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Overview
| Comment: | test_async.c: Writer-thread should not relinquish mutex when writing a file for which only one file handle is open (fixes bug introduced in (3093)). (CVS 3097) |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | f0c45b7eab219ee812dbd2eb5e1c39fd |
| User & Date: | danielk1977 2006-02-14 14:46:42 |
Context
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2006-02-15
| ||
| 02:00 | Update the configure script to use AC_HELP_STRING. (CVS 3098) check-in: 92be79de user: drh tags: trunk | |
|
2006-02-14
| ||
| 14:46 | test_async.c: Writer-thread should not relinquish mutex when writing a file for which only one file handle is open (fixes bug introduced in (3093)). (CVS 3097) check-in: f0c45b7e user: danielk1977 tags: trunk | |
| 14:02 | Account for a malloc failure in the asynchronous writer thread in test_async.c (CVS 3096) check-in: 2f2a8a69 user: danielk1977 tags: trunk | |
Changes
Changes to src/test_async.c.
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static int asyncRead(OsFile *id, void *obuf, int amt){
int rc = SQLITE_OK;
i64 filesize;
int nRead;
AsyncFile *pFile = (AsyncFile *)id;
OsFile *pBase = pFile->pBaseRead;
if( !pBase ){
pBase = pFile->pBaseWrite;
}
/* If an I/O error has previously occurred on this file, then all
** subsequent operations fail.
*/
if( async.ioError!=SQLITE_OK ){
return async.ioError;
}
................................................................................
/* Read the filesystem size from the base file. If pBaseRead is NULL, this
** means the file hasn't been opened yet. In this case all relevant data
** must be in the write-op queue anyway, so we can omit reading from the
** file-system.
*/
pBase = ((AsyncFile *)id)->pBaseRead;
if( !pBase ){
pBase = ((AsyncFile *)id)->pBaseWrite;
}
if( pBase ){
rc = sqlite3OsFileSize(pBase, &s);
}
if( rc==SQLITE_OK ){
AsyncWrite *p;
for(p=async.pQueueFirst; p; p = p->pNext){
................................................................................
TRACE(("OPEN %s delFlag=%d\n", p->zBuf, delFlag));
assert(pFile->pBaseRead==0 && pFile->pBaseWrite==0);
rc = xOrigOpenExclusive(p->zBuf, &pBase, delFlag);
assert( holdingMutex==0 );
pthread_mutex_lock(&async.queueMutex);
holdingMutex = 1;
if( rc==SQLITE_OK ){
pFile->pBaseWrite = pBase;
}
break;
}
default: assert(!"Illegal value for AsyncWrite.op");
}
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static int asyncRead(OsFile *id, void *obuf, int amt){
int rc = SQLITE_OK;
i64 filesize;
int nRead;
AsyncFile *pFile = (AsyncFile *)id;
OsFile *pBase = pFile->pBaseRead;
/* If an I/O error has previously occurred on this file, then all
** subsequent operations fail.
*/
if( async.ioError!=SQLITE_OK ){
return async.ioError;
}
................................................................................
/* Read the filesystem size from the base file. If pBaseRead is NULL, this
** means the file hasn't been opened yet. In this case all relevant data
** must be in the write-op queue anyway, so we can omit reading from the
** file-system.
*/
pBase = ((AsyncFile *)id)->pBaseRead;
if( pBase ){
rc = sqlite3OsFileSize(pBase, &s);
}
if( rc==SQLITE_OK ){
AsyncWrite *p;
for(p=async.pQueueFirst; p; p = p->pNext){
................................................................................
TRACE(("OPEN %s delFlag=%d\n", p->zBuf, delFlag));
assert(pFile->pBaseRead==0 && pFile->pBaseWrite==0);
rc = xOrigOpenExclusive(p->zBuf, &pBase, delFlag);
assert( holdingMutex==0 );
pthread_mutex_lock(&async.queueMutex);
holdingMutex = 1;
if( rc==SQLITE_OK ){
pFile->pBaseRead = pBase;
}
break;
}
default: assert(!"Illegal value for AsyncWrite.op");
}
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