glw_profiler

Minimalistic profiler for C++ projects.

Header-only, cross-platform and compact profiler in 250 lines of code.

Usage

Just drop the headers (glw_profiler.h and glw_json.h) into your C++ project and include it into a source file

#include "glw_profiler.h"

License

Licensed under BSD.

How to build and run tests

git clone https://github.com/yak32/glw_profiler.git
cd glw_profiler
mkdir build
cd build
cmake ..
cmake --build . --target install
 ./../install/tests

(use Git Bash on Windows)

Prepare, view and analyze profiling results

• Instrument your code with GLW_PROFILE_FUNC macro
• Run your app
• Open chrome://tracing in Chrome
• Load json file with results of tracing

Example

#include "../glw_profiler.h"

using namespace glw_profiler;

Profiler profiler;

#define METHOD() GLW_PROFILE_FUNC(profiler, __FUNCTION__)

float func(){
	METHOD();
	float sum = 0;
	for(int i=0;i<100000;i++)
		sum += 2.0f;
	return sum;
}

int main(){
	profiler.start_profiling();

	func();

	profiler.stop_profiling();
	profiler.save_traces("traces.json");
	return 0;
}

Dependencies

C++ 11, standard library, glw_json (included)

Performance

Traces are collected in memory, saved after profiling into a json file. Size of a trace structure is 28 bytes (VS 2017, 32bit build)

Tests

Run cmake on CMakeLists.txt in tests folder.

Compartibility

Cross-platform C++11 code, tested on 3 platforms - Ubuntu, Windows and MacOS.