{"header":{"message":"Debugging synchronisation","description":null,"timestamp":"2021-02-04T08:39:00.634089037Z","authors":[{"full_name":"Pierre-Étienne Meunier","name":"pmeunier"}]},"hash":"G4JEQLLX6Q7VVFVAEJZAVQXX33MQ36CSCYSMJ5NQM5VZ76DXKU6QC","authors":[],"deps":{"hashes":[["G4JEQLLX6Q7VVFVAEJZAVQXX33MQ36CSCYSMJ5NQM5VZ76DXKU6QC","Debugging synchronisation"],["AA",null],["AOX2XQISHGWNNAFBYRN44Q6AWG7H5DPBK5YMFHK42HQNZ2TMHEJQC","Actually, with the correct functions, Unsized pages are always slower than Sized pages (especially for writing)"],["WS4ZQM4RMIHZ6XZKSDQJGHN5SSSWFL4H236USOPUA33S6RC53RFAC","Debugging, tests, etc."],["OTWDDJE7TTE73D6BGF4ZN6BH2NFUFLPME2VJ3CPALH463UGWLEIQC","Trait/type cleanup"],["X3QVVQIS7B7L3XYZAWL3OOBUXOJ6RMOKQ45YMLLGAHYPEEKZ45ZAC","More debugging (del seems to work now)"],["H3FVSQIQGFCFKCPXVOSFHP4OSUOBBURJESCZNGQTNDAAD3WQSBEQC","Unsized pages"],["YXKP4AIWDBIWBBUDWF66YIPG5ECMHNKEV3PX6KYXOVXY3EWG3WGQC","New file locks, with multiple sets of free pages"],["OP6SVMOD2GTQ7VNJ4E5KYFG4MIYA7HBMXJTADALMZH4PY7OQRMZQC","Resetting history"],["FMN7X4J24EYPOJNBUWM4NKGWSJTRV2DHCIBMPV2AXLZVVAMNOBKQC","Micro-improvements, now noticeably faster than std::collections::BTreeMap"],["6DMPXOAT5GQ3BQQOMUZN2GMBQPRA4IB7CCPHTQTIFGO3KWWAKF3QC","More debugging"],["6UVFCERMGSGNRWCVC3GWO5HWV6MSWE433DXBJVC7KRPP6LLJLCSQC","Formatting, debugging, etc."],["UAQX27N4PI4LHEW6LSHJETIE5MV7JTEMPLTJFYUBMYVPC43H7VOAC","Tests"],["AFKBHYVE25QMIU2WZATEGWG2EXSBQZ44DVDPACKNS3M4QGBF4ONAC","Comparing the two implementations of leaves (sized/unsized). Sized are faster for writes, slower for reads."],["EAAYH6BQWDK52EC5RG3BEZQU3FJPN5RRRN4U5KDKDVPKXBVJMNDAC","Debugging put"],["YWFYZNLZ5JHLIFVBRKZK4TSWVPROUPRG77ZB5M7UHT2OKPL4ZSRQC","Cleanup + inter-process concurrency"]],"deps":["AOX2XQISHGWNNAFBYRN44Q6AWG7H5DPBK5YMFHK42HQNZ2TMHEJQC"],"known":["OP6SVMOD2GTQ7VNJ4E5KYFG4MIYA7HBMXJTADALMZH4PY7OQRMZQC","FMN7X4J24EYPOJNBUWM4NKGWSJTRV2DHCIBMPV2AXLZVVAMNOBKQC","WS4ZQM4RMIHZ6XZKSDQJGHN5SSSWFL4H236USOPUA33S6RC53RFAC","EAAYH6BQWDK52EC5RG3BEZQU3FJPN5RRRN4U5KDKDVPKXBVJMNDAC","UAQX27N4PI4LHEW6LSHJETIE5MV7JTEMPLTJFYUBMYVPC43H7VOAC","X3QVVQIS7B7L3XYZAWL3OOBUXOJ6RMOKQ45YMLLGAHYPEEKZ45ZAC","YXKP4AIWDBIWBBUDWF66YIPG5ECMHNKEV3PX6KYXOVXY3EWG3WGQC","YWFYZNLZ5JHLIFVBRKZK4TSWVPROUPRG77ZB5M7UHT2OKPL4ZSRQC","6DMPXOAT5GQ3BQQOMUZN2GMBQPRA4IB7CCPHTQTIFGO3KWWAKF3QC","OTWDDJE7TTE73D6BGF4ZN6BH2NFUFLPME2VJ3CPALH463UGWLEIQC","H3FVSQIQGFCFKCPXVOSFHP4OSUOBBURJESCZNGQTNDAAD3WQSBEQC","6UVFCERMGSGNRWCVC3GWO5HWV6MSWE433DXBJVC7KRPP6LLJLCSQC","AFKBHYVE25QMIU2WZATEGWG2EXSBQZ44DVDPACKNS3M4QGBF4ONAC"]},"hunks":[{"Edit":{"inode":{"change":3,"pos":91},"path":"sanakirja-core/src/lib.rs","line":139,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":495}],"down_context":[{"change":3,"pos":495}],"flag":"BLOCK","start":0,"end":126,"inode":{"change":3,"pos":91}}},"contents":[{"Add":" }"},{"Add":" pub fn null() -> Self {"},{"Add":" CowPage {"},{"Add":" data: core::ptr::null_mut(),"},{"Add":" offset: 0,"},{"Add":" }"}]}},{"Edit":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":160,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":31744},"to":{"change":2,"start":1148,"end":1393},"introduced_by":2}],"inode":{"change":3,"pos":27023}}},"contents":[{"Del":" }\n {\n let hdr = header(left.0.as_page());\n assert_eq!(hdr.n() as u64 * 16, hdr.left_page() & 0xfff);\n }\n {\n let hdr = header(right.0.as_page());\n assert_eq!(hdr.n() as u64 * 16, hdr.left_page() & 0xfff);\n"}]}},{"Edit":{"inode":{"change":3,"pos":27023},"path":"sanakirja-core/src/btree/page_unsized/put.rs","line":161,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":31750},"to":{"change":2,"start":1394,"end":1395},"introduced_by":2},{"previous":"","flag":"DELETED","from":{"change":2,"pos":1395},"to":{"change":3,"start":31750,"end":31783},"introduced_by":2},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":31750},"to":{"change":3,"start":31750,"end":31783},"introduced_by":3}],"inode":{"change":3,"pos":27023}}},"contents":[{"Del":"\n"},{"Del":" assert!(!split.0.is_null());\n"}]}},{"Edit":{"inode":{"change":3,"pos":33822},"path":"sanakirja-core/src/btree/page_unsized/alloc.rs","line":81,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":3525},"to":{"change":2,"start":1691,"end":1795},"introduced_by":2}],"inode":{"change":3,"pos":33822}}},"contents":[{"Del":" assert_eq!(hdr.n() as u64 * 16, hdr.left_page() & 0xfff); // Just for the test with (u64, u64).\n"}]}},{"Edit":{"inode":{"change":3,"pos":45735},"path":"sanakirja-core/src/btree/mod.rs","line":286,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":52188}],"down_context":[{"change":3,"pos":15084}],"flag":"BLOCK","start":127,"end":440,"inode":{"change":3,"pos":45735}}},"contents":[{"Add":"impl> Db_ {"},{"Add":" pub fn from_page(db: CowPage) -> Self {"},{"Add":" Db_ {"},{"Add":" db,"},{"Add":" k: core::marker::PhantomData,"},{"Add":" v: core::marker::PhantomData,"},{"Add":" p: core::marker::PhantomData,"},{"Add":" }"},{"Add":" }"},{"Add":"}"},{"Add":""}]}},{"Edit":{"inode":{"change":3,"pos":11},"path":"sanakirja/src/tests.rs","line":142,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":9943}],"down_context":[{"change":3,"pos":9943}],"flag":"BLOCK","start":441,"end":479,"inode":{"change":3,"pos":11}}},"contents":[{"Add":""},{"Add":"type B = btree::page::Page;"}]}},{"Edit":{"inode":{"change":3,"pos":11},"path":"sanakirja/src/tests.rs","line":147,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":5701},"to":{"change":3,"start":5701,"end":5742},"introduced_by":3}],"inode":{"change":3,"pos":11}}},"contents":[{"Del":" type B = btree::page::Page;\n"}]}},{"Edit":{"inode":{"change":3,"pos":11},"path":"sanakirja/src/tests.rs","line":226,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":7458}],"down_context":[{"change":3,"pos":7458}],"flag":"BLOCK","start":480,"end":615,"inode":{"change":3,"pos":11}}},"contents":[{"Add":" check_free(&mut txn, &refs);"},{"Add":" debug!(\"{:?}\", refs);"},{"Add":"}"},{"Add":""},{"Add":"fn check_free(txn: &mut MutTxn<&Env, ()>, refs: &BTreeMap) {"}]}},{"Replacement":{"inode":{"change":3,"pos":11},"path":"sanakirja/src/tests.rs","line":240,"ins":{"up_context":[{"change":3,"pos":7726}],"down_context":[{"change":3,"pos":7790}],"flag":"BLOCK","start":616,"end":675,"inode":{"change":3,"pos":11}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":7726},"to":{"change":3,"start":7726,"end":7790},"introduced_by":3}],"inode":{"change":3,"pos":11}},"ins_contents":[{"Add":" while let Some((k, _)) = curs.next(txn).unwrap() {"}],"del_contents":[{"Del":" while let Some((k, _)) = curs.next(&mut txn).unwrap() {\n"}]}},{"Edit":{"inode":{"change":3,"pos":11},"path":"sanakirja/src/tests.rs","line":242,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":7827}],"down_context":[{"change":3,"pos":7827}],"flag":"BLOCK","start":676,"end":719,"inode":{"change":3,"pos":11}}},"contents":[{"Add":" assert!(refs.get(k).is_none())"}]}},{"Replacement":{"inode":{"change":3,"pos":11},"path":"sanakirja/src/tests.rs","line":245,"ins":{"up_context":[{"change":3,"pos":7843}],"down_context":[{"change":3,"pos":7869}],"flag":"BLOCK","start":720,"end":791,"inode":{"change":3,"pos":11}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":7843},"to":{"change":3,"start":7843,"end":7869},"introduced_by":3}],"inode":{"change":3,"pos":11}},"ins_contents":[{"Add":" for (r, _) in refs.iter() {"},{"Add":" assert!(*r < txn.length)"},{"Add":" }"}],"del_contents":[{"Del":" debug!(\"{:?}\", refs);\n"}]}},{"Edit":{"inode":{"change":3,"pos":11},"path":"sanakirja/src/tests.rs","line":285,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":1751},"to":{"change":3,"start":1751,"end":1793},"introduced_by":3}],"inode":{"change":3,"pos":11}}},"contents":[{"Del":" env_logger::try_init().unwrap_or(());\n"}]}},{"Replacement":{"inode":{"change":3,"pos":11},"path":"sanakirja/src/tests.rs","line":287,"ins":{"up_context":[{"change":3,"pos":1912}],"down_context":[{"change":3,"pos":2688}],"flag":"BLOCK","start":792,"end":2593,"inode":{"change":3,"pos":11}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":1912},"to":{"change":3,"start":1912,"end":2076},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":2076},"to":{"change":3,"start":2467,"end":2539},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":2539},"to":{"change":3,"start":2152,"end":2283},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":2152},"to":{"change":3,"start":2152,"end":2283},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":2283},"to":{"change":3,"start":2540,"end":2589},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":2589},"to":{"change":3,"start":2336,"end":2381},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":2336},"to":{"change":3,"start":2336,"end":2381},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":2381},"to":{"change":3,"start":27376,"end":27436},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":27436},"to":{"change":3,"start":2444,"end":2536},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":2444},"to":{"change":3,"start":2444,"end":2536},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":2536},"to":{"change":3,"start":2590,"end":2639},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":2639},"to":{"change":3,"start":2589,"end":2688},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":2589},"to":{"change":3,"start":2589,"end":2688},"introduced_by":3}],"inode":{"change":3,"pos":11}},"ins_contents":[{"Add":""},{"Add":" env_logger::try_init().unwrap_or(());"},{"Add":" let mut child = unsafe { libc::fork() };"},{"Add":" if child == 0 {"},{"Add":" // child"},{"Add":""},{"Add":" let env = Env::new(\"/tmp/sanakirja0\", 4096 * 20, 2).unwrap();"},{"Add":""},{"Add":" // Mutable txn"},{"Add":" let mut txn = Env::mut_txn_begin(&env).unwrap();"},{"Add":" info!(\"started child mutable txn {:?}\", txn.env.root.lock());"},{"Add":" let db = create_db::, u64, ()>(&mut txn).unwrap();"},{"Add":" debug!(\"db = {:?}\", db.db.offset);"},{"Add":" txn.set_root(0, db.db.offset);"},{"Add":" std::thread::sleep(std::time::Duration::from_secs(2));"},{"Add":" txn.commit().unwrap();"},{"Add":" info!(\"committed\");"},{"Add":" let t = std::time::SystemTime::now();"},{"Add":" let mut txn = Env::mut_txn_begin(&env).unwrap();"},{"Add":" // Since the parent has an immutable transaction started, we"},{"Add":" // need to wait for at least some time (1s - 100ms of"},{"Add":" // synchronisation margin)."},{"Add":" assert!(t.elapsed().unwrap() >= std::time::Duration::from_millis(900));"},{"Add":" info!(\"started child mutable txn {:?}\", txn.env.root.lock());"},{"Add":" let db = create_db::, u64, ()>(&mut txn).unwrap();"},{"Add":" debug!(\"db = {:?}\", db.db.offset);"},{"Add":" txn.set_root(0, db.db.offset);"},{"Add":" std::thread::sleep(std::time::Duration::from_secs(1));"},{"Add":" txn.commit().unwrap();"},{"Add":""},{"Add":" unsafe { libc::exit(0) }"},{"Add":" } else {"},{"Add":" // parent"},{"Add":" std::thread::sleep(std::time::Duration::from_secs(1));"},{"Add":""},{"Add":" let env = Env::new(\"/tmp/sanakirja0\", 4096 * 20, 2).unwrap();"},{"Add":""},{"Add":" // Immutable"},{"Add":" info!(\"starting parent txn {:?}\", env.root);"},{"Add":" let txn = Env::txn_begin(&env).unwrap();"},{"Add":" info!(\"started parent txn\");"},{"Add":" std::thread::sleep(std::time::Duration::from_secs(3));"},{"Add":" std::mem::drop(txn);"},{"Add":""},{"Add":" unsafe { libc::wait(&mut child) };"},{"Add":" }"}],"del_contents":[{"Del":" let env = Env::new(\"/tmp/sanakirja0\", 4096 * 20, 2).unwrap();\n let mut txn = Env::mut_txn_begin(&env).unwrap();\n debug!(\"txn.root = {:?}\", txn.env.root);\n"},{"Del":" let db = create_db::, u64, ()>(&mut txn).unwrap();\n"},{"Del":" debug!(\"db = {:?}\", db.db.offset);\n txn.set_root(0, db.db.offset);\n txn.commit().unwrap();\n debug!(\"1. commit done\");\n"},{"Del":" let txn = Env::mut_txn_begin(&env).unwrap();\n"},{"Del":" debug!(\"txn.root = {:?}\", txn.env.root);\n"},{"Del":" let db: Db = txn.root_db(0).unwrap().unwrap();\n"},{"Del":" debug!(\"txn.root = {:?}\", db);\n txn.commit().unwrap();\n debug!(\"2. commit done\");\n"},{"Del":" let txn = Env::mut_txn_begin(&env).unwrap();\n"},{"Del":" debug!(\"txn.root = {:?}\", txn.env.root);\n txn.commit().unwrap();\n debug!(\"commit done\");\n"}]}},{"Edit":{"inode":{"change":3,"pos":11},"path":"sanakirja/src/tests.rs","line":388,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":12573}],"down_context":[{"change":2,"pos":2354}],"flag":"BLOCK","start":2594,"end":2657,"inode":{"change":3,"pos":11}}},"contents":[{"Add":" debug!(\"{:?}\", txn.free);"},{"Add":" check_free(&mut txn, &refs);"}]}},{"Replacement":{"inode":{"change":3,"pos":11},"path":"sanakirja/src/tests.rs","line":391,"ins":{"up_context":[{"change":2,"pos":2378}],"down_context":[{"change":3,"pos":412}],"flag":"BLOCK","start":2658,"end":2732,"inode":{"change":3,"pos":11}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":2,"pos":2378},"to":{"change":2,"start":2378,"end":2433},"introduced_by":2}],"inode":{"change":3,"pos":11}},"ins_contents":[{"Add":" let len = txn.length >> 12;"},{"Add":" println!(\"sized length = {:?}\", len);"}],"del_contents":[{"Del":" println!(\"sized length = {:?}\", txn.length >> 12);\n"}]}},{"Replacement":{"inode":{"change":3,"pos":11},"path":"sanakirja/src/tests.rs","line":407,"ins":{"up_context":[{"change":3,"pos":760}],"down_context":[{"change":3,"pos":12890}],"flag":"BLOCK","start":2733,"end":3038,"inode":{"change":3,"pos":11}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":760},"to":{"change":2,"start":2493,"end":2550},"introduced_by":2}],"inode":{"change":3,"pos":11}},"ins_contents":[{"Add":" println!(\"unsized length = {:?}\", (txn.length >> 12) - len);"},{"Add":" add_refs(&txn, &db, &mut refs).unwrap();"},{"Add":" for (p, r) in refs.iter() {"},{"Add":" if *r >= 2 {"},{"Add":" error!(\"{:?} referenced twice\", p);"},{"Add":" err += 1"},{"Add":" }"},{"Add":" }"},{"Add":" assert_eq!(err, 0);"},{"Add":" check_free(&mut txn, &refs);"}],"del_contents":[{"Del":" println!(\"unsized length = {:?}\", txn.length >> 12);\n"}]}},{"Edit":{"inode":{"change":3,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":38,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":81081}],"down_context":[{"change":3,"pos":148}],"flag":"BLOCK","start":3039,"end":3091,"inode":{"change":3,"pos":80166}}},"contents":[{"Add":" debug!(\"unlock exclusive {:?}\", *root);"}]}},{"Replacement":{"inode":{"change":3,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":145,"ins":{"up_context":[{"change":3,"pos":84183}],"down_context":[{"change":3,"pos":84575}],"flag":"BLOCK","start":3092,"end":3232,"inode":{"change":3,"pos":80166}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":84183},"to":{"change":3,"start":27474,"end":27536},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":3434},"to":{"change":3,"start":84279,"end":84354},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":27536},"to":{"change":3,"start":84279,"end":84354},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":84279},"to":{"change":3,"start":84279,"end":84354},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":84354},"to":{"change":3,"start":37493,"end":37523},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":37523},"to":{"change":3,"start":84381,"end":84510},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":84381},"to":{"change":3,"start":84381,"end":84510},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":84510},"to":{"change":3,"start":52979,"end":53114},"introduced_by":3},{"previous":"","flag":"DELETED","from":{"change":3,"pos":53114},"to":{"change":3,"start":84560,"end":84575},"introduced_by":3},{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":84560},"to":{"change":3,"start":84560,"end":84575},"introduced_by":3}],"inode":{"change":3,"pos":80166}},"ins_contents":[{"Add":" let mut free_db: btree::Db ="},{"Add":" btree::Db::from_page(std::mem::replace(&mut self.free, CowPage::null()));"}],"del_contents":[{"Del":" let mut free_db: btree::Db = btree::Db {\n"},{"Del":" db: std::mem::replace(\n &mut self.free,\n"},{"Del":" CowPage {\n"},{"Del":" data: std::ptr::null_mut(),\n offset: 0,\n },\n ),\n"},{"Del":" k: std::marker::PhantomData,\n v: std::marker::PhantomData,\n p: std::marker::PhantomData,\n"},{"Del":" };\n"}]}},{"Edit":{"inode":{"change":3,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":164,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":85506}],"down_context":[{"change":3,"pos":85506}],"flag":"BLOCK","start":3233,"end":3269,"inode":{"change":3,"pos":80166}}},"contents":[{"Add":" self.free = free_db.db;"}]}},{"Edit":{"inode":{"change":3,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":178,"atom":{"EdgeMap":{"edges":[{"previous":"BLOCK","flag":"BLOCK | DELETED","from":{"change":3,"pos":85777},"to":{"change":3,"start":85777,"end":85828},"introduced_by":3}],"inode":{"change":3,"pos":80166}}},"contents":[{"Del":" *root = (*root + 1) % env.roots.len();\n"}]}},{"Edit":{"inode":{"change":3,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":183,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":85909}],"down_context":[{"change":3,"pos":907}],"flag":"BLOCK","start":3270,"end":3320,"inode":{"change":3,"pos":80166}}},"contents":[{"Add":" debug!(\"commit: unlock {:?}\", *root);"}]}},{"Edit":{"inode":{"change":3,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":186,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":1021}],"down_context":[{"change":3,"pos":1021}],"flag":"BLOCK","start":3321,"end":3368,"inode":{"change":3,"pos":80166}}},"contents":[{"Add":" debug!(\"commit: unlock file\");"}]}},{"Edit":{"inode":{"change":3,"pos":80166},"path":"sanakirja/src/environment/muttxn.rs","line":190,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":85966}],"down_context":[{"change":3,"pos":85966}],"flag":"BLOCK","start":3369,"end":3420,"inode":{"change":3,"pos":80166}}},"contents":[{"Add":" *root = (*root + 1) % env.roots.len();"}]}},{"Edit":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":375,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":4709}],"down_context":[{"change":3,"pos":105716}],"flag":"BLOCK","start":3421,"end":3441,"inode":{"change":3,"pos":91606}}},"contents":[{"Add":" use log::*;"}]}},{"Edit":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":378,"atom":{"NewVertex":{"up_context":[{"change":3,"pos":105774}],"down_context":[{"change":3,"pos":105774}],"flag":"BLOCK","start":3442,"end":3475,"inode":{"change":3,"pos":91606}}},"contents":[{"Add":" debug!(\"root lock\");"}]}},{"Replacement":{"inode":{"change":3,"pos":91606},"path":"sanakirja/src/environment/mod.rs","line":381,"ins":{"up_context":[{"change":3,"pos":105889}],"down_context":[{"change":3,"pos":4711}],"flag":"BLOCK","start":3476,"end":3564,"inode":{"change":3,"pos":91606}},"del":{"edges":[{"previous":"BLOCK","flag":"BLOCK | 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…

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