diff options
| author | Yuri Kunde Schlesner <yuriks@yuriks.net> | 2017-02-19 14:34:47 -0800 |
|---|---|---|
| committer | Yuri Kunde Schlesner <yuriks@yuriks.net> | 2017-02-26 17:22:03 -0800 |
| commit | c75ae6c585f651a1b7c162c2e1ecccd22a1c587d (patch) | |
| tree | 30d51f39c6b57244e1ede29820c3f5d98ca38451 /src/core/perf_stats.cpp | |
| parent | 21f4f49c7aebbd3c716a4065a6d5b2c94c022008 (diff) | |
Add performance statistics to status bar
Diffstat (limited to 'src/core/perf_stats.cpp')
| -rw-r--r-- | src/core/perf_stats.cpp | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/core/perf_stats.cpp b/src/core/perf_stats.cpp new file mode 100644 index 0000000000..6d9e603e4e --- /dev/null +++ b/src/core/perf_stats.cpp @@ -0,0 +1,53 @@ +// Copyright 2017 Citra Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include <chrono> +#include "core/hw/gpu.h" +#include "core/perf_stats.h" + +namespace Core { + +void PerfStats::BeginSystemFrame() { + frame_begin = Clock::now(); +} + +void PerfStats::EndSystemFrame() { + auto frame_end = Clock::now(); + accumulated_frametime += frame_end - frame_begin; + system_frames += 1; +} + +void PerfStats::EndGameFrame() { + game_frames += 1; +} + +PerfStats::Results PerfStats::GetAndResetStats(u64 current_system_time_us) { + using DoubleSecs = std::chrono::duration<double, std::chrono::seconds::period>; + using std::chrono::duration_cast; + + auto now = Clock::now(); + // Walltime elapsed since stats were reset + auto interval = duration_cast<DoubleSecs>(now - reset_point).count(); + + auto system_us_per_second = + static_cast<double>(current_system_time_us - reset_point_system_us) / interval; + + Results results{}; + results.system_fps = static_cast<double>(system_frames) / interval; + results.game_fps = static_cast<double>(game_frames) / interval; + results.frametime = duration_cast<DoubleSecs>(accumulated_frametime).count() / + static_cast<double>(system_frames); + results.emulation_speed = system_us_per_second / 1'000'000.0; + + // Reset counters + reset_point = now; + reset_point_system_us = current_system_time_us; + accumulated_frametime = Clock::duration::zero(); + system_frames = 0; + game_frames = 0; + + return results; +} + +} // namespace Core |