projects / dragonfly.git / blame
| Commit | Line | Data |
|---|---|---|
| 71b3fa15 DX |
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. | |
| d3b15642 | 13 | * 3. Neither the name of the author nor the names of any co-contributors |
| 71b3fa15 DX |
14 | * may be used to endorse or promote products derived from this software |
| 15 | * without specific prior written permission. | |
| 16 | * | |
| 17 | * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND | |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
| 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 | * | |
| 71b3fa15 | 29 | */ |
| 9e2ee207 | 30 | |
| fc71f871 | 31 | #include "namespace.h" |
| 9e2ee207 | 32 | #include <machine/tls.h> |
| 71b3fa15 DX |
33 | #include <errno.h> |
| 34 | #include <pthread.h> | |
| fc71f871 DX |
35 | #include <pthread_np.h> |
| 36 | #include "un-namespace.h" | |
| 6be5672c | 37 | |
| 71b3fa15 DX |
38 | #include "thr_private.h" |
| 39 | ||
| 940be950 | 40 | static void resume_common(pthread_t thread); |
| 71b3fa15 DX |
41 | |
| 42 | /* Resume a thread: */ | |
| 43 | int | |
| 44 | _pthread_resume_np(pthread_t thread) | |
| 45 | { | |
| 940be950 | 46 | pthread_t curthread = tls_get_curthread(); |
| 71b3fa15 DX |
47 | int ret; |
| 48 | ||
| 49 | /* Add a reference to the thread: */ | |
| 50 | if ((ret = _thr_ref_add(curthread, thread, /*include dead*/0)) == 0) { | |
| 51 | /* Lock the threads scheduling queue: */ | |
| 52 | THR_THREAD_LOCK(curthread, thread); | |
| 53 | resume_common(thread); | |
| 54 | THR_THREAD_UNLOCK(curthread, thread); | |
| 55 | _thr_ref_delete(curthread, thread); | |
| 56 | } | |
| 57 | return (ret); | |
| 58 | } | |
| 59 | ||
| 60 | void | |
| 61 | _pthread_resume_all_np(void) | |
| 62 | { | |
| 940be950 | 63 | pthread_t curthread = tls_get_curthread(); |
| 64 | pthread_t thread; | |
| 71b3fa15 DX |
65 | |
| 66 | /* Take the thread list lock: */ | |
| 67 | THREAD_LIST_LOCK(curthread); | |
| 68 | ||
| 69 | TAILQ_FOREACH(thread, &_thread_list, tle) { | |
| 70 | if (thread != curthread) { | |
| 71 | THR_THREAD_LOCK(curthread, thread); | |
| 72 | resume_common(thread); | |
| 73 | THR_THREAD_UNLOCK(curthread, thread); | |
| 74 | } | |
| 75 | } | |
| 76 | ||
| 77 | /* Release the thread list lock: */ | |
| 78 | THREAD_LIST_UNLOCK(curthread); | |
| 79 | } | |
| 80 | ||
| 81 | static void | |
| 940be950 | 82 | resume_common(pthread_t thread) |
| 71b3fa15 DX |
83 | { |
| 84 | /* Clear the suspend flag: */ | |
| 85 | thread->flags &= ~THR_FLAGS_NEED_SUSPEND; | |
| 86 | thread->cycle++; | |
| 87 | _thr_umtx_wake(&thread->cycle, 1); | |
| 71b3fa15 | 88 | } |
| 5a1048c8 DX |
89 | |
| 90 | __strong_reference(_pthread_resume_np, pthread_resume_np); | |
| 91 | __strong_reference(_pthread_resume_all_np, pthread_resume_all_np); |