stopthread.c
1.31 KB
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/**************************************************************************
* *
* Copyright (C) 1994, Silicon Graphics, Inc. *
* *
* These coded instructions, statements, and computer programs contain *
* unpublished proprietary information of Silicon Graphics, Inc., and *
* are protected by Federal copyright law. They may not be disclosed *
* to third parties or copied or duplicated in any form, in whole or *
* in part, without the prior written consent of Silicon Graphics, Inc. *
* *
**************************************************************************/
#include "osint.h"
/*
* osStopThread
*
* Suspend the given thread by dequeueing it from its current queue.
* If the given thread is NULL, suspend the current thread.
*/
void
osStopThread(OSThread *t)
{
register u32 saveMask;
register u16 state;
/* Disable interrupts */
saveMask = __osDisableInt();
state = (u16)((t == (OSThread *) NULL) ? OS_STATE_RUNNING : t->state);
switch (state) {
case OS_STATE_RUNNING:
__osRunningThread->state = OS_STATE_STOPPED;
__osEnqueueAndYield((OSThread **)NULL);
break;
case OS_STATE_RUNNABLE:
case OS_STATE_WAITING:
t->state = OS_STATE_STOPPED;
__osDequeueThread(t->queue, t);
break;
}
/* Restore interrupts */
__osRestoreInt(saveMask);
}