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* Fix: Display of secure_delete error messageGert-Jan Timmer2018-05-291-1/+1
* Fix: Condition of queryOnly VariableGert-Jan Timmer2018-05-291-1/+1
* Fix: Connection DSN Keys•••* Conform keys to match PRAGMA * UPD: README * Fix error of _auto_vacuum * Fix error of _case_sensitive_like * Fix error of _locking_mode * Fix error of _secure_deleteGert-Jan Timmer2018-05-291-11/+40
* ADD: PRAGMA writable_schemaGert-Jan Timmer2018-05-291-4/+35
* ADD: PRAGMA synchronousGert-Jan Timmer2018-05-291-1/+40
* Add: PRAGMA secure_delete•••ADD: Connection PRAGMA ADD: Build tag for secure_delete mode: FASTGert-Jan Timmer2018-05-291-0/+34
* ADD: PRAGMA query_onlyGert-Jan Timmer2018-05-291-0/+27
* Add: Documentation for opening as ImmutableGert-Jan Timmer2018-05-291-0/+9
* ADD: PRAGMA locking_modeGert-Jan Timmer2018-05-291-1/+28
* ADD: PRAGMA journal_modeGert-Jan Timmer2018-05-291-0/+25
* Fix: String ToLower for PRAGMA'sGert-Jan Timmer2018-05-291-4/+5
* Update README•••ADD: Comments for SQLite Access Mode ADD: Comments for SQLite Shared-Cache Mode UPD: README * Add Access Mode in Connection String TableGert-Jan Timmer2018-05-291-0/+17
* ADD: Additional Copyright lineGert-Jan Timmer2018-05-291-0/+1
* Update CommentsGert-Jan Timmer2018-05-291-3/+3
* ADD: PRAGMA ignore_check_constraintsGert-Jan Timmer2018-05-291-0/+28
* Update CommentsGert-Jan Timmer2018-05-291-0/+1
* ADD: PRAGMA defer_foreign_keysGert-Jan Timmer2018-05-291-0/+34
* Update Recursive Triggers•••ADD: Multiple KeyGert-Jan Timmer2018-05-291-1/+8
* Fix: pkey•••Ensure pkey is empty for next conditionGert-Jan Timmer2018-05-291-3/+5
* Update Foreign Keys PRAGMA•••ADD: Multiple keyGert-Jan Timmer2018-05-291-4/+9
* Update Busy Timeout PRAGMA•••ADD: multiple keyGert-Jan Timmer2018-05-291-1/+10
* ADD: PRAGMA case_sensitive_like•••ADD: Comments UPD: READMEGert-Jan Timmer2018-05-291-8/+47
* Update Connection Options•••* Rewrite order of options * ADD: PRAGMA auto_vacuum * ADD: Multi Boolean values * UPD: README * FIX: Case-Sensitive values * Reduced code for: - foreign_keys - recursive_triggersGert-Jan Timmer2018-05-291-42/+81
* fmt update•••Fix: Placed all +build tags in the same location Fix: Split CFLAGS, LDFLAGS into seperate lines for readability and lookup Fix: Placed empty line between copyright comments and build tags for readability Fix: Placed OS specfic cgo flags at the end if the cgo sections contains multiple lines.Gert-Jan Timmer2018-05-271-5/+9
* Merge branch 'master' into fix/walmattn2018-05-241-0/+2
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| * Merge pull request #564 from GJRTimmer/fix/213•••Fix #213mattn2018-05-241-0/+1
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| | * ADD: SQLITE_ENABLE_UPDATE_DELETE_LIMIT•••Fixes #213Gert-Jan Timmer2018-05-231-0/+1
| * | ADD: SQLITE_OMIT_DEPRECATEDGert-Jan Timmer2018-05-231-0/+1
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* / ADD: SQLITE_DEFAULT_WAL_SYNCHRONOUSGert-Jan Timmer2018-05-231-0/+1
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* Merge pull request #540 from mattn/open-mode•••add _mutex flag to specify SQLITE_OPEN_NOMUTEX or SQLITE_OPEN_FULLMUTEXmattn2018-04-191-3/+16
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| * add _mutex flag to specify SQLITE_OPEN_NOMUTEX or SQLITE_OPEN_FULLMUTEXYasuhiro Matsumoto2018-03-161-3/+16
* | disable pread64/pwrite64 on androidYasuhiro Matsumoto2018-04-181-1/+1
* | Merge pull request #549 from mjtrangoni/fix-linter-issues•••Fix linter issuesmattn2018-04-171-9/+15
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| * fix all goconst issuesMario Trangoni2018-04-171-2/+8
| * fix all unconvert issuesMario Trangoni2018-04-171-7/+7
* | Merge pull request #530 from navytux/y/no-go-if-notneeded•••Don't spawn interrupt goroutine if we know that context cannot be canceledmattn2018-02-181-19/+23
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| * | Don't spawn interrupt goroutine if we know that context cannot be canceled•••For a Go-only project the following code pattern go func() { select { case <-ctx.Done(): // call some cancel case <-done: // work finished ok } }() // do some work close(done) works good and fast - without high scheduling overhead because scheduler usually puts spawned goroutine into run queue on the same OS thread and so after done is closed control is passed to spawned goroutine without OS context switch. However in the presence of Cgo calls in "do some work" the situation can become different - Cgo calls are treated by go runtime similarly to system calls with the effect that goroutines spawned on original OS thread tend to be migrated by scheduler to be executed on another OS thread. This in turn can bring high overhead for communicating on "done", which ultimately can result in full context switch: if the spawned goroutine had chance to run, already checked done and ctx to be not ready, and went into sleep via wait on futex - showing as something like below in strace for one read query (note futex calls): 27867 00:38:39.782146 stat(".../neo.sqlite-journal", 0x7f83809c4a20) = -1 ENOENT (No such file or directory) 27867 00:38:39.782165 pread64(3, "\0\0\0\33\0\0\10\235\0\0\10]\0\0\0\27", 16, 24) = 16 27871 00:38:39.782179 <... pselect6 resumed> ) = 0 (Timeout) 27868 00:38:39.782187 <... pselect6 resumed> ) = 0 (Timeout) 27871 00:38:39.782193 futex(0xc4200f8538, FUTEX_WAIT, 0, NULL <unfinished ...> 27868 00:38:39.782199 futex(0xc420013138, FUTEX_WAIT, 0, NULL <unfinished ...> 27867 00:38:39.782205 stat(".../neo.sqlite-wal", 0x7f83809c4a20) = -1 ENOENT (No such file or directory) 27867 00:38:39.782224 fstat(3, {st_mode=S_IFREG|0644, st_size=9031680, ...}) = 0 27867 00:38:39.782247 futex(0xc420013138, FUTEX_WAKE, 1 <unfinished ...> 27868 00:38:39.782259 <... futex resumed> ) = 0 27867 00:38:39.782265 <... futex resumed> ) = 1 27868 00:38:39.782270 pselect6(0, NULL, NULL, NULL, {tv_sec=0, tv_nsec=3000}, NULL <unfinished ...> 27867 00:38:39.782279 fcntl(3, F_SETLK, {l_type=F_UNLCK, l_whence=SEEK_SET, l_start=0, l_len=0}) = 0 27867 00:38:39.782315 fcntl(3, F_SETLK, {l_type=F_RDLCK, l_whence=SEEK_SET, l_start=1073741824, l_len=1}) = 0 27868 00:38:39.782336 <... pselect6 resumed> ) = 0 (Timeout) 27867 00:38:39.782342 fcntl(3, F_SETLK, {l_type=F_RDLCK, l_whence=SEEK_SET, l_start=1073741826, l_len=510} <unfinished ...> 27868 00:38:39.782348 futex(0xc4200f8538, FUTEX_WAKE, 1 <unfinished ...> 27867 00:38:39.782355 <... fcntl resumed> ) = 0 27871 00:38:39.782360 <... futex resumed> ) = 0 27868 00:38:39.782367 <... futex resumed> ) = 1 27871 00:38:39.782372 futex(0xc4200f8138, FUTEX_WAKE, 1 <unfinished ...> 27868 00:38:39.782377 pselect6(0, NULL, NULL, NULL, {tv_sec=0, tv_nsec=3000}, NULL <unfinished ...> 27871 00:38:39.782384 <... futex resumed> ) = 1 27870 00:38:39.782389 <... futex resumed> ) = 0 27867 00:38:39.782394 fcntl(3, F_SETLK, {l_type=F_UNLCK, l_whence=SEEK_SET, l_start=1073741824, l_len=1} <unfinished ...> 27870 00:38:39.782400 pselect6(0, NULL, NULL, NULL, {tv_sec=0, tv_nsec=3000}, NULL <unfinished ...> 27867 00:38:39.782408 <... fcntl resumed> ) = 0 Below link shows that go scheduler itself might be significantly improved for cases when there are several Cgo calls made for a request in a server: https://github.com/golang/go/issues/21827#issuecomment-329092317 in particular CGo-4 case should be closely related to this sqlite3 go package, because for one query many CGo calls are made to SQLite. However until there are proper scheduler fixes, let's make what could be made to improve time to do queries: If we know that the context under which a query is executed will never be canceled - we know we can safely skip spawning the interrupt goroutine and this was avoid ping-pong on done in between different OS threads. This brings the following speedup on my notebook with go1.10: name old req/s new req/s delta Exec 254k ± 1% 379k ± 1% +48.89% (p=0.000 n=10+10) Query 90.6k ± 2% 96.4k ± 1% +6.37% (p=0.000 n=10+10) Params 81.5k ± 1% 87.0k ± 1% +6.83% (p=0.000 n=10+10) Stmt 122k ± 2% 129k ± 1% +6.07% (p=0.000 n=10+9) Rows 2.98k ± 1% 3.06k ± 1% +2.77% (p=0.000 n=9+10) StmtRows 3.10k ± 1% 3.13k ± 1% +1.12% (p=0.000 n=9+10) name old time/op new time/op delta CustomFunctions-4 10.6µs ± 1% 10.1µs ± 1% -5.01% (p=0.000 n=10+10) Kirill Smelkov2018-02-171-19/+23
* | | only enable pread/pwrite for linux. fixes #533 and fixes #532Bas van Beek2018-02-171-1/+2
* | | Let SQLite use pread/pwrite•••With current settings SQLite was using lseek/read syscalls to read data, e.g.: 20:43:17.640660 fcntl(3, F_SETLK, {l_type=F_UNLCK, l_whence=SEEK_SET, l_start=0, l_len=0}) = 0 20:43:17.640683 fcntl(3, F_SETLK, {l_type=F_RDLCK, l_whence=SEEK_SET, l_start=1073741824, l_len=1}) = 0 20:43:17.640705 fcntl(3, F_SETLK, {l_type=F_RDLCK, l_whence=SEEK_SET, l_start=1073741826, l_len=510}) = 0 20:43:17.640725 fcntl(3, F_SETLK, {l_type=F_UNLCK, l_whence=SEEK_SET, l_start=1073741824, l_len=1}) = 0 20:43:17.640744 stat(".../neo.sqlite-journal", 0x7ffef2c91080) = -1 ENOENT (No such file or directory) 20:43:17.640764 lseek(3, 24, SEEK_SET) = 24 20:43:17.640779 read(3, "\0\0\0\33\0\0\10\235\0\0\10]\0\0\0\27", 16) = 16 20:43:17.640795 stat(".../neo.sqlite-wal", 0x7ffef2c91080) = -1 ENOENT (No such file or directory) but if we allow it to use pread it will be only 1 system call instead of 2 and reading this way can also be done in parallel because there is no global to file seeking: 20:48:42.668466 fcntl(3, F_SETLK, {l_type=F_UNLCK, l_whence=SEEK_SET, l_start=0, l_len=0}) = 0 20:48:42.668501 fcntl(3, F_SETLK, {l_type=F_RDLCK, l_whence=SEEK_SET, l_start=1073741824, l_len=1}) = 0 20:48:42.668522 fcntl(3, F_SETLK, {l_type=F_RDLCK, l_whence=SEEK_SET, l_start=1073741826, l_len=510}) = 0 20:48:42.668542 fcntl(3, F_SETLK, {l_type=F_UNLCK, l_whence=SEEK_SET, l_start=1073741824, l_len=1}) = 0 20:48:42.668561 stat(".../neo.sqlite-journal", 0x7ffdbc1f22c0) = -1 ENOENT (No such file or directory) 20:48:42.668580 pread64(3, "\0\0\0\33\0\0\10\235\0\0\10]\0\0\0\27", 16, 24) = 16 20:48:42.668597 stat(".../neo.sqlite-wal", 0x7ffdbc1f22c0) = -1 ENOENT (No such file or directory) (if needed this enablement can be done per OS) Kirill Smelkov2018-02-161-1/+1
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* | Merge pull request #525 from mattn/add-usleep•••add -DHAVE_USLEEP=1mattn2018-02-071-1/+1
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| * | add -DHAVE_USLEEP=1•••fixes #211 Yasuhiro Matsumoto2018-02-071-1/+1
* | | Add static_mock.go to allow building with CGO_ENABLED=0James C Kimble2018-01-311-0/+2
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* | Merge pull request #462 from faruzzy/master•••Updated "context" import since it has become a standard library mattn2018-01-121-2/+1
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| * | Updated "context" import since it has become a standard library after go 1.7 ...Roland Pangu2017-09-051-2/+1
* | | Fix race in ExecContext•••When the context is cancelled, an interrupt should only be made if the operation is still ongoing. Niklas Janlert2017-11-211-2/+6
* | | Merge pull request #479 from kenshaw/move-registeraggregator•••Move RegisterAggregator implementationmattn2017-11-141-0/+127
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| * | | Move RegisterAggregator implementation•••The SQLiteConn.RegisterAggregator implementation was defined in sqlite3_trace.go file, which is guarded with a build constraint. This change simply moves RegisterAggregator to the main sqlite3.go file, and moves accompanying unit tests. The rationale for this move is that it was not possible for downstream using packages to use RegisterAggregator without also specifying (and notifying the user) the 'trace' build tag. Kenneth Shaw2017-11-051-0/+127
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* | | fix to be able to build with GOTAGS=libsqlite3Tetsuya Morimoto2017-11-051-0/+2
* | | update to call _sqlite3_limit as a wrapper instead of sqlite3_limitTetsuya Morimoto2017-11-051-2/+26
* | | support sqlite3_limit to get/set run time limitTetsuya Morimoto2017-11-051-0/+30
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