{"header":{"message":"New file locks, with multiple sets of free pages","description":null,"timestamp":"2021-02-01T18:43:45.274500071Z","authors":[{"full_name":"Pierre-Étienne Meunier","name":"pmeunier"}]},"hash":"YXKP4AIWDBIWBBUDWF66YIPG5ECMHNKEV3PX6KYXOVXY3EWG3WGQC","authors":[],"deps":{"hashes":[["YXKP4AIWDBIWBBUDWF66YIPG5ECMHNKEV3PX6KYXOVXY3EWG3WGQC","New file locks, with multiple sets of free pages"],["AA",null],["WS4ZQM4RMIHZ6XZKSDQJGHN5SSSWFL4H236USOPUA33S6RC53RFAC","Debugging, tests, etc."],["OP6SVMOD2GTQ7VNJ4E5KYFG4MIYA7HBMXJTADALMZH4PY7OQRMZQC","Resetting history"],["EAAYH6BQWDK52EC5RG3BEZQU3FJPN5RRRN4U5KDKDVPKXBVJMNDAC","Debugging put"],["FMN7X4J24EYPOJNBUWM4NKGWSJTRV2DHCIBMPV2AXLZVVAMNOBKQC","Micro-improvements, now noticeably faster than std::collections::BTreeMap"],["ONES3V466GLO5CXKRF5ENK7VFOQPWM3YXLVRGWB56V5SH3W7XNBQC","reference counting works for put"],["PXF3R6SVXJXN2NMLMWNY5OFV5QYVE2VZTLGIZDZVK5ZVLFTVSSWQC","Improving test coverage for 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n].lock_exclusive();\n"}]}},{"Edit":{"inode":{"change":3,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":87,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":82513}],"down_context":[{"change":3,"pos":82513}],"flag":"BLOCK","start":579,"end":660,"inode":{"change":3,"pos":80166}}},"contents":[{"Add":" // Root of the last MutTxn."},{"Add":" let v0 = *v + n - 1;"}]}},{"Replacement":{"inode":{"change":3,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":90,"ins":{"up_context":[{"change":3,"pos":82586}],"down_context":[{"change":3,"pos":82745}],"flag":"BLOCK","start":661,"end":808,"inode":{"change":3,"pos":80166}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":82586},"to":{"change":3,"start":82586,"end":82745},"introduced_by":3}],"inode":{"change":3,"pos":80166}},"ins_contents":[{"Add":" let page_ptr = maps.offset((v0 * PAGE_SIZE) as isize);"},{"Add":" let next_page_ptr = maps.offset((*v * PAGE_SIZE) as isize);"}],"del_contents":[{"Del":" let page_ptr = maps.offset((*v * PAGE_SIZE) as isize);\n let next_page_ptr = maps.offset((((*v + 1) % n) * PAGE_SIZE) as isize);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":131,"ins":{"up_context":[{"change":3,"pos":84060}],"down_context":[{"change":3,"pos":84119}],"flag":"BLOCK","start":809,"end":857,"inode":{"change":3,"pos":80166}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":84060},"to":{"change":3,"start":84060,"end":84119},"introduced_by":3}],"inode":{"change":3,"pos":80166}},"ins_contents":[{"Add":"impl> Commit for MutTxn {"}],"del_contents":[{"Del":"impl>> Commit for MutTxn {\n"}]}},{"Edit":{"inode":{"change":3,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":164,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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\"mmap\"))]"},{"Add":"use std::path::Path;"},{"Add":"#[cfg(feature = \"mmap\")]"},{"Add":"use std::path::{Path, PathBuf};"},{"Add":"#[cfg(feature = \"mmap\")]"},{"Add":"use std::fs::OpenOptions;"},{"Add":"use std::sync::atomic::{AtomicUsize, Ordering};"}]}},{"Edit":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":46,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":92395},"to":{"change":3,"start":92395,"end":92827},"introduced_by":3}],"inode":{"change":3,"pos":91606}}},"contents":[{"Del":" }\n}\n\n/// Represents an exclusive lock taken on the environment.\npub struct Exclusive(std::fs::File);\n\n#[cfg(feature = \"mmap\")]\nimpl Drop for Exclusive {\n fn drop(&mut self) {\n self.0.unlock().unwrap_or(());\n }\n}\n\n/// Represents a shared lock taken on the environment.\npub struct Shared(std::fs::File);\n\n#[cfg(feature = \"mmap\")]\nimpl Drop for Shared {\n fn drop(&mut self) {\n self.0.unlock().unwrap_or(());\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":60,"ins":{"up_context":[{"change":3,"pos":93379}],"down_context":[{"change":3,"pos":93399}],"flag":"BLOCK","start":1534,"end":1551,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":93379},"to":{"change":3,"start":93379,"end":93399},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":"pub struct Env {"}],"del_contents":[{"Del":"pub struct Env {\n"}]}},{"Edit":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":63,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":93455},"to":{"change":3,"start":93455,"end":93659},"introduced_by":3}],"inode":{"change":3,"pos":91606}}},"contents":[{"Del":" /// It is undefined behavior to have a file mmapped for than once.\n #[cfg(feature = \"mmap\")]\n lock_file: Option,\n #[cfg(not(feature = \"mmap\"))]\n lock_file: std::marker::PhantomData,\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":67,"ins":{"up_context":[{"change":3,"pos":93735}],"down_context":[{"change":3,"pos":93775}],"flag":"BLOCK","start":1552,"end":1617,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":93735},"to":{"change":3,"start":93735,"end":93775},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" roots: Vec,"},{"Add":" // Root number of the next MutTxn."}],"del_contents":[{"Del":" roots: Vec,\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":72,"ins":{"up_context":[{"change":3,"pos":93802}],"down_context":[{"change":3,"pos":93870}],"flag":"BLOCK","start":1618,"end":1890,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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n_roots = 2;\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":164,"ins":{"up_context":[{"change":3,"pos":96487}],"down_context":[{"change":3,"pos":96570}],"flag":"BLOCK","start":2304,"end":2384,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":96487},"to":{"change":3,"start":96487,"end":96570},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" *(map.add(i * PAGE_SIZE) as *mut GlobalHeader) = GlobalHeader {"}],"del_contents":[{"Del":" *(map.offset(i * PAGE_SIZE) as *mut GlobalHeader) = GlobalHeader {\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":167,"ins":{"up_context":[{"change":3,"pos":96645}],"down_context":[{"change":3,"pos":96674}],"flag":"BLOCK","start":2385,"end":2429,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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PAGE_SIZE,\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":174,"ins":{"up_context":[{"change":3,"pos":96846}],"down_context":[{"change":3,"pos":96911}],"flag":"BLOCK","start":2459,"end":2525,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":96846},"to":{"change":3,"start":96846,"end":96911},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" GlobalHeader::from_le(&*(map as *const GlobalHeader))"}],"del_contents":[{"Del":" GlobalHeader::from_le(*(map as *const GlobalHeader))\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":176,"ins":{"up_context":[{"change":3,"pos":96928}],"down_context":[{"change":3,"pos":96993}],"flag":"BLOCK","start":2526,"end":2592,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":96928},"to":{"change":3,"start":96928,"end":96993},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" GlobalHeader::from_le(&*(map as *const GlobalHeader))"}],"del_contents":[{"Del":" GlobalHeader::from_le(*(map as *const GlobalHeader))\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":178,"ins":{"up_context":[{"change":3,"pos":97004}],"down_context":[{"change":3,"pos":97157}],"flag":"BLOCK","start":2593,"end":2909,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":97004},"to":{"change":3,"start":97004,"end":97157},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" let mut roots = Vec::with_capacity(glob.n_roots as usize);"},{"Add":" for _ in 0..glob.n_roots {"},{"Add":" roots.push(RootLock {"},{"Add":" rw: ::INIT,"},{"Add":" n_txn: AtomicUsize::new(0),"},{"Add":" lock_file: None,"},{"Add":" })"}],"del_contents":[{"Del":" let mut versions = Vec::with_capacity(glob.n_versions as usize);\n for _ in 0..glob.n_versions {\n versions.push(Mutex::new(()))\n"}]}},{"Edit":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":194,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":97367},"to":{"change":3,"start":97367,"end":97396},"introduced_by":3}],"inode":{"change":3,"pos":91606}}},"contents":[{"Del":" lock_file: None,\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":195,"ins":{"up_context":[{"change":3,"pos":97442}],"down_context":[{"change":3,"pos":97514}],"flag":"BLOCK","start":2910,"end":2979,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":97442},"to":{"change":3,"start":97442,"end":97514},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" roots,"},{"Add":" root: Mutex::new(glob.root as usize),"}],"del_contents":[{"Del":" mutable: parking_lot::RawMutex::INIT,\n versions,\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":202,"ins":{"up_context":[{"change":3,"pos":97582}],"down_context":[{"change":3,"pos":97678}],"flag":"BLOCK","start":2980,"end":3065,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":97582},"to":{"change":3,"start":97582,"end":97678},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" unsafe fn new_nolock_mmap(length: u64, initialise: bool) -> Result {"}],"del_contents":[{"Del":" unsafe fn new_nolock_mmap(length: u64, initialise: bool) -> Result, Error> {\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":222,"ins":{"up_context":[{"change":3,"pos":98453}],"down_context":[{"change":3,"pos":98544}],"flag":"BLOCK","start":3066,"end":3247,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":98453},"to":{"change":3,"start":98453,"end":98544},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" roots.push(RootLock {"},{"Add":" rw: ::INIT,"},{"Add":" n_txn: AtomicUsize::new(0),"},{"Add":" })"}],"del_contents":[{"Del":" roots.push(::INIT)\n"}]}},{"Edit":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":233,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":98710},"to":{"change":3,"start":98710,"end":98759},"introduced_by":3}],"inode":{"change":3,"pos":91606}}},"contents":[{"Del":" lock_file: std::marker::PhantomData,\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":241,"ins":{"up_context":[{"change":3,"pos":98910}],"down_context":[{"change":3,"pos":99664}],"flag":"BLOCK","start":3248,"end":3259,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":98910},"to":{"change":3,"start":98910,"end":99664},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":"impl Env {"}],"del_contents":[{"Del":"impl Env {\n /// Initialize an environment. `length` must be a strictly\n /// positive multiple of 4096. The same file can only be open in\n /// one process or thread at the same time, and this is enforced\n /// by a locked file.\n #[cfg(feature = \"mmap\")]\n pub fn new_shared>(path: P, length: u64) -> Result, Error> {\n let lock_file = OpenOptions::new()\n .read(true)\n .write(true)\n .truncate(false)\n .create(true)\n .open(path.as_ref().join(\"db\").with_extension(\"lock\"))?;\n lock_file.lock_shared()?;\n let mut env = unsafe { Self::new_nolock(path, length)? };\n env.lock_file = Some(Shared(lock_file));\n Ok(env)\n }\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":244,"ins":{"up_context":[{"change":3,"pos":99728}],"down_context":[{"change":3,"pos":99844}],"flag":"BLOCK","start":3260,"end":3554,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":99728},"to":{"change":3,"start":99728,"end":99844},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" /// positive multiple of 4096."},{"Add":" ///"},{"Add":" /// The `n_roots` parameter is the maximum number of mutable"},{"Add":" /// transactions that can commit during a single immutable"},{"Add":" /// transaction, and must be at most 255. If it is 1, mutable"},{"Add":" /// transactions exclude all immutable transactions."}],"del_contents":[{"Del":" /// positive multiple of 4096. Returns an error if the database is\n /// locked by another process or thread.\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":251,"ins":{"up_context":[{"change":3,"pos":99873}],"down_context":[{"change":3,"pos":101798}],"flag":"BLOCK","start":3555,"end":4156,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":99873},"to":{"change":3,"start":99873,"end":101798},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" pub fn new>(path: P, length: u64, n_roots: usize) -> Result {"},{"Add":" assert!(n_roots < 256);"},{"Add":" let path = path.as_ref();"},{"Add":" let mut env = unsafe { Self::new_nolock(path, length, n_roots)? };"},{"Add":" for (n, l) in env.roots.iter_mut().enumerate() {"},{"Add":" l.lock_file = Some("},{"Add":" OpenOptions::new()"},{"Add":" .read(true)"},{"Add":" .write(true)"},{"Add":" .truncate(false)"},{"Add":" .create(true)"},{"Add":" .open(path.join(\"db\").with_extension(&format!(\"lock{}\", n)))?"},{"Add":" );"},{"Add":" }"}],"del_contents":[{"Del":" pub fn try_new_shared>(path: P, length: u64) -> Result, Error> {\n let lock_file = OpenOptions::new()\n .read(true)\n .write(true)\n .truncate(false)\n .create(true)\n .open(path.as_ref().join(\"db\").with_extension(\"lock\"))?;\n lock_file.try_lock_shared()?;\n let mut env = unsafe { Self::new_nolock(path, length)? };\n env.lock_file = Some(Shared(lock_file));\n Ok(env)\n }\n}\n\nimpl Env {\n /// Initialize an environment. `length` must be a strictly\n /// positive multiple of 4096. The same file can only be open in\n /// one process or thread at the same time, and this is enforced\n /// by a locked file.\n #[cfg(feature = \"mmap\")]\n pub fn new>(path: P, length: u64) -> Result, Error> {\n let lock_file = OpenOptions::new()\n .read(true)\n .write(true)\n .truncate(false)\n .create(true)\n .open(path.as_ref().join(\"db\").with_extension(\"lock\"))?;\n lock_file.lock_exclusive()?;\n let mut env = unsafe { Self::new_nolock(path, length)? };\n env.lock_file = Some(Exclusive(lock_file));\n Ok(env)\n }\n\n /// Initialize an environment. `length` must be a strictly\n /// positive multiple of 4096. Returns an error if the database is\n /// locked by another process or thread.\n #[cfg(feature = \"mmap\")]\n pub fn try_new>(path: P, length: u64) -> Result, Error> {\n let lock_file = OpenOptions::new()\n .read(true)\n .write(true)\n .truncate(false)\n .create(true)\n .open(path.as_ref().join(\"db\").with_extension(\"lock\"))?;\n lock_file.try_lock_exclusive()?;\n let mut env = unsafe { Self::new_nolock(path, length)? };\n env.lock_file = Some(Exclusive(lock_file));\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":271,"ins":{"up_context":[{"change":3,"pos":101972}],"down_context":[{"change":3,"pos":102110}],"flag":"BLOCK","start":4157,"end":4297,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":101972},"to":{"change":3,"start":101972,"end":102110},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" pub fn new_anon(length: u64, n_roots: usize) -> Result {"},{"Add":" let length = (std::cmp::max(length, 4096) + 4095) & !4096;"}],"del_contents":[{"Del":" pub fn new_anon(length: u64) -> Result, Error> {\n let length = std::cmp::max(length, 4096).next_power_of_two();\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":274,"ins":{"up_context":[{"change":3,"pos":102174}],"down_context":[{"change":3,"pos":102241}],"flag":"BLOCK","start":4298,"end":4374,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":102174},"to":{"change":3,"start":102174,"end":102241},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" unsafe { Self::new_nolock_mmap(None, length, mmap, true, n_roots) }"}],"del_contents":[{"Del":" unsafe { Self::new_nolock_mmap(None, length, mmap, true) }\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":280,"ins":{"up_context":[{"change":3,"pos":102404}],"down_context":[{"change":3,"pos":102472}],"flag":"BLOCK","start":4375,"end":4432,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":102404},"to":{"change":3,"start":102404,"end":102472},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" pub fn new_anon(length: u64) -> Result {"}],"del_contents":[{"Del":" pub fn new_anon(length: u64) -> Result, Error> {\n"}]}},{"Edit":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":284,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":102603},"to":{"change":3,"start":102603,"end":102605},"introduced_by":3}],"inode":{"change":3,"pos":91606}}},"contents":[{"Del":"}\n"}]}},{"Edit":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":285,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":102606},"to":{"change":3,"start":102606,"end":102623},"introduced_by":3}],"inode":{"change":3,"pos":91606}}},"contents":[{"Del":"impl Env {\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":354,"ins":{"up_context":[{"change":3,"pos":105034}],"down_context":[{"change":3,"pos":105090}],"flag":"BLOCK","start":4433,"end":4480,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":105034},"to":{"change":3,"start":105034,"end":105090},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" for m in self.mmaps.lock().drain(..) {"}],"del_contents":[{"Del":" for m in self.mmaps.lock().unwrap().drain(..) {\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":357,"ins":{"up_context":[{"change":3,"pos":105126}],"down_context":[{"change":3,"pos":105211}],"flag":"BLOCK","start":4481,"end":4623,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":105126},"to":{"change":3,"start":105126,"end":105211},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" for l in self.roots.drain(..) {"},{"Add":" if let Some(ref f) = l.lock_file {"},{"Add":" f.unlock().unwrap_or(())"},{"Add":" }"}],"del_contents":[{"Del":" if let Some(lock_file) = self.lock_file.take() {\n drop(lock_file)\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":377,"ins":{"up_context":[{"change":3,"pos":105584}],"down_context":[{"change":3,"pos":105601}],"flag":"BLOCK","start":4624,"end":4635,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":105584},"to":{"change":3,"start":105584,"end":105601},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":"impl Env {"}],"del_contents":[{"Del":"impl Env {\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":379,"ins":{"up_context":[{"change":3,"pos":105640}],"down_context":[{"change":3,"pos":105716}],"flag":"BLOCK","start":4636,"end":4709,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":105640},"to":{"change":3,"start":105640,"end":105716},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" pub fn txn_begin>(env: E) -> Result, Error> {"}],"del_contents":[{"Del":" pub fn txn_begin>(env: E) -> Result, Error> {\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":384,"ins":{"up_context":[{"change":3,"pos":105889}],"down_context":[{"change":3,"pos":105933}],"flag":"BLOCK","start":4710,"end":5013,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":105889},"to":{"change":3,"start":105889,"end":105933},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":""},{"Add":" let old_n_txn = env_.roots[root].n_txn.fetch_add(1, Ordering::SeqCst);"},{"Add":" if old_n_txn == 0 {"},{"Add":" env_.roots[root].rw.lock_shared();"},{"Add":" if let Some(ref f) = env_.roots[root].lock_file {"},{"Add":" f.lock_shared()?;"},{"Add":" }"},{"Add":" }"}],"del_contents":[{"Del":" env_.roots[root].lock_shared();\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":394,"ins":{"up_context":[{"change":3,"pos":105961}],"down_context":[{"change":3,"pos":106068}],"flag":"BLOCK","start":5014,"end":5044,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":105961},"to":{"change":3,"start":105961,"end":106068},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" Ok(Txn { env, root })"}],"del_contents":[{"Del":" Ok(Txn {\n env,\n lock: std::marker::PhantomData,\n root,\n })\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":398,"ins":{"up_context":[{"change":3,"pos":106077}],"down_context":[{"change":3,"pos":106125}],"flag":"BLOCK","start":5045,"end":5084,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":106077},"to":{"change":3,"start":106077,"end":106125},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":"impl> Drop for Txn {"}],"del_contents":[{"Del":"impl>> Drop for Txn {\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":401,"ins":{"up_context":[{"change":3,"pos":106187}],"down_context":[{"change":3,"pos":106243}],"flag":"BLOCK","start":5085,"end":5390,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":106187},"to":{"change":3,"start":106187,"end":106243},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":" let old_n_txn = env.roots[self.root].n_txn.fetch_sub(1, Ordering::SeqCst);"},{"Add":" if old_n_txn == 1 {"},{"Add":" unsafe { env.roots[self.root].rw.unlock_shared() }"},{"Add":" if let Some(ref f) = env.roots[self.root].lock_file {"},{"Add":" f.unlock().unwrap_or(())"},{"Add":" }"},{"Add":" }"}],"del_contents":[{"Del":" unsafe { env.roots[self.root].unlock_shared() }\n"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":411,"ins":{"up_context":[{"change":3,"pos":106252}],"down_context":[{"change":3,"pos":106320}],"flag":"BLOCK","start":5391,"end":5450,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":106252},"to":{"change":3,"start":106252,"end":106320},"introduced_by":3}],"inode":{"change":3,"pos":91606}},"ins_contents":[{"Add":"impl> sanakirja_core::LoadPage for Txn {"}],"del_contents":[{"Del":"impl>> sanakirja_core::LoadPage for Txn {\n"}]}},{"Edit":{"inode":{"change":3,"pos":108411},"path":"sanakirja/Cargo.toml","line":8,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":108614}],"down_context":[{"change":3,"pos":108614}],"flag":"BLOCK","start":5451,"end":5511,"inode":{"change":3,"pos":108411}}},"contents":[{"Add":""},{"Add":"[features]"},{"Add":"default = [ \"mmap\" ]"},{"Add":"mmap = [ \"memmap\", \"fs2\" ]"}]}},{"Edit":{"inode":{"change":3,"pos":108411},"path":"sanakirja/Cargo.toml","line":17,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":2944}],"down_context":[{"change":3,"pos":108728}],"flag":"BLOCK","start":5512,"end":5700,"inode":{"change":3,"pos":108411}}},"contents":[{"Add":"# lmdb-rs = \"*\""},{"Add":"memmap = { version = \"0.7\", optional = true }"},{"Add":"fs2 = { version = \"0.4\", optional = true }"},{"Add":"sanakirja-core = { path = \"../sanakirja-core\", version = \"*\" }"},{"Add":""},{"Add":"[dev-dependencies]"}]}},{"Edit":{"inode":{"change":3,"pos":108411},"path":"sanakirja/Cargo.toml","line":24,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":108745},"to":{"change":3,"start":108745,"end":108821},"introduced_by":3}],"inode":{"change":3,"pos":108411}}},"contents":[{"Del":"lmdb-rs = \"*\"\nsanakirja-core = { path = \"../sanakirja-core\", version = \"*\" }"}]}}],"owner":"pijul","repo":"sanakirja","token":"yJVw9AJjU6oJHgLWfL1nMxIL8H03mJeHtoN64R9IEeE=","login":null}

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