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/*
* Copyright (c) 2008-2017, NVIDIA CORPORATION. All rights reserved.
*
* NVIDIA CORPORATION and its licensors retain all intellectual property
* and proprietary rights in and to this software, related documentation
* and any modifications thereto. Any use, reproduction, disclosure or
* distribution of this software and related documentation without an express
* license agreement from NVIDIA CORPORATION is strictly prohibited.
*/
#include "JobManager.h"
#define _USE_MATH_DEFINES
#include <math.h>
#include <NvCloth/Solver.h>
void Job::Initialize(JobManager* parent, std::function<void(Job*)> function, int refcount)
{
mFunction = function;
mParent = parent;
Reset(refcount);
}
Job::Job(const Job& job)
{
mFunction = job.mFunction;
mParent = job.mParent;
mRefCount.store(job.mRefCount);
mFinished = job.mFinished;
}
void Job::Reset(int refcount)
{
mRefCount = refcount;
mFinished = false;
}
void Job::Execute()
{
if (mFunction)
mFunction(this);
else
ExecuteInternal();
mFinishedLock.lock();
mFinished = true;
mFinishedLock.unlock();
mFinishedEvent.notify_one();
}
void Job::AddReference()
{
mRefCount++;
}
void Job::RemoveReference()
{
if (0 == --mRefCount)
{
mParent->Submit(this);
}
}
void Job::Wait()
{
std::unique_lock<std::mutex> lock(mFinishedLock);
mFinishedEvent.wait(lock, [this](){return mFinished;} );
return;
}
void JobManager::WorkerEntryPoint(JobManager* parrent)
{
while (true)
{
Job* job;
{
std::unique_lock<std::mutex> lock(parrent->mJobQueueLock);
while (parrent->mJobQueue.size() == 0 && !parrent->mQuit)
parrent->mJobQueueEvent.wait(lock);
if (parrent->mQuit)
return;
job = parrent->mJobQueue.front();
parrent->mJobQueue.pop();
}
job->Execute();
}
}
void JobManager::Submit(Job* job)
{
mJobQueueLock.lock();
mJobQueue.push(job);
mJobQueueLock.unlock();
mJobQueueEvent.notify_one();
}
void MultithreadedSolverHelper::Initialize(nv::cloth::Solver* solver, JobManager* jobManager)
{
mSolver = solver;
mJobManager = jobManager;
mEndSimulationJob.Initialize(mJobManager, [this](Job*) {
mSolver->endSimulation();
});
mStartSimulationJob.Initialize(mJobManager, [this](Job*) {
mSolver->beginSimulation(mDt);
for(int j = 0; j < mSolver->getSimulationChunkCount(); j++)
mSimulationChunkJobs[j].RemoveReference();
});
}
void MultithreadedSolverHelper::StartSimulation(float dt)
{
mDt = dt;
if (mSolver->getSimulationChunkCount() != mSimulationChunkJobs.size())
{
mSimulationChunkJobs.resize(mSolver->getSimulationChunkCount(), Job());
for (int j = 0; j < mSolver->getSimulationChunkCount(); j++)
mSimulationChunkJobs[j].Initialize(mJobManager, [this, j](Job*) {mSolver->simulateChunk(j); mEndSimulationJob.RemoveReference(); });
}
else
{
for (int j = 0; j < mSolver->getSimulationChunkCount(); j++)
mSimulationChunkJobs[j].Reset();
}
mStartSimulationJob.Reset();
mEndSimulationJob.Reset(mSolver->getSimulationChunkCount());
mStartSimulationJob.RemoveReference();
}
void MultithreadedSolverHelper::WaitForSimulation()
{
if (mSolver->getSimulationChunkCount() == 0)
return;
mEndSimulationJob.Wait();
}
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