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#ifndef SWAPCHAIN_MONITOR_HH_
#define SWAPCHAIN_MONITOR_HH_
#include "atomic_time_point.hh"
#include "frame_span.hh"
#include "semaphore_signal.hh"
#include <vulkan/vulkan.h>
#include <chrono>
#include <condition_variable>
#include <memory>
#include <mutex>
#include <thread>
namespace low_latency {
class DeviceContext;
class SwapchainMonitor final {
private:
std::vector<std::unique_ptr<FrameSpan>> pending_frame_spans{};
struct PendingSignal {
SemaphoreSignal semaphore_signal;
std::vector<std::unique_ptr<FrameSpan>> frame_spans{};
};
std::deque<PendingSignal> pending_signals{};
protected:
const DeviceContext& device;
std::mutex mutex{};
std::chrono::microseconds present_delay{};
bool was_low_latency_requested{};
AtomicTimePoint last_signal_time{};
std::condition_variable_any cv{};
std::jthread monitor_worker{};
void do_monitor(const std::stop_token stoken);
public:
SwapchainMonitor(const DeviceContext& device);
SwapchainMonitor(const SwapchainMonitor&) = delete;
SwapchainMonitor(SwapchainMonitor&&) = delete;
SwapchainMonitor operator=(const SwapchainMonitor&) = delete;
SwapchainMonitor operator=(SwapchainMonitor&&) = delete;
~SwapchainMonitor();
public:
void update_params(const bool was_low_latency_requested,
const std::chrono::microseconds delay);
void notify_semaphore(const SemaphoreSignal& semaphore_signal);
void attach_work(std::vector<std::unique_ptr<FrameSpan>> submissions);
};
} // namespace low_latency
#endif
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