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/* ==== pthread_kill.c =======================================================
* Copyright (c) 1994 by Chris Provenzano, proven@mit.edu
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Chris Provenzano.
* 4. The name of Chris Provenzano may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL CHRIS PROVENZANO BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Description : pthread_kill function.
*
* 1.32 94/06/12 proven
* -Started coding this file.
*/
#ifndef lint
static const char rcsid[] = "$Id$";
#endif
#include <pthread.h>
/* Defined in sig.c, a linked list of threads currently
* blocked in sigwait(): */
extern struct pthread * pthread_sigwait;
/* ==========================================================================
* pthread_kill()
*/
int pthread_kill(struct pthread * pthread, int sig)
{
struct pthread ** pthread_ptr;
pthread_sched_prevent();
/* Check who is the current owner of pthread */
/* if (pthread->kthread != pthread_run->kthread) { */
if (0) {
} else {
if (pthread->state == PS_SIGWAIT) {
if(sigismember(pthread->data.sigwait, sig)) {
for (pthread_ptr = &pthread_sigwait;
(*pthread_ptr);
pthread_ptr = &((*pthread_ptr)->next)) {
if ((*pthread_ptr) == pthread) {
/* Take the thread out of the
* pthread_sigwait linked list: */
*pthread_ptr=(*pthread_ptr)->next;
*(int *)(pthread->ret) = sig;
pthread_sched_other_resume(pthread);
return(OK);
}
}
/* A thread should not be in the state PS_SIGWAIT
* without being in the pthread_sigwait linked
* list: */
PANIC();
}
}
if (!sigismember(&pthread->sigpending,sig)) /* Added by monty */
{
sigaddset(&(pthread->sigpending), sig);
pthread->sigcount++;
}
}
pthread_sched_resume();
return(OK);
}
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