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103 lines
2.3 KiB
C++
103 lines
2.3 KiB
C++
/*
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* Copyright (c) 2005, Eric Crahen
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is furnished
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* to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include "ThreadOps.h"
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#include "zthread/Exceptions.h"
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#include "zthread/Runnable.h"
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namespace ZThread {
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const ThreadOps ThreadOps::INVALID(0);
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ThreadOps::ThreadOps() : _queue(0), _tid(0) {
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if(MPCreateQueue(&_queue) != noErr)
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throw Initialization_Exception();
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}
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ThreadOps::~ThreadOps() throw() {
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if(_queue != 0) {
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OSStatus status = MPDeleteQueue(_queue);
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if(status != noErr)
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assert(0);
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}
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}
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bool ThreadOps::join(ThreadOps* ops) {
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assert(ops);
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assert(ops->_tid != 0);
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OSStatus status = MPWaitOnQueue(ops->_queue, NULL, NULL, NULL, kDurationForever);
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return status == noErr;
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}
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bool ThreadOps::yield() {
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MPYield();
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return true;
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}
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bool ThreadOps::setPriority(ThreadOps* impl, Priority p) {
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return true;
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}
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bool ThreadOps::getPriority(ThreadOps* impl, Priority& p) {
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return true;
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}
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bool ThreadOps::spawn(Runnable* task) {
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OSStatus status =
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MPCreateTask(&_dispatch, task, 0UL, _queue, NULL, NULL, 0UL, &_tid);
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return status == noErr;
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}
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OSStatus ThreadOps::_dispatch(void *arg) {
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Runnable* task = reinterpret_cast<Runnable*>(arg);
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assert(task);
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// Run the task from the correct context
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task->run();
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// Exit the thread
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MPExit(noErr);
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return noErr;
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}
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} // namespace ZThread
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