home *** CD-ROM | disk | FTP | other *** search
- /*
- * Sync_SlowLock.c --
- *
- * Source code for the Sync_SlowLock library procedure.
- *
- * Copyright 1988 Regents of the University of California
- * Permission to use, copy, modify, and distribute this
- * software and its documentation for any purpose and without
- * fee is hereby granted, provided that the above copyright
- * notice appear in all copies. The University of California
- * makes no representations about the suitability of this
- * software for any purpose. It is provided "as is" without
- * express or implied warranty.
- */
-
- #ifndef lint
- static char rcsid[] = "$Header: Sync_SlowLock.c,v 1.3 88/07/25 11:12:00 ouster Exp $ SPRITE (Berkeley)";
- #endif not lint
-
- #include <sprite.h>
- #include <status.h>
- #include <stdio.h>
- #include <sync.h>
-
-
- /*
- * ----------------------------------------------------------------------------
- *
- * Sync_SlowLock --
- *
- * Aquire a lock. This is the second level lock routine. Sync_GetLock
- * has already been called and it discovered that the lock is already
- * held by someone else. This routine performs the system call to
- * go into the kernel and go through the slower locking procedure.
- *
- * Results:
- * SUCCESS.
- *
- * Side effects:
- * Lock aquired on exit.
- *
- * ----------------------------------------------------------------------------
- */
- ReturnStatus
- Sync_SlowLock(lockPtr)
- Sync_Lock *lockPtr;
- {
- ReturnStatus status;
-
- do {
- status = Sync_SlowLockStub(lockPtr);
- } while (status == GEN_ABORTED_BY_SIGNAL);
- if (status != SUCCESS) {
- panic("Sync_SlowLock: Could not aquire lock\n");
- }
- return(SUCCESS);
- }
-