mirror of https://github.com/sqlite/sqlite
Make sure all memory allocations are 8-byte aligned. Ticket #3040.
Note that the mem3.c memory allocator returns 4-byte aligned memory allocations. But as mem3.c is intended for use in 32-bit embedded systems, we are not going to change that. (CVS 4978) FossilOrigin-Name: d11e8e307af906db75ae7aede790464fabd06422
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@ -1,5 +1,5 @@
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C Add\ssource\sfile\stest_osinst.c.\sA\swrapper\svfs\swith\sinstrumentation\scapabilities.\s(CVS\s4977)
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D 2008-04-10T14:51:01
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C Make\ssure\sall\smemory\sallocations\sare\s8-byte\saligned.\s\sTicket\s#3040.\nNote\sthat\sthe\smem3.c\smemory\sallocator\sreturns\s4-byte\saligned\smemory\nallocations.\s\sBut\sas\smem3.c\sis\sintended\sfor\suse\sin\s32-bit\sembedded\nsystems,\swe\sare\snot\sgoing\sto\schange\sthat.\s(CVS\s4978)
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D 2008-04-10T14:57:25
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F Makefile.arm-wince-mingw32ce-gcc ac5f7b2cef0cd850d6f755ba6ee4ab961b1fadf7
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F Makefile.in b861627d91df5ee422c54237aa38296954dc0151
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F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
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@ -108,7 +108,7 @@ F src/main.c afcd42ba14d144034ed0e285bee100594f00b8fa
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F src/malloc.c 12c1ae98ef1eff34b13c9eb526e0b7b479e1e820
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F src/md5.c c5fdfa5c2593eaee2e32a5ce6c6927c986eaf217
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F src/mem1.c fc716ff521b6dd3e43eaa211967383308800e70a
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F src/mem2.c 84f7ac94dbf55b9ecec85980e74c6f3a87da795d
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F src/mem2.c 3656205111208a847e21d81a1d5b09a010164096
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F src/mem3.c 52547678a2ae50c203d54be1a5bf51eb02438a3f
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F src/mem4.c 45c328ec6dcb7e8d319cb383615b5fe547ca5409
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F src/mem5.c 11d98b76f77873aab86b543cbd1a8ddc4e680d58
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@ -179,7 +179,7 @@ F src/vdbe.c 444ab9ecc91f3c04b2b29ae604458426aa674fa6
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F src/vdbe.h f72201a0657d5f3d6cc008d1f8d9cc65768518c9
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F src/vdbeInt.h 0b96efdeecb0803e504bf1c16b198f87c91d6019
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F src/vdbeapi.c ab6e99f8a6b7fcb82c2c698da7a36762a7593f0a
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F src/vdbeaux.c 519ec819a8e549d087899f0c9a912afcdda762b4
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F src/vdbeaux.c 0aa2d8ede6bdb4379c36491c14d9779221bf196d
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F src/vdbeblob.c cc713c142c3d4952b380c98ee035f850830ddbdb
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F src/vdbefifo.c a30c237b2a3577e1415fb6e288cbb6b8ed1e5736
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F src/vdbemem.c 095e18f84b3171a5f2d71fa93a4bfc64220c1cfe
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@ -626,7 +626,7 @@ 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 55591fc49c8ab8146c1f3eff733e637501bff627
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R eb917bb84cf56955a047ec767653c982
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U danielk1977
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Z 1f007475942ab467fd58433a4982bf4d
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P d9a6b653d3cb608610f13d2492fe9b3887acb3b9
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R 5abecbe6fddd99e44f6149cafd5e65bd
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U drh
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Z cb5f0994d8c7c4628b79acd85cbbd54d
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@ -1 +1 @@
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d9a6b653d3cb608610f13d2492fe9b3887acb3b9
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d11e8e307af906db75ae7aede790464fabd06422
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12
src/mem2.c
12
src/mem2.c
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@ -12,7 +12,7 @@
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** This file contains the C functions that implement a memory
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** allocation subsystem for use by SQLite.
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**
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** $Id: mem2.c,v 1.25 2008/04/03 10:13:01 danielk1977 Exp $
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** $Id: mem2.c,v 1.26 2008/04/10 14:57:25 drh Exp $
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*/
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#include "sqliteInt.h"
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@ -48,8 +48,8 @@
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** MemBlockHdr.
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*/
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struct MemBlockHdr {
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i64 iSize; /* Size of this allocation */
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struct MemBlockHdr *pNext, *pPrev; /* Linked list of all unfreed memory */
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int iSize; /* Size of this allocation */
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char nBacktrace; /* Number of backtraces on this alloc */
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char nBacktraceSlots; /* Available backtrace slots */
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short nTitle; /* Bytes of title; includes '\0' */
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@ -218,7 +218,7 @@ static struct MemBlockHdr *sqlite3MemsysGetHeader(void *pAllocation){
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p = (struct MemBlockHdr*)pAllocation;
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p--;
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assert( p->iForeGuard==FOREGUARD );
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nReserve = (p->iSize+3)&~3;
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nReserve = (p->iSize+7)&~7;
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pInt = (int*)pAllocation;
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pU8 = (u8*)pAllocation;
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assert( pInt[nReserve/sizeof(int)]==REARGUARD );
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@ -258,7 +258,7 @@ void *sqlite3_malloc(int nByte){
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if( mem.alarmCallback!=0 && mem.nowUsed+nByte>=mem.alarmThreshold ){
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sqlite3MemsysAlarm(nByte);
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}
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nReserve = (nByte+3)&~3;
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nReserve = (nByte+7)&~7;
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if( nReserve/8>NCSIZE-1 ){
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mem.sizeCnt[NCSIZE-1]++;
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}else{
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@ -413,7 +413,7 @@ void sqlite3MemdebugSettitle(const char *zTitle){
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if( n>=sizeof(mem.zTitle) ) n = sizeof(mem.zTitle)-1;
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memcpy(mem.zTitle, zTitle, n);
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mem.zTitle[n] = 0;
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mem.nTitle = (n+3)&~3;
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mem.nTitle = (n+7)&~7;
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sqlite3_mutex_leave(mem.mutex);
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}
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@ -444,7 +444,7 @@ void sqlite3MemdebugDump(const char *zFilename){
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for(pHdr=mem.pFirst; pHdr; pHdr=pHdr->pNext){
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char *z = (char*)pHdr;
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z -= pHdr->nBacktraceSlots*sizeof(void*) + pHdr->nTitle;
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fprintf(out, "**** %d bytes at %p from %s ****\n",
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fprintf(out, "**** %lld bytes at %p from %s ****\n",
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pHdr->iSize, &pHdr[1], pHdr->nTitle ? z : "???");
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if( pHdr->nBacktrace ){
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fflush(out);
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@ -2065,6 +2065,9 @@ int sqlite3VdbeSerialGet(
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u32 serial_type, /* Serial type to deserialize */
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Mem *pMem /* Memory cell to write value into */
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){
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#ifndef SQLITE_MEMORY_SIZE
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assert( (7&(int)pMem)==0 ); /* Verify 8-byte alignment. Ticket #3040 */
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#endif
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switch( serial_type ){
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case 10: /* Reserved for future use */
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case 11: /* Reserved for future use */
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u32 szHdr;
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Mem *pMem;
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nByte = sizeof(*p) + sizeof(Mem)*(pKeyInfo->nField+1);
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assert( sizeof(Mem)>sizeof(*p) );
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nByte = sizeof(Mem)*(pKeyInfo->nField+2);
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if( nByte>szSpace ){
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p = sqlite3DbMallocRaw(pKeyInfo->db, nByte);
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if( p==0 ) return 0;
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p->pKeyInfo = pKeyInfo;
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p->nField = pKeyInfo->nField + 1;
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p->needDestroy = 1;
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p->aMem = pMem = (Mem*)&p[1];
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p->aMem = pMem = &((Mem*)p)[1];
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idx = GetVarint(aKey, szHdr);
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d = szHdr;
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i = 0;
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