mirror of https://github.com/sqlite/sqlite
Fix the functionality associated with sqlite3_release_memory() and sqlite3_soft_heap_limit(). It is automatically disabled if the SQLITE_CONFIG_PAGECACHE option is used. (CVS 5576)
FossilOrigin-Name: d025866b09352b32a6d35b97144eaad2fafb7165
This commit is contained in:
danielk1977
parent
0d3c5d3239
commit
67e3da7ad4
24
manifest
24
manifest
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@ -1,5 +1,5 @@
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C Move\san\sassert()\sin\ssqlite3PcacheDirtyPage()\sso\sthat\sit\sdoes\snot\soccur\sbefore\slocal\svariable\sdeclarations.\sTicket\s#3325.\s(CVS\s5575)
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D 2008-08-21T04:41:02
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C Fix\sthe\sfunctionality\sassociated\swith\ssqlite3_release_memory()\sand\ssqlite3_soft_heap_limit().\sIt\sis\sautomatically\sdisabled\sif\sthe\sSQLITE_CONFIG_PAGECACHE\soption\sis\sused.\s(CVS\s5576)
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D 2008-08-21T12:19:44
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F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
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F Makefile.in 0b1c022000f55221454a7846022f11674d8024bf
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F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
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@ -116,7 +116,7 @@ F src/journal.c cffd2cd214e58c0e99c3ff632b3bee6c7cbb260e
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F src/legacy.c aac57bd984e666059011ea01ec4383892a253be3
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F src/loadext.c eb1fe4f44d7c8ff53fc0c6a4388ab79fbd34cd64
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F src/main.c aaf5af6ffe2c05f8ea4d75a850581a68ac529fa0
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F src/malloc.c 56918cddc4da7a0590eef4a2497e97b781f5c25f
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F src/malloc.c 7ccc630b359f57a47b6034af54e42eb838eebd46
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F src/md5.c 008216bbb5d34c6fbab5357aa68575ad8a31516a
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F src/mem1.c 3a7fe31d8290baa3bb203af72f7dfd6323966bcd
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F src/mem2.c 7256327b96927020824e06ffb3443b99a28da047
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@ -135,11 +135,11 @@ F src/os_common.h 24525d8b7bce66c374dfc1810a6c9043f3359b60
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F src/os_os2.c 676ed273b17bd260f905df81375c9f9950d85517
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F src/os_unix.c fe0dbc35bcd3de49e46b132abfc0f45d6dd6a864
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F src/os_win.c aefe9ee26430678a19a058a874e4e2bd91398142
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F src/pager.c 08e257feabce0d2b3f9cba83915327e2f97a51a7
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F src/pager.h fb9376af5ba8e1eb78ee3b4f15eb0f60658ffd65
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F src/pager.c 3a4358c72c9c8415e8648001c776857e6952e2b4
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F src/pager.h 3778bea71dfb9658b6c94394e18db4a5b27e6ded
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F src/parse.y d0f76d2cb8d6883d5600dc20beb961a6022b94b8
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F src/pcache.c e244ef4b7019ce08b768b3e019f5c39585dc7a96
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F src/pcache.h 71ade7a84ed87d9d20507315260b1d91808d7c9a
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F src/pcache.c 614f927e2e4e87d8a27379deefb2c0c7163e7d2f
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F src/pcache.h aef1dedd7ff6186f27052a2509fff437a8906977
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F src/pragma.c f5b271b090af7fcedd308d7c5807a5503f7a853d
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F src/prepare.c c197041e0c4770672cda75e6bfe10242f885e510
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F src/printf.c 2e984b2507291a7e16d89dc9bb60582904f6247d
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@ -189,7 +189,7 @@ F src/vacuum.c ef342828002debc97514617af3424aea8ef8522c
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F src/vdbe.c ae37f601426e01c4cdf6f650f465928bc18ad0c9
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F src/vdbe.h 41c99aaad9167c1b5431993db446de74b2f71fc3
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F src/vdbeInt.h b48c74d86a9fb62b707a3186ccca76bb32f1c6be
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F src/vdbeapi.c f21971516880fd3a10821b2cdd0e64a5a63952c9
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F src/vdbeapi.c 3c98fbed9d4e10a4fbe09fce47e88ec567927a7b
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F src/vdbeaux.c 45a53a4459c01db4e6befc977952346bfef405c3
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F src/vdbeblob.c f93110888ddc246215e9ba1f831d3d375bfd8355
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F src/vdbefifo.c 20fda2a7c4c0bcee1b90eb7e545fefcdbf2e1de7
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@ -434,7 +434,7 @@ F test/misc5.test 6a5c1e3217a95b0db05ff9a0f1ecb5ce9043ffef
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F test/misc6.test 953cc693924d88e6117aeba16f46f0bf5abede91
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F test/misc7.test fd424ff93a83bb6a31463eb043c588777d8215a8
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F test/misuse.test 30b3a458e5a70c31e74c291937b6c82204c59f33
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F test/mutex1.test 3f7c86418b85404f5c5d921f5d8023684bb3ac49
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F test/mutex1.test ee9fb9c12d03eb2291ab500a3ce30bcad6fb46e8
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F test/mutex2.test 56f282f436596e9febdc6e0db2c507432b6724bb
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F test/nan.test 14c41572ff52dbc740b1c3303dd313a90dc6084c
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F test/notnull.test 44d600f916b770def8b095a9962dbe3be5a70d82
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@ -623,7 +623,7 @@ F tool/speedtest16.c c8a9c793df96db7e4933f0852abb7a03d48f2e81
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F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
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F tool/speedtest8.c 1dbced29de5f59ba2ebf877edcadf171540374d1
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F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
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P 5e9559c0490b9e0395e1da4d36bd33942350978c
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R ffb9b74aabb8421663a6722de8981c79
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P 899fa19d1ab9c40a2ffc1c5170476292d0509e33
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R ad1e5ab4aaee003ca6f449d2a77708ca
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U danielk1977
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Z e689954593a083b11a089928219e4342
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Z a88d7d4ec4d431cb5810e83fa3ed8841
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@ -1 +1 @@
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899fa19d1ab9c40a2ffc1c5170476292d0509e33
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d025866b09352b32a6d35b97144eaad2fafb7165
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@ -12,7 +12,7 @@
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**
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** Memory allocation functions used throughout sqlite.
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**
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** $Id: malloc.c,v 1.35 2008/08/20 14:49:24 danielk1977 Exp $
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** $Id: malloc.c,v 1.36 2008/08/21 12:19:44 danielk1977 Exp $
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*/
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#include "sqliteInt.h"
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#include <stdarg.h>
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@ -62,8 +62,11 @@ void sqlite3_soft_heap_limit(int n){
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*/
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int sqlite3_release_memory(int n){
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#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
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int nRet = sqlite3VdbeReleaseMemory(n);
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nRet += sqlite3PagerReleaseMemory(n-nRet);
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int nRet = 0;
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#if 0
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nRet += sqlite3VdbeReleaseMemory(n);
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#endif
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nRet += sqlite3PcacheReleaseMemory(n-nRet);
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return nRet;
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#else
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return SQLITE_OK;
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49
src/pager.c
49
src/pager.c
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@ -18,7 +18,7 @@
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** file simultaneously, or one process from reading the database while
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** another is writing.
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**
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** @(#) $Id: pager.c,v 1.472 2008/08/21 04:35:19 danielk1977 Exp $
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** @(#) $Id: pager.c,v 1.473 2008/08/21 12:19:44 danielk1977 Exp $
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*/
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#ifndef SQLITE_OMIT_DISKIO
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#include "sqliteInt.h"
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@ -2453,22 +2453,26 @@ static int pagerStress(void *p){
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PgHdr *pPg = sqlite3PcacheDirtyPage(pPager->pPCache);
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int rc = SQLITE_OK;
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if( pPg && pPager->errCode==SQLITE_OK ){
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if( pPg ){
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assert( pPg->flags&PGHDR_DIRTY );
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if( pPg->flags&PGHDR_NEED_SYNC ){
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rc = syncJournal(pPager);
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if( rc==SQLITE_OK && pPager->fullSync
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&& !(sqlite3OsDeviceCharacteristics(pPager->fd)&SQLITE_IOCAP_SAFE_APPEND)
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){
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pPager->nRec = 0;
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rc = writeJournalHdr(pPager);
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if( pPager->errCode==SQLITE_OK ){
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if( pPg->flags&PGHDR_NEED_SYNC ){
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rc = syncJournal(pPager);
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if( rc==SQLITE_OK && pPager->fullSync &&
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!(sqlite3OsDeviceCharacteristics(pPager->fd)&SQLITE_IOCAP_SAFE_APPEND)
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){
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pPager->nRec = 0;
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rc = writeJournalHdr(pPager);
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}
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}
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}
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if( rc==SQLITE_OK ){
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rc = pager_write_pagelist(pPg);
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}
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if( rc!=SQLITE_OK ){
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pager_error(pPager, rc);
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if( rc==SQLITE_OK ){
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rc = pager_write_pagelist(pPg);
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}
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if( rc!=SQLITE_OK ){
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pager_error(pPager, rc);
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}
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}else{
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sqlite3PcacheMakeClean(pPg);
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}
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}
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return rc;
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@ -2523,21 +2527,6 @@ static int hasHotJournal(Pager *pPager, int *pExists){
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return rc;
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}
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#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
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/*
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** This function is called to free superfluous dynamically allocated memory
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** held by the pager system. Memory in use by any SQLite pager allocated
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** by the current thread may be sqlite3_free()ed.
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**
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** nReq is the number of bytes of memory required. Once this much has
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** been released, the function returns. The return value is the total number
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** of bytes of memory released.
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*/
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int sqlite3PagerReleaseMemory(int nReq){
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return 0;
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}
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#endif /* SQLITE_ENABLE_MEMORY_MANAGEMENT */
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/*
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** Read the content of page pPg out of the database file.
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*/
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@ -13,7 +13,7 @@
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** subsystem. The page cache subsystem reads and writes a file a page
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** at a time and provides a journal for rollback.
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**
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** @(#) $Id: pager.h,v 1.78 2008/08/20 14:49:25 danielk1977 Exp $
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** @(#) $Id: pager.h,v 1.79 2008/08/21 12:19:44 danielk1977 Exp $
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*/
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#ifndef _PAGER_H_
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@ -115,10 +115,6 @@ void *sqlite3PagerTempSpace(Pager*);
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int sqlite3PagerSync(Pager *pPager);
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void sqlite3PagerAlwaysRollback(Pager *pPager);
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#if defined(SQLITE_ENABLE_MEMORY_MANAGEMENT) && !defined(SQLITE_OMIT_DISKIO)
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int sqlite3PagerReleaseMemory(int);
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#endif
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#ifdef SQLITE_HAS_CODEC
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void sqlite3PagerSetCodec(Pager*,void*(*)(void*,void*,Pgno,int),void*);
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#endif
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141
src/pcache.c
141
src/pcache.c
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@ -11,7 +11,7 @@
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*************************************************************************
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** This file implements that page cache.
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**
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** @(#) $Id: pcache.c,v 1.3 2008/08/21 04:41:02 danielk1977 Exp $
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** @(#) $Id: pcache.c,v 1.4 2008/08/21 12:19:44 danielk1977 Exp $
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*/
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#include "sqliteInt.h"
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@ -331,7 +331,10 @@ void *pcacheMalloc(int sz){
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sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_USED, 1);
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return (void*)p;
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}else{
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void *p = sqlite3Malloc(sz);
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void *p;
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pcacheExitGlobal();
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p = sqlite3Malloc(sz);
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pcacheEnterGlobal();
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if( p ){
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sz = sqlite3MallocSize(p);
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sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, sz);
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@ -406,6 +409,65 @@ static void pcachePageFree(PgHdr *p){
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pcacheFree(p);
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}
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/*
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** Return the number of bytes that will be returned to the heap when
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** the argument is passed to pcachePageFree().
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*/
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static int pcachePageSize(PgHdr *p){
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assert( sqlite3_mutex_held(pcache.mutex_lru) );
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assert( !pcache.pStart );
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assert( p->apSave[0]==0 );
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assert( p->apSave[1]==0 );
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assert( p && p->pCache );
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return sqlite3MallocSize(p);
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}
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static PgHdr *pcacheRecycle(PCache *pCache){
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PCache *pCsr;
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PgHdr *p = 0;
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assert( pcache.isInit );
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assert( sqlite3_mutex_held(pcache.mutex_lru) );
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if( !pcache.pLruTail && SQLITE_OK==sqlite3_mutex_try(pcache.mutex_mem2) ){
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/* Invoke xStress() callbacks until the LRU list contains at least one
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** page that can be reused or until the xStress() callback of all
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** caches has been invoked.
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*/
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for(pCsr=pcache.pAll; pCsr&&!pcache.pLruTail; pCsr=pCsr->pNextAll){
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assert( pCsr->iInUseMM==0 );
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pCsr->iInUseMM = 1;
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if( pCsr->xStress && (pCsr->iInUseDB==0 || pCache==pCsr) ){
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pcacheExitGlobal();
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pCsr->xStress(pCsr->pStress);
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pcacheEnterGlobal();
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}
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pCsr->iInUseMM = 0;
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}
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sqlite3_mutex_leave(pcache.mutex_mem2);
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}
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p = pcache.pLruTail;
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if( p ){
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pcacheRemoveFromLruList(p);
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pcacheRemoveFromHash(p);
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pcacheRemoveFromList(&p->pCache->pClean, p);
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/* If the always-rollback flag is set on the page being recycled, set
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** the always-rollback flag on the corresponding pager.
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*/
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if( p->flags&PGHDR_ALWAYS_ROLLBACK ){
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assert(p->pPager);
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sqlite3PagerAlwaysRollback(p->pPager);
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}
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}
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return p;
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}
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/*
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** Obtain space for a page. Try to recycle an old page if the limit on the
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** number of pages has been reached. If the limit has not been reached or
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@ -428,51 +490,14 @@ static PgHdr *pcacheRecycleOrAlloc(PCache *pCache){
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if( (pcache.mxPage && pcache.nPage>=pcache.mxPage)
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|| (!pcache.mxPage && bPurg && pcache.nPurgeable>=pcache.mxPagePurgeable)
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){
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PCache *pCsr;
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/* If the above test succeeds, then a page will be obtained by recycling
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** an existing page.
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*/
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if( !pcache.pLruTail && SQLITE_OK==sqlite3_mutex_try(pcache.mutex_mem2) ){
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/* Invoke xStress() callbacks until the LRU list contains at least one
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** page that can be reused or until the xStress() callback of all
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** caches has been invoked.
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*/
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for(pCsr=pcache.pAll; pCsr&&!pcache.pLruTail; pCsr=pCsr->pNextAll){
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assert( pCsr->iInUseMM==0 );
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pCsr->iInUseMM = 1;
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if( pCsr->xStress && (pCsr->iInUseDB==0 || pCache==pCsr) ){
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pcacheExitGlobal();
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pCsr->xStress(pCsr->pStress);
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pcacheEnterGlobal();
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}
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pCsr->iInUseMM = 0;
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}
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sqlite3_mutex_leave(pcache.mutex_mem2);
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}
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p = pcache.pLruTail;
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/* If the above test succeeds, then try to obtain a buffer by recycling
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** an existing page. */
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p = pcacheRecycle(pCache);
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}
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if( p ){
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pcacheRemoveFromLruList(p);
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pcacheRemoveFromHash(p);
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pcacheRemoveFromList(&p->pCache->pClean, p);
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/* If the always-rollback flag is set on the page being recycled, set
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** the always-rollback flag on the corresponding pager.
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*/
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if( p->flags&PGHDR_ALWAYS_ROLLBACK ){
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assert(p->pPager);
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sqlite3PagerAlwaysRollback(p->pPager);
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}
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if( p->pCache->szPage!=szPage || p->pCache->szExtra!=szExtra ){
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pcachePageFree(p);
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p = 0;
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}
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if( p && (p->pCache->szPage!=szPage || p->pCache->szExtra!=szExtra) ){
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pcachePageFree(p);
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p = 0;
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}
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if( !p ){
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@ -1141,3 +1166,29 @@ void sqlite3PcacheUnlock(PCache *pCache){
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pCache->iInUseDB--;
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assert( pCache->iInUseDB>=0 );
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}
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#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
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/*
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** This function is called to free superfluous dynamically allocated memory
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** held by the pager system. Memory in use by any SQLite pager allocated
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** by the current thread may be sqlite3_free()ed.
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**
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** nReq is the number of bytes of memory required. Once this much has
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** been released, the function returns. The return value is the total number
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** of bytes of memory released.
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*/
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int sqlite3PcacheReleaseMemory(int nReq){
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int nFree = 0;
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if( pcache.pStart==0 ){
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PgHdr *p;
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pcacheEnterGlobal();
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while( (nReq<0 || nFree<nReq) && (p=pcacheRecycle(0)) ){
|
||||
nFree += pcachePageSize(p);
|
||||
pcachePageFree(p);
|
||||
}
|
||||
pcacheExitGlobal();
|
||||
}
|
||||
return nFree;
|
||||
}
|
||||
#endif /* SQLITE_ENABLE_MEMORY_MANAGEMENT */
|
||||
|
||||
|
|
|
|||
|
|
@ -12,7 +12,7 @@
|
|||
** This header file defines the interface that the sqlite page cache
|
||||
** subsystem.
|
||||
**
|
||||
** @(#) $Id: pcache.h,v 1.1 2008/08/20 14:49:25 danielk1977 Exp $
|
||||
** @(#) $Id: pcache.h,v 1.2 2008/08/21 12:19:44 danielk1977 Exp $
|
||||
*/
|
||||
|
||||
#ifndef _PCACHE_H_
|
||||
|
|
@ -171,5 +171,7 @@ void sqlite3PcacheSetCachesize(PCache *, int);
|
|||
void sqlite3PcacheLock(PCache *);
|
||||
void sqlite3PcacheUnlock(PCache *);
|
||||
|
||||
int sqlite3PcacheReleaseMemory(int);
|
||||
|
||||
#endif /* _PCACHE_H_ */
|
||||
|
||||
|
|
|
|||
|
|
@ -13,12 +13,12 @@
|
|||
** This file contains code use to implement APIs that are part of the
|
||||
** VDBE.
|
||||
**
|
||||
** $Id: vdbeapi.c,v 1.139 2008/08/11 18:44:58 drh Exp $
|
||||
** $Id: vdbeapi.c,v 1.140 2008/08/21 12:19:44 danielk1977 Exp $
|
||||
*/
|
||||
#include "sqliteInt.h"
|
||||
#include "vdbeInt.h"
|
||||
|
||||
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
|
||||
#if 0 && defined(SQLITE_ENABLE_MEMORY_MANAGEMENT)
|
||||
/*
|
||||
** The following structure contains pointers to the end points of a
|
||||
** doubly-linked list of all compiled SQL statements that may be holding
|
||||
|
|
|
|||
|
|
@ -9,7 +9,7 @@
|
|||
#
|
||||
#***********************************************************************
|
||||
#
|
||||
# $Id: mutex1.test,v 1.11 2008/08/20 14:49:25 danielk1977 Exp $
|
||||
# $Id: mutex1.test,v 1.12 2008/08/21 12:19:44 danielk1977 Exp $
|
||||
|
||||
set testdir [file dirname $argv0]
|
||||
source $testdir/tester.tcl
|
||||
|
|
@ -99,11 +99,6 @@ ifcapable threadsafe {
|
|||
multithread {fast static_lru static_master static_mem static_mem2 static_prng }
|
||||
serialized {fast recursive static_lru static_master static_mem static_mem2 static_prng }
|
||||
} {
|
||||
ifcapable memorymanage {
|
||||
if {$mode ne "singlethread"} {
|
||||
lappend mutexes static_lru static_lru2 static_mem2
|
||||
}
|
||||
}
|
||||
|
||||
do_test mutex1.2.$mode.1 {
|
||||
catch {db close}
|
||||
|
|
|
|||
Loading…
Reference in New Issue