4500 static int unixLockSharedMemory(unixFile *pDbFd, unixShmNode *pShmNode){  in unixLockSharedMemory()  argument
4533       rc = unixShmSystemLock(pDbFd, F_WRLCK, UNIX_SHM_DMS, 1);  in unixLockSharedMemory()
4549     rc = unixShmSystemLock(pDbFd, F_RDLCK, UNIX_SHM_DMS, 1);  in unixLockSharedMemory()
4589 static int unixOpenSharedMemory(unixFile *pDbFd){  in unixOpenSharedMemory()  argument
4601   assert( pDbFd->pShm==0 );  in unixOpenSharedMemory()
4606   assert( unixFileMutexNotheld(pDbFd) );  in unixOpenSharedMemory()
4608   pInode = pDbFd->pInode;  in unixOpenSharedMemory()
4613     const char *zBasePath = pDbFd->zPath;  in unixOpenSharedMemory()
4620     if( osFstat(pDbFd->h, &sStat) ){  in unixOpenSharedMemory()
4643     sqlite3FileSuffix3(pDbFd->zPath, zShm);  in unixOpenSharedMemory()
4646     pDbFd->pInode->pShmNode = pShmNode;  in unixOpenSharedMemory()
4647     pShmNode->pInode = pDbFd->pInode;  in unixOpenSharedMemory()
4657       if( 0==sqlite3_uri_boolean(pDbFd->zPath, "readonly_shm", 0) ){  in unixOpenSharedMemory()
4677       rc = unixLockSharedMemory(pDbFd, pShmNode);  in unixOpenSharedMemory()
4688   pDbFd->pShm = p;  in unixOpenSharedMemory()
4706   unixShmPurge(pDbFd);       /* This call frees pShmNode if required */  in unixOpenSharedMemory()
4738   unixFile *pDbFd = (unixFile*)fd;  in unixShmMap()  local
4746   if( pDbFd->pShm==0 ){  in unixShmMap()
4747     rc = unixOpenSharedMemory(pDbFd);  in unixShmMap()
4751   p = pDbFd->pShm;  in unixShmMap()
4755     rc = unixLockSharedMemory(pDbFd, pShmNode);  in unixShmMap()
4760   assert( pShmNode->pInode==pDbFd->pInode );  in unixShmMap()
4761   assert( pShmNode->hShm>=0 || pDbFd->pInode->bProcessLock==1 );  in unixShmMap()
4762   assert( pShmNode->hShm<0 || pDbFd->pInode->bProcessLock==0 );  in unixShmMap()
4912   unixFile *pDbFd = (unixFile*)fd;      /* Connection holding shared memory */  in unixShmLock()  local
4919   p = pDbFd->pShm;  in unixShmLock()
4925   assert( pShmNode==pDbFd->pInode->pShmNode );  in unixShmLock()
4926   assert( pShmNode->pInode==pDbFd->pInode );  in unixShmLock()
4934   assert( pShmNode->hShm>=0 || pDbFd->pInode->bProcessLock==1 );  in unixShmLock()
4935   assert( pShmNode->hShm<0 || pDbFd->pInode->bProcessLock==0 );  in unixShmLock()
4951   assert( (flags & SQLITE_SHM_UNLOCK) || pDbFd->iBusyTimeout==0 || (  in unixShmLock()
4975         rc = unixShmSystemLock(pDbFd, F_UNLCK, ofst+UNIX_SHM_BASE, n);  in unixShmLock()
4997         rc = unixShmSystemLock(pDbFd, F_RDLCK, ofst+UNIX_SHM_BASE, n);  in unixShmLock()
5021       rc = unixShmSystemLock(pDbFd, F_WRLCK, ofst+UNIX_SHM_BASE, n);  in unixShmLock()
5070   unixFile *pDbFd;                /* The underlying database file */  in unixShmUnmap()  local
5072   pDbFd = (unixFile*)fd;  in unixShmUnmap()
5073   p = pDbFd->pShm;  in unixShmUnmap()
5077   assert( pShmNode==pDbFd->pInode->pShmNode );  in unixShmUnmap()
5078   assert( pShmNode->pInode==pDbFd->pInode );  in unixShmUnmap()
5088   pDbFd->pShm = 0;  in unixShmUnmap()
5093   assert( unixFileMutexNotheld(pDbFd) );  in unixShmUnmap()
5101     unixShmPurge(pDbFd);  in unixShmUnmap()