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Overview
| Comment: | Fix harmless compiler warning in unixUnfetch(). |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
618f248f4ea9fb0b6ff019a4c2cd7285 |
| User & Date: | drh 2014-01-09 13:39:07 |
Context
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2014-01-10
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| 16:40 | Fix another harmless compiler warning in unixUnfetch(). (check-in: 0484549b user: dan tags: trunk) | |
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2014-01-09
| ||
| 13:39 | Fix harmless compiler warning in unixUnfetch(). (check-in: 618f248f user: drh tags: trunk) | |
|
2014-01-04
| ||
| 20:00 | Fix an typo that breaks the build when SQLITE_ENABLE_TREE_EXPLAIN is defined. (check-in: f461e2b3 user: drh tags: trunk) | |
Changes
Changes to src/os_unix.c.
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** argument that was passed to the unixFetch() invocation.
**
** Or, if the third argument is NULL, then this function is being called
** to inform the VFS layer that, according to POSIX, any existing mapping
** may now be invalid and should be unmapped.
*/
static int unixUnfetch(sqlite3_file *fd, i64 iOff, void *p){
unixFile *pFd = (unixFile *)fd; /* The underlying database file */
UNUSED_PARAMETER(iOff);
#if SQLITE_MAX_MMAP_SIZE>0
/* If p==0 (unmap the entire file) then there must be no outstanding
** xFetch references. Or, if p!=0 (meaning it is an xFetch reference),
** then there must be at least one outstanding. */
assert( (p==0)==(pFd->nFetchOut==0) );
/* If p!=0, it must match the iOff value. */
assert( p==0 || p==&((u8 *)pFd->pMapRegion)[iOff] );
................................................................................
if( p ){
pFd->nFetchOut--;
}else{
unixUnmapfile(pFd);
}
assert( pFd->nFetchOut>=0 );
#endif
return SQLITE_OK;
}
/*
** Here ends the implementation of all sqlite3_file methods.
**
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** argument that was passed to the unixFetch() invocation.
**
** Or, if the third argument is NULL, then this function is being called
** to inform the VFS layer that, according to POSIX, any existing mapping
** may now be invalid and should be unmapped.
*/
static int unixUnfetch(sqlite3_file *fd, i64 iOff, void *p){
UNUSED_PARAMETER(iOff);
#if SQLITE_MAX_MMAP_SIZE>0
unixFile *pFd = (unixFile *)fd; /* The underlying database file */
/* If p==0 (unmap the entire file) then there must be no outstanding
** xFetch references. Or, if p!=0 (meaning it is an xFetch reference),
** then there must be at least one outstanding. */
assert( (p==0)==(pFd->nFetchOut==0) );
/* If p!=0, it must match the iOff value. */
assert( p==0 || p==&((u8 *)pFd->pMapRegion)[iOff] );
................................................................................
if( p ){
pFd->nFetchOut--;
}else{
unixUnmapfile(pFd);
}
assert( pFd->nFetchOut>=0 );
#else
UNUSED_PARAMETER(fd);
UNUSED_PARAMETER(p);
#endif
return SQLITE_OK;
}
/*
** Here ends the implementation of all sqlite3_file methods.
**
|