diff options
Diffstat (limited to 'lib/libkse/thread/thr_suspend_np.c')
-rw-r--r-- | lib/libkse/thread/thr_suspend_np.c | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/lib/libkse/thread/thr_suspend_np.c b/lib/libkse/thread/thr_suspend_np.c deleted file mode 100644 index 99af59c..0000000 --- a/lib/libkse/thread/thr_suspend_np.c +++ /dev/null @@ -1,112 +0,0 @@ -/* - * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au>. - * 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. Neither the name of the author nor the names of any co-contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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. - * - * $FreeBSD$ - */ - -#include "namespace.h" -#include <errno.h> -#include <pthread.h> -#include "un-namespace.h" -#include "thr_private.h" - -int _pthread_suspend_np(pthread_t thread); -void _pthread_suspend_all_np(void); - -static void suspend_common(struct pthread *thread); - -__weak_reference(_pthread_suspend_np, pthread_suspend_np); -__weak_reference(_pthread_suspend_all_np, pthread_suspend_all_np); - -/* Suspend a thread: */ -int -_pthread_suspend_np(pthread_t thread) -{ - struct pthread *curthread = _get_curthread(); - int ret; - - /* Suspending the current thread doesn't make sense. */ - if (thread == _get_curthread()) - ret = EDEADLK; - - /* Add a reference to the thread: */ - else if ((ret = _thr_ref_add(curthread, thread, /*include dead*/0)) - == 0) { - /* Lock the threads scheduling queue: */ - THR_SCHED_LOCK(curthread, thread); - suspend_common(thread); - /* Unlock the threads scheduling queue: */ - THR_SCHED_UNLOCK(curthread, thread); - - /* Don't forget to remove the reference: */ - _thr_ref_delete(curthread, thread); - } - return (ret); -} - -void -_pthread_suspend_all_np(void) -{ - struct pthread *curthread = _get_curthread(); - struct pthread *thread; - kse_critical_t crit; - - /* Take the thread list lock: */ - crit = _kse_critical_enter(); - KSE_LOCK_ACQUIRE(curthread->kse, &_thread_list_lock); - - TAILQ_FOREACH(thread, &_thread_list, tle) { - if (thread != curthread) { - THR_SCHED_LOCK(curthread, thread); - suspend_common(thread); - THR_SCHED_UNLOCK(curthread, thread); - } - } - - /* Release the thread list lock: */ - KSE_LOCK_RELEASE(curthread->kse, &_thread_list_lock); - _kse_critical_leave(crit); -} - -void -suspend_common(struct pthread *thread) -{ - if ((thread->state != PS_DEAD) && - (thread->state != PS_DEADLOCK) && - ((thread->flags & THR_FLAGS_EXITING) == 0)) { - thread->flags |= THR_FLAGS_SUSPENDED; - if ((thread->flags & THR_FLAGS_IN_RUNQ) != 0) { - THR_RUNQ_REMOVE(thread); - THR_SET_STATE(thread, PS_SUSPENDED); - } -#ifdef NOT_YET - if ((thread->attr.flags & PTHREAD_SCOPE_SYSTEM) != 0) - /* ??? */ -#endif - } -} |