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