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Enable the use of shared cache for an in-memory database, so that separate
database connections can share the same in-memory database. FossilOrigin-Name: 4590e433f2a595bb80fb061024b0a3d2ca25b7b2
This commit is contained in:
drh
24
manifest
24
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@@ -1,5 +1,5 @@
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C Version\s3.7.12.1
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D 2012-05-22T02:45:53.459
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C Enable\sthe\suse\sof\sshared\scache\sfor\san\sin-memory\sdatabase,\sso\sthat\sseparate\ndatabase\sconnections\scan\sshare\sthe\ssame\sin-memory\sdatabase.
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D 2012-05-26T18:06:38.341
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F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
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F Makefile.in 2f37e468503dbe79d35c9f6dffcf3fae1ae9ec20
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F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
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@@ -118,7 +118,7 @@ F src/auth.c 523da7fb4979469955d822ff9298352d6b31de34
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F src/backup.c 6be23a344d3301ae38e92fddb3a33b91c309fce4
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F src/bitvec.c af50f1c8c0ff54d6bdb7a80e2fceca5a93670bef
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F src/btmutex.c 976f45a12e37293e32cae0281b15a21d48a8aaa7
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F src/btree.c df800f10896bc2ddaa1125c532d6e7a7b9efc532
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F src/btree.c 23e2d21f1fda37e5addc11935c78b97c7e467d0c
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F src/btree.h 48a013f8964f12d944d90e4700df47b72dd6d923
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F src/btreeInt.h 38a639c0542c29fe8331a221c4aed0cb8686249e
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F src/build.c 2bb2163bb1e69f59e9f36a9413079ead42fa1d2c
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@@ -161,7 +161,7 @@ F src/os_common.h 92815ed65f805560b66166e3583470ff94478f04
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F src/os_os2.c 4a75888ba3dfc820ad5e8177025972d74d7f2440
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F src/os_unix.c 424d46e0edab969293c2223f09923b2178171f47
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F src/os_win.c 412d6434133c7c81dc48b7702f3ea5e61c309e5c
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F src/pager.c bb5635dde0b152797836d1c72275284724bb563c
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F src/pager.c 5b14be810f26eeab807d50c5d26b8c8e34a0e6e0
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F src/pager.h ef1eaf8593e78f73885c1dfac27ad83bee23bdc5
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F src/parse.y f29df90bd3adc64b33114ab1de9fb7768fcf2099
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F src/pcache.c f8043b433a57aba85384a531e3937a804432a346
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@@ -269,7 +269,7 @@ F test/async2.test c0a9bd20816d7d6a2ceca7b8c03d3d69c28ffb8b
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F test/async3.test d73a062002376d7edc1fe3edff493edbec1fc2f7
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F test/async4.test 1787e3952128aa10238bf39945126de7ca23685a
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F test/async5.test 0dd8701bd588bf6e70c2557a22ae3f22b2567b4c
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F test/attach.test 0d112b7713611fdf0340260192749737135fda5f
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F test/attach.test 29cf17b5793ad345f97fbfedcaabe6c06a0b5e8e
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F test/attach2.test e54436ed956d3d88bdee61221da59bf3935a0966
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F test/attach3.test d89ccfe4fe6e2b5e368d480fcdfe4b496c54cf4e
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F test/attach4.test 53bf502f17647c6d6c5add46dda6bac8b6f4665c
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@@ -683,7 +683,7 @@ F test/selectA.test 06d1032fa9009314c95394f2ca2e60d9f7ae8532
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F test/selectB.test 954e4e49cf1f896d61794e440669e03a27ceea25
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F test/selectC.test 871fb55d884d3de5943c4057ebd22c2459e71977
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F test/server1.test 46803bd3fe8b99b30dbc5ff38ffc756f5c13a118
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F test/shared.test 34945a516532b11182c3eb26e31247eee3c9ae48
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F test/shared.test 4526441129635d89e185dd66a74123dc696264a0
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F test/shared2.test 03eb4a8d372e290107d34b6ce1809919a698e879
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F test/shared3.test ebf77f023f4bdaa8f74f65822b559e86ce5c6257
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F test/shared4.test 72d90821e8d2fc918a08f16d32880868d8ee8e9d
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@@ -998,10 +998,10 @@ F tool/tostr.awk e75472c2f98dd76e06b8c9c1367f4ab07e122d06
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F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
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F tool/warnings-clang.sh a8a0a3babda96dfb1ff51adda3cbbf3dfb7266c2
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F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
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P 5519cc5ef471e32a59995a34be811b46478dca1e
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R f9f0e59804fa7e60869ace7ace22bd3d
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T +bgcolor * #d0c0ff
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T +sym-release *
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T +sym-version-3.7.12.1 *
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P 6d326d44fd1d626aae0e8456e5fa2049f1ce0789
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R 6a33795d9ed8fa1d5cb60e0ecabf9128
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T *branch * shared-cache-memdb
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T *sym-shared-cache-memdb *
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T -sym-trunk *
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U drh
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Z a30e57621f706278c1c64a3624297cbb
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Z e102daae56ebdb7d93ce4a259efb516f
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@@ -1 +1 @@
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6d326d44fd1d626aae0e8456e5fa2049f1ce0789
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4590e433f2a595bb80fb061024b0a3d2ca25b7b2
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@@ -1757,7 +1757,7 @@ int sqlite3BtreeOpen(
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** If this Btree is a candidate for shared cache, try to find an
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** existing BtShared object that we can share with
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*/
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if( isMemdb==0 && isTempDb==0 ){
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if( isTempDb==0 ){
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if( vfsFlags & SQLITE_OPEN_SHAREDCACHE ){
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int nFullPathname = pVfs->mxPathname+1;
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char *zFullPathname = sqlite3Malloc(nFullPathname);
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@@ -1767,12 +1767,17 @@ int sqlite3BtreeOpen(
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sqlite3_free(p);
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return SQLITE_NOMEM;
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}
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rc = sqlite3OsFullPathname(pVfs, zFilename, nFullPathname, zFullPathname);
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if( isMemdb ){
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memcpy(zFullPathname, zFilename, sqlite3Strlen30(zFilename)+1);
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}else{
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rc = sqlite3OsFullPathname(pVfs, zFilename,
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nFullPathname, zFullPathname);
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if( rc ){
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sqlite3_free(zFullPathname);
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sqlite3_free(p);
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return rc;
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}
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}
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#if SQLITE_THREADSAFE
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mutexOpen = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_OPEN);
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sqlite3_mutex_enter(mutexOpen);
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@@ -4360,6 +4360,8 @@ int sqlite3PagerOpen(
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#ifndef SQLITE_OMIT_MEMORYDB
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if( flags & PAGER_MEMORY ){
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memDb = 1;
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zPathname = sqlite3DbStrDup(0, zFilename);
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nPathname = sqlite3Strlen30(zPathname);
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zFilename = 0;
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}
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#endif
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@@ -6743,7 +6745,8 @@ int sqlite3PagerWalCallback(Pager *pPager){
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*/
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int sqlite3PagerWalSupported(Pager *pPager){
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const sqlite3_io_methods *pMethods = pPager->fd->pMethods;
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return pPager->exclusiveMode || (pMethods->iVersion>=2 && pMethods->xShmMap);
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return pPager->memDb==0 &&
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(pPager->exclusiveMode || (pMethods->iVersion>=2 && pMethods->xShmMap));
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}
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/*
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@@ -857,6 +857,6 @@ do_test attach-10.2 {
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lrange [execsql {
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PRAGMA database_list;
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}] 9 end
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} {4 noname {} 5 inmem {}}
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} {4 noname {} 5 inmem :memory:}
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finish_test
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@@ -1056,7 +1056,29 @@ do_test shared-$av-15.2 {
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db close
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db2 close
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}
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# Shared cache on a :memory: database.
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#
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do_test shared-$av-16.1 {
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sqlite3 db1 :memory:
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sqlite3 db2 :memory:
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db1 eval {
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CREATE TABLE t1(x); INSERT INTO t1 VALUES(1),(2),(3);
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}
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db2 eval {
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SELECT x FROM t1 ORDER BY x;
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}
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} {1 2 3}
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do_test shared-$av-16.2 {
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db2 eval {
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INSERT INTO t1 VALUES(99);
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DELETE FROM t1 WHERE x=2;
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}
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db1 eval {
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SELECT x FROM t1 ORDER BY x;
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}
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} {1 3 99}
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} ;# end of autovacuum on/off loop
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sqlite3_enable_shared_cache $::enable_shared_cache
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finish_test
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