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Diffstat (limited to 'mit-pthreads/pthreads/pthread_kill.c')
| -rw-r--r-- | mit-pthreads/pthreads/pthread_kill.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/mit-pthreads/pthreads/pthread_kill.c b/mit-pthreads/pthreads/pthread_kill.c new file mode 100644 index 00000000000..9e3e61488a3 --- /dev/null +++ b/mit-pthreads/pthreads/pthread_kill.c @@ -0,0 +1,93 @@ +/* ==== 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); +} |