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 "thr_private.h" 37 38 static void resume_common(struct pthread *); 39 40 __weak_reference(_pthread_resume_np, pthread_resume_np); 41 __weak_reference(_pthread_resume_all_np, pthread_resume_all_np); 42 43 /* Resume a thread: */ 44 int 45 _pthread_resume_np(pthread_t thread) 46 { 47 int ret; 48 49 /* Find the thread in the list of active threads: */ 50 if ((ret = _find_thread(thread)) == 0) { 51 GIANT_LOCK(curthread); 52 53 if ((thread->flags & PTHREAD_FLAGS_SUSPENDED) != 0) 54 resume_common(thread); 55 56 GIANT_UNLOCK(curthread); 57 } 58 return (ret); 59 } 60 61 void 62 _pthread_resume_all_np(void) 63 { 64 struct pthread *thread; 65 66 GIANT_LOCK(curthread); 67 68 TAILQ_FOREACH(thread, &_thread_list, tle) { 69 if ((thread != curthread) && 70 ((thread->flags & PTHREAD_FLAGS_SUSPENDED) != 0)) 71 resume_common(thread); 72 } 73 74 GIANT_UNLOCK(curthread); 75 } 76 77 static void 78 resume_common(struct pthread *thread) 79 { 80 thread->flags &= ~PTHREAD_FLAGS_SUSPENDED; 81 if (thr_kill(thread->thr_id, SIGTHR)) 82 abort(); 83 } 84