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Overview
Comment:Fix a comment in os_unix.c. No code changes.
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Timelines: family | ancestors | descendants | both | experimental-mmap
Files: files | file ages | folders
SHA1: 72813b8ec924b91583c679668f7c4561dff82a02
User & Date: drh 2013-03-26 18:48:11.374
Context
2013-04-01
14:29
Fix a problem in btree.c that could cause a crash following an OOM. (check-in: b724aa5889 user: dan tags: experimental-mmap)
2013-03-26
18:48
Fix a comment in os_unix.c. No code changes. (check-in: 72813b8ec9 user: drh tags: experimental-mmap)
14:36
Change the name of the Pager.pFree field to Pager.pMmapFreelist. (check-in: 611bd824c2 user: drh tags: experimental-mmap)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/os_unix.c.
︙︙
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#if 0
  assert( pFile->pUnused==0
       || offset>=PENDING_BYTE+512
       || offset+amt<=PENDING_BYTE 
  );
#endif

  /* Deal with as much of this write request as possible by transfering
  ** data to the memory mapping using memcpy().  */
  if( offset<pFile->mmapSize ){
    if( offset+amt <= pFile->mmapSize ){
      memcpy(pBuf, &((u8 *)(pFile->pMapRegion))[offset], amt);
      return SQLITE_OK;
    }else{
      int nCopy = pFile->mmapSize - offset;
      memcpy(pBuf, &((u8 *)(pFile->pMapRegion))[offset], nCopy);








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3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118

#if 0
  assert( pFile->pUnused==0
       || offset>=PENDING_BYTE+512
       || offset+amt<=PENDING_BYTE 
  );
#endif

  /* Deal with as much of this read request as possible by transfering
  ** data from the memory mapping using memcpy().  */
  if( offset<pFile->mmapSize ){
    if( offset+amt <= pFile->mmapSize ){
      memcpy(pBuf, &((u8 *)(pFile->pMapRegion))[offset], amt);
      return SQLITE_OK;
    }else{
      int nCopy = pFile->mmapSize - offset;
      memcpy(pBuf, &((u8 *)(pFile->pMapRegion))[offset], nCopy);
︙︙