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Hold the database handle mutex for the duration of sqlite3_db_release_memory().

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FossilOrigin-Name: eeaf2988004ff5343be60ab4ba2f809f76c94b51
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dan
2011-12-30 11:43:59 +00:00
parent 0420b74a94
commit d9bb3a9749
4 changed files with 11 additions and 9 deletions
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14
manifest
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@@ -1,5 +1,5 @@
C Minor\schanges\sto\sfix\scompilation\swith\sSQLITE_OMIT_WAL\sand\sSQLITE_OMIT_WSD\sdefined. C Hold\sthe\sdatabase\shandle\smutex\sfor\sthe\sduration\sof\ssqlite3_db_release_memory().
D 2011-12-30T10:54:24.715 D 2011-12-30T11:43:59.164
F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
F Makefile.in 5b4a3e12a850b021547e43daf886b25133b44c07 F Makefile.in 5b4a3e12a850b021547e43daf886b25133b44c07
F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -147,7 +147,7 @@ F src/journal.c 552839e54d1bf76fb8f7abe51868b66acacf6a0e
F src/legacy.c a199d7683d60cef73089e892409113e69c23a99f F src/legacy.c a199d7683d60cef73089e892409113e69c23a99f
F src/lempar.c 0ee69fca0be54cd93939df98d2aca4ca46f44416 F src/lempar.c 0ee69fca0be54cd93939df98d2aca4ca46f44416
F src/loadext.c f20382fbaeec832438a1ba7797bee3d3c8a6d51d F src/loadext.c f20382fbaeec832438a1ba7797bee3d3c8a6d51d
F src/main.c e2e3fb34be05658f41ac65ee5d9a44e00a358b48 F src/main.c 34646375b3ee13918e7def246d2e8af31a8cca78
F src/malloc.c 15afac5e59b6584efe072e9933aefb4230e74f97 F src/malloc.c 15afac5e59b6584efe072e9933aefb4230e74f97
F src/mem0.c 6a55ebe57c46ca1a7d98da93aaa07f99f1059645 F src/mem0.c 6a55ebe57c46ca1a7d98da93aaa07f99f1059645
F src/mem1.c 7998e7003a3047e323c849a26dda004debc04d03 F src/mem1.c 7998e7003a3047e323c849a26dda004debc04d03
@@ -182,7 +182,7 @@ F src/resolve.c 3d3e80a98f203ac6b9329e9621e29eda85ddfd40
F src/rowset.c 69afa95a97c524ba6faf3805e717b5b7ae85a697 F src/rowset.c 69afa95a97c524ba6faf3805e717b5b7ae85a697
F src/select.c a1d075db66a0ea42807353501b62997969e5be79 F src/select.c a1d075db66a0ea42807353501b62997969e5be79
F src/shell.c aa4183d4a5243d8110b1d3d77faa4aea7e9c9c2d F src/shell.c aa4183d4a5243d8110b1d3d77faa4aea7e9c9c2d
F src/sqlite.h.in 5d2d6c3f542ec484e769784014ef659b86e30aaa F src/sqlite.h.in 49398dec1abb0a2caecff17da6202179ca487fe8
F src/sqlite3ext.h 6904f4aadf976f95241311fbffb00823075d9477 F src/sqlite3ext.h 6904f4aadf976f95241311fbffb00823075d9477
F src/sqliteInt.h b8fdd9c39c8d7f5c794f4ea917293d9c75b9aff2 F src/sqliteInt.h b8fdd9c39c8d7f5c794f4ea917293d9c75b9aff2
F src/sqliteLimit.h 164b0e6749d31e0daa1a4589a169d31c0dec7b3d F src/sqliteLimit.h 164b0e6749d31e0daa1a4589a169d31c0dec7b3d
@@ -986,7 +986,7 @@ F tool/tostr.awk e75472c2f98dd76e06b8c9c1367f4ab07e122d06
F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
F tool/warnings-clang.sh 9f406d66e750e8ac031c63a9ef3248aaa347ef2a F tool/warnings-clang.sh 9f406d66e750e8ac031c63a9ef3248aaa347ef2a
F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381 F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
P 6a71ba9ce930838d44ed8d399075ba0723c9132b P 26a513a8d2dddfde82f5fd0a0e1cc186c9b0df94
R 579eb5da5cf1f5387840a047b3fbeef2 R d333c596d678fa72a4469b4e5cebba2a
U dan U dan
Z 6dd1d82cc9bb099d02383a4750cf40f4 Z ce6f0cbc05a184731b495119899185ea

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26a513a8d2dddfde82f5fd0a0e1cc186c9b0df94 eeaf2988004ff5343be60ab4ba2f809f76c94b51

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src/main.c
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@@ -540,6 +540,7 @@ sqlite3_mutex *sqlite3_db_mutex(sqlite3 *db){
*/ */
int sqlite3_db_release_memory(sqlite3 *db){ int sqlite3_db_release_memory(sqlite3 *db){
int i; int i;
sqlite3_mutex_enter(db->mutex);
sqlite3BtreeEnterAll(db); sqlite3BtreeEnterAll(db);
for(i=0; i<db->nDb; i++){ for(i=0; i<db->nDb; i++){
Btree *pBt = db->aDb[i].pBt; Btree *pBt = db->aDb[i].pBt;
@@ -549,6 +550,7 @@ int sqlite3_db_release_memory(sqlite3 *db){
} }
} }
sqlite3BtreeLeaveAll(db); sqlite3BtreeLeaveAll(db);
sqlite3_mutex_leave(db->mutex);
return SQLITE_OK; return SQLITE_OK;
} }

2
src/sqlite.h.in
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@@ -4615,7 +4615,7 @@ int sqlite3_release_memory(int);
/* /*
** CAPI3REF: Free Memory Used By A Database Connection ** CAPI3REF: Free Memory Used By A Database Connection
** **
** ^The sqlite3_db_shrink(D) interface attempts to free as much heap ** ^The sqlite3_db_release_memory(D) interface attempts to free as much heap
** memory as possible from database connection D. Unlike the ** memory as possible from database connection D. Unlike the
** [sqlite3_release_memory()] interface, this interface is effect even ** [sqlite3_release_memory()] interface, this interface is effect even
** when then [SQLITE_ENABLE_MEMORY_MANAGEMENT] compile-time option is ** when then [SQLITE_ENABLE_MEMORY_MANAGEMENT] compile-time option is