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/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
#include "hsThread.h"
#include "hsExceptions.h"
extern "C" {
static OSStatus gEntryPoint(void* param)
{
return ((hsThread*)param)->Run();
}
}
hsThread::hsThread(UInt32 stackSize) : fTaskId(0), fStackSize(stackSize), fQuit(false)
{
if (MPLibraryIsLoaded() == false)
throw "MPLibraryIsLoaded() returned false";
}
hsThread::~hsThread()
{
this->Stop();
}
void hsThread::Start()
{
if (fTaskId == 0)
{ OSStatus status = ::MPCreateQueue(&fNotifyQ);
hsThrowIfOSErr(status);
status = ::MPCreateTask(gEntryPoint, this, fStackSize, fNotifyQ, nil, nil, 0, &fTaskId);
if (status)
{ ::MPDeleteQueue(fNotifyQ);
throw hsOSException(status);
}
}
else
hsDebugMessage("Calling hsThread::Start() more than once", 0);
}
void hsThread::Stop()
{
if (fTaskId)
{ this->fQuit = true;
OSStatus status = ::MPTerminateTask(fTaskId, 0);
hsThrowIfOSErr(status);
// Wait for the task to tell us that its actually quit
status = ::MPWaitOnQueue(fNotifyQ, nil, nil, nil, kDurationForever);
hsThrowIfOSErr(status);
status = ::MPDeleteQueue(fNotifyQ);
hsThrowIfOSErr(status);
fTaskId = 0;
}
}
//////////////////////////////////////////////////////////////////////////////
void* hsThread::Alloc(size_t size)
{
return ::MPAllocate(size);
}
void hsThread::Free(void* p)
{
if (p)
::MPFree(p);
}
void hsThread::ThreadYield()
{
::MPYield();
}
//////////////////////////////////////////////////////////////////////////////
hsMutex::hsMutex()
{
OSStatus status = ::MPCreateCriticalRegion(&fCriticalRegion);
hsThrowIfOSErr(status);
}
hsMutex::~hsMutex()
{
OSStatus status = ::MPDeleteCriticalRegion(fCriticalRegion);
hsThrowIfOSErr(status);
}
void hsMutex::Lock()
{
OSStatus status = ::MPEnterCriticalRegion(fCriticalRegion, kDurationForever);
hsThrowIfOSErr(status);
}
void hsMutex::Unlock()
{
OSStatus status = ::MPExitCriticalRegion(fCriticalRegion);
hsThrowIfOSErr(status);
}
//////////////////////////////////////////////////////////////////////////////
hsSemaphore::hsSemaphore(int initialValue)
{
OSStatus status = MPCreateSemaphore(kPosInfinity32, initialValue, &fSemaId);
hsThrowIfOSErr(status);
}
hsSemaphore::~hsSemaphore()
{
OSStatus status = MPDeleteSemaphore(fSemaId);
hsThrowIfOSErr(status);
}
hsBool hsSemaphore::Wait(hsMilliseconds timeToWait)
{
Duration duration;
if (timeToWait == kPosInfinity32)
duration = kDurationForever;
else
duration = 0; // THEY DON'T IMPLEMENT delay times yet !!!
OSStatus status = MPWaitOnSemaphore(fSemaId, duration);
/*
if (status == kMPTimeoutErr)
return false;
*/
hsThrowIfOSErr(status);
return true;
}
void hsSemaphore::Signal()
{
OSStatus status = MPSignalSemaphore(fSemaId);
hsThrowIfOSErr(status);
}