\n 0\n }\n };\n"}]}},{"Replacement":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":90,"ins":{"up_context":[{"change":3,"pos":2606}],"down_context":[{"change":3,"pos":24760}],"flag":"BLOCK","start":22589,"end":22650,"inode":{"change":3,"pos":22926}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":24722},"to":{"change":3,"start":2607,"end":2637},"introduced_by":3}],"inode":{"change":3,"pos":22926}},"ins_contents":[{"Add":" freed_[1] = if is_dirty { freed | 1 } else { freed }"}],"del_contents":[{"Del":" freed_[1] = freed | b\n"}]}},{"Replacement":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":95,"ins":{"up_context":[{"change":3,"pos":24851}],"down_context":[{"change":3,"pos":0}],"flag":"BLOCK","start":22651,"end":22673,"inode":{"change":3,"pos":22926}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":24851},"to":{"change":3,"start":24851,"end":24945},"introduced_by":3}],"inode":{"change":3,"pos":22926}},"ins_contents":[{"Add":" k,"},{"Add":" v,"}],"del_contents":[{"Del":" k: unsafe { core::mem::transmute(k) },\n v: unsafe { core::mem::transmute(v) },\n"}]}},{"Replacement":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":102,"ins":{"up_context":[{"change":3,"pos":24970}],"down_context":[{"change":3,"pos":25144}],"flag":"BLOCK","start":22674,"end":23148,"inode":{"change":3,"pos":22926}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":24970},"to":{"change":3,"start":24970,"end":25027},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":25027},"to":{"change":3,"start":3165,"end":3269},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":3269},"to":{"change":3,"start":25127,"end":25144},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":25127},"to":{"change":3,"start":25127,"end":25144},"introduced_by":3}],"inode":{"change":3,"pos":22926}},"ins_contents":[{"Add":"// Surprisingly, the `rebalance_right` function is simpler,"},{"Add":"// since:"},{"Add":"//"},{"Add":"// - if we call it to rebalance two internal nodes, we're in the easy"},{"Add":"// case of rebalance_left."},{"Add":"//"},{"Add":"// - Else, the middle element is the last one on the left page, and"},{"Add":"// isn't erased be leaf deletions, because these just move entries to"},{"Add":"// the left."},{"Add":"//"},{"Add":"// This implementation is shared with the sized one."},{"Add":"pub(crate) fn rebalance_right<'a, T: AllocPage, K: ?Sized, V: ?Sized, P: BTreeMutPage>("}],"del_contents":[{"Del":"pub(crate) fn rebalance_right<\n 'a,\n T: AllocPage,\n"},{"Del":" K: UnsizedStorable + ?Sized + core::fmt::Debug,\n V: UnsizedStorable + ?Sized + core::fmt::Debug,\n"},{"Del":" L: Alloc,\n>(\n"}]}},{"Replacement":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":115,"ins":{"up_context":[{"change":3,"pos":25161}],"down_context":[{"change":3,"pos":25203}],"flag":"BLOCK","start":23149,"end":23177,"inode":{"change":3,"pos":22926}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":25161},"to":{"change":3,"start":5497,"end":5534},"introduced_by":3}],"inode":{"change":3,"pos":22926}},"ins_contents":[{"Add":" m: Concat<'a, K, V, P>,"}],"del_contents":[{"Del":" m: Concat<'a, K, V, Page>,\n"}]}},{"Replacement":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":119,"ins":{"up_context":[{"change":3,"pos":25320}],"down_context":[{"change":3,"pos":25475}],"flag":"BLOCK","start":23178,"end":23290,"inode":{"change":3,"pos":22926}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":25320},"to":{"change":3,"start":5535,"end":5592},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":5592},"to":{"change":3,"start":5592,"end":5676},"introduced_by":3}],"inode":{"change":3,"pos":22926}},"ins_contents":[{"Add":" let lc = P::cursor_last(&m.other);"},{"Add":" let (k0, v0, r0) = P::current(txn, m.other.as_page(), &lc).unwrap();"}],"del_contents":[{"Del":" let lc = super::PageCursor::last(m.other.as_page());\n"},{"Del":" let (k0, v0, r0) = >::current(txn, m.other.as_page(), &lc).unwrap();\n"}]}},{"Replacement":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":123,"ins":{"up_context":[{"change":3,"pos":25516}],"down_context":[{"change":3,"pos":25655}],"flag":"BLOCK","start":23291,"end":23399,"inode":{"change":3,"pos":22926}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":25516},"to":{"change":3,"start":3117,"end":3175},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":3175},"to":{"change":3,"start":5677,"end":5748},"introduced_by":3}],"inode":{"change":3,"pos":22926}},"ins_contents":[{"Add":" let rc = P::cursor_first(&m.modified.page);"},{"Add":" let rl = P::left_child(m.modified.page.as_page(), &rc);"}],"del_contents":[{"Del":" let rc = super::PageCursor::new(&m.modified.page, 0);\n"},{"Del":" let rl = >::left_child(m.modified.page.as_page(), &rc);\n"}]}},{"Edit":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":128,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":25830}],"down_context":[{"change":3,"pos":2638}],"flag":"BLOCK","start":23400,"end":23454,"inode":{"change":3,"pos":22926}}},"contents":[{"Add":" // Perform the modification on the modified page."}]}},{"Replacement":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":131,"ins":{"up_context":[{"change":3,"pos":5800}],"down_context":[{"change":3,"pos":25958}],"flag":"BLOCK","start":23455,"end":23508,"inode":{"change":3,"pos":22926}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":3,"pos":5800},"to":{"change":3,"start":1843,"end":1907},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":2697},"to":{"change":3,"start":1843,"end":1907},"introduced_by":3}],"inode":{"change":3,"pos":22926}},"ins_contents":[{"Add":" if let Put::Ok(Ok { page, freed }) = P::put("}],"del_contents":[{"Del":" if let Put::Ok(Ok { page, freed }) = >::put(\n"}]}},{"Replacement":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":135,"ins":{"up_context":[{"change":3,"pos":26036}],"down_context":[{"change":3,"pos":26036}],"flag":"BLOCK","start":23509,"end":23544,"inode":{"change":3,"pos":22926}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":26036},"to":{"change":3,"start":1908,"end":1926},"introduced_by":3}],"inode":{"change":3,"pos":22926}},"ins_contents":[{"Add":" m.modified.skip_first,"}],"del_contents":[{"Del":" 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> 0 {\n"},{"Del":" let b = if is_dirty { 1 } else { 0 };\n"},{"Del":" freed_[0] = freed | b;\n }\n"}]}},{"Replacement":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":150,"ins":{"up_context":[{"change":3,"pos":5907}],"down_context":[{"change":3,"pos":2110}],"flag":"BLOCK","start":23612,"end":23648,"inode":{"change":3,"pos":22926}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":3,"pos":5907},"to":{"change":3,"start":2698,"end":2745},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":26272},"to":{"change":3,"start":2698,"end":2745},"introduced_by":3}],"inode":{"change":3,"pos":22926}},"ins_contents":[{"Add":" let (page, freed) = P::del("}],"del_contents":[{"Del":" let (page, freed) = >::del(\n"}]}},{"Replacement":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":158,"ins":{"up_context":[{"change":3,"pos":1533}],"down_context":[{"change":3,"pos":1706}],"flag":"BLOCK","start":23649,"end":23715,"inode":{"change":3,"pos":22926}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":1533},"to":{"change":3,"start":5908,"end":5958},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":5958},"to":{"change":3,"start":1671,"end":1706},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":1671},"to":{"change":3,"start":1671,"end":1706},"introduced_by":3}],"inode":{"change":3,"pos":22926}},"ins_contents":[{"Add":" freed_[0] = if is_dirty { freed | 1 } else { freed };"}],"del_contents":[{"Del":" let b = if is_dirty { 1 } else { 0 };\n"},{"Del":" freed_[0] = freed | 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0)?;\n"}]}},{"Replacement":{"inode":{"change":3,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":193,"ins":{"up_context":[{"change":3,"pos":3180}],"down_context":[{"change":3,"pos":26802}],"flag":"BLOCK","start":24315,"end":24376,"inode":{"change":3,"pos":22926}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":26764},"to":{"change":3,"start":3181,"end":3211},"introduced_by":3}],"inode":{"change":3,"pos":22926}},"ins_contents":[{"Add":" freed_[1] = if is_dirty { freed | 1 } else { freed }"}],"del_contents":[{"Del":" freed_[1] = freed | b\n"}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":4,"ins":{"up_context":[{"change":3,"pos":27039}],"down_context":[{"change":3,"pos":27058}],"flag":"BLOCK","start":24377,"end":24396,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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page."}]}},{"Edit":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":38,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":3495}],"down_context":[{"change":3,"pos":6407}],"flag":"BLOCK","start":24615,"end":24816,"inode":{"change":3,"pos":27023}}},"contents":[{"Add":" // Number of extra offsets."},{"Add":" let n_ins = {"},{"Add":" let n_ins = if k1v1.is_some() { 2 } else { 1 };"},{"Add":" if replace {"},{"Add":" n_ins - 1"},{"Add":" } else {"},{"Add":" n_ins"},{"Add":" }"},{"Add":" 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&& L::can_alloc(header(page.as_page()), size) {\n"},{"Del":" debug!(\"can alloc\");\n"}]}},{"Edit":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":52,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":27880}],"down_context":[{"change":3,"pos":3535}],"flag":"BLOCK","start":24976,"end":25083,"inode":{"change":3,"pos":27023}}},"contents":[{"Add":""},{"Add":" // If we replace, we first need to \"unlink\" the previous"},{"Add":" // value, by erasing its offset."}]}},{"Edit":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":58,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":6600}],"down_context":[{"change":3,"pos":3556}],"flag":"BLOCK","start":25084,"end":25183,"inode":{"change":3,"pos":27023}}},"contents":[{"Add":" // In this case, we know we're not in a leaf, so offsets"},{"Add":" // are of size 8."}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":67,"ins":{"up_context":[{"change":3,"pos":3967}],"down_context":[{"change":3,"pos":81}],"flag":"BLOCK","start":25184,"end":25352,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":49},"to":{"change":3,"start":49,"end":81},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" // Decreasing these figures here, we'll increase them"},{"Add":" // again in the calls to `alloc_write` below."},{"Add":" hdr.decr(8 + size);"}],"del_contents":[{"Del":" hdr.decr(size);\n"}]}},{"Edit":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":73,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":4040}],"down_context":[{"change":3,"pos":27880}],"flag":"BLOCK","start":25353,"end":25390,"inode":{"change":3,"pos":27023}}},"contents":[{"Add":" // Do the actual insertions."}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":75,"ins":{"up_context":[{"change":3,"pos":27919}],"down_context":[{"change":3,"pos":28045}],"flag":"BLOCK","start":25391,"end":25513,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":27919},"to":{"change":3,"start":27919,"end":28045},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" L::alloc_write(&mut page, k0, v0, 0, 0, &mut n);"},{"Add":" L::alloc_write(&mut page, k1, v1, l, r, &mut n);"}],"del_contents":[{"Del":" alloc::<_, _, L>(&mut page, k0, v0, 0, 0, &mut n);\n alloc::<_, _, L>(&mut page, k1, v1, l, r, &mut 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freed."}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":82,"ins":{"up_context":[{"change":3,"pos":28178}],"down_context":[{"change":3,"pos":28228}],"flag":"BLOCK","start":25615,"end":25858,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":28178},"to":{"change":3,"start":4041,"end":4092},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" } else if L::can_compact(hdr, size_replaced, n_ins) {"},{"Add":" // Allocate a new page, split the offsets at the position of"},{"Add":" // the insertion, and each side of the split onto the new"},{"Add":" // page, with the insertion between them."}],"del_contents":[{"Del":" } else if L::can_compact(hdr, size_replaced) {\n"}]}},{"Edit":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":87,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":28269},"to":{"change":3,"start":28269,"end":28311},"introduced_by":3}],"inode":{"change":3,"pos":27023}}},"contents":[{"Del":" debug!(\"can compact: {:?}\", new);\n"}]}},{"Edit":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":88,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":28371}],"down_context":[{"change":3,"pos":28371}],"flag":"BLOCK","start":25859,"end":25897,"inode":{"change":3,"pos":27023}}},"contents":[{"Add":""},{"Add":" // Clone the leftmost child."}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":91,"ins":{"up_context":[{"change":3,"pos":28439}],"down_context":[{"change":3,"pos":28496}],"flag":"BLOCK","start":25898,"end":25978,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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it."}]}},{"Edit":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":97,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":4155}],"down_context":[{"change":3,"pos":28543}],"flag":"BLOCK","start":26045,"end":26084,"inode":{"change":3,"pos":27023}}},"contents":[{"Add":""},{"Add":" // Finally, clone and insert."}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":102,"ins":{"up_context":[{"change":3,"pos":28669}],"down_context":[{"change":3,"pos":28793}],"flag":"BLOCK","start":26085,"end":26205,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":28669},"to":{"change":3,"start":2383,"end":2507},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" L::alloc_write(&mut new, k0, v0, 0, l, &mut n);"},{"Add":" L::alloc_write(&mut new, k1, v1, 0, r, &mut n);"}],"del_contents":[{"Del":" alloc::<_, _, L>(&mut new, k0, v0, 0, l, &mut n);\n alloc::<_, _, L>(&mut new, k1, v1, 0, r, &mut n);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":105,"ins":{"up_context":[{"change":3,"pos":28810}],"down_context":[{"change":3,"pos":28872}],"flag":"BLOCK","start":26206,"end":26266,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":28810},"to":{"change":3,"start":28810,"end":28872},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" L::alloc_write(&mut new, k0, v0, l, r, &mut n);"}],"del_contents":[{"Del":" alloc::<_, _, L>(&mut new, k0, v0, l, r, &mut n);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":109,"ins":{"up_context":[{"change":3,"pos":54}],"down_context":[{"change":3,"pos":29025}],"flag":"BLOCK","start":26267,"end":26351,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":28947},"to":{"change":3,"start":28947,"end":29025},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" // And return, freeing the old version of the page."},{"Add":" Ok(Put::Ok(Ok {"}],"del_contents":[{"Del":" let b0 = if is_dirty { 1 } else { 0 };\n return Ok(Put::Ok(Ok {\n"}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":112,"ins":{"up_context":[{"change":3,"pos":29048}],"down_context":[{"change":3,"pos":29098}],"flag":"BLOCK","start":26352,"end":26434,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":29048},"to":{"change":3,"start":29048,"end":29098},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" freed: page.offset | if page.is_dirty() { 1 } else { 0 },"},{"Add":" }))"}],"del_contents":[{"Del":" freed: page.offset | b0,\n }));\n"}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":115,"ins":{"up_context":[{"change":3,"pos":29111}],"down_context":[{"change":3,"pos":29224}],"flag":"BLOCK","start":26435,"end":26514,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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go through all the elements linearly anyway to get their sizes."}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":127,"ins":{"up_context":[{"change":3,"pos":3479}],"down_context":[{"change":3,"pos":29391}],"flag":"BLOCK","start":26726,"end":26759,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":3,"pos":3479},"to":{"change":3,"start":29377,"end":29391},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":29377},"to":{"change":3,"start":29377,"end":29391},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" L: Alloc + AllocWrite,"}],"del_contents":[{"Del":" L: Alloc,\n"}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":130,"ins":{"up_context":[{"change":3,"pos":29411}],"down_context":[{"change":3,"pos":4254}],"flag":"BLOCK","start":26760,"end":26779,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":29411},"to":{"change":3,"start":29411,"end":29434},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" page: CowPage,"}],"del_contents":[{"Del":" page: crate::Page,\n"}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":139,"ins":{"up_context":[{"change":2,"pos":1687}],"down_context":[{"change":3,"pos":29628}],"flag":"BLOCK","start":26780,"end":26818,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":2,"pos":1687},"to":{"change":3,"start":3235,"end":3264},"introduced_by":2},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":29577},"to":{"change":3,"start":3235,"end":3264},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":3264},"to":{"change":3,"start":29577,"end":29605},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":29577},"to":{"change":3,"start":29577,"end":29605},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | 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If we're inserting at position 0,"},{"Add":" // this means this leftmost child must, and will be replaced."},{"Add":" let left_child = hdr.left_page() & !0xfff;"}],"del_contents":[{"Del":" let left_child = header(page).left_page() & !0xfff;\n"}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":151,"ins":{"up_context":[{"change":3,"pos":29930}],"down_context":[{"change":3,"pos":29990}],"flag":"BLOCK","start":27000,"end":27202,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":29930},"to":{"change":3,"start":29930,"end":29990},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" // Pointer to the split key and value."},{"Add":" let mut split = None;"},{"Add":""},{"Add":" // We start filling the left page, and we will change to filling"},{"Add":" // the right page when the left one is at least half-full."}],"del_contents":[{"Del":" let mut split = (core::ptr::null(), core::ptr::null());\n"}]}},{"Edit":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":158,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":30029}],"down_context":[{"change":3,"pos":30029}],"flag":"BLOCK","start":27203,"end":27468,"inode":{"change":3,"pos":27023}}},"contents":[{"Add":" // There are two synchronised counters here: `hdr.n()` and"},{"Add":" // `n`. The reason for this is that operations on `hdr.n()` are"},{"Add":" // somewhat cumbersome, as they might involve extra operations to"},{"Add":" // convert to/from the little-endian encoding of `hdr.n()`."}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":163,"ins":{"up_context":[{"change":3,"pos":30048}],"down_context":[{"change":3,"pos":30210}],"flag":"BLOCK","start":27469,"end":27514,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":30048},"to":{"change":3,"start":30048,"end":30069},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":30069},"to":{"change":3,"start":551,"end":649},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":649},"to":{"change":3,"start":30203,"end":30210},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":30203},"to":{"change":3,"start":30203,"end":30210},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" let s = L::offset_slice(page.as_page());"}],"del_contents":[{"Del":" let s = unsafe {\n"},{"Del":" core::slice::from_raw_parts(page.data.as_ptr().add(HDR) as *const L::Offset, n0 as usize)\n"},{"Del":" };\n"}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":165,"ins":{"up_context":[{"change":3,"pos":30235}],"down_context":[{"change":3,"pos":255}],"flag":"BLOCK","start":27515,"end":27665,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":30235},"to":{"change":3,"start":30235,"end":30307},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" for (uu, off) in s.0.iter().enumerate() {"},{"Add":" // If the current position of the cursor is the insertion,"},{"Add":" // (i.e. `uu == u`), insert."}],"del_contents":[{"Del":" let mut is_left = true;\n for (uu, off) in s.iter().enumerate() {\n"}]}},{"Edit":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":169,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":276}],"down_context":[{"change":3,"pos":276}],"flag":"BLOCK","start":27666,"end":27902,"inode":{"change":3,"pos":27023}}},"contents":[{"Add":" // The following is tricky and makes assumptions on the"},{"Add":" // rest of the code. If we are inserting two elements"},{"Add":" // (i.e. if `k1v1.is_some()`), this means we're replacing"},{"Add":" // one on the page."}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":174,"ins":{"up_context":[{"change":3,"pos":319}],"down_context":[{"change":3,"pos":3290}],"flag":"BLOCK","start":27903,"end":28602,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":319},"to":{"change":3,"start":319,"end":587},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":587},"to":{"change":3,"start":587,"end":608},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":608},"to":{"change":3,"start":608,"end":743},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":743},"to":{"change":3,"start":743,"end":757},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":757},"to":{"change":3,"start":3265,"end":3290},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" // As explained in the documentation for `put` in the"},{"Add":" // definition of `BTreeMutPage`, `l0` and `r0` are the"},{"Add":" // left and right children of k1v1, since this means"},{"Add":" // the right child of a deleted entry has split, and"},{"Add":" // we must replace the deleted entry with `(k0, v0)`."},{"Add":" L::alloc_write(current_page, k0, v0, 0, l0, &mut n);"},{"Add":" total += alloc_size(k0, v0) + L::OFFSET_SIZE;"},{"Add":" L::alloc_write(current_page, k1, v1, 0, r0, &mut n);"},{"Add":" total += alloc_size(k1, v1) + L::OFFSET_SIZE;"},{"Add":""},{"Add":" // Replacing the next element:"},{"Add":" debug_assert!(replace);"}],"del_contents":[{"Del":" alloc::(current_page, k0, v0, 0, l0, &mut n);\n total += alloc_size(k0, v0) + L::extra_size();\n alloc::(current_page, k1, v1, 0, r0, &mut n);\n total += alloc_size(k1, v1) + L::extra_size();\n"},{"Del":" } else {\n"},{"Del":" alloc::(current_page, k0, v0, l0, r0, &mut n);\n total += alloc_size(k0, v0) + L::extra_size();\n"},{"Del":" }\n"},{"Del":" if replace {\n"}]}},{"Edit":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":187,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":3316}],"down_context":[{"change":3,"pos":3316}],"flag":"BLOCK","start":28603,"end":28833,"inode":{"change":3,"pos":27023}}},"contents":[{"Add":" } else {"},{"Add":" L::alloc_write(current_page, k0, v0, l0, r0, &mut n);"},{"Add":" total += alloc_size(k0, v0) + L::OFFSET_SIZE;"},{"Add":" if replace {"},{"Add":" continue;"},{"Add":" }"}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":195,"ins":{"up_context":[{"change":3,"pos":4327}],"down_context":[{"change":3,"pos":832}],"flag":"BLOCK","start":28834,"end":29116,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":3,"pos":4327},"to":{"change":3,"start":30307,"end":30357},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":768},"to":{"change":3,"start":30307,"end":30357},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":30307},"to":{"change":3,"start":30307,"end":30357},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" // Then, i.e. either if we're not at the position of an"},{"Add":" // insertion, or else if we're not replacing the current"},{"Add":" // position, just copy the current entry to the appropriate"},{"Add":" // page (left or right)."},{"Add":" let (r, off): (u64, usize) = (*off).into();"}],"del_contents":[{"Del":" let (r, off): (u64, u16) = (*off).into();\n"}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":202,"ins":{"up_context":[{"change":3,"pos":30374}],"down_context":[{"change":3,"pos":0}],"flag":"BLOCK","start":29117,"end":29159,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":30374},"to":{"change":3,"start":30374,"end":30434},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" let ptr = page.data.add(off);"}],"del_contents":[{"Del":" let ptr = page.data.as_ptr().add(off as usize);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":204,"ins":{"up_context":[{"change":3,"pos":48}],"down_context":[{"change":3,"pos":30670}],"flag":"BLOCK","start":29160,"end":30010,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":3,"pos":93},"to":{"change":3,"start":30535,"end":30619},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":30535},"to":{"change":3,"start":30535,"end":30619},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":30619},"to":{"change":3,"start":30619,"end":30670},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":""},{"Add":" // If the left side of the split is at least half-full, we"},{"Add":" // know that we can do all the insertions we need on the"},{"Add":" // right-hand side (even if there are two of them, and the"},{"Add":" // replaced value is of size 0), so we switch."},{"Add":" if split.is_none() && total >= PAGE_SIZE / 2 {"},{"Add":" // Don't write the next entry onto any page, keep it"},{"Add":" // as the split entry."},{"Add":" let (k, v) = read::(txn, ptr);"},{"Add":" split = Some((K::from_raw_ptr(txn, k), V::from_raw_ptr(txn, v)));"},{"Add":" // Set the entry count for the current page, before"},{"Add":" // switching and resetting the counter."},{"Add":" header_mut(current_page).set_n(n as u16);"},{"Add":""},{"Add":" // And set the leftmost child of the right page to"},{"Add":" // `r`."}],"del_contents":[{"Del":" if is_left && total >= PAGE_SIZE / 2 {\n is_left = false;\n"},{"Del":" split = read::(txn, ptr);\n"}]}},{"Edit":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":221,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":30725}],"down_context":[{"change":3,"pos":30725}],"flag":"BLOCK","start":30011,"end":30072,"inode":{"change":3,"pos":27023}}},"contents":[{"Add":""},{"Add":" // Then, switch page and reset the counter."}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":226,"ins":{"up_context":[{"change":3,"pos":30812}],"down_context":[{"change":3,"pos":30916}],"flag":"BLOCK","start":30073,"end":30873,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":30812},"to":{"change":3,"start":2588,"end":2684},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" // Else, we're simply allocating a new entry on the"},{"Add":" // current page."},{"Add":" let off_new = {"},{"Add":" let hdr = header_mut(current_page);"},{"Add":" let data = hdr.data();"},{"Add":" assert!("},{"Add":" HDR + hdr.n() as usize * L::OFFSET_SIZE + L::OFFSET_SIZE + size"},{"Add":" < data as usize"},{"Add":" );"},{"Add":" // Move the data pointer `size` bytes to the left."},{"Add":" hdr.set_data(data - size as u16);"},{"Add":" // And increase the number of entries, and"},{"Add":" // occupied size of the page."},{"Add":" hdr.incr(size + L::OFFSET_SIZE);"},{"Add":" data - size as u16"},{"Add":" };"},{"Add":" // Copy the entry."}],"del_contents":[{"Del":" let off_new = L::alloc(header_mut(current_page), size, K::ALIGN.max(V::ALIGN));\n"}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":248,"ins":{"up_context":[{"change":3,"pos":31100}],"down_context":[{"change":3,"pos":31160}],"flag":"BLOCK","start":30874,"end":30983,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":31100},"to":{"change":3,"start":31100,"end":31160},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" // And set the offset."},{"Add":" L::set_offset(current_page, n, r | (off_new as u64));"}],"del_contents":[{"Del":" L::set_offset(current_page, n, r, off_new);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":252,"ins":{"up_context":[{"change":3,"pos":31198}],"down_context":[{"change":3,"pos":31198}],"flag":"BLOCK","start":30984,"end":31028,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":31198},"to":{"change":3,"start":1781,"end":1826},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" total += size + L::OFFSET_SIZE;"}],"del_contents":[{"Del":" total += size + L::extra_size();\n"}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":255,"ins":{"up_context":[{"change":3,"pos":867}],"down_context":[{"change":3,"pos":889}],"flag":"BLOCK","start":31029,"end":31288,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":867},"to":{"change":3,"start":867,"end":889},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" header_mut(current_page).set_n(n as u16);"},{"Add":""},{"Add":" // Finally, it is possible that we haven't had a chance to do the"},{"Add":" // insertions yet: this is the case iff we're inserting at the end"},{"Add":" // of all the entries, so handle this now."},{"Add":" if u == s.0.len() {"}],"del_contents":[{"Del":" if u == s.len() {\n"}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":262,"ins":{"up_context":[{"change":3,"pos":928}],"down_context":[{"change":3,"pos":1062}],"flag":"BLOCK","start":31289,"end":31419,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":928},"to":{"change":3,"start":928,"end":1062},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" L::alloc_write(current_page, k0, v0, 0, l0, &mut n);"},{"Add":" L::alloc_write(current_page, k1, v1, 0, r0, &mut n);"}],"del_contents":[{"Del":" alloc::(current_page, k0, v0, 0, l0, &mut n);\n alloc::(current_page, k1, v1, 0, r0, &mut n);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":265,"ins":{"up_context":[{"change":3,"pos":1079}],"down_context":[{"change":3,"pos":31734}],"flag":"BLOCK","start":31420,"end":31486,"inode":{"change":3,"pos":27023}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":1079},"to":{"change":3,"start":1079,"end":1147},"introduced_by":3}],"inode":{"change":3,"pos":27023}},"ins_contents":[{"Add":" L::alloc_write(current_page, k0, v0, l0, r0, &mut n);"}],"del_contents":[{"Del":" alloc::(current_page, k0, v0, l0, r0, &mut n);\n"}]}},{"Edit":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":268,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":31750}],"down_context":[{"change":3,"pos":31783}],"flag":"BLOCK","start":31487,"end":31538,"inode":{"change":3,"pos":27023}}},"contents":[{"Add":" let (split_key, split_value) = 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if mid < s.len() => {\n debug!(\"split_at: {:?} {:?}\", s.len(), mid);\n let (a, b) = s.split_at(mid);\n (Offsets::Slice(a), Offsets::Slice(b))\n }\n Offsets::Slice(s) => {\n debug_assert_eq!(mid, s.len());\n (Offsets::Slice(s), Offsets::Slice(&[][..]))\n }\n"}]}},{"Replacement":{"inode":{"change":3,"pos":33822},"path":"sanakirja-core/src/btree/page_unsized/alloc.rs","line":68,"ins":{"up_context":[{"change":3,"pos":35860}],"down_context":[{"change":3,"pos":3895}],"flag":"BLOCK","start":33722,"end":33826,"inode":{"change":3,"pos":33822}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":35860},"to":{"change":3,"start":3150,"end":3181},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":3181},"to":{"change":3,"start":35945,"end":35961},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | 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2 + size < data as usize);\n"},{"Del":" hdr.set_data(data - size as u16);\n"},{"Del":" hdr.set_n(hdr.n() + 1);\n"},{"Del":" hdr.incr(size);\n data - size as u16\n"},{"Del":" }\n"},{"Del":" fn alloc_insert(\n"},{"Del":" new: &mut MutPage,\n n: &mut isize,\n size: usize,\n _: u64,\n ) -> usize {\n let (hdr_n, off_new) = {\n let hdr = header_mut(new);\n (\n hdr.n(),\n"},{"Del":" Self::alloc(&mut *hdr, size, K::ALIGN.max(V::ALIGN)),\n"},{"Del":" )\n };\n // Making space for the new offset\n"},{"Del":" unsafe {\n"},{"Del":" core::ptr::copy(\n new.0.data.add(HDR + (*n as usize) * 2),\n new.0.data.add(HDR + (*n as usize) * 2 + 2),\n (hdr_n as usize - (*n as usize)) * 2,\n );\n }\n Self::set_offset(new, *n, 0, off_new);\n off_new as usize\n }\n fn set_offset(new: &mut MutPage, n: isize, _: u64, off: u16) {\n unsafe {\n"}]}},{"Replacement":{"inode":{"change":3,"pos":33822},"path":"sanakirja-core/src/btree/page_unsized/alloc.rs","line":87,"ins":{"up_context":[{"change":3,"pos":38739}],"down_context":[{"change":3,"pos":38771}],"flag":"BLOCK","start":34198,"end":34239,"inode":{"change":3,"pos":33822}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":38739},"to":{"change":3,"start":38739,"end":38771},"introduced_by":3}],"inode":{"change":3,"pos":33822}},"ins_contents":[{"Add":" *ptr = (off as u16).to_le();"}],"del_contents":[{"Del":" *ptr = off.to_le();\n"}]}},{"Replacement":{"inode":{"change":3,"pos":33822},"path":"sanakirja-core/src/btree/page_unsized/alloc.rs","line":90,"ins":{"up_context":[{"change":3,"pos":38787}],"down_context":[{"change":3,"pos":38848}],"flag":"BLOCK","start":34240,"end":34241,"inode":{"change":3,"pos":33822}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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UnsizedStorable + ?Sized, V: UnsizedStorable + ?Sized>(\n"},{"Del":" txn: &T,\n"},{"Del":" page: crate::Page,\n (_, off): (u64, u16),\n ) -> (&'a K, &'a V, u64) {\n unsafe {\n"},{"Del":" let (k, v) = read::(txn, page.data.as_ptr().add(off as usize));\n (K::from_raw_ptr(txn, k), V::from_raw_ptr(txn, v), 0)\n"},{"Del":" }\n }\n"}]}},{"Replacement":{"inode":{"change":3,"pos":33822},"path":"sanakirja-core/src/btree/page_unsized/alloc.rs","line":105,"ins":{"up_context":[{"change":3,"pos":39652}],"down_context":[{"change":3,"pos":4310}],"flag":"BLOCK","start":34442,"end":34476,"inode":{"change":3,"pos":33822}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":39652},"to":{"change":3,"start":4174,"end":4205},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":4205},"to":{"change":3,"start":39737,"end":39747},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | 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usize\n"},{"Del":" }\n"},{"Del":" fn can_compact(hdr: &Header, size: isize) -> bool {\n"},{"Del":" debug!(\n \"can_compact, internal: {:?} {:?} {:?}\",\n HDR,\n hdr.left_page() & 0xfff,\n size\n );\n"},{"Del":" (HDR as isize) + (hdr.n() as isize) * 8 + ((hdr.left_page() & 0xfff) as isize) + 8 + size\n <= PAGE_SIZE as isize\n"},{"Del":" }\n"},{"Del":"\n"},{"Del":" fn truncate_left(\n"},{"Del":" _txn: &T,\n"},{"Del":" page: &mut MutPage,\n n: usize,\n ) -> Option<(*const K, *const V)> {\n // The following line copies the left child of the last entry\n // (hence the `- 8` and `- 1`)\n let hdr_n = header_mut(page).n();\n"}]}},{"Replacement":{"inode":{"change":3,"pos":33822},"path":"sanakirja-core/src/btree/page_unsized/alloc.rs","line":122,"ins":{"up_context":[{"change":3,"pos":40560}],"down_context":[{"change":3,"pos":40744}],"flag":"BLOCK","start":34634,"end":34849,"inode":{"change":3,"pos":33822}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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0);\n let data = hdr.data();\n"},{"Del":" assert!(HDR + hdr.n() as usize * 8 + 8 + size <= data as usize);\n"},{"Del":" hdr.set_data(data - size as u16);\n"},{"Del":" hdr.set_n(hdr.n() + 1);\n"},{"Del":" hdr.incr(size);\n data - size as u16\n"},{"Del":" }\n"},{"Del":" fn alloc_insert(\n"},{"Del":" new: &mut MutPage,\n n: &mut isize,\n size: usize,\n r: u64,\n ) -> usize {\n let (hdr_n, off_new) = {\n let hdr = header_mut(new);\n (\n hdr.n(),\n"},{"Del":" Self::alloc(&mut *hdr, size, K::ALIGN.max(V::ALIGN)),\n"},{"Del":" )\n };\n"},{"Del":" unsafe {\n"},{"Del":" core::ptr::copy(\n new.0.data.add(HDR + (*n as usize) * 8),\n new.0.data.add(HDR + (*n as usize) * 8 + 8),\n (hdr_n as usize - (*n as usize)) * 8,\n );\n"},{"Del":" }\n"},{"Del":" Self::set_offset(new, *n, r, off_new);\n off_new as 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{\n"}]}},{"Replacement":{"inode":{"change":3,"pos":33822},"path":"sanakirja-core/src/btree/page_unsized/alloc.rs","line":132,"ins":{"up_context":[{"change":3,"pos":42620}],"down_context":[{"change":3,"pos":42665}],"flag":"BLOCK","start":34911,"end":34943,"inode":{"change":3,"pos":33822}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":42620},"to":{"change":3,"start":42620,"end":42665},"introduced_by":3}],"inode":{"change":3,"pos":33822}},"ins_contents":[{"Add":" *ptr = off.to_le();"}],"del_contents":[{"Del":" *ptr = (r | off as u64).to_le();\n"}]}},{"Replacement":{"inode":{"change":3,"pos":33822},"path":"sanakirja-core/src/btree/page_unsized/alloc.rs","line":135,"ins":{"up_context":[{"change":3,"pos":42681}],"down_context":[{"change":3,"pos":42948}],"flag":"BLOCK","start":34944,"end":34945,"inode":{"change":3,"pos":33822}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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r)\n"}]}},{"Edit":{"inode":{"change":3,"pos":33822},"path":"sanakirja-core/src/btree/page_unsized/alloc.rs","line":148,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":43733}],"down_context":[{"change":3,"pos":43733}],"flag":"BLOCK","start":35146,"end":35147,"inode":{"change":3,"pos":33822}}},"contents":[{"Add":""}]}},{"Replacement":{"inode":{"change":3,"pos":33822},"path":"sanakirja-core/src/btree/page_unsized/alloc.rs","line":153,"ins":{"up_context":[{"change":3,"pos":43803}],"down_context":[{"change":3,"pos":43896}],"flag":"BLOCK","start":35148,"end":35254,"inode":{"change":3,"pos":33822}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":43803},"to":{"change":3,"start":43803,"end":43896},"introduced_by":3}],"inode":{"change":3,"pos":33822}},"ins_contents":[{"Add":"impl Into<(u64, usize)> for LeafOffset {"},{"Add":" fn into(self) -> (u64, usize) {"},{"Add":" (0, self.0 as usize)"}],"del_contents":[{"Del":"impl Into<(u64, u16)> for LeafOffset 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isize,"},{"Add":") {"},{"Add":" let size = alloc_size(k0, v0);"},{"Add":" let off_new = alloc_insert::(new, n, size, r);"},{"Add":" unsafe {"},{"Add":" let new_ptr = new.0.data.add(off_new);"},{"Add":" k0.write_to_page(new_ptr);"},{"Add":" let ks = k0.size();"},{"Add":" let v_ptr = new_ptr.add((ks + V::ALIGN - 1) & !(V::ALIGN - 1));"},{"Add":" v0.write_to_page(v_ptr);"},{"Add":" }"},{"Add":" if l > 0 {"},{"Add":" L::set_right_child(new, *n - 1, l);"},{"Add":" }"},{"Add":" *n += 1;"},{"Add":"}"},{"Add":""},{"Add":"/// Reserve space on the page for `size` bytes of data (i.e. not"},{"Add":"/// counting the offset), set the right child of the new position"},{"Add":"/// to `r`, add the offset to the new data to the offset array,"},{"Add":"/// and return the new offset."},{"Add":"fn alloc_insert("},{"Add":" new: &mut MutPage,"},{"Add":" n: &mut isize,"},{"Add":" size: usize,"},{"Add":" r: u64,"},{"Add":") -> usize {"},{"Add":" let hdr = header_mut(new);"},{"Add":" let data = hdr.data();"},{"Add":" // If we're here, the following assertion has been checked by the"},{"Add":" // `can_alloc` method."},{"Add":" debug_assert!(HDR + (hdr.n() as usize + 1) * L::OFFSET_SIZE + size <= data as usize);"},{"Add":" hdr.set_data(data - size as u16);"},{"Add":" hdr.set_n(hdr.n() + 1);"},{"Add":" hdr.incr(L::OFFSET_SIZE + size);"},{"Add":" let off_new = data - size as u16;"},{"Add":" let hdr_n = hdr.n();"},{"Add":""},{"Add":" // Making space for the new offset"},{"Add":" unsafe {"},{"Add":" core::ptr::copy("},{"Add":" new.0.data.add(HDR + (*n as usize) * L::OFFSET_SIZE),"},{"Add":" new.0"},{"Add":" .data"},{"Add":" .add(HDR + (*n as usize) * L::OFFSET_SIZE + L::OFFSET_SIZE),"},{"Add":" (hdr_n as usize - (*n as usize)) * L::OFFSET_SIZE,"},{"Add":" );"}]}},{"Edit":{"inode":{"change":3,"pos":33822},"path":"sanakirja-core/src/btree/page_unsized/alloc.rs","line":248,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":44309}],"down_context":[{"change":3,"pos":44309}],"flag":"BLOCK","start":37680,"end":37751,"inode":{"change":3,"pos":33822}}},"contents":[{"Add":" L::set_offset(new, *n, r | (off_new as u64));"},{"Add":" off_new as usize"}]}},{"Replacement":{"inode":{"change":3,"pos":8623},"path":"sanakirja-core/src/btree/page.rs","line":3,"ins":{"up_context":[{"change":2,"pos":2023}],"down_context":[{"change":2,"pos":2052}],"flag":"BLOCK","start":37752,"end":37783,"inode":{"change":3,"pos":8623}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":2,"pos":2023},"to":{"change":2,"start":2023,"end":2052},"introduced_by":2}],"inode":{"change":3,"pos":8623}},"ins_contents":[{"Add":"//! [`core::mem::size_of()`])."}],"del_contents":[{"Del":"//! `core::mem::size_of()`).\n"}]}},{"Replacement":{"inode":{"change":3,"pos":8623},"path":"sanakirja-core/src/btree/page.rs","line":53,"ins":{"up_context":[{"change":2,"pos":3957}],"down_context":[{"change":2,"pos":4094}],"flag":"BLOCK","start":37784,"end":37925,"inode":{"change":3,"pos":8623}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":2,"pos":3957},"to":{"change":2,"start":3957,"end":4094},"introduced_by":2}],"inode":{"change":3,"pos":8623}},"ins_contents":[{"Add":"//! length `n` of Little-Endian-encoded [`u64`], where the 12 least"},{"Add":"//! significant bits of each [`u64`] are an offset to a `Tuple` in"}],"del_contents":[{"Del":"//! length `n` of Little-Endian-encoded `u64`, where the 12 least\n//! significant bits of each `u64` are an offset to a `Tuple` in\n"}]}},{"Replacement":{"inode":{"change":3,"pos":8623},"path":"sanakirja-core/src/btree/page.rs","line":79,"ins":{"up_context":[{"change":2,"pos":4901}],"down_context":[{"change":3,"pos":20}],"flag":"BLOCK","start":37926,"end":37981,"inode":{"change":3,"pos":8623}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":2,"pos":4901},"to":{"change":2,"start":4901,"end":4948},"introduced_by":2}],"inode":{"change":3,"pos":8623}},"ins_contents":[{"Add":"use super::page_unsized::{cursor::PageCursor, header};"}],"del_contents":[{"Del":"use super::page_unsized::{header, PageCursor};\n"}]}},{"Replacement":{"inode":{"change":3,"pos":8623},"path":"sanakirja-core/src/btree/page.rs","line":98,"ins":{"up_context":[{"change":3,"pos":8700}],"down_context":[{"change":3,"pos":2145}],"flag":"BLOCK","start":37982,"end":38082,"inode":{"change":3,"pos":8623}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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core::mem::size_of::>()\n } else {\n 8 + core::mem::size_of::>()\n"},{"Del":" }\n"}]}},{"Replacement":{"inode":{"change":3,"pos":8623},"path":"sanakirja-core/src/btree/page.rs","line":256,"ins":{"up_context":[{"change":2,"pos":9106}],"down_context":[{"change":3,"pos":5804}],"flag":"BLOCK","start":38083,"end":38132,"inode":{"change":3,"pos":8623}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":2,"pos":9106},"to":{"change":3,"start":5690,"end":5745},"introduced_by":2},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":5690},"to":{"change":3,"start":5690,"end":5745},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":5745},"to":{"change":2,"start":9107,"end":9134},"introduced_by":2}],"inode":{"change":3,"pos":8623}},"ins_contents":[{"Add":" match lookup(txn, page, c, k0, v0) {"}],"del_contents":[{"Del":" let lookup = lookup(txn, page, c, k0, v0);\n"},{"Del":" match lookup 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alloc::<_, _, L>(new, k2, v2, m.l, m.r, n);\n"},{"Del":" } else {\n"},{"Del":" alloc::<_, _, L>(new, k, v, m.l, m.r, n);\n"},{"Del":" }\n"},{"Del":" } else {\n"},{"Del":" // If there's no insertion, we have had no opportunity to set\n // the updated left chlid, so set it here.\n"},{"Del":" l = m.l\n }\n"},{"Del":" // Then, clone `m.c1`, possibly skipping the first element.\n let mut c1 = m.c1.clone();\n if m.skip_first {\n >::move_next(&mut c1);\n }\n while let Some((k, v, r)) = >::next(txn, m.page.as_page(), &mut c1) {\n"},{"Del":" alloc::<_, _, L>(new, k, v, l, r, n);\n"},{"Del":" l = 0;\n }\n"},{"Del":"}\n\n"},{"Del":"/// The very unsurprising `merge` function\nfn merge<\n T: AllocPage + LoadPage,\n K: Storable + core::fmt::Debug,\n V: Storable + core::fmt::Debug,\n L: Alloc,\n>(\n txn: &mut T,\n"},{"Del":" mut m: Concat>,\n"},{"Del":") -> Result<(MutPage, [u64; 2]), T::Error> {\n // This algorithm is probably a bit naive, especially for leaves,\n // where if the left page is mutable, we can copy the other page\n // onto it.\n\n // Indeed, we first allocate a page, then clone both pages onto\n // it, in a different order depending on whether the modified page\n // is the left or the right child.\n let mut new = txn.alloc_page()?;\n as BTreeMutPage>::init(&mut new);\n"},{"Del":" let mut n = 0;\n if m.mod_is_left {\n"},{"Del":" modify::<_, _, _, L>(txn, &mut new, &mut m.modified, &mut n);\n"},{"Del":" let mut rc = PageCursor::new(&m.other, 0);\n"},{"Del":" let l = >::left_child(m.other.as_page(), &rc);\n"},{"Del":" alloc::<_, _, L>(&mut new, m.mid.0, m.mid.1, 0, l, &mut n);\n"},{"Del":" while let Some((k, v, r)) = >::next(txn, m.other.as_page(), &mut rc) {\n"},{"Del":" alloc::<_, _, L>(&mut new, k, v, 0, r, &mut n);\n"},{"Del":" }\n } else {\n"},{"Del":" let mut rc = PageCursor::new(&m.other, 0);\n"},{"Del":" let mut l = >::left_child(m.other.as_page(), &rc);\n while let Some((k, v, r)) = >::next(txn, m.other.as_page(), &mut rc) {\n"},{"Del":" alloc::<_, _, L>(&mut new, k, v, l, r, &mut n);\n"},{"Del":" l = 0;\n }\n"},{"Del":" alloc::<_, _, L>(&mut new, m.mid.0, m.mid.1, 0, 0, &mut n);\n modify::<_, _, _, L>(txn, &mut new, &mut m.modified, &mut n);\n"},{"Del":" }\n"},{"Del":" let freed = {\n let b0 = if m.modified.page.is_dirty() { 1 } else { 0 };\n let b1 = if m.other.is_dirty() { 1 } else { 0 };\n [m.modified.page.offset | b0, m.other.offset | b1]\n };\n Ok((new, freed))\n"},{"Del":"}\n\n"}]}},{"Edit":{"inode":{"change":3,"pos":8623},"path":"sanakirja-core/src/btree/page.rs","line":730,"atom":{"NewVertex":{"up_context":[{"change":2,"pos":21552}],"down_context":[{"change":3,"pos":38877}],"flag":"BLOCK","start":38785,"end":38845,"inode":{"change":3,"pos":8623}}},"contents":[{"Add":" let size = 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allocate an entry in the page, copy it, and set\n/// its right and left children.\n"},{"Del":"fn alloc(\n"},{"Del":" new: &mut MutPage,\n"},{"Del":" k0: &K,\n v0: &V,\n l: u64,\n r: u64,\n n: &mut isize,\n) {\n"},{"Del":" let off_new = L::alloc_insert::(new, n, r);\n"},{"Del":" unsafe {\n"},{"Del":" let new_ptr = &mut *(new.0.data.add(off_new as usize) as *mut Tuple);\n core::ptr::copy_nonoverlapping(k0, &mut new_ptr.k, 1);\n core::ptr::copy_nonoverlapping(v0, &mut new_ptr.v, 1);\n"},{"Del":" }\n"},{"Del":" if l > 0 {\n L::set_right_child(new, *n - 1, l);\n }\n *n += 1;\n"},{"Del":"}\n"}]}},{"Edit":{"inode":{"change":3,"pos":387},"path":"sanakirja-core/src/btree/page/rebalance.rs","line":78,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":2798},"to":{"change":3,"start":9473,"end":9520},"introduced_by":3}],"inode":{"change":3,"pos":387}}},"contents":[{"Del":" let right_hdr = 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AllocPage,\n"},{"Del":" K: Storable + core::fmt::Debug,\n V: Storable + core::fmt::Debug,\n"},{"Del":" L: Alloc,\n>(\n txn: &mut T,\n"},{"Del":" m: Concat<'a, K, V, Page>,\n"},{"Del":") -> Result, T::Error> {\n assert!(!m.mod_is_left);\n // Take the last element of the left page.\n"},{"Del":" let lc = PageCursor::last(m.other.as_page());\n let (k0, v0, r0) = >::current(txn, m.other.as_page(), &lc).unwrap();\n"},{"Del":"\n // First element of the right page.\n"},{"Del":" let rc = super::PageCursor::new(&m.modified.page, 0);\n"},{"Del":" let rl = >::left_child(m.modified.page.as_page(), &rc);\n"},{"Del":"\n"},{"Del":" let mut freed_ = [0, 0];\n"},{"Del":"\n"},{"Del":" // Perform the modification on the modified page.\n"},{"Del":" let new_right = if let Some((k, v)) = m.modified.ins {\n"},{"Del":" let is_dirty = m.modified.page.is_dirty();\n"},{"Del":" if let Put::Ok(Ok { page, freed }) = >::put(\n"},{"Del":" txn,\n m.modified.page,\n m.modified.mutable,\n"},{"Del":" m.modified.skip_first,\n"},{"Del":" &m.modified.c1,\n k,\n v,\n m.modified.ins2,\n m.modified.l,\n m.modified.r,\n )? {\n"},{"Del":" let b = if is_dirty { 1 } else { 0 };\n"},{"Del":" freed_[0] = freed | b;\n"},{"Del":" page\n } else {\n unreachable!()\n }\n } else {\n"},{"Del":" let is_dirty = m.modified.page.is_dirty();\n"},{"Del":" let (page, freed) = >::del(\n"},{"Del":" txn,\n m.modified.page,\n m.modified.mutable,\n &m.modified.c1,\n m.modified.l,\n"},{"Del":" )?;\n"},{"Del":" if freed > 0 {\n"},{"Del":" let b = if is_dirty { 1 } else { 0 };\n"},{"Del":" freed_[0] = freed | b;\n }\n"},{"Del":" page\n };\n"},{"Del":"\n // Add the middle element of the concatenation as the first\n // element of the right page. We know the right page is mutable,\n // since we just modified it (hence the `assert_eq!(freed, 0)`.\n"},{"Del":" let new_right = if let Put::Ok(Ok { freed, page }) = >::put(\n"},{"Del":" txn,\n new_right.0,\n true,\n false,\n &rc,\n m.mid.0,\n m.mid.1,\n None,\n r0,\n rl,\n )? {\n"},{"Del":" assert_eq!(freed, 0);\n"},{"Del":" page\n"},{"Del":" } else {\n unreachable!()\n };\n\n"},{"Del":" // As explained in the general comment on this function, this\n // entry isn't erased by the deletion in `m.other` below, so we\n // can safely extend its lifetime.\n"},{"Del":" let k = unsafe { core::mem::transmute(k0) };\n let v = unsafe { core::mem::transmute(v0) };\n\n let is_dirty = m.other.is_dirty();\n"},{"Del":" let (new_left, freed) = >::del(txn, m.other, m.other_is_mutable, &lc, 0)?;\n if freed > 0 {\n"},{"Del":" freed_[1] = freed | if is_dirty { 1 } else { 0 }\n"},{"Del":" }\n Ok(Op::Rebalanced {\n l: new_left.0.offset,\n r: new_right.0.offset,\n"},{"Del":" k,\n v,\n"},{"Del":" incr_kv_rc: 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L::alloc_write(&mut page, k0, v0, l, r, &mut n);"},{"Add":" // No page was freed, return the page."}],"del_contents":[{"Del":" if let Some((k1, v1)) = k1v1 {\n"},{"Del":" alloc::<_, _, L>(&mut page, k0, v0, 0, 0, &mut n);\n alloc::<_, _, L>(&mut page, k1, v1, l, r, &mut n);\n"},{"Del":" } else {\n"},{"Del":" debug!(\"lrn = {:?} {:?} {:?}\", l, r, n);\n"},{"Del":" alloc::<_, _, L>(&mut page, k0, v0, l, r, &mut n);\n"},{"Del":" }\n"}]}},{"Replacement":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":46,"ins":{"up_context":[{"change":3,"pos":7103}],"down_context":[{"change":3,"pos":7156}],"flag":"BLOCK","start":39971,"end":40080,"inode":{"change":3,"pos":5929}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":7103},"to":{"change":3,"start":6225,"end":6275},"introduced_by":3}],"inode":{"change":3,"pos":5929}},"ins_contents":[{"Add":" } else if L::can_compact::(hdr) {"},{"Add":" // Here, we could allocate if we cloned, so let's clone:"}],"del_contents":[{"Del":" } else if L::can_compact::(hdr, size) {\n"}]}},{"Edit":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":51,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":7370}],"down_context":[{"change":3,"pos":10783}],"flag":"BLOCK","start":40081,"end":40147,"inode":{"change":3,"pos":5929}}},"contents":[{"Add":""},{"Add":" // Take the offsets and split it at the cursor position."}]}},{"Edit":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":55,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":7477}],"down_context":[{"change":3,"pos":9721}],"flag":"BLOCK","start":40148,"end":40216,"inode":{"change":3,"pos":5929}}},"contents":[{"Add":""},{"Add":" // If we're replacing, remove the offset that needs to go."}]}},{"Edit":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":58,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":9783}],"down_context":[{"change":3,"pos":7477}],"flag":"BLOCK","start":40217,"end":40337,"inode":{"change":3,"pos":5929}}},"contents":[{"Add":""},{"Add":" // And then clone the page, inserting the new elements between"},{"Add":" // the two halves of the split offsets."}]}},{"Replacement":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":63,"ins":{"up_context":[{"change":3,"pos":10908}],"down_context":[{"change":3,"pos":10977}],"flag":"BLOCK","start":40338,"end":40394,"inode":{"change":3,"pos":5929}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":3,"pos":10908},"to":{"change":3,"start":9784,"end":9834},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":5526},"to":{"change":3,"start":9784,"end":9834},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | 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{\n"},{"Del":" alloc::<_, _, L>(&mut new, k0, v0, l, r, &mut n);\n"},{"Del":" }\n"},{"Del":" debug!(\"alloc: {:?}\", new);\n"},{"Del":" debug!(\"alloc: {:?}\", header(new.0.as_page()).left_page());\n"}]}},{"Replacement":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":74,"ins":{"up_context":[{"change":3,"pos":8060}],"down_context":[{"change":3,"pos":8372}],"flag":"BLOCK","start":40395,"end":40493,"inode":{"change":3,"pos":5929}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":8060},"to":{"change":3,"start":11042,"end":11095},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":11095},"to":{"change":3,"start":47480,"end":47513},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":1827},"to":{"change":3,"start":47480,"end":47513},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | 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r)\n"}]}},{"Replacement":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":84,"ins":{"up_context":[{"change":3,"pos":8057}],"down_context":[{"change":3,"pos":8538}],"flag":"BLOCK","start":40494,"end":40555,"inode":{"change":3,"pos":5929}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":3,"pos":8057},"to":{"change":3,"start":8524,"end":8538},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":8407},"to":{"change":3,"start":8524,"end":8538},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":8524},"to":{"change":3,"start":8524,"end":8538},"introduced_by":3}],"inode":{"change":3,"pos":5929}},"ins_contents":[{"Add":" L: Alloc + super::super::page_unsized::AllocWrite,"}],"del_contents":[{"Del":" L: Alloc,\n"}]}},{"Edit":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":89,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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};\n"}]}},{"Edit":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":105,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":8993}],"down_context":[{"change":3,"pos":9051}],"flag":"BLOCK","start":40618,"end":40824,"inode":{"change":3,"pos":5929}}},"contents":[{"Add":""},{"Add":" // Find the split entry (i.e. the entry going up in the B"},{"Add":" // tree). Then, mid_child is the right child of the split"},{"Add":" // key/value, and `s1` is the offsets of the right side of the"},{"Add":" // split."}]}},{"Edit":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":114,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":9225}],"down_context":[{"change":3,"pos":9225}],"flag":"BLOCK","start":40825,"end":40924,"inode":{"change":3,"pos":5929}}},"contents":[{"Add":" // Else, the split key is the first element of `s1`: set the"},{"Add":" // new, updated `s1`."}]}},{"Replacement":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":123,"ins":{"up_context":[{"change":3,"pos":9527}],"down_context":[{"change":3,"pos":11374}],"flag":"BLOCK","start":40925,"end":41060,"inode":{"change":3,"pos":5929}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":9527},"to":{"change":3,"start":11269,"end":11374},"introduced_by":3}],"inode":{"change":3,"pos":5929}},"ins_contents":[{"Add":" // If we are here, u >= k, i.e. the insertion is in the"},{"Add":" // right-hand side of the split, or is the split entry itself."}],"del_contents":[{"Del":" // If we are here, u >= k, i.e. the insertion is in the right-hand\n // side of the split.\n"}]}},{"Edit":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":128,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":11507}],"down_context":[{"change":3,"pos":11507}],"flag":"BLOCK","start":41061,"end":41180,"inode":{"change":3,"pos":5929}}},"contents":[{"Add":" // if we're inserting in the right-hand side, clone to the"},{"Add":" // newly allocated `right` page, by"}]}},{"Edit":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":131,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":11534}],"down_context":[{"change":3,"pos":11534}],"flag":"BLOCK","start":41181,"end":41485,"inode":{"change":3,"pos":5929}}},"contents":[{"Add":""},{"Add":" // Splitting the offsets to make space for an insertion,"},{"Add":" // and insert in the middle."},{"Add":" //"},{"Add":" // Off-by-one error? Nope: since `k` is the split entry,"},{"Add":" // the right page starts at index `k + 1`, hence if `u =="},{"Add":" // k + 1`, `kk` must be 0."}]}},{"Replacement":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":142,"ins":{"up_context":[{"change":3,"pos":11760}],"down_context":[{"change":3,"pos":11824}],"flag":"BLOCK","start":41486,"end":41548,"inode":{"change":3,"pos":5929}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":11760},"to":{"change":3,"start":11760,"end":11824},"introduced_by":3}],"inode":{"change":3,"pos":5929}},"ins_contents":[{"Add":" L::alloc_write(&mut right, k0, v0, l, r, &mut n);"}],"del_contents":[{"Del":" alloc::(&mut right, k0, v0, l, r, &mut n);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":145,"ins":{"up_context":[{"change":3,"pos":11912}],"down_context":[{"change":3,"pos":12009}],"flag":"BLOCK","start":41549,"end":41733,"inode":{"change":3,"pos":5929}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":11912},"to":{"change":3,"start":11912,"end":12009},"introduced_by":3}],"inode":{"change":3,"pos":5929}},"ins_contents":[{"Add":" // Else, just clone the page, we'll take care of returning"},{"Add":" // the split entry afterwards."},{"Add":" clone::(page.as_page(), &mut right, s1, &mut 0);"}],"del_contents":[{"Del":" let mut n = 0;\n clone::(page.as_page(), &mut right, s1, &mut n);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":150,"ins":{"up_context":[{"change":3,"pos":12020}],"down_context":[{"change":3,"pos":9622}],"flag":"BLOCK","start":41734,"end":41774,"inode":{"change":3,"pos":5929}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":3,"pos":12020},"to":{"change":3,"start":9527,"end":9566},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":9527},"to":{"change":3,"start":9527,"end":9566},"introduced_by":3}],"inode":{"change":3,"pos":5929}},"ins_contents":[{"Add":" if mutable && page.is_dirty() {"}],"del_contents":[{"Del":" if mutable && hdr.is_dirty() {\n"}]}},{"Replacement":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":157,"ins":{"up_context":[{"change":3,"pos":9934}],"down_context":[{"change":3,"pos":9985}],"flag":"BLOCK","start":41775,"end":41857,"inode":{"change":3,"pos":5929}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":9934},"to":{"change":3,"start":9934,"end":9985},"introduced_by":3}],"inode":{"change":3,"pos":5929}},"ins_contents":[{"Add":" hdr.decr((n - 1 - k) as usize * core::mem::size_of::>());"}],"del_contents":[{"Del":" hdr.decr((n - 1 - k) as usize * size);\n"}]}},{"Edit":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":159,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":10002}],"down_context":[{"change":3,"pos":10002}],"flag":"BLOCK","start":41858,"end":41969,"inode":{"change":3,"pos":5929}}},"contents":[{"Add":" // Else, we need to clone the first `k-1` entries,"},{"Add":" // i.e. `s0`, onto a new left page."}]}},{"Edit":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":167,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":12092}],"down_context":[{"change":3,"pos":12092}],"flag":"BLOCK","start":41970,"end":42171,"inode":{"change":3,"pos":5929}}},"contents":[{"Add":" // Finally, if `u` is the middle element, its left and right"},{"Add":" // children become the leftmost child of the right page, and"},{"Add":" // the rightmost child of the left page, respectively."}]}},{"Edit":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":185,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":11447}],"down_context":[{"change":3,"pos":11447}],"flag":"BLOCK","start":42172,"end":42302,"inode":{"change":3,"pos":5929}}},"contents":[{"Add":" // Else, the insertion is in the new left page. We first clone"},{"Add":" // the left page, inserting (k,v) at its position:"}]}},{"Replacement":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":189,"ins":{"up_context":[{"change":3,"pos":8957}],"down_context":[{"change":3,"pos":12122}],"flag":"BLOCK","start":42303,"end":42338,"inode":{"change":3,"pos":5929}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":11582},"to":{"change":3,"start":11582,"end":11605},"introduced_by":3}],"inode":{"change":3,"pos":5929}},"ins_contents":[{"Add":" // Clone the leftmost page"}],"del_contents":[{"Del":" let mut n = 0;\n"}]}},{"Edit":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":192,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":11714}],"down_context":[{"change":3,"pos":11714}],"flag":"BLOCK","start":42339,"end":42397,"inode":{"change":3,"pos":5929}}},"contents":[{"Add":" // Clone the two sides, with an entry in between."}]}},{"Edit":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":194,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":11764}],"down_context":[{"change":3,"pos":12185}],"flag":"BLOCK","start":42398,"end":42421,"inode":{"change":3,"pos":5929}}},"contents":[{"Add":" let mut n = 0;"}]}},{"Replacement":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":196,"ins":{"up_context":[{"change":3,"pos":12251}],"down_context":[{"change":3,"pos":12252}],"flag":"BLOCK","start":42422,"end":42479,"inode":{"change":3,"pos":5929}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":3,"pos":12251},"to":{"change":3,"start":9024,"end":9083},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":6402},"to":{"change":3,"start":9024,"end":9083},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | 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MutPage;\n"}]}},{"Replacement":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":201,"ins":{"up_context":[{"change":3,"pos":12016}],"down_context":[{"change":3,"pos":8098}],"flag":"BLOCK","start":42504,"end":42795,"inode":{"change":3,"pos":5929}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":12016},"to":{"change":3,"start":12016,"end":12114},"introduced_by":3}],"inode":{"change":3,"pos":5929}},"ins_contents":[{"Add":" // Then, for the right page:"},{"Add":" if mutable && page.is_dirty() {"},{"Add":" // If we can mutate the original page, remove the first"},{"Add":" // `k` entries, and return a pointer to the split key (at"},{"Add":" // position `k` on the page)"},{"Add":" right = MutPage(page);"}],"del_contents":[{"Del":" if mutable && hdr.is_dirty() {\n right = unsafe { core::mem::transmute(page) };\n"}]}},{"Edit":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":215,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":12379}],"down_context":[{"change":3,"pos":12379}],"flag":"BLOCK","start":42796,"end":42839,"inode":{"change":3,"pos":5929}}},"contents":[{"Add":" // Else, clone the right page."}]}},{"Edit":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":218,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":9457}],"down_context":[{"change":3,"pos":12487}],"flag":"BLOCK","start":42840,"end":43062,"inode":{"change":3,"pos":5929}}},"contents":[{"Add":" // The left child of the right page is `mid_child`,"},{"Add":" // i.e. the right child of the split entry."},{"Add":" L::set_right_child(&mut right, -1, mid_child);"},{"Add":" // Clone the rest of the page."}]}},{"Edit":{"inode":{"change":3,"pos":5929},"path":"sanakirja-core/src/btree/page/put.rs","line":223,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":12514},"to":{"change":3,"start":12514,"end":12573},"introduced_by":3}],"inode":{"change":3,"pos":5929}}},"contents":[{"Del":" L::set_right_child(&mut right, -1, mid_child);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":17232},"path":"sanakirja-core/src/btree/page/alloc.rs","line":9,"ins":{"up_context":[{"change":2,"pos":25812}],"down_context":[{"change":3,"pos":17612}],"flag":"BLOCK","start":43063,"end":43129,"inode":{"change":3,"pos":17232}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":2,"pos":25812},"to":{"change":2,"start":25812,"end":25888},"introduced_by":2}],"inode":{"change":3,"pos":17232}},"ins_contents":[{"Add":" fn can_alloc(hdr: &Header) -> bool;"}],"del_contents":[{"Del":" fn can_alloc(hdr: &Header, n: usize) -> bool;\n"}]}},{"Replacement":{"inode":{"change":3,"pos":17232},"path":"sanakirja-core/src/btree/page/alloc.rs","line":12,"ins":{"up_context":[{"change":2,"pos":25960}],"down_context":[{"change":2,"pos":26038}],"flag":"BLOCK","start":43130,"end":43198,"inode":{"change":3,"pos":17232}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":2,"pos":25960},"to":{"change":2,"start":25960,"end":26038},"introduced_by":2}],"inode":{"change":3,"pos":17232}},"ins_contents":[{"Add":" fn can_compact(hdr: &Header) -> bool;"}],"del_contents":[{"Del":" fn can_compact(hdr: &Header, n: usize) -> bool;\n"}]}},{"Replacement":{"inode":{"change":3,"pos":17232},"path":"sanakirja-core/src/btree/page/alloc.rs","line":87,"ins":{"up_context":[{"change":2,"pos":27832}],"down_context":[{"change":2,"pos":27909}],"flag":"BLOCK","start":43199,"end":43266,"inode":{"change":3,"pos":17232}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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PAGE_SIZE\n"}]}},{"Replacement":{"inode":{"change":3,"pos":17232},"path":"sanakirja-core/src/btree/page/alloc.rs","line":95,"ins":{"up_context":[{"change":2,"pos":28219}],"down_context":[{"change":2,"pos":28338}],"flag":"BLOCK","start":43330,"end":43436,"inode":{"change":3,"pos":17232}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":2,"pos":28219},"to":{"change":2,"start":28219,"end":28338},"introduced_by":2}],"inode":{"change":3,"pos":17232}},"ins_contents":[{"Add":" fn can_compact(hdr: &Header) -> bool {"},{"Add":" Self::can_alloc::(hdr)"}],"del_contents":[{"Del":" fn can_compact(hdr: &Header, n: usize) -> bool {\n Self::can_alloc::(hdr, n)\n"}]}},{"Replacement":{"inode":{"change":3,"pos":17232},"path":"sanakirja-core/src/btree/page/alloc.rs","line":197,"ins":{"up_context":[{"change":2,"pos":30600}],"down_context":[{"change":2,"pos":30773}],"flag":"BLOCK","start":43437,"end":43594,"inode":{"change":3,"pos":17232}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":2,"pos":30600},"to":{"change":2,"start":30600,"end":30773},"introduced_by":2}],"inode":{"change":3,"pos":17232}},"ins_contents":[{"Add":" fn can_alloc(hdr: &Header) -> bool {"},{"Add":" (HDR as usize) + (hdr.n() as usize + 1) * 8 + core::mem::size_of::>()"}],"del_contents":[{"Del":" fn can_alloc(hdr: &Header, n: usize) -> bool {\n (HDR as usize) + (hdr.n() as usize) * 8 + n * (8 + core::mem::size_of::>())\n"}]}},{"Replacement":{"inode":{"change":3,"pos":17232},"path":"sanakirja-core/src/btree/page/alloc.rs","line":202,"ins":{"up_context":[{"change":2,"pos":30814}],"down_context":[{"change":2,"pos":30893}],"flag":"BLOCK","start":43595,"end":43664,"inode":{"change":3,"pos":17232}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":2,"pos":30814},"to":{"change":2,"start":30814,"end":30893},"introduced_by":2}],"inode":{"change":3,"pos":17232}},"ins_contents":[{"Add":" fn can_compact(hdr: &Header) -> bool {"}],"del_contents":[{"Del":" fn can_compact(hdr: &Header, n: usize) -> bool {\n"}]}},{"Replacement":{"inode":{"change":3,"pos":17232},"path":"sanakirja-core/src/btree/page/alloc.rs","line":205,"ins":{"up_context":[{"change":2,"pos":30967}],"down_context":[{"change":2,"pos":31027}],"flag":"BLOCK","start":43665,"end":43731,"inode":{"change":3,"pos":17232}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":2,"pos":30967},"to":{"change":2,"start":30967,"end":31027},"introduced_by":2}],"inode":{"change":3,"pos":17232}},"ins_contents":[{"Add":" + 8"},{"Add":" + core::mem::size_of::>()"}],"del_contents":[{"Del":" + n * (8 + core::mem::size_of::>())\n"}]}},{"Edit":{"inode":{"change":3,"pos":17232},"path":"sanakirja-core/src/btree/page/alloc.rs","line":304,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":29961}],"down_context":[],"flag":"BLOCK","start":43732,"end":44816,"inode":{"change":3,"pos":17232}}},"contents":[{"Add":""},{"Add":"impl crate::btree::page_unsized::AllocWrite for Internal {"},{"Add":" fn alloc_write(new: &mut MutPage, k0: &K, v0: &V, l: u64, r: u64, n: &mut isize) {"},{"Add":" alloc_write::(new, k0, v0, l, r, n)"},{"Add":" }"},{"Add":"}"},{"Add":""},{"Add":"impl crate::btree::page_unsized::AllocWrite for Leaf {"},{"Add":" fn alloc_write(new: &mut MutPage, k0: &K, v0: &V, l: u64, r: u64, n: &mut isize) {"},{"Add":" alloc_write::(new, k0, v0, l, r, n)"},{"Add":" }"},{"Add":"}"},{"Add":""},{"Add":"/// Simply allocate an entry in the page, copy it, and set its right"},{"Add":"/// and left children."},{"Add":"fn alloc_write("},{"Add":" new: &mut MutPage,"},{"Add":" k0: &K,"},{"Add":" v0: &V,"},{"Add":" l: u64,"},{"Add":" r: u64,"},{"Add":" n: &mut isize,"},{"Add":") {"},{"Add":" let off_new = L::alloc_insert::(new, n, r);"},{"Add":" unsafe {"},{"Add":" let new_ptr = &mut *(new.0.data.add(off_new as usize) as *mut Tuple);"},{"Add":" core::ptr::copy_nonoverlapping(k0, &mut new_ptr.k, 1);"},{"Add":" core::ptr::copy_nonoverlapping(v0, &mut new_ptr.v, 1);"},{"Add":" }"},{"Add":" if l > 0 {"},{"Add":" L::set_right_child(new, *n - 1, l);"},{"Add":" }"},{"Add":" *n += 1;"},{"Add":"}"}]}},{"Edit":{"inode":{"change":3,"pos":45735},"path":"sanakirja-core/src/btree/mod.rs","line":109,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":9109},"to":{"change":3,"start":10457,"end":10458},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":10458},"to":{"change":3,"start":10458,"end":10522},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":10522},"to":{"change":3,"start":29298,"end":29355},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":29298},"to":{"change":3,"start":29298,"end":29355},"introduced_by":3}],"inode":{"change":3,"pos":45735}}},"contents":[{"Del":"\n"},{"Del":" /// Returns the size of the entry pointed to by the cursor.\n"},{"Del":" fn current_size(p: Page, c: &Self::Cursor) -> usize;\n"}]}},{"Edit":{"inode":{"change":3,"pos":45735},"path":"sanakirja-core/src/btree/mod.rs","line":149,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":10988}],"down_context":[{"change":3,"pos":14162}],"flag":"BLOCK","start":44817,"end":45362,"inode":{"change":3,"pos":45735}}},"contents":[{"Add":" ///"},{"Add":" /// Makes the assumption that `k1v1.is_some()` implies"},{"Add":" /// `replace`. The \"double insertion\" is only ever used when"},{"Add":" /// deleting, and when the right child of a deleted entry (in an"},{"Add":" /// internal node) has split while we were looking for a"},{"Add":" /// replacement for the deleted entry."},{"Add":" ///"},{"Add":" /// Since we only look for replacements in the right child, the"},{"Add":" /// left child of the insertion isn't modified, in which case `l`"},{"Add":" /// and `r` are interpreted as the left and right child of the new"},{"Add":" /// entry, `k1v1`."}]}},{"Replacement":{"inode":{"change":35,"pos":11},"path":"sanakirja/src/tests.rs","line":504,"ins":{"up_context":[{"change":3,"pos":1148}],"down_context":[{"change":3,"pos":9892}],"flag":"BLOCK","start":45363,"end":45409,"inode":{"change":35,"pos":11}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":1148},"to":{"change":3,"start":9834,"end":9854},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":9854},"to":{"change":3,"start":15959,"end":15990},"introduced_by":3}],"inode":{"change":35,"pos":11}},"ins_contents":[{"Add":" for i in 1..2 {"},{"Add":" let n = i * 5000;"}],"del_contents":[{"Del":" for i in 1..3 {\n"},{"Del":" let n = i * 1_000_000;\n"}]}},{"Edit":{"inode":{"change":35,"pos":11},"path":"sanakirja/src/tests.rs","line":528,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":2045}],"down_context":[{"change":3,"pos":2045}],"flag":"BLOCK","start":45410,"end":45468,"inode":{"change":35,"pos":11}}},"contents":[{"Add":" crate::debug::debug(&txn, &[&db], \"debug\", true);"}]}}],"owner":"pijul","repo":"sanakirja","token":"qKEyKRSUab6NwVeDcSr1qPz6X0Xu+coO79EUAdjNvM8=","login":null}

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