void Ext::DefaultCpuDispatcher::submitTask(PxBaseTask& task)
{
if(!mNumThreads)
{
// no worker threads, run directly
task.runProfiled();
task.release();
return;
}
Ps::Thread::Id currentThread = Ps::Thread::getId();
// TODO: Could use TLS to make this more efficient
for(PxU32 i = 0; i < mNumThreads; ++i)
{
if(mWorkerThreads[i].tryAcceptJobToLocalQueue(task, currentThread))
return mWorkReady.set();
}
SharedQueueEntry* entry = mQueueEntryPool.getEntry(&task);
if (entry)
{
mJobList.push(*entry);
mWorkReady.set();
}
}
void Ext::CpuWorkerThread::execute()
{
mThreadId = getId();
while (!quitIsSignalled())
{
mOwner->resetWakeSignal();
PxBaseTask* task = TaskQueueHelper::fetchTask(mLocalJobList, mQueueEntryPool);
if(!task)
task = mOwner->fetchNextTask();
if (task)
{
mOwner->runTask(*task);
task->release();
}
else
{
mOwner->waitForWork();
}
}
quit();
}
void Ext::DefaultCpuDispatcher::runTask(PxBaseTask& task)
{
#ifdef PX_PROFILE
task.runProfiled();
#else
task.run();
#endif
}
virtual void release()
{
// We used to do Task::release(); here before fixing DE1106 (xbox pure virtual crash)
// Release in turn causes the dependent tasks to start running
// The problem was that between the time release was called and by the time we got to the destructor
// The task chain would get all the way to scene finalization code which would reset the allocation pool
// And a new task would get allocated at the same address, then we would invoke the destructor on that freshly created task
// This could potentially cause any number of other problems, it is suprising that it only manifested itself
// as a pure virtual crash
PxBaseTask* saveContinuation = mCont;
this->~PxsCMUpdateTask();
if (saveContinuation)
saveContinuation->removeReference();
}
void CpuWorkerThread::execute()
{
mThreadId = getId();
while (!quitIsSignalled())
{
mOwner->resetWakeSignal();
PxBaseTask* task = TaskQueueHelper::fetchTask(mLocalJobList, mQueueEntryPool);
if (!task)
{
task = mOwner->getJob();
}
if (!task)
{
task = mOwner->stealJob();
}
if (task)
{
#if PHYSX_PROFILE_SDK
if (mPvdBinding!=NULL)
{
task->runProfiled();
}
else
{
task->run();
}
#else
task->run();
#endif
task->release();
}
else
{
mOwner->waitForWork();
}
}
quit();
};
/*
* \brief Called by dispatcher after Task has been run.
*
* If you re-implement this method, you must call this base class
* version before returning.
*/
void FetchResultsTask::release()
{
PxTask::release();
// copy mFollowingTask into local variable, because it might be overwritten
// as soon as mFetchResultsReady.set() is called (and before removeReference() is called on it)
PxBaseTask* followingTask = mFollowingTask;
mFollowingTask = NULL;
// Allow ApexScene::fetchResults() to run (potentially unblocking game thread)
mScene->mFetchResultsReady.set();
// remove reference to the scene completion task submitted in Scene::simulate
// this must be done after the scene's mFetchResultsReady event is set so that the
// app's completion task can be assured that fetchResults is ready to run
if (followingTask)
{
followingTask->removeReference();
}
}
void FPhysXCPUDispatcherSingleThread::submitTask( PxBaseTask& Task )
{
SCOPE_CYCLE_COUNTER(STAT_PhysXSingleThread);
check(IsInGameThread());
TaskStack.Push(&Task);
if (TaskStack.Num() > 1)
{
return;
}
Task.run();
Task.release();
while (TaskStack.Num() > 1)
{
PxBaseTask& ChildTask = *TaskStack.Pop();
ChildTask.run();
ChildTask.release();
}
verify(&Task == TaskStack.Pop() && !TaskStack.Num());
}
void PxTaskMgr::emitStopEvent(PxBaseTask& basetask, uint32_t threadId)
{
PxBaseTask* tmp = &basetask;
PX_UNUSED(tmp);
PX_UNUSED(threadId);
/* This does not need a lock! */
#if PX_SUPPORT_PXTASK_PROFILING
//PX_COMPILE_TIME_ASSERT(sizeof(PxProfileEventId::mEventId) == sizeof(PxBaseTask::mEventID));
PX_PROFILE_STOP_CROSSTHREAD(basetask.getName(),0);
#endif
}
