Unify the result of PRAGMA mmap_size when mmap support is disabled.
FossilOrigin-Name: 032c31593d6f569842830cac6222362be68b2084
This commit is contained in:
mistachkin
parent
feb56e0e17
commit
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19
manifest
@ -1,5 +1,5 @@
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C Adjust\s#ifdefs\sto\sget\sSQLITE_OMIT_AUTOMATIC_INDEX\sand\sSQLITE_OMIT_PAGER_PRAGMAS\nto\sbuild.
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D 2013-08-23T17:33:46.203
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C Unify\sthe\sresult\sof\sPRAGMA\smmap_size\swhen\smmap\ssupport\sis\sdisabled.
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D 2013-08-24T00:59:24.722
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F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
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F Makefile.in 5e41da95d92656a5004b03d3576e8b226858a28e
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F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
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@ -202,7 +202,7 @@ F src/notify.c 976dd0f6171d4588e89e874fcc765e92914b6d30
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F src/os.c b4ad71336fd96f97776f75587cd9e8218288f5be
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F src/os.h 4a46270a64e9193af4a0aaa3bc2c66dc07c29b3f
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F src/os_common.h 92815ed65f805560b66166e3583470ff94478f04
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F src/os_unix.c 9eafa5458cf2ff684ddccff82c9bb113c7cad847
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F src/os_unix.c e767bca6caa9db1eabc7e0657e425952d3272464
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F src/os_win.c 1d84f2079d9b91f91a4b5dbfa5e08f1b1a0ed0ff
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F src/pager.c 2aa4444ffe86e9282d03bc349a4a5e49bd77c0e8
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F src/pager.h f094af9f6ececfaa8a1e93876905a4f34233fb0c
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@ -210,7 +210,7 @@ F src/parse.y 27c6b4138497d6f8360ba7847da6ed48033f957f
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F src/pcache.c f8043b433a57aba85384a531e3937a804432a346
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F src/pcache.h a5e4f5d9f5d592051d91212c5949517971ae6222
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F src/pcache1.c a467393909a4ed7ca9de066d85ba5c5b04a5be63
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F src/pragma.c dc9ceab9b361e3fbd461ebaa7fb8003233e20725
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F src/pragma.c 3aa3d8c8623b7b71c5b1bfb72dcc31fb0c25665f
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F src/prepare.c fa6988589f39af8504a61731614cd4f6ae71554f
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F src/printf.c da9119eb31a187a4b99f60aa4a225141c0ebb74b
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F src/random.c 0b2dbc37fdfbfa6bd455b091dfcef5bdb32dba68
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@ -1105,7 +1105,10 @@ F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
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F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
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F tool/wherecosttest.c f407dc4c79786982a475261866a161cd007947ae
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F tool/win/sqlite.vsix 97894c2790eda7b5bce3cc79cb2a8ec2fde9b3ac
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P 3ad1f998e5db044849b528c31c4a7e1f3d527320
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R 5a6ead2576f296902c1b2ccbdf985254
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U drh
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Z 27173a06b09c0a2f08350ebdebfa00ec
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P ed310201628cf79c0f57674ae7478ee6738b1c6e
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R bd8622b0fc71103f701b6641f54bb274
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T *branch * mmapDisabled
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T *sym-mmapDisabled *
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T -sym-trunk *
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U mistachkin
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Z 80111f228705ea035bb71c4b1488f527
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@ -1 +1 @@
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ed310201628cf79c0f57674ae7478ee6738b1c6e
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032c31593d6f569842830cac6222362be68b2084
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@ -218,11 +218,13 @@ struct unixFile {
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const char *zPath; /* Name of the file */
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unixShm *pShm; /* Shared memory segment information */
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int szChunk; /* Configured by FCNTL_CHUNK_SIZE */
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#if SQLITE_MAX_MMAP_SIZE>0
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int nFetchOut; /* Number of outstanding xFetch refs */
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sqlite3_int64 mmapSize; /* Usable size of mapping at pMapRegion */
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sqlite3_int64 mmapSizeActual; /* Actual size of mapping at pMapRegion */
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sqlite3_int64 mmapSizeMax; /* Configured FCNTL_MMAP_SIZE value */
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void *pMapRegion; /* Memory mapped region */
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#endif
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#ifdef __QNXNTO__
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int sectorSize; /* Device sector size */
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int deviceCharacteristics; /* Precomputed device characteristics */
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@ -1871,8 +1873,10 @@ static int unixUnlock(sqlite3_file *id, int eFileLock){
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return posixUnlock(id, eFileLock, 0);
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}
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#if SQLITE_MAX_MMAP_SIZE>0
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static int unixMapfile(unixFile *pFd, i64 nByte);
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static void unixUnmapfile(unixFile *pFd);
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#endif
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/*
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** This function performs the parts of the "close file" operation
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@ -1886,7 +1890,9 @@ static void unixUnmapfile(unixFile *pFd);
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*/
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static int closeUnixFile(sqlite3_file *id){
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unixFile *pFile = (unixFile*)id;
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#if SQLITE_MAX_MMAP_SIZE>0
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unixUnmapfile(pFile);
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#endif
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if( pFile->h>=0 ){
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robust_close(pFile, pFile->h, __LINE__);
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pFile->h = -1;
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@ -3590,6 +3596,7 @@ static int unixTruncate(sqlite3_file *id, i64 nByte){
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}
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#endif
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#if SQLITE_MAX_MMAP_SIZE>0
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/* If the file was just truncated to a size smaller than the currently
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** mapped region, reduce the effective mapping size as well. SQLite will
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** use read() and write() to access data beyond this point from now on.
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@ -3597,6 +3604,7 @@ static int unixTruncate(sqlite3_file *id, i64 nByte){
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if( nByte<pFile->mmapSize ){
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pFile->mmapSize = nByte;
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}
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#endif
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return SQLITE_OK;
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}
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@ -3686,6 +3694,7 @@ static int fcntlSizeHint(unixFile *pFile, i64 nByte){
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}
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}
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#if SQLITE_MAX_MMAP_SIZE>0
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if( pFile->mmapSizeMax>0 && nByte>pFile->mmapSize ){
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int rc;
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if( pFile->szChunk<=0 ){
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@ -3698,6 +3707,7 @@ static int fcntlSizeHint(unixFile *pFile, i64 nByte){
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rc = unixMapfile(pFile, nByte);
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return rc;
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}
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#endif
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return SQLITE_OK;
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}
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@ -3766,6 +3776,7 @@ static int unixFileControl(sqlite3_file *id, int op, void *pArg){
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}
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return SQLITE_OK;
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}
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#if SQLITE_MAX_MMAP_SIZE>0
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case SQLITE_FCNTL_MMAP_SIZE: {
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i64 newLimit = *(i64*)pArg;
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int rc = SQLITE_OK;
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@ -3782,6 +3793,7 @@ static int unixFileControl(sqlite3_file *id, int op, void *pArg){
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}
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return rc;
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}
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#endif
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#ifdef SQLITE_DEBUG
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/* The pager calls this method to signal that it has done
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** a rollback and that the database is therefore unchanged and
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@ -4592,22 +4604,20 @@ static int unixShmUnmap(
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# define unixShmUnmap 0
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#endif /* #ifndef SQLITE_OMIT_WAL */
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#if SQLITE_MAX_MMAP_SIZE>0
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/*
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** If it is currently memory mapped, unmap file pFd.
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*/
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static void unixUnmapfile(unixFile *pFd){
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assert( pFd->nFetchOut==0 );
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#if SQLITE_MAX_MMAP_SIZE>0
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if( pFd->pMapRegion ){
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osMunmap(pFd->pMapRegion, pFd->mmapSizeActual);
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pFd->pMapRegion = 0;
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pFd->mmapSize = 0;
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pFd->mmapSizeActual = 0;
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}
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#endif
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}
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#if SQLITE_MAX_MMAP_SIZE>0
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/*
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** Return the system page size.
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*/
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@ -4620,9 +4630,7 @@ static int unixGetPagesize(void){
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return (int)sysconf(_SC_PAGESIZE);
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#endif
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}
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#endif /* SQLITE_MAX_MMAP_SIZE>0 */
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#if SQLITE_MAX_MMAP_SIZE>0
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/*
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** Attempt to set the size of the memory mapping maintained by file
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** descriptor pFd to nNew bytes. Any existing mapping is discarded.
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@ -4707,7 +4715,6 @@ static void unixRemapfile(
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pFd->pMapRegion = (void *)pNew;
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pFd->mmapSize = pFd->mmapSizeActual = nNew;
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}
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#endif
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/*
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** Memory map or remap the file opened by file-descriptor pFd (if the file
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@ -4726,7 +4733,6 @@ static void unixRemapfile(
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** code otherwise.
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*/
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static int unixMapfile(unixFile *pFd, i64 nByte){
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#if SQLITE_MAX_MMAP_SIZE>0
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i64 nMap = nByte;
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int rc;
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@ -4752,10 +4758,10 @@ static int unixMapfile(unixFile *pFd, i64 nByte){
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unixUnmapfile(pFd);
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}
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}
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#endif
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return SQLITE_OK;
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}
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#endif /* SQLITE_MAX_MMAP_SIZE>0 */
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/*
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** If possible, return a pointer to a mapping of file fd starting at offset
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@ -661,7 +661,7 @@ void sqlite3Pragma(
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Pager *pPager = sqlite3BtreePager(pDb->pBt);
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i64 iLimit = -2;
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if( zRight ){
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sqlite3Atoi64(zRight, &iLimit, 1000000, SQLITE_UTF8);
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sqlite3Atoi64(zRight, &iLimit, sqlite3Strlen30(zRight), SQLITE_UTF8);
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if( iLimit<-1 ) iLimit = -1;
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}
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iLimit = sqlite3PagerJournalSizeLimit(pPager, iLimit);
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@ -795,10 +795,11 @@ void sqlite3Pragma(
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*/
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if( sqlite3StrICmp(zLeft,"mmap_size")==0 ){
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sqlite3_int64 sz;
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#if SQLITE_MAX_MMAP_SIZE>0
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assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
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if( zRight ){
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int ii;
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sqlite3Atoi64(zRight, &sz, 1000, SQLITE_UTF8);
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sqlite3Atoi64(zRight, &sz, sqlite3Strlen30(zRight), SQLITE_UTF8);
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if( sz<0 ) sz = sqlite3GlobalConfig.szMmap;
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if( pId2->n==0 ) db->szMmap = sz;
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for(ii=db->nDb-1; ii>=0; ii--){
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@ -809,8 +810,9 @@ void sqlite3Pragma(
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}
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sz = -1;
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rc = sqlite3_file_control(db, zDb, SQLITE_FCNTL_MMAP_SIZE, &sz);
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#if SQLITE_MAX_MMAP_SIZE==0
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#else
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sz = 0;
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rc = SQLITE_OK;
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#endif
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if( rc==SQLITE_OK ){
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returnSingleInt(pParse, "mmap_size", sz);
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