Tractable - A lightweight C++ tracing library

Disclaimer: This library is very much WIP and everything might change with every commit.

Dependencies

• [optional] googletest for unit tests
• [optional] google-benchmark for micro-benchmarks

Features

Span Tracing

void functionToTrace() {
    trbl::Trace t{"Func"};
    someLongCalculation();
}

Counters

Local counter

Example:

void func() {
    trbl::Counter counter{"#Iterations"};
    for (size_t i = 0; i < 1000; ++i) counter.increment();
}

Static counter

Example:

void func() {
    static trbl::Counter counter{"#Iterations"};
    for (size_t i = 0; i < 1000; ++i) counter.increment();
}

Per-thread counter

Example:

void func() {
    static thread_local trbl::Counter counter{"#Iterations"};
    for (size_t i = 0; i < 1000; ++i) counter.increment();
}

Events

How to use

Example

When using backends/ChromeTracingBackend.h, a json file will be written to the current working directory (Defaults to profile.json)

This file can be opened up in chrome using the tooling that is shipped with the browser: chrome://tracing

This will show a per-thread timeline of traced functions, counters and events