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Overview
| Comment: | Add a missing walIndexUnmap() to sqlite3WalSnapshotOpen(). |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | wal |
| Files: | files | file ages | folders |
| SHA1: |
72b95fde15dae56390dc8d4168fb2757 |
| User & Date: | dan 2010-04-30 09:32:06 |
Context
|
2010-04-30
| ||
| 09:52 | Fix a couple of assert() statements in os_unix.c and wal.c. Combine sqlite3WalIsDirty() with sqlite3WalUndo(). check-in: a8f958be user: dan tags: wal | |
| 09:32 | Add a missing walIndexUnmap() to sqlite3WalSnapshotOpen(). check-in: 72b95fde user: dan tags: wal | |
| 06:02 | Merge latest bugfix into wal branch. check-in: 265e66e6 user: dan tags: wal | |
Changes
Changes to src/os_unix.c.
5079 5080 5081 5082 5083 5084 5085 5086 5087 5088 5089 5090 5091 5092 5093 |
/*
** Query and/or changes the size of a shared-memory segment.
** The reqSize parameter is the new size of the segment, or -1 to
** do just a query. The size of the segment after resizing is
** written into pNewSize. A writer lock is held on the shared memory
** segment while resizing it.
**
** If ppBuffer is not NULL, the a reader lock is acquired no the shared
** memory segment and *ppBuffer is made to point to the start of the
** shared memory segment. xShmRelease() must be called to release the
** lock.
*/
static int unixShmSize(
sqlite3_shm *pSharedMem, /* Pointer returned by unixShmOpen() */
int reqSize, /* Requested size. -1 for query only */
|
| |
5079 5080 5081 5082 5083 5084 5085 5086 5087 5088 5089 5090 5091 5092 5093 |
/*
** Query and/or changes the size of a shared-memory segment.
** The reqSize parameter is the new size of the segment, or -1 to
** do just a query. The size of the segment after resizing is
** written into pNewSize. A writer lock is held on the shared memory
** segment while resizing it.
**
** If ppBuffer is not NULL, the a reader lock is acquired on the shared
** memory segment and *ppBuffer is made to point to the start of the
** shared memory segment. xShmRelease() must be called to release the
** lock.
*/
static int unixShmSize(
sqlite3_shm *pSharedMem, /* Pointer returned by unixShmOpen() */
int reqSize, /* Requested size. -1 for query only */
|
Changes to src/wal.c.
885 886 887 888 889 890 891 892 893 894 895 896 897 898 .... 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 .... 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 |
&& walIndexEntry(pWal->hdr.iLastPg)>=pWal->szWIndex
){
rc = walIndexRemap(pWal, 0);
assert( rc || walIndexEntry(pWal->hdr.iLastPg)<pWal->szWIndex );
}
}
}
return rc;
}
/*
** Unlock the current snapshot.
*/
void sqlite3WalCloseSnapshot(Wal *pWal){
................................................................................
u32 aCksum[2]; /* Checksums */
PgHdr *pLast; /* Last frame in list */
int nLast = 0; /* Number of extra copies of last page */
assert( WAL_FRAME_HDRSIZE==(4 * 2 + 2*sizeof(u32)) );
assert( pList );
assert( pWal->lockState==SQLITE_SHM_WRITE );
/* If this is the first frame written into the log, write the log
** header to the start of the log file. See comments at the top of
** this file for a description of the log-header format.
*/
assert( WAL_FRAME_HDRSIZE>=WAL_HDRSIZE );
iFrame = pWal->hdr.iLastPg;
................................................................................
}
rc = sqlite3OsSync(pWal->pFd, sync_flags);
if( rc!=SQLITE_OK ){
return rc;
}
}
/* Append data to the log summary. It is not necessary to lock the
** wal-index to do this as the RESERVED lock held on the db file
** guarantees that there are no other writers, and no data that may
** be in use by existing readers is being overwritten.
*/
iFrame = pWal->hdr.iLastPg;
|
> > > > |
885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 .... 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 .... 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 |
&& walIndexEntry(pWal->hdr.iLastPg)>=pWal->szWIndex
){
rc = walIndexRemap(pWal, 0);
assert( rc || walIndexEntry(pWal->hdr.iLastPg)<pWal->szWIndex );
}
}
}
walIndexUnmap(pWal);
return rc;
}
/*
** Unlock the current snapshot.
*/
void sqlite3WalCloseSnapshot(Wal *pWal){
................................................................................
u32 aCksum[2]; /* Checksums */
PgHdr *pLast; /* Last frame in list */
int nLast = 0; /* Number of extra copies of last page */
assert( WAL_FRAME_HDRSIZE==(4 * 2 + 2*sizeof(u32)) );
assert( pList );
assert( pWal->lockState==SQLITE_SHM_WRITE );
assert( pWal->pWiData==0 );
/* If this is the first frame written into the log, write the log
** header to the start of the log file. See comments at the top of
** this file for a description of the log-header format.
*/
assert( WAL_FRAME_HDRSIZE>=WAL_HDRSIZE );
iFrame = pWal->hdr.iLastPg;
................................................................................
}
rc = sqlite3OsSync(pWal->pFd, sync_flags);
if( rc!=SQLITE_OK ){
return rc;
}
}
assert( pWal->pWiData==0 );
/* Append data to the log summary. It is not necessary to lock the
** wal-index to do this as the RESERVED lock held on the db file
** guarantees that there are no other writers, and no data that may
** be in use by existing readers is being overwritten.
*/
iFrame = pWal->hdr.iLastPg;
|