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Changes In Branch mmap-size-limit Excluding Merge-Ins
This is equivalent to a diff from 38f30091 to f08d63b4
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2017-08-07
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| 19:12 | Avoid casting a value larger than 2^31 to a (size_t) or (SIZE_T) on systems where it is a 32-bit type. (check-in: b26d7a1c user: dan tags: trunk) | |
| 19:06 | On Windows, avoid casting a value larger than 2^31 to a (SIZE_T) on systems where it is a 32-bit type. (Leaf check-in: f08d63b4 user: mistachkin tags: mmap-size-limit) | |
| 18:54 | Fix a problem with handling SQLITE_FCNTL_MMAP_SIZE requests with a negative parameter in os_unix.c. (check-in: 4249fcf7 user: dan tags: mmap-size-limit) | |
| 18:13 | Avoid casting a value larger than 2^31 to a (size_t) on systems where it is a 32-bit type. (check-in: 46c3085d user: dan tags: mmap-size-limit) | |
| 17:28 | Fix an out-of-order test number. (check-in: 38f30091 user: mistachkin tags: trunk) | |
| 17:14 | Add new test file "bigmmap.test". For testing builds with -DSQLITE_MAX_MMAP_SIZE > 2GB. (check-in: 17447062 user: dan tags: trunk) | |
Changes to src/os_unix.c.
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3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 | 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 | + + + + + + + + |
#if SQLITE_MAX_MMAP_SIZE>0
case SQLITE_FCNTL_MMAP_SIZE: {
i64 newLimit = *(i64*)pArg;
int rc = SQLITE_OK;
if( newLimit>sqlite3GlobalConfig.mxMmap ){
newLimit = sqlite3GlobalConfig.mxMmap;
}
/* The value of newLimit may be eventually cast to (size_t) and passed
** to mmap(). Restrict its value to 2GB if (size_t) is not at least a
** 64-bit type. */
if( newLimit>0 && sizeof(size_t)<8 ){
newLimit = (newLimit & 0x7FFFFFFF);
}
*(i64*)pArg = pFile->mmapSizeMax;
if( newLimit>=0 && newLimit!=pFile->mmapSizeMax && pFile->nFetchOut==0 ){
pFile->mmapSizeMax = newLimit;
if( pFile->mmapSize>0 ){
unixUnmapfile(pFile);
rc = unixMapfile(pFile, -1);
}
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Changes to src/os_win.c.
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3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 | 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 | + + + + + + + + |
#if SQLITE_MAX_MMAP_SIZE>0
case SQLITE_FCNTL_MMAP_SIZE: {
i64 newLimit = *(i64*)pArg;
int rc = SQLITE_OK;
if( newLimit>sqlite3GlobalConfig.mxMmap ){
newLimit = sqlite3GlobalConfig.mxMmap;
}
/* The value of newLimit may be eventually cast to (SIZE_T) and passed
** to MapViewOfFile(). Restrict its value to 2GB if (SIZE_T) is not at
** least a 64-bit type. */
if( newLimit>0 && sizeof(SIZE_T)<8 ){
newLimit = (newLimit & 0x7FFFFFFF);
}
*(i64*)pArg = pFile->mmapSizeMax;
if( newLimit>=0 && newLimit!=pFile->mmapSizeMax && pFile->nFetchOut==0 ){
pFile->mmapSizeMax = newLimit;
if( pFile->mmapSize>0 ){
winUnmapfile(pFile);
rc = winMapfile(pFile, -1);
}
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Changes to test/bigmmap.test.
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26 27 28 29 30 31 32 | 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | - + |
}
set mmap_limit 0
db eval {
SELECT compile_options AS x FROM pragma_compile_options
WHERE x LIKE 'max_mmap_size=%'
} {
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