home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Sprite 1984 - 1993
/
Sprite 1984 - 1993.iso
/
src
/
lib
/
c
/
sync
/
Sync_SlowWait.c
< prev
next >
Wrap
C/C++ Source or Header
|
1991-03-14
|
2KB
|
62 lines
/*
* Sync_SlowWait.c --
*
* Source code for the Sync_SlowWait 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: /sprite/src/lib/c/sync/RCS/Sync_SlowWait.c,v 1.2 91/03/14 12:16:01 kupfer Exp $ SPRITE (Berkeley)";
#endif not lint
#include <sprite.h>
#include <sync.h>
/*
* ----------------------------------------------------------------------------
*
* Sync_SlowWait --
*
* Wait on a condition. Set waiting flag and perform system call to
* release the monitor lock and do the wait. Reaquire the lock before
* returning.
*
* Results:
* TRUE if interrupted because of signal, FALSE otherwise.
*
* Side effects:
* Put the process to sleep and release the monitor lock.
*
* ----------------------------------------------------------------------------
*/
Boolean
Sync_SlowWait(conditionPtr, lockPtr, wakeIfSignal)
Sync_Condition *conditionPtr; /* Condition to wait on. */
register Sync_Lock *lockPtr; /* Lock to release. */
Boolean wakeIfSignal; /* TRUE => wake if signal pending. */
{
ReturnStatus status;
if (!lockPtr->inUse) {
panic("Sync_SlowWait: monitor lock not held");
}
conditionPtr->waiting = TRUE;
status = Sync_SlowWaitStub(conditionPtr, lockPtr, wakeIfSignal);
Sync_GetLock(lockPtr);
return(status);
}