diff options
Diffstat (limited to 'lib/libc_r/uthread/uthread_suspend_np.c')
-rw-r--r-- | lib/libc_r/uthread/uthread_suspend_np.c | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/lib/libc_r/uthread/uthread_suspend_np.c b/lib/libc_r/uthread/uthread_suspend_np.c deleted file mode 100644 index 5892031..0000000 --- a/lib/libc_r/uthread/uthread_suspend_np.c +++ /dev/null @@ -1,101 +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 <errno.h> -#include <pthread.h> -#include "pthread_private.h" - -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) -{ - int ret; - - /* Suspending the current thread doesn't make sense. */ - if (thread == _get_curthread()) - ret = EDEADLK; - - /* Find the thread in the list of active threads: */ - else if ((ret = _find_thread(thread)) == 0) { - /* - * Defer signals to protect the scheduling queues from - * access by the signal handler: - */ - _thread_kern_sig_defer(); - - suspend_common(thread); - - /* - * Undefer and handle pending signals, yielding if - * necessary: - */ - _thread_kern_sig_undefer(); - } - return (ret); -} - -void -_pthread_suspend_all_np(void) -{ - struct pthread *curthread = _get_curthread(); - struct pthread *thread; - - /* - * Defer signals to protect the scheduling queues from - * access by the signal handler: - */ - _thread_kern_sig_defer(); - - TAILQ_FOREACH(thread, &_thread_list, tle) { - if (thread != curthread) - suspend_common(thread); - } - - /* - * Undefer and handle pending signals, yielding if - * necessary: - */ - _thread_kern_sig_undefer(); -} - -void -suspend_common(struct pthread *thread) -{ - thread->flags |= PTHREAD_FLAGS_SUSPENDED; - if (thread->flags & PTHREAD_FLAGS_IN_PRIOQ) { - PTHREAD_PRIOQ_REMOVE(thread); - PTHREAD_SET_STATE(thread, PS_SUSPENDED); - } -} |