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