{"header":{"message":"Subtransactions","description":null,"timestamp":"2025-12-26T21:25:15.085802509Z","authors":[{}]},"hash":"UYU2LIYDNJAN54C3O4BM3IC7TFZWUM35QP32WQVQTHY5V46JW6CAC","authors":[{"login":"pmeunier","key":"8ES6e1QmLjuQn1DzS2DQRKebzCKPHpdf4E9hfwMqQoe7"}],"deps":{"hashes":[["UYU2LIYDNJAN54C3O4BM3IC7TFZWUM35QP32WQVQTHY5V46JW6CAC","Subtransactions"],["AA",null],["MORZOA7EAL3BEO2Z6FA5RU45A6O353J7WDXCWF2FHRI5AD27BK3QC","Adding a check to avoid incrementing the RC of page 0"],["HMWFIUDS5LITLG5AB2LL6KIHFF6W3Y4LCB4JLZBWIYIIV74PSXQAC","Support for large values + endianness bugs"],["TJ2R4HAZ23H3NW7CJSBXLLXUNPLK25XX33CLOL74NWO32JCG4UZQC","Accessing the root pages (unsafely, of course)"],["KMT3MF5NLEQIPZLHCRYDGQ5EA46HJCG3C2ANEPMZGKGHDK77ADPAC","Drop a database"],["S4V4QZ5CF5LUDYWNR2UMWH6CHJDJ5FPGAZCQYM5GY7FJMJV4NN4QC","Debugging reference-counting for put"],["W2MIZD5BNL7A5HVFWTESF57QU7T6QMEF4RBSLFQXMEEU3XD2NU2QC","Single file databases + CRC for the root pages (checking the other pages makes everything very slow)"],["RLVQDUPYOWVNHTVFCHKNIQYNBRLOFY2UGIJPLD6U5S22AMEF5YSAC","Fixing a double-free error introduced in 1.2.13"],["DASFQGORX56YK5E4Y7GGYZSQQQMUXYTZZ4A6IVWSTI3QGRUORLPAC","Debugging"],["UAQX27N4PI4LHEW6LSHJETIE5MV7JTEMPLTJFYUBMYVPC43H7VOAC","Tests"],["6UVFCERMGSGNRWCVC3GWO5HWV6MSWE433DXBJVC7KRPP6LLJLCSQC","Formatting, debugging, etc."],["CCNPHVQCIGINWTLXCHOASGVWUPBZXFOLM2F7HTKMEA2DMFTOX7TAC","Cleanup, comments, renaming"],["73Z2UB3JGRLFNFORE7D64O4IHIFSZASD4G4FLJ4FJLHANT75MGIAC","Cleanup + comments"],["LSQ6V7M66TEGLJ7QBLRVDX4E7UKJTDQTEXZOS3KGPGFKVXNLPKBQC","Cleanup + docs"],["OHG5NX6KVGKNA7S7SU3MTPOZCN4RRZK2SGZWZ5LIRXUMCYIPUHIAC","Refactoring, drop and the Check trait"],["HCDD6FX7YL5MDK757ZE6MYHB2YHCUAO2Y3Y347JBTG4DNCIJJBIQC","Fixing some comments and reformatting"],["EYNN7RLSFVBWDLRTLNNFUAF46Q6OX3BR5SUEJIOOHBSNP7FVBXGAC","Tests++ (including UUID)"],["QEUTVAZ4F4EJXRDMWDMYXF6XEDMX7YPVG4IIXEKPIR3K54E5W5OAC","Splitting btree::page"],["FZBLNBGNQPNTLBNPNZ2C6DJ5323MZQ2PH54F6ZEKPFCK7TGJFGWAC","Diagnostic tools (add_refs, check_free) + cleanup"],["OFINGD26ZWCRDVVDI2ZIBLMHXKEMJA6MRNLANJYUHQPIJLPA7J2AC","implementing prev() on cursors (+ some cleanup)"],["BYI23QWI44ZINCI32VLVG2JJG3WUZFCYEKNNNLLMXMWQCTKZ6PRAC","More tests"],["3CKCVBXTNSYJIQL5P35V5NHM7C7BQZCSGO7OZMGBZRUUVIQHAZAAC","A few optional storable types"],["6DCQHIFPEH4GZKSRRS32GMKDRPZH4MTCGOUEI7YEUVKWENBF3JWAC","Minor changes after benchmarking"],["OP6SVMOD2GTQ7VNJ4E5KYFG4MIYA7HBMXJTADALMZH4PY7OQRMZQC","Resetting history"],["AOX2XQISHGWNNAFBYRN44Q6AWG7H5DPBK5YMFHK42HQNZ2TMHEJQC","Actually, with the correct functions, Unsized pages are always slower than Sized pages (especially for writing)"],["QKL5HDU2UMPIKJKO4SAB4M4W43RYVCGAGEIUMT4FQQAJFH6QNFSAC","Version bump (self and memmap2)"],["ESUI5EUZUBDPHNN3APU33IFORYPYR6J3WEMEZG57FKF3EH66ZBHAC","Making as_page() unsafe"],["NQBEOCFO4GJZKCE3A6V5LYSCEBQN2JLXPESBRJ65TZCU5JNAHEAQC","Tests cleanup"],["5LSYTRQ6IOVUW26VJW5SWGFEIB7T2N4PVEB6VMNMR5ZHQ75MFOQAC","More docs, example, and fixing the free page diagnostic function for mutable transactions"],["APPY2E7M5NHNC6MFYXSVEKJVAILK7YAZVTVE3W75EK2JNFVS3XBQC","Unsized deletions + custom sizes back"],["QYDGYIZRNFRIQD7RUCY5YAN3F2THZA74E5UOHPIFWSULEJFAFVJQC","Split trait Representable into its mandatory part and an optional part"],["YWFYZNLZ5JHLIFVBRKZK4TSWVPROUPRG77ZB5M7UHT2OKPL4ZSRQC","Cleanup + inter-process concurrency"],["G4JEQLLX6Q7VVFVAEJZAVQXX33MQ36CSCYSMJ5NQM5VZ76DXKU6QC","Debugging synchronisation"],["6DMPXOAT5GQ3BQQOMUZN2GMBQPRA4IB7CCPHTQTIFGO3KWWAKF3QC","More debugging"],["OTWDDJE7TTE73D6BGF4ZN6BH2NFUFLPME2VJ3CPALH463UGWLEIQC","Trait/type cleanup"],["WS4ZQM4RMIHZ6XZKSDQJGHN5SSSWFL4H236USOPUA33S6RC53RFAC","Debugging, tests, etc."],["RV2L6CZWTMUQ2A52YDAFVHDFGURZL3H4SSCDC347UGN23D3J5KZQC","A few comments"],["E4MD6T3LNOYWVFTFFWCUKRNS4M2XVSKRLDWPYHMZHGDNO2T5JREQC","Proofreading and commenting of this crate (massive bug fixes included)"],["3QM7P3RRVYYDEJNFDG3GHZDMSSHPPJC3WQOJGETGREOM4I2A6D5AC","Writing the reference counts when committing"],["XOXTGNPZRTDWNCZ5BI723A6CZ6LLTP4RXIGVWYYK7NQVRWZEZ77AC","Adding a contiguous memory allocator (for large blocks)"],["YXKP4AIWDBIWBBUDWF66YIPG5ECMHNKEV3PX6KYXOVXY3EWG3WGQC","New file locks, with multiple sets of free pages"],["XEU2QVLCHPYOOD4TQIPEEVYOVSFMKFPLJYWEJYXYJAZ7S54KWDZAC","Debugging after plugging this into Pijul"],["H3FVSQIQGFCFKCPXVOSFHP4OSUOBBURJESCZNGQTNDAAD3WQSBEQC","Unsized pages"],["KX3WVNZW5KHVEH6EOQTZ4RBEFFJ3SGF5I467X3JWZ74PURRK4HVAC","Testing/debugging \"rebalance causes split of the root\""],["HN6Z5DU4WYMAIOOSNVHLIIMNF6Q53TNJ7YC27SLKWNXVYCTACQKQC","Cleanup"],["L5CVF6UJYR6FRQA2NULFHGQFID7BGM4D622OJ2TVWRU7EAR57DHAC","Debugging"],["ECPAFJSBBQ6KMGESKYDMSGPSO32TKLWOUQ4ABALKP6U2IEABWN6AC","add env_borrow for Txn and MutTxn"],["DV4A2LR7Q5LAEGAQHLO34PZCHGJUHPAMRZFGT7GUFNKVQKPJNOYQC","Double-inserts (rebalancing near an internal deletion)"],["T73WR2BX2QDQ6APOREBXUKNH52FDLJNBGWPQUYB2TAF2PT7XCL2AC","Cleaner RC increments for keys and values containing references + more comments in `del`"],["X3QVVQIS7B7L3XYZAWL3OOBUXOJ6RMOKQ45YMLLGAHYPEEKZ45ZAC","More debugging (del seems to work now)"],["NXMFNPZ7VWJRLC3M5QJJVTICXCMGE24F3HVIZA7A7RLVMLQMLDVQC","Comments + debugging drop"],["52X5P7NDBQHIJDIYNY3XUPDHHOO3PDPPNKGO2PGLXKVNM3EVECTQC","Cleaning up the unsized part"],["TSMS6W4DOKQNUQ4PEMTLOIODR33VFPN6MMNS73ZPSU4BOQVRGPNAC","Fully commented implementation of Sized nodes + massive cleanup"],["Q7DRIBBRE4MNG4NP3PVIXAJF5PQYLFWYIVK2O4VVLEO6XY3BOSFQC","Debugging replace (which cannot be del+put)"],["YDHYZA77LFQ7RSKTVOTOQRL7EUSXMWYOSJAE5YAH6HLHE64B75LQC","Adding the RootPage trait to access the raw bytes of a root page (needed in libpijul)"],["PUOGOIJ3SCPHJADRYHIQJXIUQMJFKGFMHY4HWEQI6VQNNDSHVXJAC","Debugging, impls and version bump"],["T7QB6QEPWBXAU3RL7LE4GRDWWNQ65ZU2YNNTWBYLORJOABAQFEZQC","Adding debug.rs"]],"deps":["MORZOA7EAL3BEO2Z6FA5RU45A6O353J7WDXCWF2FHRI5AD27BK3QC","HMWFIUDS5LITLG5AB2LL6KIHFF6W3Y4LCB4JLZBWIYIIV74PSXQAC"],"known":["OP6SVMOD2GTQ7VNJ4E5KYFG4MIYA7HBMXJTADALMZH4PY7OQRMZQC","WS4ZQM4RMIHZ6XZKSDQJGHN5SSSWFL4H236USOPUA33S6RC53RFAC","UAQX27N4PI4LHEW6LSHJETIE5MV7JTEMPLTJFYUBMYVPC43H7VOAC","X3QVVQIS7B7L3XYZAWL3OOBUXOJ6RMOKQ45YMLLGAHYPEEKZ45ZAC","NQBEOCFO4GJZKCE3A6V5LYSCEBQN2JLXPESBRJ65TZCU5JNAHEAQC","YXKP4AIWDBIWBBUDWF66YIPG5ECMHNKEV3PX6KYXOVXY3EWG3WGQC","YWFYZNLZ5JHLIFVBRKZK4TSWVPROUPRG77ZB5M7UHT2OKPL4ZSRQC","DV4A2LR7Q5LAEGAQHLO34PZCHGJUHPAMRZFGT7GUFNKVQKPJNOYQC","QEUTVAZ4F4EJXRDMWDMYXF6XEDMX7YPVG4IIXEKPIR3K54E5W5OAC","6DMPXOAT5GQ3BQQOMUZN2GMBQPRA4IB7CCPHTQTIFGO3KWWAKF3QC","S4V4QZ5CF5LUDYWNR2UMWH6CHJDJ5FPGAZCQYM5GY7FJMJV4NN4QC","OTWDDJE7TTE73D6BGF4ZN6BH2NFUFLPME2VJ3CPALH463UGWLEIQC","H3FVSQIQGFCFKCPXVOSFHP4OSUOBBURJESCZNGQTNDAAD3WQSBEQC","6UVFCERMGSGNRWCVC3GWO5HWV6MSWE433DXBJVC7KRPP6LLJLCSQC","APPY2E7M5NHNC6MFYXSVEKJVAILK7YAZVTVE3W75EK2JNFVS3XBQC","AOX2XQISHGWNNAFBYRN44Q6AWG7H5DPBK5YMFHK42HQNZ2TMHEJQC","G4JEQLLX6Q7VVFVAEJZAVQXX33MQ36CSCYSMJ5NQM5VZ76DXKU6QC","KMT3MF5NLEQIPZLHCRYDGQ5EA46HJCG3C2ANEPMZGKGHDK77ADPAC","6DCQHIFPEH4GZKSRRS32GMKDRPZH4MTCGOUEI7YEUVKWENBF3JWAC","KX3WVNZW5KHVEH6EOQTZ4RBEFFJ3SGF5I467X3JWZ74PURRK4HVAC","EYNN7RLSFVBWDLRTLNNFUAF46Q6OX3BR5SUEJIOOHBSNP7FVBXGAC","OFINGD26ZWCRDVVDI2ZIBLMHXKEMJA6MRNLANJYUHQPIJLPA7J2AC","XEU2QVLCHPYOOD4TQIPEEVYOVSFMKFPLJYWEJYXYJAZ7S54KWDZAC","T73WR2BX2QDQ6APOREBXUKNH52FDLJNBGWPQUYB2TAF2PT7XCL2AC","Q7DRIBBRE4MNG4NP3PVIXAJF5PQYLFWYIVK2O4VVLEO6XY3BOSFQC","73Z2UB3JGRLFNFORE7D64O4IHIFSZASD4G4FLJ4FJLHANT75MGIAC","NXMFNPZ7VWJRLC3M5QJJVTICXCMGE24F3HVIZA7A7RLVMLQMLDVQC","RV2L6CZWTMUQ2A52YDAFVHDFGURZL3H4SSCDC347UGN23D3J5KZQC","HN6Z5DU4WYMAIOOSNVHLIIMNF6Q53TNJ7YC27SLKWNXVYCTACQKQC","ESUI5EUZUBDPHNN3APU33IFORYPYR6J3WEMEZG57FKF3EH66ZBHAC","LSQ6V7M66TEGLJ7QBLRVDX4E7UKJTDQTEXZOS3KGPGFKVXNLPKBQC","QYDGYIZRNFRIQD7RUCY5YAN3F2THZA74E5UOHPIFWSULEJFAFVJQC","CCNPHVQCIGINWTLXCHOASGVWUPBZXFOLM2F7HTKMEA2DMFTOX7TAC","TSMS6W4DOKQNUQ4PEMTLOIODR33VFPN6MMNS73ZPSU4BOQVRGPNAC","52X5P7NDBQHIJDIYNY3XUPDHHOO3PDPPNKGO2PGLXKVNM3EVECTQC","W2MIZD5BNL7A5HVFWTESF57QU7T6QMEF4RBSLFQXMEEU3XD2NU2QC","E4MD6T3LNOYWVFTFFWCUKRNS4M2XVSKRLDWPYHMZHGDNO2T5JREQC","3QM7P3RRVYYDEJNFDG3GHZDMSSHPPJC3WQOJGETGREOM4I2A6D5AC","FZBLNBGNQPNTLBNPNZ2C6DJ5323MZQ2PH54F6ZEKPFCK7TGJFGWAC","5LSYTRQ6IOVUW26VJW5SWGFEIB7T2N4PVEB6VMNMR5ZHQ75MFOQAC","L5CVF6UJYR6FRQA2NULFHGQFID7BGM4D622OJ2TVWRU7EAR57DHAC","DASFQGORX56YK5E4Y7GGYZSQQQMUXYTZZ4A6IVWSTI3QGRUORLPAC","TJ2R4HAZ23H3NW7CJSBXLLXUNPLK25XX33CLOL74NWO32JCG4UZQC","ECPAFJSBBQ6KMGESKYDMSGPSO32TKLWOUQ4ABALKP6U2IEABWN6AC","YDHYZA77LFQ7RSKTVOTOQRL7EUSXMWYOSJAE5YAH6HLHE64B75LQC","HCDD6FX7YL5MDK757ZE6MYHB2YHCUAO2Y3Y347JBTG4DNCIJJBIQC","BYI23QWI44ZINCI32VLVG2JJG3WUZFCYEKNNNLLMXMWQCTKZ6PRAC","3CKCVBXTNSYJIQL5P35V5NHM7C7BQZCSGO7OZMGBZRUUVIQHAZAAC","OHG5NX6KVGKNA7S7SU3MTPOZCN4RRZK2SGZWZ5LIRXUMCYIPUHIAC","RLVQDUPYOWVNHTVFCHKNIQYNBRLOFY2UGIJPLD6U5S22AMEF5YSAC","XOXTGNPZRTDWNCZ5BI723A6CZ6LLTP4RXIGVWYYK7NQVRWZEZ77AC","QKL5HDU2UMPIKJKO4SAB4M4W43RYVCGAGEIUMT4FQQAJFH6QNFSAC"]},"hunks":[{"Replacement":{"inode":{"change":4,"pos":91},"path":"sanakirja-core/src/lib.rs","line":471,"ins":{"up_context":[{"change":4,"pos":1856}],"down_context":[{"change":4,"pos":1509}],"flag":"BLOCK","start":0,"end":47,"inode":{"change":4,"pos":91}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":4,"pos":1856},"to":{"change":4,"start":1795,"end":1831},"introduced_by":4},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":412},"to":{"change":4,"start":1795,"end":1831},"introduced_by":4}],"inode":{"change":4,"pos":91}},"ins_contents":[{"Add":" pub fn as_page<'a>(&'a self) -> Page<'a> {"}],"del_contents":[{"Del":" pub fn as_page(&self) -> Page {\n"}]}},{"Edit":{"inode":{"change":4,"pos":91},"path":"sanakirja-core/src/lib.rs","line":547,"atom":{"NewVertex":{"up_context":[{"change":57,"pos":65}],"down_context":[{"change":4,"pos":1647}],"flag":"BLOCK","start":48,"end":51,"inode":{"change":4,"pos":91}}},"contents":[{"Add":"/*"}]}},{"Edit":{"inode":{"change":4,"pos":91},"path":"sanakirja-core/src/lib.rs","line":554,"atom":{"NewVertex":{"up_context":[{"change":4,"pos":2731}],"down_context":[{"change":4,"pos":2731}],"flag":"BLOCK","start":52,"end":56,"inode":{"change":4,"pos":91}}},"contents":[{"Add":" */"}]}},{"Edit":{"inode":{"change":4,"pos":91},"path":"sanakirja-core/src/lib.rs","line":609,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":36683}],"down_context":[{"change":4,"pos":3427}],"flag":"BLOCK","start":57,"end":148,"inode":{"change":4,"pos":91}}},"contents":[{"Add":""},{"Add":" fn is_dirty(&self, p: &CowPage) -> bool {"},{"Add":" unsafe { (*p.data) & 1 != 0 }"},{"Add":" }"}]}},{"Replacement":{"inode":{"change":4,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":421,"ins":{"up_context":[{"change":4,"pos":4814}],"down_context":[{"change":4,"pos":9926}],"flag":"BLOCK","start":149,"end":204,"inode":{"change":4,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":4814},"to":{"change":4,"start":2137,"end":2188},"introduced_by":4}],"inode":{"change":4,"pos":2014}},"ins_contents":[{"Add":" let page = if mutable && txn.is_dirty(&page) {"}],"del_contents":[{"Del":" let page = if mutable && page.is_dirty() {\n"}]}},{"Replacement":{"inode":{"change":4,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":438,"ins":{"up_context":[{"change":4,"pos":10370}],"down_context":[{"change":4,"pos":5689}],"flag":"BLOCK","start":205,"end":280,"inode":{"change":4,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":10370},"to":{"change":4,"start":10370,"end":10441},"introduced_by":4}],"inode":{"change":4,"pos":2014}},"ins_contents":[{"Add":" freed = page.offset | if txn.is_dirty(&page) { 1 } else { 0 };"}],"del_contents":[{"Del":" freed = page.offset | if page.is_dirty() { 1 } else { 0 };\n"}]}},{"Replacement":{"inode":{"change":4,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":465,"ins":{"up_context":[{"change":4,"pos":11071}],"down_context":[{"change":4,"pos":6199}],"flag":"BLOCK","start":281,"end":325,"inode":{"change":4,"pos":2014}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":4,"pos":11071},"to":{"change":4,"start":2247,"end":2287},"introduced_by":4},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":710},"to":{"change":4,"start":2247,"end":2287},"introduced_by":4}],"inode":{"change":4,"pos":2014}},"ins_contents":[{"Add":" if mutable && txn.is_dirty(&page) {"}],"del_contents":[{"Del":" if mutable && page.is_dirty() {\n"}]}},{"Replacement":{"inode":{"change":4,"pos":2014},"path":"sanakirja-core/src/btree/page_unsized.rs","line":819,"ins":{"up_context":[{"change":4,"pos":20241}],"down_context":[{"change":4,"pos":20355}],"flag":"BLOCK","start":326,"end":448,"inode":{"change":4,"pos":2014}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":20241},"to":{"change":4,"start":20241,"end":20355},"introduced_by":4}],"inode":{"change":4,"pos":2014}},"ins_contents":[{"Add":" let b0 = if txn.is_dirty(&m.modified.page) { 1 } else { 0 };"},{"Add":" let b1 = if txn.is_dirty(&m.other) { 1 } else { 0 };"}],"del_contents":[{"Del":" let b0 = if m.modified.page.is_dirty() { 1 } else { 0 };\n let b1 = if m.other.is_dirty() { 1 } else { 0 };\n"}]}},{"Replacement":{"inode":{"change":4,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":30,"ins":{"up_context":[{"change":4,"pos":1976}],"down_context":[{"change":3,"pos":40596}],"flag":"BLOCK","start":449,"end":504,"inode":{"change":4,"pos":22926}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":1976},"to":{"change":4,"start":5000,"end":5051},"introduced_by":4}],"inode":{"change":4,"pos":22926}},"ins_contents":[{"Add":" let is_dirty = txn.is_dirty(&m.modified.page);"}],"del_contents":[{"Del":" let is_dirty = m.modified.page.is_dirty();\n"}]}},{"Replacement":{"inode":{"change":4,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":71,"ins":{"up_context":[{"change":4,"pos":1165}],"down_context":[{"change":4,"pos":1977}],"flag":"BLOCK","start":505,"end":560,"inode":{"change":4,"pos":22926}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":4,"pos":1165},"to":{"change":4,"start":5107,"end":5158},"introduced_by":4},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":24156},"to":{"change":4,"start":5107,"end":5158},"introduced_by":4}],"inode":{"change":4,"pos":22926}},"ins_contents":[{"Add":" let is_dirty = txn.is_dirty(&m.modified.page);"}],"del_contents":[{"Del":" let is_dirty = m.modified.page.is_dirty();\n"}]}},{"Replacement":{"inode":{"change":4,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":103,"ins":{"up_context":[{"change":4,"pos":1875}],"down_context":[{"change":4,"pos":1926}],"flag":"BLOCK","start":561,"end":616,"inode":{"change":4,"pos":22926}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":1875},"to":{"change":4,"start":1875,"end":1926},"introduced_by":4}],"inode":{"change":4,"pos":22926}},"ins_contents":[{"Add":" let is_dirty = txn.is_dirty(&m.modified.page);"}],"del_contents":[{"Del":" let is_dirty = m.modified.page.is_dirty();\n"}]}},{"Replacement":{"inode":{"change":4,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":147,"ins":{"up_context":[{"change":4,"pos":22549}],"down_context":[{"change":4,"pos":2406}],"flag":"BLOCK","start":617,"end":660,"inode":{"change":4,"pos":22926}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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m.modified.page.is_dirty();\n"}]}},{"Replacement":{"inode":{"change":4,"pos":22926},"path":"sanakirja-core/src/btree/page_unsized/rebalance.rs","line":238,"ins":{"up_context":[{"change":4,"pos":3170}],"down_context":[{"change":4,"pos":23612}],"flag":"BLOCK","start":717,"end":772,"inode":{"change":4,"pos":22926}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":4,"pos":3170},"to":{"change":4,"start":5856,"end":5907},"introduced_by":4},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":26272},"to":{"change":4,"start":5856,"end":5907},"introduced_by":4}],"inode":{"change":4,"pos":22926}},"ins_contents":[{"Add":" let is_dirty = txn.is_dirty(&m.modified.page);"}],"del_contents":[{"Del":" let is_dirty = 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txn.mut_txn_begin();"},{"Add":" let mut db = subtxn.root_db::>(0).unwrap();"},{"Add":" for i in 0..n {"},{"Add":" put(&mut subtxn, &mut db, &(n + i), &i).unwrap();"},{"Add":" }"},{"Add":" assert!(get(&subtxn, &db, &(n + 10), None).unwrap().is_some());"},{"Add":" subtxn.abort()"},{"Add":" };"},{"Add":" assert_eq!(get(&txn, &db, &(n + 10), None).unwrap(), None)"}]}},{"Replacement":{"inode":{"change":4,"pos":11},"path":"sanakirja/src/tests.rs","line":126,"ins":{"up_context":[{"change":3,"pos":54726}],"down_context":[{"change":3,"pos":54803}],"flag":"BLOCK","start":3090,"end":3163,"inode":{"change":4,"pos":11}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":54726},"to":{"change":3,"start":54726,"end":54803},"introduced_by":3}],"inode":{"change":4,"pos":11}},"ins_contents":[{"Add":" let mut db = create_db::, U, V>(&mut txn).unwrap();"}],"del_contents":[{"Del":" let mut db = create_db::, U, V>(&mut 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sanakirja_core::btree::page_unsized::Page;\n"},{"Del":"type P = sanakirja_core::btree::page::Page;\n"}]}},{"Replacement":{"inode":{"change":4,"pos":11},"path":"sanakirja/src/tests.rs","line":893,"ins":{"up_context":[{"change":3,"pos":81342}],"down_context":[{"change":3,"pos":81440}],"flag":"BLOCK","start":4380,"end":4474,"inode":{"change":4,"pos":11}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":81342},"to":{"change":3,"start":81342,"end":81440},"introduced_by":3}],"inode":{"change":4,"pos":11}},"ins_contents":[{"Add":" let mut db = create_db_::, u64, [u8], UP>(&mut txn).unwrap();"}],"del_contents":[{"Del":" let mut db = create_db_::, u64, [u8], UP>(&mut 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Unmodified RCs compared to the"},{"Add":" /// parent aren't stored."},{"Add":" child_rc: std::collections::HashMap,"}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":35,"atom":{"NewVertex":{"up_context":[{"change":4,"pos":7290}],"down_context":[{"change":4,"pos":80470}],"flag":"BLOCK","start":5901,"end":5986,"inode":{"change":4,"pos":80166}}},"contents":[{"Add":" /// root page if we need to modify it."},{"Add":" child_page: Option>,"},{"Add":""}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":63,"atom":{"NewVertex":{"up_context":[{"change":4,"pos":329}],"down_context":[{"change":4,"pos":8265}],"flag":"BLOCK","start":5987,"end":6011,"inode":{"change":4,"pos":80166}}},"contents":[{"Add":""},{"Add":" roots: Vec,"},{"Add":"}"}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":67,"atom":{"NewVertex":{"up_context":[{"change":4,"pos":8266}],"down_context":[{"change":4,"pos":2818}],"flag":"BLOCK","start":6012,"end":6408,"inode":{"change":4,"pos":80166}}},"contents":[{"Add":"/// A mutable transaction."},{"Add":"pub struct SubTxn, Parent> {"},{"Add":" length: u64,"},{"Add":" parent: Parent,"},{"Add":" child_rc: std::collections::HashMap,"},{"Add":" child_page: Option>,"},{"Add":" occupied_owned_pages: std::collections::HashMap,"},{"Add":" free_owned_pages: Vec,"},{"Add":" free_pages: Vec,"},{"Add":" initial_free: Vec,"},{"Add":" initial_allocated: Vec,"}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":79,"atom":{"NewVertex":{"up_context":[{"change":4,"pos":2839}],"down_context":[{"change":4,"pos":80900}],"flag":"BLOCK","start":6409,"end":6447,"inode":{"change":4,"pos":80166}}},"contents":[{"Add":" env: std::marker::PhantomData,"}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":82,"ins":{"up_context":[{"change":4,"pos":80903}],"down_context":[{"change":4,"pos":8267}],"flag":"BLOCK","start":6448,"end":6481,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":80903},"to":{"change":4,"start":0,"end":39},"introduced_by":4}],"inode":{"change":4,"pos":80166}},"ins_contents":[{"Add":"impl> MutTxn {"}],"del_contents":[{"Del":"impl, T> MutTxn {\n"}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":87,"atom":{"NewVertex":{"up_context":[{"change":4,"pos":8357}],"down_context":[{"change":4,"pos":119}],"flag":"BLOCK","start":6482,"end":7148,"inode":{"change":4,"pos":80166}}},"contents":[{"Add":""},{"Add":" fn set_rc(&mut self, off: u64, rc: usize) -> Result<(), Error> {"},{"Add":" /*if self.parent.is_some() {"},{"Add":" self.child_rc.insert(off, rc);"},{"Add":" } else*/"},{"Add":" if let Some(mut rc_db) = self.rc.take() {"},{"Add":" let x = if rc >= 2 {"},{"Add":" btree::put(self, &mut rc_db, &L64((off | (rc as u64)).to_le()), &())"},{"Add":" } else {"},{"Add":" let mut curs = btree::cursor::Cursor::new(self, &rc_db)?;"},{"Add":" curs.set(self, &L64(off.to_le()), None)?;"},{"Add":" btree::del::del_at_cursor(self, &mut rc_db, &mut curs, true)"},{"Add":" };"},{"Add":" self.rc = Some(rc_db);"},{"Add":" x?;"},{"Add":" }"},{"Add":" Ok(())"},{"Add":" }"}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":107,"atom":{"NewVertex":{"up_context":[{"change":4,"pos":122}],"down_context":[{"change":4,"pos":7604}],"flag":"BLOCK","start":7149,"end":7672,"inode":{"change":4,"pos":80166}}},"contents":[{"Add":"impl> Borrow for MutTxn {"},{"Add":" /// Borrow env"},{"Add":" fn borrow(&self) -> &Env {"},{"Add":" self.env.borrow()"},{"Add":" }"},{"Add":"}"},{"Add":""},{"Add":"impl, T> Borrow for SubTxn {"},{"Add":" /// Borrow env"},{"Add":" fn borrow(&self) -> &T {"},{"Add":" self.parent.borrow()"},{"Add":" }"},{"Add":"}"},{"Add":""},{"Add":"impl<'a, E: Borrow> Borrow for &'a MutTxn {"},{"Add":" fn borrow(&self) -> &Env {"},{"Add":" self.env.borrow()"},{"Add":" }"},{"Add":"}"},{"Add":""},{"Add":"impl<'a, E: Borrow> Borrow for &'a mut MutTxn {"},{"Add":" fn borrow(&self) -> &Env {"},{"Add":" self.env.borrow()"},{"Add":" }"},{"Add":"}"},{"Add":""}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":135,"ins":{"up_context":[{"change":4,"pos":7735}],"down_context":[{"change":4,"pos":80962}],"flag":"BLOCK","start":7673,"end":7715,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":4,"pos":7735},"to":{"change":4,"start":99,"end":147},"introduced_by":4},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":80903},"to":{"change":4,"start":99,"end":147},"introduced_by":4}],"inode":{"change":4,"pos":80166}},"ins_contents":[{"Add":"impl> Drop for MutTxn {"}],"del_contents":[{"Del":"impl, T> Drop for MutTxn {\n"}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":137,"ins":{"up_context":[{"change":4,"pos":80987}],"down_context":[{"change":4,"pos":81129}],"flag":"BLOCK","start":7716,"end":7922,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":80987},"to":{"change":4,"start":24,"end":299},"introduced_by":4}],"inode":{"change":4,"pos":80166}},"ins_contents":[{"Add":" let env = self.env.borrow();"},{"Add":" unsafe {"},{"Add":" env.mut_txn_unlock().unwrap_or(());"},{"Add":" env.roots[self.root].rw.unlock_exclusive();"},{"Add":" env.unlock(self.root).unwrap_or(())"}],"del_contents":[{"Del":" if self.parent.is_none() {\n let env = self.env.borrow();\n unsafe {\n env.mut_txn_unlock().unwrap_or(());\n env.roots[self.root].rw.unlock_exclusive();\n env.unlock(self.root).unwrap_or(())\n }\n"}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":143,"atom":{"NewVertex":{"up_context":[{"change":4,"pos":81139}],"down_context":[{"change":4,"pos":81139}],"flag":"BLOCK","start":7923,"end":8021,"inode":{"change":4,"pos":80166}}},"contents":[{"Add":" }"},{"Add":"}"},{"Add":""},{"Add":"impl, T> SubTxn {"},{"Add":" pub fn abort(self) -> T {"},{"Add":" self.parent"}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":155,"atom":{"NewVertex":{"up_context":[{"change":4,"pos":81207}],"down_context":[{"change":4,"pos":81207}],"flag":"BLOCK","start":8022,"end":8106,"inode":{"change":4,"pos":80166}}},"contents":[{"Add":" /// Parent of this transaction, if any (and `()` on `MutTxn`)."},{"Add":" type Parent;"}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":158,"ins":{"up_context":[{"change":4,"pos":81239}],"down_context":[{"change":4,"pos":81281}],"flag":"BLOCK","start":8107,"end":8159,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":81239},"to":{"change":4,"start":81239,"end":81281},"introduced_by":4}],"inode":{"change":4,"pos":80166}},"ins_contents":[{"Add":" fn commit(self) -> Result;"}],"del_contents":[{"Del":" fn commit(self) -> Result<(), Error>;\n"}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":163,"ins":{"up_context":[{"change":4,"pos":8146}],"down_context":[{"change":4,"pos":81511}],"flag":"BLOCK","start":8160,"end":8360,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":4,"pos":8146},"to":{"change":4,"start":318,"end":391},"introduced_by":4},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":81284},"to":{"change":4,"start":318,"end":391},"introduced_by":4},{"previous":"","flag":"DELETED","from":{"change":4,"pos":391},"to":{"change":4,"start":37309,"end":37356},"introduced_by":4},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":81368},"to":{"change":4,"start":37309,"end":37356},"introduced_by":4},{"previous":"BLOCK","flag":"BLOCK | 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root_page.as_ptr(),"},{"Add":" self.parent.root_page_mut().as_mut_ptr(),"},{"Add":" 4064,"},{"Add":" );"},{"Add":" }"},{"Add":" }"},{"Add":""},{"Add":" for (page, rc) in self.child_rc.drain() {"},{"Add":" // If the RC reaches 0, the page has already been freed in the relevant call to decr_rc."},{"Add":" self.parent.set_rc(page, rc)?;"},{"Add":" }"},{"Add":""}],"del_contents":[{"Del":" .extend(self.occupied_owned_pages.drain(..));\n"},{"Del":" parent.free_owned_pages.extend(self.free_owned_pages.iter());\n parent.free_pages.extend(self.free_pages.iter());\n"},{"Del":" parent.initial_free = std::mem::replace(&mut self.initial_free, Vec::new());\n parent.initial_allocated = std::mem::replace(&mut self.initial_allocated, Vec::new());\n"}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":194,"ins":{"up_context":[{"change":4,"pos":81852}],"down_context":[{"change":4,"pos":81894}],"flag":"BLOCK","start":9289,"end":9331,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":81852},"to":{"change":4,"start":603,"end":640},"introduced_by":4}],"inode":{"change":4,"pos":80166}},"ins_contents":[{"Add":" self.parent.roots[u] = *v"}],"del_contents":[{"Del":" parent.roots[u] = *v\n"}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":197,"atom":{"NewVertex":{"up_context":[{"change":4,"pos":81918}],"down_context":[{"change":4,"pos":2840}],"flag":"BLOCK","start":9332,"end":9333,"inode":{"change":4,"pos":80166}}},"contents":[{"Add":""}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":200,"ins":{"up_context":[{"change":4,"pos":2918}],"down_context":[{"change":4,"pos":3032}],"flag":"BLOCK","start":9334,"end":9448,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":2918},"to":{"change":4,"start":641,"end":745},"introduced_by":4}],"inode":{"change":4,"pos":80166}},"ins_contents":[{"Add":" if self.parent.roots.get(n).is_none() {"},{"Add":" self.parent.roots.resize(n + 1, 0u64)"}],"del_contents":[{"Del":" if parent.roots.get(n).is_none() {\n parent.roots.resize(n + 1, 0u64)\n"}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":203,"ins":{"up_context":[{"change":4,"pos":3050}],"down_context":[{"change":4,"pos":3091}],"flag":"BLOCK","start":9449,"end":9490,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":3050},"to":{"change":4,"start":746,"end":782},"introduced_by":4}],"inode":{"change":4,"pos":80166}},"ins_contents":[{"Add":" self.parent.roots[n] = r"}],"del_contents":[{"Del":" parent.roots[n] = r\n"}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":206,"ins":{"up_context":[{"change":4,"pos":3115}],"down_context":[{"change":4,"pos":81933}],"flag":"BLOCK","start":9491,"end":10839,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":4,"pos":3115},"to":{"change":4,"start":81918,"end":81933},"introduced_by":4},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":81918},"to":{"change":4,"start":81918,"end":81933},"introduced_by":4}],"inode":{"change":4,"pos":80166}},"ins_contents":[{"Add":" Ok(self.parent)"},{"Add":" }"},{"Add":"}"},{"Add":""},{"Add":"impl + Clone> MutTxn {"},{"Add":" /// Begin a mutable sub-transaction."},{"Add":" pub fn mut_txn_begin(self) -> SubTxn {"},{"Add":" SubTxn {"},{"Add":" length: self.length,"},{"Add":" child_rc: std::collections::HashMap::new(),"},{"Add":" child_page: None,"},{"Add":" occupied_owned_pages: std::collections::HashMap::new(),"},{"Add":" free_owned_pages: Vec::new(),"},{"Add":" free_pages: Vec::new(),"},{"Add":" initial_free: self.initial_free.clone(),"},{"Add":" initial_allocated: self.initial_allocated.clone(),"},{"Add":" roots: self.roots.clone(),"},{"Add":" parent: self,"},{"Add":" env: std::marker::PhantomData,"},{"Add":" }"},{"Add":" }"},{"Add":"}"},{"Add":""},{"Add":"impl + Clone, T> SubTxn {"},{"Add":" /// Begin a mutable sub-transaction."},{"Add":" pub fn mut_txn_begin(self) -> SubTxn {"},{"Add":" SubTxn {"},{"Add":" length: self.length,"},{"Add":" child_rc: std::collections::HashMap::new(),"},{"Add":" child_page: None,"},{"Add":" occupied_owned_pages: std::collections::HashMap::new(),"},{"Add":" free_owned_pages: Vec::new(),"},{"Add":" free_pages: Vec::new(),"},{"Add":" initial_free: self.initial_free.clone(),"},{"Add":" initial_allocated: self.initial_allocated.clone(),"},{"Add":" roots: self.roots.clone(),"},{"Add":" parent: self,"},{"Add":" env: std::marker::PhantomData,"},{"Add":" }"}],"del_contents":[{"Del":" Ok(())\n"}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":285,"ins":{"up_context":[{"change":4,"pos":82078}],"down_context":[{"change":4,"pos":82162}],"flag":"BLOCK","start":10840,"end":10920,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":82078},"to":{"change":4,"start":82078,"end":82162},"introduced_by":4}],"inode":{"change":4,"pos":80166}},"ins_contents":[{"Add":" pub fn mut_txn_begin>(env: E) -> Result, Error> {"}],"del_contents":[{"Del":" pub fn mut_txn_begin>(env: E) -> Result, Error> {\n"}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":324,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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{\n"}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":645,"ins":{"up_context":[{"change":4,"pos":50}],"down_context":[{"change":3,"pos":105231}],"flag":"BLOCK","start":11208,"end":13433,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":50},"to":{"change":3,"start":105162,"end":105231},"introduced_by":3}],"inode":{"change":4,"pos":80166}},"ins_contents":[{"Add":"impl, T: Borrow>> SubTxn {"},{"Add":" /// Pop a free page from the B tree of free pages."},{"Add":" fn free_pages_pop(&mut self) -> Result, Error> {"},{"Add":" while let Some(p) = self.initial_free.pop() {"},{"Add":" if self.parent.borrow().free_for_all(p)? {"},{"Add":" self.initial_allocated.push(p);"},{"Add":" return Ok(Some(p));"},{"Add":" }"},{"Add":" }"},{"Add":" Ok(None)"},{"Add":" }"},{"Add":""},{"Add":" unsafe fn alloc_page_(&mut self, dirty: bool) -> Result {"},{"Add":" // If we have allocated and freed a page in this transaction,"},{"Add":" // use it first."},{"Add":" if let Some(offset) = self.free_owned_pages.pop() {"},{"Add":" assert_ne!(offset, 0);"},{"Add":" debug!(\"free owned pop 0x{:x}\", offset);"},{"Add":" let data = unsafe { self.parent.borrow().env.borrow().find_offset(offset)? };"},{"Add":" let page = MutPage(CowPage { data, offset });"},{"Add":" self.occupied_owned_pages"},{"Add":" .insert(offset, (MutPage(CowPage { data, offset }), dirty));"},{"Add":" Ok(page)"},{"Add":" } else {"},{"Add":" // Else, if there are free pages, take one."},{"Add":" if let Some(offset) = self.free_pages_pop()? {"},{"Add":" assert_ne!(offset, 0);"},{"Add":" debug!(\"free pages pop 0x{:x}\", offset);"},{"Add":" let data = unsafe { self.parent.borrow().env.borrow().find_offset(offset)? };"},{"Add":" self.occupied_owned_pages"},{"Add":" .insert(offset, (MutPage(CowPage { data, offset }), dirty));"},{"Add":" Ok(MutPage(CowPage { data, offset }))"},{"Add":" } else {"},{"Add":" // Else, allocate in the free space."},{"Add":" debug!(\"allocate in the free space 0x{:x}\", self.length);"},{"Add":" let offset = self.length;"},{"Add":" self.length += PAGE_SIZE as u64;"},{"Add":" let data = unsafe { self.parent.borrow().env.borrow().find_offset(offset)? };"},{"Add":" self.occupied_owned_pages"},{"Add":" .insert(offset, (MutPage(CowPage { data, offset }), dirty));"},{"Add":" Ok(MutPage(CowPage { data, offset }))"},{"Add":" }"},{"Add":" }"},{"Add":" }"},{"Add":"}"},{"Add":""},{"Add":"impl, T: Borrow>> sanakirja_core::AllocPage for SubTxn"},{"Add":"where"},{"Add":" Error: From< as sanakirja_core::LoadPage>::Error>,"},{"Add":"{"}],"del_contents":[{"Del":"impl, T> sanakirja_core::AllocPage for MutTxn {\n"}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":703,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":105502}],"down_context":[{"change":3,"pos":105502}],"flag":"BLOCK","start":13434,"end":13549,"inode":{"change":4,"pos":80166}}},"contents":[{"Add":" }"},{"Add":""},{"Add":" unsafe fn alloc_contiguous(&mut self, length: u64) -> Result {"},{"Add":" unimplemented!()"}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":709,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":105509}],"down_context":[{"change":4,"pos":50}],"flag":"BLOCK","start":13550,"end":15249,"inode":{"change":4,"pos":80166}}},"contents":[{"Add":" /// Increment the reference count for page `off`."},{"Add":" fn incr_rc(&mut self, off: u64) -> Result {"},{"Add":" assert!(off > 0);"},{"Add":" // If this is a child transaction, don't update the table."},{"Add":" use std::collections::hash_map::Entry;"},{"Add":" if let Entry::Occupied(mut e) = self.child_rc.entry(off) {"},{"Add":" // If the page has already been changed, update it in"},{"Add":" // `child_rc`"},{"Add":" *e.get_mut() += 1;"},{"Add":" Ok(*e.get())"},{"Add":" } else {"},{"Add":" // Else, take its value from the parent and update the"},{"Add":" // hashmap."},{"Add":" use sanakirja_core::LoadPage;"},{"Add":" let rc = self.parent.borrow().rc(off)? as usize;"},{"Add":" self.child_rc.insert(off, rc + 1);"},{"Add":" Ok(rc + 1)"},{"Add":" }"},{"Add":" }"},{"Add":""},{"Add":" unsafe fn decr_rc(&mut self, off: u64) -> Result {"},{"Add":" let rc = self.decr_rc_(off)?;"},{"Add":" if rc == 0 {}"},{"Add":" Ok(rc)"},{"Add":" }"},{"Add":""},{"Add":" unsafe fn decr_rc_owned(&mut self, off: u64) -> Result {"},{"Add":" let rc = self.decr_rc_(off)?;"},{"Add":" if rc == 0 {"},{"Add":" debug!(\"FREEING OWNED PAGE {:?} {:x}\", off, off);"},{"Add":" assert_ne!(off, 0);"},{"Add":" self.free_owned_pages.push(off);"},{"Add":" }"},{"Add":" Ok(rc)"},{"Add":" }"},{"Add":""},{"Add":" fn is_dirty(&self, off: &sanakirja_core::CowPage) -> bool {"},{"Add":" self.occupied_owned_pages.contains_key(&off.offset)"},{"Add":" }"},{"Add":"}"},{"Add":""},{"Add":"impl> sanakirja_core::AllocPage for MutTxn {"},{"Add":" /// Allocate a single page."},{"Add":" unsafe fn alloc_page(&mut self) -> Result {"},{"Add":" self.alloc_page_(true)"},{"Add":" }"},{"Add":""},{"Add":" /// Allocate a single page."},{"Add":" unsafe fn alloc_page_no_dirty(&mut self) -> Result {"},{"Add":" self.alloc_page_(false)"},{"Add":" }"},{"Add":""}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":860,"atom":{"NewVertex":{"up_context":[{"change":2,"pos":115}],"down_context":[{"change":4,"pos":88500}],"flag":"BLOCK","start":15250,"end":15286,"inode":{"change":4,"pos":80166}}},"contents":[{"Add":""},{"Add":" // Else, update the table."}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":908,"ins":{"up_context":[{"change":4,"pos":19838}],"down_context":[{"change":4,"pos":19877}],"flag":"BLOCK","start":15287,"end":15345,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":19838},"to":{"change":4,"start":19838,"end":19877},"introduced_by":4}],"inode":{"change":4,"pos":80166}},"ins_contents":[{"Add":"impl, T: Borrow>> SubTxn {"}],"del_contents":[{"Del":"impl, A> MutTxn {\n"}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":912,"ins":{"up_context":[{"change":4,"pos":20062}],"down_context":[{"change":4,"pos":20115}],"flag":"BLOCK","start":15346,"end":16482,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":20062},"to":{"change":4,"start":20062,"end":20115},"introduced_by":4}],"inode":{"change":4,"pos":80166}},"ins_contents":[{"Add":" // If the child is already known, decrement it."},{"Add":" use std::collections::hash_map::Entry;"},{"Add":" if let Entry::Occupied(mut e) = self.child_rc.entry(off) {"},{"Add":" let rc = *e.get();"},{"Add":" assert!(rc > 1);"},{"Add":" // Here, even if the RC ends up equal to 0 or 1, we"},{"Add":" // still have to keep it in the store to update the"},{"Add":" // parent txn."},{"Add":" *e.get_mut() -= 1;"},{"Add":" Ok(*e.get())"},{"Add":" } else if let Some(ref rc_) = self.parent.borrow().rc {"},{"Add":" let mut curs = btree::cursor::Cursor::new(self, rc_)?;"},{"Add":" curs.set(self, &L64(off.to_le()), None)?;"},{"Add":" if let Some((rc, _)) = curs.current(self)? {"},{"Add":" let rc = rc.as_u64();"},{"Add":" if rc & !0xfff == off {"},{"Add":" let rc = (rc & 0xfff) as usize;"},{"Add":" if rc > 2 {"},{"Add":" self.child_rc.insert(off, rc - 1);"},{"Add":" }"},{"Add":" Ok(rc - 1)"},{"Add":" } else {"},{"Add":" Ok(0)"},{"Add":" }"},{"Add":" } else {"},{"Add":" Ok(0)"},{"Add":" }"},{"Add":" } else {"},{"Add":" Ok(0)"},{"Add":" }"},{"Add":" }"},{"Add":"}"}],"del_contents":[{"Del":" debug!(\"decr_rc 0x{:x} {:?}\", off, self.rc);\n"}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":945,"atom":{"NewVertex":{"up_context":[{"change":4,"pos":20116}],"down_context":[{"change":4,"pos":20116}],"flag":"BLOCK","start":16483,"end":16754,"inode":{"change":4,"pos":80166}}},"contents":[{"Add":"impl> MutTxn {"},{"Add":" /// Decrement the reference count of page `off`, freeing that page"},{"Add":" /// if the RC reaches 0 after decrementing it."},{"Add":" fn decr_rc_(&mut self, off: u64) -> Result {"},{"Add":" debug!(\"decr_rc 0x{:x} {:?}\", off, self.rc);"}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":969,"atom":{"NewVertex":{"up_context":[{"change":4,"pos":39178}],"down_context":[{"change":4,"pos":20474}],"flag":"BLOCK","start":16755,"end":16756,"inode":{"change":4,"pos":80166}}},"contents":[{"Add":""}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":996,"atom":{"NewVertex":{"up_context":[{"change":4,"pos":170}],"down_context":[{"change":4,"pos":170}],"flag":"BLOCK","start":16757,"end":16849,"inode":{"change":4,"pos":80166}}},"contents":[{"Add":" if let Some(ref mut p) = self.child_page {"},{"Add":" return p.as_mut();"},{"Add":" }"}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":1002,"ins":{"up_context":[{"change":4,"pos":323}],"down_context":[{"change":4,"pos":362}],"flag":"BLOCK","start":16850,"end":17259,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":323},"to":{"change":4,"start":323,"end":362},"introduced_by":4}],"inode":{"change":4,"pos":80166}},"ins_contents":[{"Add":" let r = &mut *(ptr as *mut [u8; 4064]);"},{"Add":" /*"},{"Add":" if self.parent.is_some() {"},{"Add":" let mut b = Box::new([0; 4064]);"},{"Add":" std::ptr::copy_nonoverlapping(r as *mut u8, b.as_mut_ptr() as *mut u8, 4064);"},{"Add":" self.child_page = Some(b);"},{"Add":" self.child_page.as_mut().unwrap()"},{"Add":" } else {"},{"Add":" r"},{"Add":" }"},{"Add":" */"},{"Add":" r"}],"del_contents":[{"Del":" &mut *(ptr as *mut [u8; 4064])\n"}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":1018,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":106595}],"down_context":[{"change":4,"pos":468}],"flag":"BLOCK","start":17260,"end":17339,"inode":{"change":4,"pos":80166}}},"contents":[{"Add":" if let Some(ref p) = self.child_page {"},{"Add":" return p;"},{"Add":" }"}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":1028,"ins":{"up_context":[{"change":4,"pos":90733}],"down_context":[{"change":4,"pos":20953}],"flag":"BLOCK","start":17340,"end":17402,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":90733},"to":{"change":4,"start":1187,"end":1255},"introduced_by":4}],"inode":{"change":4,"pos":80166}},"ins_contents":[{"Add":"impl> sanakirja_core::LoadPage for MutTxn {"}],"del_contents":[{"Del":"impl, A> sanakirja_core::LoadPage for MutTxn {\n"}]}},{"Edit":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":1036,"atom":{"NewVertex":{"up_context":[{"change":4,"pos":91102}],"down_context":[{"change":4,"pos":91102}],"flag":"BLOCK","start":17403,"end":17501,"inode":{"change":4,"pos":80166}}},"contents":[{"Add":" if let Some(rc) = self.child_rc.get(&page) {"},{"Add":" return Ok(*rc as u64);"},{"Add":" }"}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":1054,"ins":{"up_context":[{"change":4,"pos":4392}],"down_context":[{"change":4,"pos":120}],"flag":"BLOCK","start":17502,"end":18428,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":4392},"to":{"change":4,"start":68,"end":120},"introduced_by":4}],"inode":{"change":4,"pos":80166}},"ins_contents":[{"Add":"impl, T: Borrow>> sanakirja_core::LoadPage for SubTxn {"},{"Add":" type Error = Error;"},{"Add":" unsafe fn load_page(&self, off: u64) -> Result {"},{"Add":" let data = self.parent.borrow().env.borrow().find_offset(off)?;"},{"Add":" Ok(CowPage { data, offset: off })"},{"Add":" }"},{"Add":""},{"Add":" fn rc(&self, page: u64) -> Result {"},{"Add":" if let Some(rc) = self.child_rc.get(&page) {"},{"Add":" return Ok(*rc as u64);"},{"Add":" }"},{"Add":" if let Some(ref rc) = self.parent.borrow().rc {"},{"Add":" if let Some((rc, _)) = btree::get(self, rc, &L64(page.to_le()), None)? {"},{"Add":" let rc = rc.as_u64();"},{"Add":" if rc & !0xfff == page {"},{"Add":" let r = rc & 0xfff;"},{"Add":" if r >= 2 {"},{"Add":" return Ok(r);"},{"Add":" }"},{"Add":" }"},{"Add":" }"},{"Add":" }"},{"Add":" Ok(0)"},{"Add":" }"},{"Add":"}"},{"Add":""},{"Add":"impl> RootPage for MutTxn {"}],"del_contents":[{"Del":"impl, T> RootPage for MutTxn {\n"}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":1089,"ins":{"up_context":[{"change":4,"pos":367}],"down_context":[{"change":4,"pos":21017}],"flag":"BLOCK","start":18429,"end":18462,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"","flag":"DELETED","from":{"change":4,"pos":367},"to":{"change":4,"start":20978,"end":21017},"introduced_by":4},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":4392},"to":{"change":4,"start":20978,"end":21017},"introduced_by":4}],"inode":{"change":4,"pos":80166}},"ins_contents":[{"Add":"impl> MutTxn {"}],"del_contents":[{"Del":"impl, T> MutTxn {\n"}]}},{"Replacement":{"inode":{"change":4,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":1121,"ins":{"up_context":[{"change":4,"pos":21349}],"down_context":[{"change":4,"pos":21399}],"flag":"BLOCK","start":18463,"end":19365,"inode":{"change":4,"pos":80166}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":21349},"to":{"change":4,"start":21349,"end":21399},"introduced_by":4}],"inode":{"change":4,"pos":80166}},"ins_contents":[{"Add":"impl> RootDb for MutTxn {"},{"Add":" // Just call method `root` and convert the result to a `Db`."},{"Add":" fn root_db>("},{"Add":" &self,"},{"Add":" n: usize,"},{"Add":" ) -> Option> {"},{"Add":" if let Some(db) = self.root(n) {"},{"Add":" Some(unsafe { btree::Db_::from_page(db) })"},{"Add":" } else {"},{"Add":" None"},{"Add":" }"},{"Add":" }"},{"Add":"}"},{"Add":""},{"Add":"impl, T> SubTxn {"},{"Add":" /// Low-level method to get the root page number `n`, if that page"},{"Add":" /// isn't a B tree (use the [`RootDb`] trait else)."},{"Add":" pub fn root(&self, n: usize) -> Option {"},{"Add":" if let Some(db) = self.roots.get(n) {"},{"Add":" if *db == 0 {"},{"Add":" None"},{"Add":" } else {"},{"Add":" Some(*db)"},{"Add":" }"},{"Add":" } else {"},{"Add":" unimplemented!()"},{"Add":" }"},{"Add":" }"},{"Add":"}"},{"Add":""},{"Add":"impl, T> RootDb for SubTxn {"}],"del_contents":[{"Del":"impl, T> RootDb for MutTxn {\n"}]}},{"Replacement":{"inode":{"change":58,"pos":11},"path":"sanakirja/src/debug.rs","line":210,"ins":{"up_context":[{"change":4,"pos":2133}],"down_context":[{"change":4,"pos":2175}],"flag":"BLOCK","start":19366,"end":19404,"inode":{"change":58,"pos":11}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":2133},"to":{"change":4,"start":2133,"end":2175},"introduced_by":4}],"inode":{"change":58,"pos":11}},"ins_contents":[{"Add":" txn: &crate::MutTxn<&crate::Env>,"}],"del_contents":[{"Del":" txn: &crate::MutTxn<&crate::Env, ()>,\n"}]}},{"Replacement":{"inode":{"change":58,"pos":11},"path":"sanakirja/src/debug.rs","line":314,"ins":{"up_context":[{"change":4,"pos":6115}],"down_context":[{"change":4,"pos":6211}],"flag":"BLOCK","start":19405,"end":19495,"inode":{"change":58,"pos":11}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":6115},"to":{"change":4,"start":6115,"end":6211},"introduced_by":4}],"inode":{"change":58,"pos":11}},"ins_contents":[{"Add":"pub fn add_free_refs_mut>("},{"Add":" txn: &crate::MutTxn,"}],"del_contents":[{"Del":"pub fn add_free_refs_mut, T>(\n txn: &crate::MutTxn,\n"}]}},{"Replacement":{"inode":{"change":58,"pos":11},"path":"sanakirja/src/debug.rs","line":330,"ins":{"up_context":[{"change":4,"pos":6263}],"down_context":[{"change":4,"pos":12735}],"flag":"BLOCK","start":19496,"end":19579,"inode":{"change":58,"pos":11}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":4,"pos":6263},"to":{"change":4,"start":12646,"end":12735},"introduced_by":4}],"inode":{"change":58,"pos":11}},"ins_contents":[{"Add":"pub fn check_refs>("},{"Add":" txn: &crate::MutTxn,"}],"del_contents":[{"Del":"pub fn check_refs, T>(\n txn: &crate::MutTxn,\n"}]}}],"owner":"pijul","repo":"sanakirja","token":"IWEuObJW4IeRdomtsxtvwhGjbDSg0S0f/1dTJsvjQ2c=","login":null}

…

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