56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
#pragma once
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#include "SystemFrameTypes.h"
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#include <chrono>
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#include <condition_variable>
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#include <deque>
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#include <mutex>
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#include <vector>
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class SystemFrameExchange
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{
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public:
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SystemFrameExchange() = default;
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explicit SystemFrameExchange(const SystemFrameExchangeConfig& config);
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void Configure(const SystemFrameExchangeConfig& config);
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SystemFrameExchangeConfig Config() const;
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bool AcquireForRender(SystemFrame& frame);
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bool PublishCompleted(const SystemFrame& frame);
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bool ConsumeCompletedForSchedule(SystemFrame& frame);
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bool ReleaseScheduledByBytes(void* bytes);
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bool WaitForCompletedDepth(std::size_t targetDepth, std::chrono::milliseconds timeout);
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bool WaitForStableCompletedDepth(
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std::size_t targetDepth,
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std::chrono::milliseconds stableDuration,
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std::chrono::milliseconds timeout);
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void Clear();
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SystemFrameExchangeMetrics Metrics() const;
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private:
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struct Slot
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{
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std::vector<unsigned char> bytes;
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SystemFrameSlotState state = SystemFrameSlotState::Free;
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uint64_t generation = 1;
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uint64_t frameIndex = 0;
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};
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bool AcquireFreeLocked(SystemFrame& frame);
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bool DropOldestCompletedLocked();
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bool IsValidLocked(const SystemFrame& frame) const;
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void FillFrameLocked(std::size_t index, SystemFrame& frame);
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std::size_t CompletedCountLocked() const;
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std::size_t FrameByteCount() const;
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mutable std::mutex mMutex;
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std::condition_variable mCondition;
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SystemFrameExchangeConfig mConfig;
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std::vector<Slot> mSlots;
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std::deque<std::size_t> mCompletedIndices;
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SystemFrameExchangeMetrics mCounters;
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};
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