1112918Sjeff/* 2112918Sjeff * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>. 3112918Sjeff * All rights reserved. 4112918Sjeff * 5112918Sjeff * Redistribution and use in source and binary forms, with or without 6112918Sjeff * modification, are permitted provided that the following conditions 7112918Sjeff * are met: 8112918Sjeff * 1. Redistributions of source code must retain the above copyright 9112918Sjeff * notice, this list of conditions and the following disclaimer. 10112918Sjeff * 2. Redistributions in binary form must reproduce the above copyright 11112918Sjeff * notice, this list of conditions and the following disclaimer in the 12112918Sjeff * documentation and/or other materials provided with the distribution. 13165967Simp * 3. Neither the name of the author nor the names of any co-contributors 14112918Sjeff * may be used to endorse or promote products derived from this software 15112918Sjeff * without specific prior written permission. 16112918Sjeff * 17112918Sjeff * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 18112918Sjeff * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19112918Sjeff * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20112918Sjeff * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21112918Sjeff * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22112918Sjeff * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23112918Sjeff * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24112918Sjeff * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25112918Sjeff * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26112918Sjeff * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27112918Sjeff * SUCH DAMAGE. 28112918Sjeff * 29112918Sjeff * $FreeBSD$ 30112918Sjeff */ 31144518Sdavidxu 32157457Sdavidxu#include "namespace.h" 33112918Sjeff#include <errno.h> 34112918Sjeff#include <pthread.h> 35157457Sdavidxu#include <pthread_np.h> 36157457Sdavidxu#include "un-namespace.h" 37144518Sdavidxu 38112918Sjeff#include "thr_private.h" 39112918Sjeff 40112918Sjeff__weak_reference(_pthread_resume_np, pthread_resume_np); 41112918Sjeff__weak_reference(_pthread_resume_all_np, pthread_resume_all_np); 42112918Sjeff 43144518Sdavidxustatic void resume_common(struct pthread *thread); 44144518Sdavidxu 45112918Sjeff/* Resume a thread: */ 46112918Sjeffint 47112918Sjeff_pthread_resume_np(pthread_t thread) 48112918Sjeff{ 49144518Sdavidxu struct pthread *curthread = _get_curthread(); 50112918Sjeff int ret; 51112918Sjeff 52144518Sdavidxu /* Add a reference to the thread: */ 53212536Sdavidxu if ((ret = _thr_find_thread(curthread, thread, /*include dead*/0)) == 0) { 54144518Sdavidxu /* Lock the threads scheduling queue: */ 55144518Sdavidxu resume_common(thread); 56144518Sdavidxu THR_THREAD_UNLOCK(curthread, thread); 57112918Sjeff } 58112918Sjeff return (ret); 59112918Sjeff} 60112918Sjeff 61112918Sjeffvoid 62112918Sjeff_pthread_resume_all_np(void) 63112918Sjeff{ 64144518Sdavidxu struct pthread *curthread = _get_curthread(); 65144518Sdavidxu struct pthread *thread; 66112918Sjeff 67144518Sdavidxu /* Take the thread list lock: */ 68212536Sdavidxu THREAD_LIST_RDLOCK(curthread); 69144518Sdavidxu 70112918Sjeff TAILQ_FOREACH(thread, &_thread_list, tle) { 71144518Sdavidxu if (thread != curthread) { 72144518Sdavidxu THR_THREAD_LOCK(curthread, thread); 73112918Sjeff resume_common(thread); 74144518Sdavidxu THR_THREAD_UNLOCK(curthread, thread); 75144518Sdavidxu } 76112918Sjeff } 77144518Sdavidxu 78144518Sdavidxu /* Release the thread list lock: */ 79144518Sdavidxu THREAD_LIST_UNLOCK(curthread); 80112918Sjeff} 81112918Sjeff 82112918Sjeffstatic void 83112918Sjeffresume_common(struct pthread *thread) 84112918Sjeff{ 85144518Sdavidxu /* Clear the suspend flag: */ 86144518Sdavidxu thread->flags &= ~THR_FLAGS_NEED_SUSPEND; 87144518Sdavidxu thread->cycle++; 88178647Sdavidxu _thr_umtx_wake(&thread->cycle, 1, 0); 89112918Sjeff} 90