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#ifndef OPENPOSE_THREAD_QUEUE_BASE_HPP
#define OPENPOSE_THREAD_QUEUE_BASE_HPP
#include <condition_variable>
#include <mutex>
#include <queue> // std::queue & std::priority_queue
#include <openpose/core/common.hpp>
namespace op
{
template<typename TDatums, typename TQueue>
class QueueBase
{
public:
explicit QueueBase(const long long maxSize = -1);
virtual ~QueueBase();
bool forceEmplace(TDatums& tDatums);
bool tryEmplace(TDatums& tDatums);
bool waitAndEmplace(TDatums& tDatums);
bool forcePush(const TDatums& tDatums);
bool tryPush(const TDatums& tDatums);
bool waitAndPush(const TDatums& tDatums);
bool tryPop(TDatums& tDatums);
bool tryPop();
bool waitAndPop(TDatums& tDatums);
bool waitAndPop();
bool empty() const;
void stop();
void stopPusher();
void addPopper();
void addPusher();
bool isRunning() const;
size_t size() const;
void clear();
virtual TDatums front() const = 0;
protected:
mutable std::mutex mMutex;
long long mPoppers;
long long mPushers;
long long mMaxPoppersPushers;
bool mPopIsStopped;
bool mPushIsStopped;
std::condition_variable mConditionVariable;
TQueue mTQueue;
virtual bool pop(TDatums& tDatums) = 0;
unsigned long long getMaxSize() const;
private:
const long long mMaxSize;
bool emplace(TDatums& tDatums);
bool push(const TDatums& tDatums);
bool pop();
void updateMaxPoppersPushers();
DELETE_COPY(QueueBase);
};
}
// Implementation
#include <openpose/core/datum.hpp>
#include <openpose/utilities/fastMath.hpp>
namespace op
{
template<typename TDatums, typename TQueue>
QueueBase<TDatums, TQueue>::QueueBase(const long long maxSize) :
mPoppers{0ll},
mPushers{0ll},
mPopIsStopped{false},
mPushIsStopped{false},
mMaxSize{maxSize}
{
}
// Virutal destructor
template<typename TDatums, typename TQueue>
QueueBase<TDatums, TQueue>::~QueueBase()
{
try
{
log("", Priority::Low, __LINE__, __FUNCTION__, __FILE__);
stop();
log("", Priority::Low, __LINE__, __FUNCTION__, __FILE__);
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
}
}
template<typename TDatums, typename TQueue>
bool QueueBase<TDatums, TQueue>::forceEmplace(TDatums& tDatums)
{
try
{
const std::lock_guard<std::mutex> lock{mMutex};
if (mTQueue.size() >= getMaxSize())
mTQueue.pop();
return emplace(tDatums);
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
return false;
}
}
template<typename TDatums, typename TQueue>
bool QueueBase<TDatums, TQueue>::tryEmplace(TDatums& tDatums)
{
try
{
const std::lock_guard<std::mutex> lock{mMutex};
if (mTQueue.size() >= getMaxSize())
return false;
return emplace(tDatums);
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
return false;
}
}
template<typename TDatums, typename TQueue>
bool QueueBase<TDatums, TQueue>::waitAndEmplace(TDatums& tDatums)
{
try
{
std::unique_lock<std::mutex> lock{mMutex};
mConditionVariable.wait(lock, [this]{return mTQueue.size() < getMaxSize() || mPushIsStopped; });
return emplace(tDatums);
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
return false;
}
}
template<typename TDatums, typename TQueue>
bool QueueBase<TDatums, TQueue>::forcePush(const TDatums& tDatums)
{
try
{
const std::lock_guard<std::mutex> lock{mMutex};
if (mTQueue.size() >= getMaxSize())
mTQueue.pop();
return push(tDatums);
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
return false;
}
}
template<typename TDatums, typename TQueue>
bool QueueBase<TDatums, TQueue>::tryPush(const TDatums& tDatums)
{
try
{
const std::lock_guard<std::mutex> lock{mMutex};
if (mTQueue.size() >= getMaxSize())
return false;
return push(tDatums);
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
return false;
}
}
template<typename TDatums, typename TQueue>
bool QueueBase<TDatums, TQueue>::waitAndPush(const TDatums& tDatums)
{
try
{
std::unique_lock<std::mutex> lock{mMutex};
mConditionVariable.wait(lock, [this]{return mTQueue.size() < getMaxSize() || mPushIsStopped; });
return push(tDatums);
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
return false;
}
}
template<typename TDatums, typename TQueue>
bool QueueBase<TDatums, TQueue>::tryPop(TDatums& tDatums)
{
try
{
const std::lock_guard<std::mutex> lock{mMutex};
return pop(tDatums);
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
return false;
}
}
template<typename TDatums, typename TQueue>
bool QueueBase<TDatums, TQueue>::tryPop()
{
try
{
const std::lock_guard<std::mutex> lock{mMutex};
return pop();
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
return false;
}
}
template<typename TDatums, typename TQueue>
bool QueueBase<TDatums, TQueue>::waitAndPop(TDatums& tDatums)
{
try
{
std::unique_lock<std::mutex> lock{mMutex};
mConditionVariable.wait(lock, [this]{return !mTQueue.empty() || mPopIsStopped; });
return pop(tDatums);
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
return false;
}
}
template<typename TDatums, typename TQueue>
bool QueueBase<TDatums, TQueue>::waitAndPop()
{
try
{
std::unique_lock<std::mutex> lock{mMutex};
mConditionVariable.wait(lock, [this]{return !mTQueue.empty() || mPopIsStopped; });
return pop();
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
return false;
}
}
template<typename TDatums, typename TQueue>
bool QueueBase<TDatums, TQueue>::empty() const
{
try
{
const std::lock_guard<std::mutex> lock{mMutex};
return mTQueue.empty();
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
return false;
}
}
template<typename TDatums, typename TQueue>
void QueueBase<TDatums, TQueue>::stop()
{
try
{
log("", Priority::Low, __LINE__, __FUNCTION__, __FILE__);
const std::lock_guard<std::mutex> lock{mMutex};
mPopIsStopped = {true};
mPushIsStopped = {true};
while (!mTQueue.empty())
mTQueue.pop();
mConditionVariable.notify_all();
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
}
}
template<typename TDatums, typename TQueue>
void QueueBase<TDatums, TQueue>::stopPusher()
{
try
{
log("", Priority::Low, __LINE__, __FUNCTION__, __FILE__);
const std::lock_guard<std::mutex> lock{mMutex};
mPushers--;
if (mPushers == 0)
{
mPushIsStopped = {true};
if (mTQueue.empty())
mPopIsStopped = {true};
mConditionVariable.notify_all();
}
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
}
}
template<typename TDatums, typename TQueue>
void QueueBase<TDatums, TQueue>::addPopper()
{
try
{
log("", Priority::Low, __LINE__, __FUNCTION__, __FILE__);
const std::lock_guard<std::mutex> lock{mMutex};
mPoppers++;
updateMaxPoppersPushers();
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
}
}
template<typename TDatums, typename TQueue>
void QueueBase<TDatums, TQueue>::addPusher()
{
try
{
log("", Priority::Low, __LINE__, __FUNCTION__, __FILE__);
const std::lock_guard<std::mutex> lock{mMutex};
mPushers++;
updateMaxPoppersPushers();
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
}
}
template<typename TDatums, typename TQueue>
bool QueueBase<TDatums, TQueue>::isRunning() const
{
try
{
const std::lock_guard<std::mutex> lock{mMutex};
return !(mPushIsStopped && (mPopIsStopped || mTQueue.empty()));
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
return true;
}
}
template<typename TDatums, typename TQueue>
size_t QueueBase<TDatums, TQueue>::size() const
{
try
{
const std::lock_guard<std::mutex> lock{mMutex};
return mTQueue.size();
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
return 0;
}
}
template<typename TDatums, typename TQueue>
void QueueBase<TDatums, TQueue>::clear()
{
try
{
const std::lock_guard<std::mutex> lock{mMutex};
while (!mTQueue.empty())
mTQueue.pop();
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
}
}
template<typename TDatums, typename TQueue>
unsigned long long QueueBase<TDatums, TQueue>::getMaxSize() const
{
try
{
return (mMaxSize > 0 ? mMaxSize : fastMax(1ll, mMaxPoppersPushers));
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
return false;
}
}
template<typename TDatums, typename TQueue>
bool QueueBase<TDatums, TQueue>::emplace(TDatums& tDatums)
{
try
{
if (mPushIsStopped)
return false;
mTQueue.emplace(tDatums);
mConditionVariable.notify_all();
return true;
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
return false;
}
}
template<typename TDatums, typename TQueue>
bool QueueBase<TDatums, TQueue>::push(const TDatums& tDatums)
{
try
{
if (mPushIsStopped)
return false;
mTQueue.push(tDatums);
mConditionVariable.notify_all();
return true;
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
return false;
}
}
template<typename TDatums, typename TQueue>
bool QueueBase<TDatums, TQueue>::pop()
{
try
{
if (mPopIsStopped || mTQueue.empty())
return false;
mTQueue.pop();
mConditionVariable.notify_all();
return true;
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
return false;
}
}
template<typename TDatums, typename TQueue>
void QueueBase<TDatums, TQueue>::updateMaxPoppersPushers()
{
try
{
mMaxPoppersPushers = fastMax(mPoppers, mPushers);
}
catch (const std::exception& e)
{
error(e.what(), __LINE__, __FUNCTION__, __FILE__);
}
}
extern template class QueueBase<DATUM_BASE, std::queue<DATUM_BASE>>;
extern template class QueueBase<DATUM_BASE, std::priority_queue<DATUM_BASE, std::vector<DATUM_BASE>, std::greater<DATUM_BASE>>>;
}
#endif // OPENPOSE_THREAD_QUEUE_BASE_HPP
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