Differential D16518 Diff 57855 source/blender/blenlib/BLI_timeit.hh

Changeset View

Standalone View

source/blender/blenlib/BLI_timeit.hh

/* SPDX-License-Identifier: GPL-2.0-or-later */		/* SPDX-License-Identifier: GPL-2.0-or-later */

#pragma once		#pragma once

#include <chrono>		#include <chrono>
#include <iostream>		#include <iostream>
#include <string>		#include <string>

#include "BLI_sys_types.h"		#include "BLI_sys_types.h"

		#include "BLI_vector.hh"

namespace blender::timeit {		namespace blender::timeit {

using Clock = std::chrono::steady_clock;		using Clock = std::chrono::steady_clock;
using TimePoint = Clock::time_point;		using TimePoint = Clock::time_point;
using Nanoseconds = std::chrono::nanoseconds;		using Nanoseconds = std::chrono::nanoseconds;

void print_duration(Nanoseconds duration);		void print_duration(Nanoseconds duration);

Show All 39 Lines	ScopedTimerAveraged(std::string name,
min_time_(min_time)		min_time_(min_time)
{		{
start_ = Clock::now();		start_ = Clock::now();
}		}

~ScopedTimerAveraged();		~ScopedTimerAveraged();
};		};

		template<typename KeyType = std::string> class ScopeTimerTable {
		private:
		const std::string name_;

		Vector<Vector<Nanoseconds>> timings_;
		Vector<KeyType> indefiers_;

		class Timer {
		private:
		const KeyType indefier_;
		const TimePoint start_;
		ScopeTimerTable &table_;

		public:
		Timer(ScopeTimerTable &table, KeyType indefier)
		: indefier_(std::move(indefier)), start_(Clock::now()), table_(table)
		{
		}

		~Timer()
		{
		const TimePoint end = Clock::now();
		const Nanoseconds duration = end - start_;
		const int64_t index = table_.indefiers_.append_non_duplicates_and_get_index(indefier_);
		Vector<Nanoseconds> &line = table_.timings_.last();
		line.reserve(index + 1);
		line[index] = duration;
		}
		};

		public:
		ScopeTimerTable(std::string name) : name_(std::move(name))
		{
		}

		~ScopeTimerTable()
		{
		this->print();
		}

		void new_row()
		{
		timings_.append(Vector<Nanoseconds>(indefiers_.size()));
		}

		Timer new_timer(KeyType key)
		{
		return Timer(*this, std::move(key));
		}

		protected:
		void print()
		{
		for (const KeyType key : indefiers_.as_span().drop_back(1)) {
		std::cout << key << "\t";
		}
		std::cout << indefiers_.last() << "\n";

		for (const int64_t line_i : timings_.index_range()) {
		const Span<Nanoseconds> colume = timings_[line_i];
		for (const int64_t key_i : indefiers_.index_range()) {
		if (colume.size() > key_i) {
		std::cout << colume[key_i].count();
		}
		std::cout << "\t";
		}
		std::cout << "\n";
		}

		std::cout << "\n";
		}
		};

} // namespace blender::timeit		} // namespace blender::timeit

#define SCOPED_TIMER(name) blender::timeit::ScopedTimer scoped_timer(name)		#define SCOPED_TIMER(name) blender::timeit::ScopedTimer scoped_timer(name)

/**		/**
* Print the average and minimum runtime of the timer's scope.		* Print the average and minimum runtime of the timer's scope.
* \warning This uses static variables, so it is not thread-safe.		* \warning This uses static variables, so it is not thread-safe.
*/		*/
#define SCOPED_TIMER_AVERAGED(name) \		#define SCOPED_TIMER_AVERAGED(name) \
static int64_t total_count_; \		static int64_t total_count_; \
static blender::timeit::Nanoseconds total_time_; \		static blender::timeit::Nanoseconds total_time_; \
static blender::timeit::Nanoseconds min_time_ = blender::timeit::Nanoseconds::max(); \		static blender::timeit::Nanoseconds min_time_ = blender::timeit::Nanoseconds::max(); \
blender::timeit::ScopedTimerAveraged scoped_timer(name, total_count_, total_time_, min_time_)		blender::timeit::ScopedTimerAveraged scoped_timer(name, total_count_, total_time_, min_time_)

		#define SCOPED_TIMER_TABLE(name) \
		static blender::timeit::ScopeTimerTable table##name("name"); \
		table##name.new_row(); \
		auto name##_add = [&](auto key) { return table##name.new_timer(key); }
		No newline at end of file