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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <sys/types.h>
#include <tuple>
#include <unistd.h>
#include <memory>
#include <drm/msm_drm.h>
#include <drm/msm_drm_pp.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <array>
#include <deque>
#include <mutex>
#include <utils/Timers.h>
namespace histogram {
struct TimeKeeper {
virtual nsecs_t current_time() const = 0;
virtual ~TimeKeeper() = default;
protected:
TimeKeeper() = default;
TimeKeeper& operator=(TimeKeeper const&) = delete;
TimeKeeper(TimeKeeper const&) = delete;
};
struct DefaultTimeKeeper final : TimeKeeper
{
nsecs_t current_time() const final;
};
class Ringbuffer
{
public:
static std::unique_ptr<Ringbuffer> create(size_t ringbuffer_size, std::unique_ptr<TimeKeeper> tk);
void insert(drm_msm_hist const& frame);
bool resize(size_t ringbuffer_size);
using Sample = std::tuple<uint64_t /* numFrames */, std::array<uint64_t, HIST_V_SIZE> /* bins */>;
Sample collect_cumulative() const;
Sample collect_ringbuffer_all() const;
Sample collect_after(nsecs_t timestamp) const;
Sample collect_max(uint32_t max_frames) const;
Sample collect_max_after(nsecs_t timestamp, uint32_t max_frames) const;
~Ringbuffer() = default;
private:
Ringbuffer(size_t ringbuffer_size, std::unique_ptr<TimeKeeper> tk);
Ringbuffer(Ringbuffer const&) = delete;
Ringbuffer& operator=(Ringbuffer const&) = delete;
Sample collect_max(uint32_t max_frames, std::unique_lock<std::mutex> const&) const;
Sample collect_max_after(nsecs_t timestamp, uint32_t max_frames, std::unique_lock<std::mutex> const&) const;
void update_cumulative(nsecs_t now, uint64_t& count, std::array<uint64_t, HIST_V_SIZE>& bins) const;
std::mutex mutable mutex;
struct HistogramEntry {
drm_msm_hist histogram;
nsecs_t start_timestamp;
nsecs_t end_timestamp;
};
std::deque<HistogramEntry> ringbuffer;
size_t rb_max_size;
std::unique_ptr<TimeKeeper> const timekeeper;
uint64_t cumulative_frame_count;
std::array<uint64_t, HIST_V_SIZE> cumulative_bins;
};
}
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