1/* 2 * Copyright (c) 1995-1998 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 --- 12 unchanged lines hidden (view full) --- 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * |
29 * $FreeBSD: head/lib/libthr/thread/thr_suspend_np.c 212536 2010-09-13 07:03:01Z davidxu $ |
30 */ 31 32#include "namespace.h" 33#include <errno.h> 34#include <pthread.h> 35#include <pthread_np.h> 36#include "un-namespace.h" 37 --- 33 unchanged lines hidden (view full) --- 71 72void 73_pthread_suspend_all_np(void) 74{ 75 struct pthread *curthread = _get_curthread(); 76 struct pthread *thread; 77 int ret; 78 |
79 THREAD_LIST_RDLOCK(curthread); |
80 81 TAILQ_FOREACH(thread, &_thread_list, tle) { 82 if (thread != curthread) { 83 THR_THREAD_LOCK(curthread, thread); 84 if (thread->state != PS_DEAD && 85 !(thread->flags & THR_FLAGS_SUSPENDED)) 86 thread->flags |= THR_FLAGS_NEED_SUSPEND; 87 THR_THREAD_UNLOCK(curthread, thread); 88 } 89 } 90 thr_kill(-1, SIGCANCEL); 91 92restart: 93 TAILQ_FOREACH(thread, &_thread_list, tle) { 94 if (thread != curthread) { 95 /* First try to suspend the thread without waiting */ 96 THR_THREAD_LOCK(curthread, thread); 97 ret = suspend_common(curthread, thread, 0); 98 if (ret == 0) { |
99 THREAD_LIST_UNLOCK(curthread); |
100 /* Can not suspend, try to wait */ 101 THR_REF_ADD(curthread, thread); |
102 suspend_common(curthread, thread, 1); |
103 THR_REF_DEL(curthread, thread); 104 _thr_try_gc(curthread, thread); 105 /* thread lock released */ 106 107 THREAD_LIST_RDLOCK(curthread); |
108 /* 109 * Because we were blocked, things may have 110 * been changed, we have to restart the 111 * process. 112 */ 113 goto restart; 114 } 115 THR_THREAD_UNLOCK(curthread, thread); --- 8 unchanged lines hidden (view full) --- 124 int waitok) 125{ 126 long tmp; 127 128 while (thread->state != PS_DEAD && 129 !(thread->flags & THR_FLAGS_SUSPENDED)) { 130 thread->flags |= THR_FLAGS_NEED_SUSPEND; 131 tmp = thread->cycle; |
132 _thr_send_sig(thread, SIGCANCEL); |
133 THR_THREAD_UNLOCK(curthread, thread); |
134 if (waitok) { 135 _thr_umtx_wait_uint(&thread->cycle, tmp, NULL, 0); 136 THR_THREAD_LOCK(curthread, thread); 137 } else { 138 THR_THREAD_LOCK(curthread, thread); 139 return (0); 140 } 141 } 142 143 return (1); 144} |