mirror of
https://github.com/sqlite/sqlite.git
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Clean up the locking in the btree logic. (CVS 4316)
FossilOrigin-Name: 967ab229af462a8ae663090ea36b4cc10e351653
This commit is contained in:
drh
32
manifest
32
manifest
@ -1,5 +1,5 @@
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C Fix\smemory\sleak\sof\sInteriorReader.term.\s\sComes\sup\swhen\sdoing\squeries\nagainst\slarge\ssegments.\s(CVS\s4315)
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D 2007-08-28T20:36:54
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C Clean\sup\sthe\slocking\sin\sthe\sbtree\slogic.\s(CVS\s4316)
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D 2007-08-28T22:24:35
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F Makefile.in bfcc303429a5d9dcd552d807ee016c77427418c3
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F Makefile.linux-gcc 65241babba6faf1152bf86574477baab19190499
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F README 9c4e2d6706bdcc3efdd773ce752a8cdab4f90028
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@ -81,10 +81,10 @@ F src/analyze.c a14237d869c6bea0846493b59317e4097e81a0b6
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F src/attach.c a52225c75b107be8c5bc144a2b6d20201be3f8f8
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F src/auth.c 083c1205b45e3f52291ec539d396b4fc557856b3
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F src/btmutex.c 3a19fcb311d0d09e63d397779be881d4273f4518
|
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F src/btree.c 850cd5de860e01233153ade9b24ffc775a794e8e
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F src/btree.c 8796aa42fd16feb587844489a0fce8c66e52ac02
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F src/btree.h a8fb26c56b745b57446c2bf29133619261313051
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F src/btreeInt.h c1ba892252bc4dd76ad66da056536c64b23456e3
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F src/build.c 08001e8a12b06178193dc4a8f24610f58de80dae
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F src/btreeInt.h 5b1bc919cb80f0dd6baec1cdbae737f9806a7e3b
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F src/build.c 99b0b0c44ce7673c00d8c0c97ce536e3b796328b
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F src/callback.c a542236a68060caad378efa30006ca46cf77b1b2
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F src/complete.c 4cf68fd75d60257524cbe74f87351b9848399131
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F src/date.c af235f38f50809abd0a96da3bb3e0cc32be6226e
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@ -107,7 +107,7 @@ F src/mem2.c 1a2ca756a285b5365d667841508cc1f98938b8d8
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F src/mutex.c 40e5ba09d56863895882a0204d93832e9960ea78
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F src/mutex.h 4d3babe3a691533ac980967d394da512140b5143
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F src/mutex_os2.c d47e9bd495583dd31263d8fe55160a31eb600a3c
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F src/mutex_unix.c 84ae0344b0bd6591e3bfea2cb6d375233d39f8a4
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F src/mutex_unix.c ff77650261a245035b79c5c8a174f4e05d3cae8a
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F src/mutex_w32.c 8716478c5f1829b27fd2c9a0759230a9dc3aa9e3
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F src/os.c a8ed3c495161475dbce255f7003144144fb425f1
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F src/os.h 2bfbbad126a775e4d8c7d59eb4d9585a5fd7dfb5
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@ -120,8 +120,8 @@ F src/os_unix.c 89bf24aa2475048a7833c45c522e7c6a81b83bb8
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F src/os_unix.h 5768d56d28240d3fe4537fac08cc85e4fb52279e
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F src/os_win.c 3ffd3aacff4cb69848284e29dcec0feff23b0752
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F src/os_win.h 41a946bea10f61c158ce8645e7646b29d44f122b
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F src/pager.c 51ca27639ab25c8838afc856d3cc6045a98752a7
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F src/pager.h 53087c6fb9db01aed17c7fd044662a27507e89b8
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F src/pager.c 97fd0bb853e01e6890ad9aae97e7f9155330ebdc
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F src/pager.h a9872db184613ae90ae80921f5fd956aa8f3522e
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F src/parse.y 2d2ce439dc6184621fb0b86f4fc5aca7f391a590
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F src/pragma.c 9b989506a1b7c8aecd6befb8235e2f57a4aba7e5
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F src/prepare.c 29ea14cf6b0558f2f80aa53e112bff55f1119e36
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@ -163,10 +163,10 @@ F src/utf.c 4af6259d5906b5a1bf3035cc387c4d7907bdd56e
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F src/util.c 3f9c0387b54f977726790f52ab92cd3d9379b367
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F src/vacuum.c 5ec133b69edf581a232af7e2b01f45c9f2b8be32
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F src/vdbe.c 62d210babaac906a5847d7bd4c71e7b114595e85
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F src/vdbe.h 5b3ee0fd91a08579f514713038fa7dbef9edf407
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F src/vdbeInt.h 0681e0b74a43d3adfec65780d73b2db8f826c7c9
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F src/vdbe.h 498e9ddade4baf70f2fc39e585670131dde07caa
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F src/vdbeInt.h a9dcd0688783abbd60981aff7ecc5b57a9559765
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F src/vdbeapi.c bdd0aea216744482dd1b7fab56de18ba5b6fbdf4
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F src/vdbeaux.c bffdf7b69de21a70520260d359e19df64f31aea4
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F src/vdbeaux.c 0bbc8fbb6bcd610e98ce8eef77d0db660710f9dd
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F src/vdbeblob.c d12ed95dac0992e1e372d079d76af047cc42f7c7
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F src/vdbefifo.c 334c838c8f42d61a94813d136019ee566b5dc2f6
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F src/vdbemem.c 896fa3f8df9d2661eb15c7ce361857741b447268
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@ -403,7 +403,7 @@ F test/server1.test e328b8e641ba8fe9273132cfef497383185dc1f5
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F test/shared.test 08b30d5f1939efff0517e7ff8ec7b74ad31c151b
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F test/shared2.test 0ee9de8964d70e451936a48c41cb161d9134ccf4
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F test/shared3.test 01e3e124dbb3859788aabc7cfb82f7ea04421749
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F test/shared_err.test 9fa070e3e7d63022a81b6156ac71f114c0678e3d
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F test/shared_err.test 99d3d87924cedc1db2233ef59f38c389dd358698
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F test/soak.test 64f9b27fbcdec43335a88c546ce1983e6ba40d7b
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F test/softheap1.test 0c49aa6eee25e7d32943e85e8d1f20eff566b1dc
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F test/sort.test 0e4456e729e5a92a625907c63dcdedfbe72c5dc5
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@ -567,7 +567,7 @@ F www/tclsqlite.tcl 8be95ee6dba05eabcd27a9d91331c803f2ce2130
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F www/vdbe.tcl 87a31ace769f20d3627a64fa1fade7fed47b90d0
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F www/version3.tcl 890248cf7b70e60c383b0e84d77d5132b3ead42b
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F www/whentouse.tcl fc46eae081251c3c181bd79c5faef8195d7991a5
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P dd43a2de3ed1659d70361370d07a184dd8ece45f
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R 70912c36e1c512cb72f986c6f3262b7a
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U shess
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Z e249b078ef5ae37e1d80116148f5bc5a
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P 6c617bd89fc57881a2a308a6360e8ebb42835d46
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R 45b11caba5c119849cdae69b051cb491
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U drh
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Z 8c8847e04e8b6bae7d208c08aa3c66c5
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@ -1 +1 @@
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6c617bd89fc57881a2a308a6360e8ebb42835d46
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967ab229af462a8ae663090ea36b4cc10e351653
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168
src/btree.c
168
src/btree.c
@ -9,7 +9,7 @@
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** May you share freely, never taking more than you give.
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**
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*************************************************************************
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** $Id: btree.c,v 1.413 2007/08/28 02:27:52 drh Exp $
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** $Id: btree.c,v 1.414 2007/08/28 22:24:35 drh Exp $
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**
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** This file implements a external (disk-based) database using BTrees.
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** See the header comment on "btreeInt.h" for additional information.
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@ -96,6 +96,7 @@ static int queryTableLock(Btree *p, Pgno iTab, u8 eLock){
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BtShared *pBt = p->pBt;
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BtLock *pIter;
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assert( sqlite3BtreeMutexHeld(p->pSqlite->mutex) );
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assert( sqlite3BtreeMutexHeld(pBt->mutex) );
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/* This is a no-op if the shared-cache is not enabled */
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@ -148,6 +149,7 @@ static int lockTable(Btree *p, Pgno iTable, u8 eLock){
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BtLock *pLock = 0;
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BtLock *pIter;
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assert( sqlite3BtreeMutexHeld(p->pSqlite->mutex) );
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assert( sqlite3BtreeMutexHeld(pBt->mutex) );
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/* This is a no-op if the shared-cache is not enabled */
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@ -214,6 +216,7 @@ static int lockTable(Btree *p, Pgno iTable, u8 eLock){
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static void unlockAllTables(Btree *p){
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BtLock **ppIter = &p->pBt->pLock;
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assert( sqlite3BtreeMutexHeld(p->pSqlite->mutex) );
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assert( sqlite3BtreeMutexHeld(p->pBt->mutex) );
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assert( p->sharable || 0==*ppIter );
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@ -236,6 +239,7 @@ static void releasePage(MemPage *pPage); /* Forward reference */
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** Invalidate the overflow page-list cache for cursor pCur, if any.
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*/
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static void invalidateOverflowCache(BtCursor *pCur){
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assert( sqlite3BtreeMutexHeld(pCur->pBt->mutex) );
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sqlite3_free(pCur->aOverflow);
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pCur->aOverflow = 0;
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}
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@ -265,7 +269,7 @@ static int saveCursorPosition(BtCursor *pCur){
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assert( CURSOR_VALID==pCur->eState );
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assert( 0==pCur->pKey );
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assert( sqlite3BtreeMutexHeld(pCur->pBtree->pBt->mutex) );
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assert( sqlite3BtreeMutexHeld(pCur->pBt->mutex) );
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rc = sqlite3BtreeKeySize(pCur, &pCur->nKey);
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@ -308,6 +312,7 @@ static int saveCursorPosition(BtCursor *pCur){
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static int saveAllCursors(BtShared *pBt, Pgno iRoot, BtCursor *pExcept){
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BtCursor *p;
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assert( sqlite3BtreeMutexHeld(pBt->mutex) );
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assert( pExcept==0 || pExcept->pBt==pBt );
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for(p=pBt->pCursor; p; p=p->pNext){
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if( p!=pExcept && (0==iRoot || p->pgnoRoot==iRoot) &&
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p->eState==CURSOR_VALID ){
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@ -324,7 +329,7 @@ static int saveAllCursors(BtShared *pBt, Pgno iRoot, BtCursor *pExcept){
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** Clear the current cursor position.
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*/
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static void clearCursorPosition(BtCursor *pCur){
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assert( sqlite3BtreeMutexHeld(pCur->pBtree->pBt->mutex) );
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assert( sqlite3BtreeMutexHeld(pCur->pBt->mutex) );
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sqlite3_free(pCur->pKey);
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pCur->pKey = 0;
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pCur->eState = CURSOR_INVALID;
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@ -343,6 +348,7 @@ static void clearCursorPosition(BtCursor *pCur){
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*/
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int sqlite3BtreeRestoreOrClearCursorPosition(BtCursor *pCur){
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int rc;
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assert( sqlite3BtreeMutexHeld(pCur->pBt->mutex) );
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assert( pCur->eState==CURSOR_REQUIRESEEK );
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#ifndef SQLITE_OMIT_INCRBLOB
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if( pCur->isIncrblobHandle ){
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@ -1052,9 +1058,11 @@ static void pageDestructor(DbPage *pData, int pageSize){
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MemPage *pPage;
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assert( (pageSize & 7)==0 );
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pPage = (MemPage *)sqlite3PagerGetExtra(pData);
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assert( pPage->isInit==0 || sqlite3BtreeMutexHeld(pPage->pBt->mutex) );
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if( pPage->pParent ){
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MemPage *pParent = pPage->pParent;
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assert( sqlite3BtreeMutexHeld(pPage->pBt->mutex) );
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assert( pPage->isInit==1 );
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assert( pParent->pBt==pPage->pBt );
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pPage->pParent = 0;
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releasePage(pParent);
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}
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@ -1115,13 +1123,10 @@ int sqlite3BtreeOpen(
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#endif
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#endif
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if( pSqlite ){
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pVfs = pSqlite->pVfs;
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}else{
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pVfs = sqlite3_vfs_find(0);
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}
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assert( sqlite3BtreeMutexHeld(pSqlite->mutex) );
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assert( pSqlite!=0 );
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assert( sqlite3_mutex_held(pSqlite->mutex) );
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pVfs = pSqlite->pVfs;
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p = sqlite3MallocZero(sizeof(Btree));
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if( !p ){
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return SQLITE_NOMEM;
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@ -1136,7 +1141,7 @@ int sqlite3BtreeOpen(
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*/
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if( (flags & BTREE_PRIVATE)==0
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&& isMemdb==0
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&& (pSqlite==0 || (pSqlite->flags &SQLITE_Vtab)==0)
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&& (pSqlite->flags & SQLITE_Vtab)==0
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&& zFilename && zFilename[0]
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&& sqlite3SharedCacheEnabled
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){
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@ -1155,7 +1160,8 @@ int sqlite3BtreeOpen(
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sqlite3_mutex_enter(mutexShared);
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for(pBt=sqlite3SharedCacheList; pBt; pBt=pBt->pNext){
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assert( pBt->nRef>0 );
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if( 0==strcmp(zFullPathname, sqlite3PagerFilename(pBt->pPager)) ){
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if( 0==strcmp(zFullPathname, sqlite3PagerFilename(pBt->pPager))
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&& sqlite3PagerVfs(pBt->pPager)==pVfs ){
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p->pBt = pBt;
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pBt->nRef++;
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break;
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@ -1338,6 +1344,7 @@ int sqlite3BtreeClose(Btree *p){
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BtCursor *pCur;
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/* Close all cursors opened via this handle. */
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assert( sqlite3_mutex_held(p->pSqlite->mutex) );
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sqlite3BtreeEnter(p);
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pCur = pBt->pCursor;
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while( pCur ){
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@ -1390,12 +1397,8 @@ int sqlite3BtreeClose(Btree *p){
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/*
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** Short-cuts for entering and leaving mutexes on a cursor.
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*/
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static void cursorLeave(BtCursor *p){
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sqlite3BtreeLeave(p->pBtree);
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}
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static void cursorEnter(BtCursor *pCur){
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sqlite3BtreeEnter(pCur->pBtree);
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}
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# define cursorEnter(X) assert( sqlite3_mutex_held(X->pBt->mutex) )
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# define cursorLeave(X)
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#else
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# define cursorEnter(X)
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# define cursorLeave(X)
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@ -1406,6 +1409,7 @@ static void cursorEnter(BtCursor *pCur){
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*/
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int sqlite3BtreeSetBusyHandler(Btree *p, BusyHandler *pHandler){
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BtShared *pBt = p->pBt;
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assert( sqlite3_mutex_held(p->pSqlite->mutex) );
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sqlite3BtreeEnter(p);
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pBt->pBusyHandler = pHandler;
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sqlite3PagerSetBusyhandler(pBt->pPager, pHandler);
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@ -1430,6 +1434,7 @@ int sqlite3BtreeSetBusyHandler(Btree *p, BusyHandler *pHandler){
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*/
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int sqlite3BtreeSetCacheSize(Btree *p, int mxPage){
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BtShared *pBt = p->pBt;
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assert( sqlite3_mutex_held(p->pSqlite->mutex) );
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sqlite3BtreeEnter(p);
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sqlite3PagerSetCachesize(pBt->pPager, mxPage);
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sqlite3BtreeLeave(p);
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@ -1447,6 +1452,7 @@ int sqlite3BtreeSetCacheSize(Btree *p, int mxPage){
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#ifndef SQLITE_OMIT_PAGER_PRAGMAS
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int sqlite3BtreeSetSafetyLevel(Btree *p, int level, int fullSync){
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BtShared *pBt = p->pBt;
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assert( sqlite3_mutex_held(p->pSqlite->mutex) );
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sqlite3BtreeEnter(p);
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sqlite3PagerSetSafetyLevel(pBt->pPager, level, fullSync);
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sqlite3BtreeLeave(p);
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@ -1461,8 +1467,9 @@ int sqlite3BtreeSetSafetyLevel(Btree *p, int level, int fullSync){
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int sqlite3BtreeSyncDisabled(Btree *p){
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BtShared *pBt = p->pBt;
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int rc;
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assert( pBt && pBt->pPager );
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assert( sqlite3_mutex_held(p->pSqlite->mutex) );
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sqlite3BtreeEnter(p);
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assert( pBt && pBt->pPager );
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rc = sqlite3PagerNosync(pBt->pPager);
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sqlite3BtreeLeave(p);
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return rc;
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@ -1986,6 +1993,7 @@ static int relocatePage(
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assert( eType==PTRMAP_OVERFLOW2 || eType==PTRMAP_OVERFLOW1 ||
|
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eType==PTRMAP_BTREE || eType==PTRMAP_ROOTPAGE );
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assert( sqlite3BtreeMutexHeld(pBt->mutex) );
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assert( pDbPage->pBt==pBt );
|
||||
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||||
/* Move page iDbPage from it's current location to page number iFreePage */
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TRACE(("AUTOVACUUM: Moving %d to free page %d (ptr page %d type %d)\n",
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@ -2595,6 +2603,7 @@ static int btreeCursor(
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BtShared *pBt = p->pBt;
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assert( sqlite3BtreeMutexHeld(pBt->mutex) );
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assert( sqlite3BtreeMutexHeld(p->pSqlite->mutex) );
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*ppCur = 0;
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if( wrFlag ){
|
||||
if( pBt->readOnly ){
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||||
@ -2636,6 +2645,7 @@ static int btreeCursor(
|
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pCur->xCompare = xCmp ? xCmp : dfltCompare;
|
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pCur->pArg = pArg;
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pCur->pBtree = p;
|
||||
pCur->pBt = pBt;
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pCur->wrFlag = wrFlag;
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||||
pCur->pNext = pBt->pCursor;
|
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if( pCur->pNext ){
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@ -2676,9 +2686,10 @@ int sqlite3BtreeCursor(
|
||||
** when the last cursor is closed.
|
||||
*/
|
||||
int sqlite3BtreeCloseCursor(BtCursor *pCur){
|
||||
BtShared *pBt = pCur->pBtree->pBt;
|
||||
BtShared *pBt = pCur->pBt;
|
||||
|
||||
cursorEnter(pCur);
|
||||
assert( sqlite3_mutex_held(pCur->pBt->mutex) );
|
||||
assert( sqlite3_mutex_held(pCur->pBtree->pSqlite->mutex) );
|
||||
clearCursorPosition(pCur);
|
||||
if( pCur->pPrev ){
|
||||
pCur->pPrev->pNext = pCur->pNext;
|
||||
@ -2691,7 +2702,6 @@ int sqlite3BtreeCloseCursor(BtCursor *pCur){
|
||||
releasePage(pCur->pPage);
|
||||
unlockBtreeIfUnused(pBt);
|
||||
invalidateOverflowCache(pCur);
|
||||
cursorLeave(pCur);
|
||||
sqlite3_free(pCur);
|
||||
return SQLITE_OK;
|
||||
}
|
||||
@ -2701,14 +2711,14 @@ int sqlite3BtreeCloseCursor(BtCursor *pCur){
|
||||
** The temporary cursor is not on the cursor list for the Btree.
|
||||
*/
|
||||
void sqlite3BtreeGetTempCursor(BtCursor *pCur, BtCursor *pTempCur){
|
||||
cursorEnter(pCur);
|
||||
memcpy(pTempCur, pCur, sizeof(*pCur));
|
||||
pTempCur->pNext = 0;
|
||||
pTempCur->pPrev = 0;
|
||||
if( pTempCur->pPage ){
|
||||
cursorEnter(pCur);
|
||||
sqlite3PagerRef(pTempCur->pPage->pDbPage);
|
||||
cursorLeave(pCur);
|
||||
}
|
||||
cursorLeave(pCur);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -2716,11 +2726,11 @@ void sqlite3BtreeGetTempCursor(BtCursor *pCur, BtCursor *pTempCur){
|
||||
** function above.
|
||||
*/
|
||||
void sqlite3BtreeReleaseTempCursor(BtCursor *pCur){
|
||||
cursorEnter(pCur);
|
||||
if( pCur->pPage ){
|
||||
cursorEnter(pCur);
|
||||
sqlite3PagerUnref(pCur->pPage->pDbPage);
|
||||
cursorLeave(pCur);
|
||||
}
|
||||
cursorLeave(pCur);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -2778,7 +2788,7 @@ void sqlite3BtreeReleaseTempCursor(BtCursor *pCur){
|
||||
int sqlite3BtreeKeySize(BtCursor *pCur, i64 *pSize){
|
||||
int rc;
|
||||
|
||||
sqlite3BtreeEnter(pCur->pBtree);
|
||||
assert( sqlite3_mutex_held(pCur->pBt->mutex) );
|
||||
rc = restoreOrClearCursorPosition(pCur);
|
||||
if( rc==SQLITE_OK ){
|
||||
assert( pCur->eState==CURSOR_INVALID || pCur->eState==CURSOR_VALID );
|
||||
@ -2789,7 +2799,6 @@ int sqlite3BtreeKeySize(BtCursor *pCur, i64 *pSize){
|
||||
*pSize = pCur->info.nKey;
|
||||
}
|
||||
}
|
||||
sqlite3BtreeLeave(pCur->pBtree);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -2803,7 +2812,7 @@ int sqlite3BtreeKeySize(BtCursor *pCur, i64 *pSize){
|
||||
int sqlite3BtreeDataSize(BtCursor *pCur, u32 *pSize){
|
||||
int rc;
|
||||
|
||||
sqlite3BtreeEnter(pCur->pBtree);
|
||||
assert( sqlite3_mutex_held(pCur->pBt->mutex) );
|
||||
rc = restoreOrClearCursorPosition(pCur);
|
||||
if( rc==SQLITE_OK ){
|
||||
assert( pCur->eState==CURSOR_INVALID || pCur->eState==CURSOR_VALID );
|
||||
@ -2815,7 +2824,6 @@ int sqlite3BtreeDataSize(BtCursor *pCur, u32 *pSize){
|
||||
*pSize = pCur->info.nData;
|
||||
}
|
||||
}
|
||||
sqlite3BtreeLeave(pCur->pBtree);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -2978,14 +2986,14 @@ static int accessPayload(
|
||||
int rc = SQLITE_OK;
|
||||
u32 nKey;
|
||||
int iIdx = 0;
|
||||
MemPage *pPage = pCur->pPage; /* Btree page of current cursor entry */
|
||||
BtShared *pBt = pCur->pBtree->pBt; /* Btree this cursor belongs to */
|
||||
MemPage *pPage = pCur->pPage; /* Btree page of current cursor entry */
|
||||
BtShared *pBt = pCur->pBt; /* Btree this cursor belongs to */
|
||||
|
||||
assert( pPage );
|
||||
assert( pCur->eState==CURSOR_VALID );
|
||||
assert( pCur->idx>=0 && pCur->idx<pPage->nCell );
|
||||
assert( offset>=0 );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBtree->pBt->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBt->mutex) );
|
||||
|
||||
getCellInfo(pCur);
|
||||
aPayload = pCur->info.pCell + pCur->info.nHeader;
|
||||
@ -3111,20 +3119,20 @@ static int accessPayload(
|
||||
int sqlite3BtreeKey(BtCursor *pCur, u32 offset, u32 amt, void *pBuf){
|
||||
int rc;
|
||||
|
||||
sqlite3BtreeEnter(pCur->pBtree);
|
||||
cursorEnter(pCur);
|
||||
rc = restoreOrClearCursorPosition(pCur);
|
||||
if( rc==SQLITE_OK ){
|
||||
assert( pCur->eState==CURSOR_VALID );
|
||||
assert( pCur->pPage!=0 );
|
||||
if( pCur->pPage->intKey ){
|
||||
sqlite3BtreeLeave(pCur->pBtree);
|
||||
cursorLeave(pCur);
|
||||
return SQLITE_CORRUPT_BKPT;
|
||||
}
|
||||
assert( pCur->pPage->intKey==0 );
|
||||
assert( pCur->idx>=0 && pCur->idx<pCur->pPage->nCell );
|
||||
rc = accessPayload(pCur, offset, amt, (unsigned char*)pBuf, 0, 0);
|
||||
}
|
||||
sqlite3BtreeLeave(pCur->pBtree);
|
||||
cursorLeave(pCur);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -3140,7 +3148,7 @@ int sqlite3BtreeKey(BtCursor *pCur, u32 offset, u32 amt, void *pBuf){
|
||||
int sqlite3BtreeData(BtCursor *pCur, u32 offset, u32 amt, void *pBuf){
|
||||
int rc;
|
||||
|
||||
sqlite3BtreeEnter(pCur->pBtree);
|
||||
cursorEnter(pCur);
|
||||
rc = restoreOrClearCursorPosition(pCur);
|
||||
if( rc==SQLITE_OK ){
|
||||
assert( pCur->eState==CURSOR_VALID );
|
||||
@ -3148,7 +3156,7 @@ int sqlite3BtreeData(BtCursor *pCur, u32 offset, u32 amt, void *pBuf){
|
||||
assert( pCur->idx>=0 && pCur->idx<pCur->pPage->nCell );
|
||||
rc = accessPayload(pCur, offset, amt, pBuf, 1, 0);
|
||||
}
|
||||
sqlite3BtreeLeave(pCur->pBtree);
|
||||
cursorLeave(pCur);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -3183,7 +3191,7 @@ static const unsigned char *fetchPayload(
|
||||
|
||||
assert( pCur!=0 && pCur->pPage!=0 );
|
||||
assert( pCur->eState==CURSOR_VALID );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBtree->pBt->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBt->mutex) );
|
||||
pPage = pCur->pPage;
|
||||
assert( pCur->idx>=0 && pCur->idx<pPage->nCell );
|
||||
getCellInfo(pCur);
|
||||
@ -3223,14 +3231,14 @@ static const unsigned char *fetchPayload(
|
||||
** in the common case where no overflow pages are used.
|
||||
*/
|
||||
const void *sqlite3BtreeKeyFetch(BtCursor *pCur, int *pAmt){
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBtree->pBt->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBt->mutex) );
|
||||
if( pCur->eState==CURSOR_VALID ){
|
||||
return (const void*)fetchPayload(pCur, pAmt, 0);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
const void *sqlite3BtreeDataFetch(BtCursor *pCur, int *pAmt){
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBtree->pBt->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBt->mutex) );
|
||||
if( pCur->eState==CURSOR_VALID ){
|
||||
return (const void*)fetchPayload(pCur, pAmt, 1);
|
||||
}
|
||||
@ -3246,7 +3254,7 @@ static int moveToChild(BtCursor *pCur, u32 newPgno){
|
||||
int rc;
|
||||
MemPage *pNewPage;
|
||||
MemPage *pOldPage;
|
||||
BtShared *pBt = pCur->pBtree->pBt;
|
||||
BtShared *pBt = pCur->pBt;
|
||||
|
||||
assert( sqlite3BtreeMutexHeld(pBt->mutex) );
|
||||
assert( pCur->eState==CURSOR_VALID );
|
||||
@ -3298,7 +3306,7 @@ void sqlite3BtreeMoveToParent(BtCursor *pCur){
|
||||
MemPage *pPage;
|
||||
int idxParent;
|
||||
|
||||
sqlite3BtreeEnter(pCur->pBtree);
|
||||
cursorEnter(pCur);
|
||||
assert( pCur->eState==CURSOR_VALID );
|
||||
pPage = pCur->pPage;
|
||||
assert( pPage!=0 );
|
||||
@ -3312,7 +3320,7 @@ void sqlite3BtreeMoveToParent(BtCursor *pCur){
|
||||
pCur->info.nSize = 0;
|
||||
assert( pParent->idxShift==0 );
|
||||
pCur->idx = idxParent;
|
||||
sqlite3BtreeLeave(pCur->pBtree);
|
||||
cursorLeave(pCur);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -3324,7 +3332,6 @@ static int moveToRoot(BtCursor *pCur){
|
||||
Btree *p = pCur->pBtree;
|
||||
BtShared *pBt = p->pBt;
|
||||
|
||||
assert( sqlite3BtreeMutexHeld(p->pSqlite->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pBt->mutex) );
|
||||
if( pCur->eState==CURSOR_REQUIRESEEK ){
|
||||
clearCursorPosition(pCur);
|
||||
@ -3368,8 +3375,7 @@ static int moveToLeftmost(BtCursor *pCur){
|
||||
int rc = SQLITE_OK;
|
||||
MemPage *pPage;
|
||||
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBtree->pBt->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBtree->pSqlite->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBt->mutex) );
|
||||
assert( pCur->eState==CURSOR_VALID );
|
||||
while( rc==SQLITE_OK && !(pPage = pCur->pPage)->leaf ){
|
||||
assert( pCur->idx>=0 && pCur->idx<pPage->nCell );
|
||||
@ -3394,8 +3400,7 @@ static int moveToRightmost(BtCursor *pCur){
|
||||
int rc = SQLITE_OK;
|
||||
MemPage *pPage;
|
||||
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBtree->pBt->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBtree->pSqlite->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBt->mutex) );
|
||||
assert( pCur->eState==CURSOR_VALID );
|
||||
while( rc==SQLITE_OK && !(pPage = pCur->pPage)->leaf ){
|
||||
pgno = get4byte(&pPage->aData[pPage->hdrOffset+8]);
|
||||
@ -3416,7 +3421,7 @@ static int moveToRightmost(BtCursor *pCur){
|
||||
int sqlite3BtreeFirst(BtCursor *pCur, int *pRes){
|
||||
int rc;
|
||||
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBtree->pBt->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBt->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBtree->pSqlite->mutex) );
|
||||
rc = moveToRoot(pCur);
|
||||
if( rc==SQLITE_OK ){
|
||||
@ -3440,7 +3445,7 @@ int sqlite3BtreeFirst(BtCursor *pCur, int *pRes){
|
||||
int sqlite3BtreeLast(BtCursor *pCur, int *pRes){
|
||||
int rc;
|
||||
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBtree->pBt->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBt->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBtree->pSqlite->mutex) );
|
||||
rc = moveToRoot(pCur);
|
||||
if( rc==SQLITE_OK ){
|
||||
@ -3493,7 +3498,7 @@ int sqlite3BtreeMoveto(
|
||||
){
|
||||
int rc;
|
||||
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBtree->pBt->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBt->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBtree->pSqlite->mutex) );
|
||||
rc = moveToRoot(pCur);
|
||||
if( rc ){
|
||||
@ -3621,6 +3626,7 @@ int sqlite3BtreeEof(BtCursor *pCur){
|
||||
** Return the database connection handle for a cursor.
|
||||
*/
|
||||
sqlite3 *sqlite3BtreeCursorDb(const BtCursor *pCur){
|
||||
assert( sqlite3_mutex_held(pCur->pBtree->pSqlite->mutex) );
|
||||
return pCur->pBtree->pSqlite;
|
||||
}
|
||||
|
||||
@ -3634,6 +3640,7 @@ static int btreeNext(BtCursor *pCur, int *pRes){
|
||||
int rc;
|
||||
MemPage *pPage;
|
||||
|
||||
assert( sqlite3_mutex_held(pCur->pBt->mutex) );
|
||||
rc = restoreOrClearCursorPosition(pCur);
|
||||
if( rc!=SQLITE_OK ){
|
||||
return rc;
|
||||
@ -3708,6 +3715,7 @@ static int btreePrevious(BtCursor *pCur, int *pRes){
|
||||
Pgno pgno;
|
||||
MemPage *pPage;
|
||||
|
||||
assert( sqlite3_mutex_held(pCur->pBt->mutex) );
|
||||
rc = restoreOrClearCursorPosition(pCur);
|
||||
if( rc!=SQLITE_OK ){
|
||||
return rc;
|
||||
@ -5486,20 +5494,20 @@ int sqlite3BtreeInsert(
|
||||
unsigned char *oldCell;
|
||||
unsigned char *newCell = 0;
|
||||
|
||||
sqlite3BtreeEnter(p);
|
||||
cursorEnter(pCur);
|
||||
if( pBt->inTransaction!=TRANS_WRITE ){
|
||||
/* Must start a transaction before doing an insert */
|
||||
rc = pBt->readOnly ? SQLITE_READONLY : SQLITE_ERROR;
|
||||
sqlite3BtreeLeave(p);
|
||||
cursorLeave(pCur);
|
||||
return rc;
|
||||
}
|
||||
assert( !pBt->readOnly );
|
||||
if( !pCur->wrFlag ){
|
||||
sqlite3BtreeLeave(p);
|
||||
cursorLeave(pCur);
|
||||
return SQLITE_PERM; /* Cursor not open for writing */
|
||||
}
|
||||
if( checkReadLocks(pCur->pBtree, pCur->pgnoRoot, pCur) ){
|
||||
sqlite3BtreeLeave(p);
|
||||
cursorLeave(pCur);
|
||||
return SQLITE_LOCKED; /* The table pCur points to has a read lock */
|
||||
}
|
||||
|
||||
@ -5509,7 +5517,7 @@ int sqlite3BtreeInsert(
|
||||
SQLITE_OK!=(rc = saveAllCursors(pBt, pCur->pgnoRoot, pCur)) ||
|
||||
SQLITE_OK!=(rc = sqlite3BtreeMoveto(pCur, pKey, nKey, appendBias, &loc))
|
||||
){
|
||||
sqlite3BtreeLeave(p);
|
||||
cursorLeave(pCur);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -5558,7 +5566,7 @@ int sqlite3BtreeInsert(
|
||||
}
|
||||
end_insert:
|
||||
sqlite3_free(newCell);
|
||||
sqlite3BtreeLeave(p);
|
||||
cursorLeave(pCur);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -5574,25 +5582,25 @@ int sqlite3BtreeDelete(BtCursor *pCur){
|
||||
Btree *p = pCur->pBtree;
|
||||
BtShared *pBt = p->pBt;
|
||||
|
||||
sqlite3BtreeEnter(p);
|
||||
cursorEnter(pCur);
|
||||
assert( pPage->isInit );
|
||||
if( pBt->inTransaction!=TRANS_WRITE ){
|
||||
/* Must start a transaction before doing a delete */
|
||||
rc = pBt->readOnly ? SQLITE_READONLY : SQLITE_ERROR;
|
||||
sqlite3BtreeLeave(p);
|
||||
cursorLeave(pCur);
|
||||
return rc;
|
||||
}
|
||||
assert( !pBt->readOnly );
|
||||
if( pCur->idx >= pPage->nCell ){
|
||||
sqlite3BtreeLeave(p);
|
||||
cursorLeave(pCur);
|
||||
return SQLITE_ERROR; /* The cursor is not pointing to anything */
|
||||
}
|
||||
if( !pCur->wrFlag ){
|
||||
sqlite3BtreeLeave(p);
|
||||
cursorLeave(pCur);
|
||||
return SQLITE_PERM; /* Did not open this cursor for writing */
|
||||
}
|
||||
if( checkReadLocks(pCur->pBtree, pCur->pgnoRoot, pCur) ){
|
||||
sqlite3BtreeLeave(p);
|
||||
cursorLeave(pCur);
|
||||
return SQLITE_LOCKED; /* The table pCur points to has a read lock */
|
||||
}
|
||||
|
||||
@ -5606,7 +5614,7 @@ int sqlite3BtreeDelete(BtCursor *pCur){
|
||||
(rc = saveAllCursors(pBt, pCur->pgnoRoot, pCur))!=0 ||
|
||||
(rc = sqlite3PagerWrite(pPage->pDbPage))!=0
|
||||
){
|
||||
sqlite3BtreeLeave(p);
|
||||
cursorLeave(pCur);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -5620,7 +5628,7 @@ int sqlite3BtreeDelete(BtCursor *pCur){
|
||||
}
|
||||
rc = clearCell(pPage, pCell);
|
||||
if( rc ){
|
||||
sqlite3BtreeLeave(p);
|
||||
cursorLeave(pCur);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -5679,7 +5687,7 @@ int sqlite3BtreeDelete(BtCursor *pCur){
|
||||
if( rc==SQLITE_OK ){
|
||||
moveToRoot(pCur);
|
||||
}
|
||||
sqlite3BtreeLeave(p);
|
||||
cursorLeave(pCur);
|
||||
return rc;
|
||||
}
|
||||
|
||||
@ -5700,6 +5708,8 @@ static int btreeCreateTable(Btree *p, int *piTable, int flags){
|
||||
Pgno pgnoRoot;
|
||||
int rc;
|
||||
|
||||
assert( sqlite3_mutex_held(p->pSqlite->mutex) );
|
||||
assert( sqlite3_mutex_held(pBt->mutex) );
|
||||
if( pBt->inTransaction!=TRANS_WRITE ){
|
||||
/* Must start a transaction first */
|
||||
rc = pBt->readOnly ? SQLITE_READONLY : SQLITE_ERROR;
|
||||
@ -6131,6 +6141,7 @@ int sqlite3BtreeFlags(BtCursor *pCur){
|
||||
*/
|
||||
MemPage *pPage = pCur->pPage;
|
||||
assert( sqlite3BtreeMutexHeld(pPage->pBt->mutex) );
|
||||
assert( pPage->pBt==pCur->pBt );
|
||||
return pPage ? pPage->aData[pPage->hdrOffset] : 0;
|
||||
}
|
||||
|
||||
@ -6140,8 +6151,6 @@ int sqlite3BtreeFlags(BtCursor *pCur){
|
||||
** testing and debugging only.
|
||||
*/
|
||||
Pager *sqlite3BtreePager(Btree *p){
|
||||
assert( sqlite3BtreeMutexHeld(p->pSqlite->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(p->pBt->mutex) );
|
||||
return p->pBt->pPager;
|
||||
}
|
||||
|
||||
@ -6585,17 +6594,25 @@ char *sqlite3BtreeIntegrityCheck(
|
||||
|
||||
/*
|
||||
** Return the full pathname of the underlying database file.
|
||||
**
|
||||
** The pager filename is invariant as long as the pager is
|
||||
** open so it is safe to access without the BtShared mutex.
|
||||
*/
|
||||
const char *sqlite3BtreeGetFilename(Btree *p){
|
||||
assert( p->pBt->pPager!=0 );
|
||||
assert( sqlite3_mutex_held(p->pSqlite->mutex) );
|
||||
return sqlite3PagerFilename(p->pBt->pPager);
|
||||
}
|
||||
|
||||
/*
|
||||
** Return the pathname of the directory that contains the database file.
|
||||
**
|
||||
** The pager directory name is invariant as long as the pager is
|
||||
** open so it is safe to access without the BtShared mutex.
|
||||
*/
|
||||
const char *sqlite3BtreeGetDirname(Btree *p){
|
||||
assert( p->pBt->pPager!=0 );
|
||||
assert( sqlite3_mutex_held(p->pSqlite->mutex) );
|
||||
return sqlite3PagerDirname(p->pBt->pPager);
|
||||
}
|
||||
|
||||
@ -6603,9 +6620,13 @@ const char *sqlite3BtreeGetDirname(Btree *p){
|
||||
** Return the pathname of the journal file for this database. The return
|
||||
** value of this routine is the same regardless of whether the journal file
|
||||
** has been created or not.
|
||||
**
|
||||
** The pager journal filename is invariant as long as the pager is
|
||||
** open so it is safe to access without the BtShared mutex.
|
||||
*/
|
||||
const char *sqlite3BtreeGetJournalname(Btree *p){
|
||||
assert( p->pBt->pPager!=0 );
|
||||
assert( sqlite3_mutex_held(p->pSqlite->mutex) );
|
||||
return sqlite3PagerJournalname(p->pBt->pPager);
|
||||
}
|
||||
|
||||
@ -6685,7 +6706,7 @@ int sqlite3BtreeCopyFile(Btree *pTo, Btree *pFrom){
|
||||
** Return non-zero if a transaction is active.
|
||||
*/
|
||||
int sqlite3BtreeIsInTrans(Btree *p){
|
||||
assert( sqlite3BtreeMutexHeld(p->pSqlite->mutex) );
|
||||
assert( p==0 || sqlite3BtreeMutexHeld(p->pSqlite->mutex) );
|
||||
return (p && (p->inTrans==TRANS_WRITE));
|
||||
}
|
||||
|
||||
@ -6724,7 +6745,6 @@ int sqlite3BtreeIsInReadTrans(Btree *p){
|
||||
*/
|
||||
void *sqlite3BtreeSchema(Btree *p, int nBytes, void(*xFree)(void *)){
|
||||
BtShared *pBt = p->pBt;
|
||||
assert( sqlite3BtreeMutexHeld(p->pSqlite->mutex) );
|
||||
sqlite3BtreeEnter(p);
|
||||
if( !pBt->pSchema ){
|
||||
pBt->pSchema = sqlite3MallocZero(nBytes);
|
||||
@ -6776,7 +6796,7 @@ int sqlite3BtreeLockTable(Btree *p, int iTab, u8 isWriteLock){
|
||||
** to change the length of the data stored.
|
||||
*/
|
||||
int sqlite3BtreePutData(BtCursor *pCsr, u32 offset, u32 amt, void *z){
|
||||
assert( sqlite3BtreeMutexHeld(pCsr->pBtree->pBt->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCsr->pBt->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCsr->pBtree->pSqlite->mutex) );
|
||||
assert(pCsr->isIncrblobHandle);
|
||||
if( pCsr->eState==CURSOR_REQUIRESEEK ){
|
||||
@ -6791,8 +6811,8 @@ int sqlite3BtreePutData(BtCursor *pCsr, u32 offset, u32 amt, void *z){
|
||||
if( !pCsr->wrFlag ){
|
||||
return SQLITE_READONLY;
|
||||
}
|
||||
assert( !pCsr->pBtree->pBt->readOnly
|
||||
&& pCsr->pBtree->pBt->inTransaction==TRANS_WRITE );
|
||||
assert( !pCsr->pBt->readOnly
|
||||
&& pCsr->pBt->inTransaction==TRANS_WRITE );
|
||||
if( checkReadLocks(pCsr->pBtree, pCsr->pgnoRoot, pCsr) ){
|
||||
return SQLITE_LOCKED; /* The table pCur points to has a read lock */
|
||||
}
|
||||
@ -6814,7 +6834,7 @@ int sqlite3BtreePutData(BtCursor *pCsr, u32 offset, u32 amt, void *z){
|
||||
** sqlite3BtreePutData()).
|
||||
*/
|
||||
void sqlite3BtreeCacheOverflow(BtCursor *pCur){
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBtree->pBt->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBt->mutex) );
|
||||
assert( sqlite3BtreeMutexHeld(pCur->pBtree->pSqlite->mutex) );
|
||||
assert(!pCur->isIncrblobHandle);
|
||||
assert(!pCur->aOverflow);
|
||||
|
||||
@ -9,7 +9,7 @@
|
||||
** May you share freely, never taking more than you give.
|
||||
**
|
||||
*************************************************************************
|
||||
** $Id: btreeInt.h,v 1.10 2007/08/27 21:49:34 drh Exp $
|
||||
** $Id: btreeInt.h,v 1.11 2007/08/28 22:24:35 drh Exp $
|
||||
**
|
||||
** This file implements a external (disk-based) database using BTrees.
|
||||
** For a detailed discussion of BTrees, refer to
|
||||
@ -318,7 +318,11 @@ struct MemPage {
|
||||
** schema associated with the database file are all contained within
|
||||
** the BtShared object.
|
||||
**
|
||||
** All fields in this structure are accessed under the sqlite3.mutex.
|
||||
** All fields in this structure are accessed under sqlite3.mutex.
|
||||
** The pBt pointer itself may not be changed while there exists cursors
|
||||
** in the referenced BtShared that point back to this Btree since those
|
||||
** cursors have to do go through this Btree to find their BtShared and
|
||||
** they often do so without holding sqlite3.mutex.
|
||||
*/
|
||||
struct Btree {
|
||||
sqlite3 *pSqlite; /* The database connection holding this btree */
|
||||
@ -419,11 +423,11 @@ struct CellInfo {
|
||||
** particular database connection identified BtCursor.pBtree.pSqlite.
|
||||
**
|
||||
** Fields in this structure are accessed under the BtShared.mutex
|
||||
** mutex. The pBtree field is safe to access under the
|
||||
** BtShared->pBtree->pSqlite->mutex mutex.
|
||||
** found at self->pBt->mutex.
|
||||
*/
|
||||
struct BtCursor {
|
||||
Btree *pBtree; /* The Btree to which this cursor belongs */
|
||||
BtShared *pBt; /* The BtShared this cursor points to */
|
||||
BtCursor *pNext, *pPrev; /* Forms a linked list of all cursors */
|
||||
int (*xCompare)(void*,int,const void*,int,const void*); /* Key comp func */
|
||||
void *pArg; /* First arg to xCompare() */
|
||||
|
||||
@ -22,7 +22,7 @@
|
||||
** COMMIT
|
||||
** ROLLBACK
|
||||
**
|
||||
** $Id: build.c,v 1.439 2007/08/28 02:27:52 drh Exp $
|
||||
** $Id: build.c,v 1.440 2007/08/28 22:24:35 drh Exp $
|
||||
*/
|
||||
#include "sqliteInt.h"
|
||||
#include <ctype.h>
|
||||
@ -164,7 +164,7 @@ void sqlite3FinishCoding(Parse *pParse){
|
||||
sqlite3VdbeJumpHere(v, pParse->cookieGoto-1);
|
||||
for(iDb=0, mask=1; iDb<db->nDb; mask<<=1, iDb++){
|
||||
if( (mask & pParse->cookieMask)==0 ) continue;
|
||||
sqlite3VdbeAddMutexBtree(v, db->aDb[iDb].pBt);
|
||||
sqlite3VdbeUsesBtree(v, iDb, db->aDb[iDb].pBt);
|
||||
sqlite3VdbeAddOp(v, OP_Transaction, iDb, (mask & pParse->writeMask)!=0);
|
||||
sqlite3VdbeAddOp(v, OP_VerifyCookie, iDb, pParse->cookieValue[iDb]);
|
||||
}
|
||||
|
||||
@ -11,7 +11,7 @@
|
||||
*************************************************************************
|
||||
** This file contains the C functions that implement mutexes for pthreads
|
||||
**
|
||||
** $Id: mutex_unix.c,v 1.1 2007/08/28 16:34:43 drh Exp $
|
||||
** $Id: mutex_unix.c,v 1.2 2007/08/28 22:24:35 drh Exp $
|
||||
*/
|
||||
#include "sqliteInt.h"
|
||||
|
||||
@ -34,6 +34,9 @@ struct sqlite3_mutex {
|
||||
int id; /* Mutex type */
|
||||
int nRef; /* Number of entrances */
|
||||
pthread_t owner; /* Thread that is within this mutex */
|
||||
#ifdef SQLITE_DEBUG
|
||||
int trace; /* True to trace changes */
|
||||
#endif
|
||||
};
|
||||
|
||||
/*
|
||||
@ -149,6 +152,11 @@ void sqlite3_mutex_enter(sqlite3_mutex *p){
|
||||
pthread_mutex_lock(&p->mutex);
|
||||
p->owner = pthread_self();
|
||||
p->nRef++;
|
||||
#ifdef SQLITE_DEBUG
|
||||
if( p->trace ){
|
||||
printf("enter mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef);
|
||||
}
|
||||
#endif
|
||||
}
|
||||
int sqlite3_mutex_try(sqlite3_mutex *p){
|
||||
int rc;
|
||||
@ -158,6 +166,11 @@ int sqlite3_mutex_try(sqlite3_mutex *p){
|
||||
p->owner = pthread_self();
|
||||
p->nRef++;
|
||||
rc = SQLITE_OK;
|
||||
#ifdef SQLITE_DEBUG
|
||||
if( p->trace ){
|
||||
printf("enter mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef);
|
||||
}
|
||||
#endif
|
||||
}else{
|
||||
rc = SQLITE_BUSY;
|
||||
}
|
||||
@ -175,6 +188,11 @@ void sqlite3_mutex_leave(sqlite3_mutex *p){
|
||||
assert( sqlite3_mutex_held(p) );
|
||||
p->nRef--;
|
||||
assert( p->nRef==0 || p->id==SQLITE_MUTEX_RECURSIVE );
|
||||
#ifdef SQLITE_DEBUG
|
||||
if( p->trace ){
|
||||
printf("leave mutex %p (%d) with nRef=%d\n", p, p->trace, p->nRef);
|
||||
}
|
||||
#endif
|
||||
pthread_mutex_unlock(&p->mutex);
|
||||
}
|
||||
|
||||
|
||||
@ -18,7 +18,7 @@
|
||||
** file simultaneously, or one process from reading the database while
|
||||
** another is writing.
|
||||
**
|
||||
** @(#) $Id: pager.c,v 1.378 2007/08/28 08:00:18 danielk1977 Exp $
|
||||
** @(#) $Id: pager.c,v 1.379 2007/08/28 22:24:35 drh Exp $
|
||||
*/
|
||||
#ifndef SQLITE_OMIT_DISKIO
|
||||
#include "sqliteInt.h"
|
||||
@ -4796,6 +4796,13 @@ const char *sqlite3PagerFilename(Pager *pPager){
|
||||
return pPager->zFilename;
|
||||
}
|
||||
|
||||
/*
|
||||
** Return the VFS structure for the pager.
|
||||
*/
|
||||
const sqlite3_vfs *sqlite3PagerVfs(Pager *pPager){
|
||||
return pPager->pVfs;
|
||||
}
|
||||
|
||||
/*
|
||||
** Return the directory of the database file.
|
||||
*/
|
||||
|
||||
@ -13,7 +13,7 @@
|
||||
** subsystem. The page cache subsystem reads and writes a file a page
|
||||
** at a time and provides a journal for rollback.
|
||||
**
|
||||
** @(#) $Id: pager.h,v 1.62 2007/08/17 15:53:37 danielk1977 Exp $
|
||||
** @(#) $Id: pager.h,v 1.63 2007/08/28 22:24:35 drh Exp $
|
||||
*/
|
||||
|
||||
#ifndef _PAGER_H_
|
||||
@ -85,6 +85,7 @@ void sqlite3PagerDontWrite(DbPage*);
|
||||
int sqlite3PagerRefcount(Pager*);
|
||||
void sqlite3PagerSetSafetyLevel(Pager*,int,int);
|
||||
const char *sqlite3PagerFilename(Pager*);
|
||||
const sqlite3_vfs *sqlite3PagerVfs(Pager*);
|
||||
const char *sqlite3PagerDirname(Pager*);
|
||||
const char *sqlite3PagerJournalname(Pager*);
|
||||
int sqlite3PagerNosync(Pager*);
|
||||
|
||||
@ -15,7 +15,7 @@
|
||||
** or VDBE. The VDBE implements an abstract machine that runs a
|
||||
** simple program to access and modify the underlying database.
|
||||
**
|
||||
** $Id: vdbe.h,v 1.111 2007/08/28 02:27:52 drh Exp $
|
||||
** $Id: vdbe.h,v 1.112 2007/08/28 22:24:35 drh Exp $
|
||||
*/
|
||||
#ifndef _SQLITE_VDBE_H_
|
||||
#define _SQLITE_VDBE_H_
|
||||
@ -120,7 +120,7 @@ void sqlite3VdbeChangeP2(Vdbe*, int addr, int P2);
|
||||
void sqlite3VdbeJumpHere(Vdbe*, int addr);
|
||||
void sqlite3VdbeChangeToNoop(Vdbe*, int addr, int N);
|
||||
void sqlite3VdbeChangeP3(Vdbe*, int addr, const char *zP1, int N);
|
||||
void sqlite3VdbeAddMutexBtree(Vdbe*, Btree*);
|
||||
void sqlite3VdbeUsesBtree(Vdbe*, int, Btree*);
|
||||
VdbeOp *sqlite3VdbeGetOp(Vdbe*, int);
|
||||
int sqlite3VdbeMakeLabel(Vdbe*);
|
||||
void sqlite3VdbeDelete(Vdbe*);
|
||||
|
||||
@ -332,6 +332,7 @@ struct Vdbe {
|
||||
u8 inVtabMethod; /* See comments above */
|
||||
int nChange; /* Number of db changes made since last reset */
|
||||
i64 startTime; /* Time when query started - used for profiling */
|
||||
int btreeMask; /* Bitmask of db->aDb[] entries referenced */
|
||||
BtreeMutexSet mtxSet; /* Set of Btree mutexes */
|
||||
int nSql; /* Number of bytes in zSql */
|
||||
char *zSql; /* Text of the SQL statement that generated this */
|
||||
|
||||
@ -659,9 +659,14 @@ static char *displayP3(Op *pOp, char *zTemp, int nTemp){
|
||||
#endif
|
||||
|
||||
/*
|
||||
** Add a btree to the set of btrees that might need a mutex.
|
||||
** Declare to the Vdbe that the BTree object at db->aDb[i] is used.
|
||||
**
|
||||
*/
|
||||
void sqlite3VdbeAddMutexBtree(Vdbe *p, Btree *pBtree){
|
||||
void sqlite3VdbeUsesBtree(Vdbe *p, int i, Btree *pBtree){
|
||||
assert( i>=0 && i<p->db->nDb );
|
||||
assert( i<sizeof(p->btreeMask)*8 );
|
||||
assert( p->db->aDb[i].pBt==pBtree );
|
||||
p->btreeMask |= 1<<i;
|
||||
sqlite3BtreeMutexSetInsert(&p->mtxSet, pBtree);
|
||||
}
|
||||
|
||||
@ -1091,7 +1096,7 @@ static int vdbeCommit(sqlite3 *db){
|
||||
*/
|
||||
for(i=0; i<db->nDb; i++){
|
||||
Btree *pBt = db->aDb[i].pBt;
|
||||
if( pBt && sqlite3BtreeIsInTrans(pBt) ){
|
||||
if( sqlite3BtreeIsInTrans(pBt) ){
|
||||
needXcommit = 1;
|
||||
if( i!=1 ) nTrans++;
|
||||
}
|
||||
@ -1183,7 +1188,7 @@ static int vdbeCommit(sqlite3 *db){
|
||||
for(i=0; i<db->nDb; i++){
|
||||
Btree *pBt = db->aDb[i].pBt;
|
||||
if( i==1 ) continue; /* Ignore the TEMP database */
|
||||
if( pBt && sqlite3BtreeIsInTrans(pBt) ){
|
||||
if( sqlite3BtreeIsInTrans(pBt) ){
|
||||
char const *zFile = sqlite3BtreeGetJournalname(pBt);
|
||||
if( zFile[0]==0 ) continue; /* Ignore :memory: databases */
|
||||
if( !needSync && !sqlite3BtreeSyncDisabled(pBt) ){
|
||||
@ -1225,7 +1230,7 @@ static int vdbeCommit(sqlite3 *db){
|
||||
*/
|
||||
for(i=0; rc==SQLITE_OK && i<db->nDb; i++){
|
||||
Btree *pBt = db->aDb[i].pBt;
|
||||
if( pBt && sqlite3BtreeIsInTrans(pBt) ){
|
||||
if( pBt ){
|
||||
rc = sqlite3BtreeCommitPhaseOne(pBt, zMaster);
|
||||
}
|
||||
}
|
||||
|
||||
@ -13,7 +13,7 @@
|
||||
# cache context. What happens to connection B if one connection A encounters
|
||||
# an IO-error whilst reading or writing the file-system?
|
||||
#
|
||||
# $Id: shared_err.test,v 1.12 2007/08/25 13:37:49 danielk1977 Exp $
|
||||
# $Id: shared_err.test,v 1.13 2007/08/28 22:24:35 drh Exp $
|
||||
|
||||
proc skip {args} {}
|
||||
|
||||
@ -156,6 +156,7 @@ do_ioerr_test shared_ioerr-3 -tclprep {
|
||||
sqlite3_step $::STMT ;# Cursor points at 001.001.001.001
|
||||
|
||||
} -tclbody {
|
||||
btree_breakpoint
|
||||
execsql {
|
||||
BEGIN;
|
||||
INSERT INTO t1 VALUES('201.201.201.201.201', NULL);
|
||||
|
||||
Reference in New Issue
Block a user