lib/sqlite/sqlite3.c

45114 static const char *walLockName(int lockIdx){
45115   if( lockIdx==WAL_WRITE_LOCK ){
45117   }else if( lockIdx==WAL_CKPT_LOCK ){
45119   }else if( lockIdx==WAL_RECOVER_LOCK ){
45124                      lockIdx-WAL_READ_LOCK(0));
45138 static int walLockShared(Wal *pWal, int lockIdx){
45141   rc = sqlite3OsShmLock(pWal->pDbFd, lockIdx, 1,
45144             walLockName(lockIdx), rc ? "failed" : "ok"));
45148 static void walUnlockShared(Wal *pWal, int lockIdx){
45150   (void)sqlite3OsShmLock(pWal->pDbFd, lockIdx, 1,
45152   WALTRACE(("WAL%p: release SHARED-%s\n", pWal, walLockName(lockIdx)));
45154 static int walLockExclusive(Wal *pWal, int lockIdx, int n){
45157   rc = sqlite3OsShmLock(pWal->pDbFd, lockIdx, n,
45160             walLockName(lockIdx), n, rc ? "failed" : "ok"));
45164 static void walUnlockExclusive(Wal *pWal, int lockIdx, int n){
45166   (void)sqlite3OsShmLock(pWal->pDbFd, lockIdx, n,
45169              walLockName(lockIdx), n));
45952 ** Attempt to obtain the exclusive WAL lock defined by parameters lockIdx and
45961   int lockIdx,                    /* Offset of first byte to lock */
45966     rc = walLockExclusive(pWal, lockIdx, n);