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#ifndef FWCore_Integration_WaitingServer_h
#define FWCore_Integration_WaitingServer_h
#include "FWCore/Concurrency/interface/WaitingTaskWithArenaHolder.h"
#include <atomic>
#include <condition_variable>
#include <memory>
#include <mutex>
#include <thread>
#include <vector>
namespace edmtest {
namespace test_acquire {
struct StreamData {
StreamData() : in_(nullptr), out_(nullptr) {}
std::vector<int> const* in_;
std::vector<int>* out_;
edm::WaitingTaskWithArenaHolder holder_;
};
class WaitingServer {
public:
WaitingServer(unsigned int iNumberOfStreams,
unsigned int iMinNumberOfStreamsBeforeDoingWork,
unsigned int iSecondsToWait)
: m_perStream(iNumberOfStreams),
m_minNumStreamsBeforeDoingWork(iMinNumberOfStreamsBeforeDoingWork),
m_secondsToWait(iSecondsToWait),
m_shouldStop(false) {}
void start();
void stop();
void requestValuesAsync(unsigned int dataID,
std::vector<int> const* iIn,
std::vector<int>* iOut,
edm::WaitingTaskWithArenaHolder holder);
private:
void serverDoWork();
bool readyForWork() const;
std::mutex m_mutex; //needed by m_cond
std::condition_variable m_cond;
std::unique_ptr<std::thread> m_thread;
std::vector<StreamData> m_perStream;
std::vector<unsigned int> m_waitingStreams;
const unsigned int m_minNumStreamsBeforeDoingWork;
const unsigned int m_secondsToWait;
std::atomic<bool> m_shouldStop;
};
class Cache {
public:
std::vector<int> const& retrieved() const { return m_retrieved; }
std::vector<int>& retrieved() { return m_retrieved; }
std::vector<int> const& processed() const { return m_processed; }
std::vector<int>& processed() { return m_processed; }
private:
std::vector<int> m_retrieved;
std::vector<int> m_processed;
};
} // namespace test_acquire
} // namespace edmtest
#endif
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