1 /* 2 * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by John Birrell. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD$ 33 */ 34 #include <errno.h> 35 #include <pthread.h> 36 #include <stdlib.h> 37 #include "thr_private.h" 38 39 static void resume_common(struct pthread *); 40 41 __weak_reference(_pthread_resume_np, pthread_resume_np); 42 __weak_reference(_pthread_resume_all_np, pthread_resume_all_np); 43 44 /* Resume a thread: */ 45 int 46 _pthread_resume_np(pthread_t thread) 47 { 48 int ret; 49 50 /* Find the thread in the list of active threads: */ 51 if ((ret = _find_thread(thread)) == 0) { 52 GIANT_LOCK(curthread); 53 54 if ((thread->flags & PTHREAD_FLAGS_SUSPENDED) != 0) 55 resume_common(thread); 56 57 GIANT_UNLOCK(curthread); 58 } 59 return (ret); 60 } 61 62 void 63 _pthread_resume_all_np(void) 64 { 65 struct pthread *thread; 66 67 GIANT_LOCK(curthread); 68 69 TAILQ_FOREACH(thread, &_thread_list, tle) { 70 if ((thread != curthread) && 71 ((thread->flags & PTHREAD_FLAGS_SUSPENDED) != 0)) 72 resume_common(thread); 73 } 74 75 GIANT_UNLOCK(curthread); 76 } 77 78 static void 79 resume_common(struct pthread *thread) 80 { 81 thread->flags &= ~PTHREAD_FLAGS_SUSPENDED; 82 if (thr_kill(thread->thr_id, SIGTHR)) 83 abort(); 84 } 85