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The pcache and the built-in VFSes should not use mutexes when

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SQLITE_CONFIG_SINGLETHREAD is set.

FossilOrigin-Name: 12418b100196abbfbfb85e0ab4bb6b1cbf335df7
This commit is contained in:
drh
2016-04-26 18:58:54 +00:00
parent b283a0cde9
commit 97a7e5e68c
5 changed files with 25 additions and 21 deletions
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10
src/os_unix.c
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@@ -4288,10 +4288,12 @@ static int unixOpenSharedMemory(unixFile *pDbFd){
pShmNode->h = -1;
pDbFd->pInode->pShmNode = pShmNode;
pShmNode->pInode = pDbFd->pInode;
pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST);
if( pShmNode->mutex==0 ){
rc = SQLITE_NOMEM_BKPT;
goto shm_open_err;
if( sqlite3GlobalConfig.bCoreMutex ){
pShmNode->mutex = sqlite3_mutex_alloc(SQLITE_MUTEX_FAST);
if( pShmNode->mutex==0 ){
rc = SQLITE_NOMEM_BKPT;
goto shm_open_err;
}
}
if( pInode->bProcessLock==0 ){