#backtrace #printing #trace #runtime #stack

backtrace

A library to acquire a stack trace (backtrace) at runtime in a Rust program

72 releases

0.3.60 Jun 3, 2021
0.3.58 Apr 27, 2021
0.3.56 Jan 21, 2021
0.3.55 Nov 20, 2020
0.1.4 Jul 16, 2015
Download history 248944/week @ 2021-02-24 242293/week @ 2021-03-03 251715/week @ 2021-03-10 251580/week @ 2021-03-17 255035/week @ 2021-03-24 238395/week @ 2021-03-31 259059/week @ 2021-04-07 241546/week @ 2021-04-14 254868/week @ 2021-04-21 260663/week @ 2021-04-28 262796/week @ 2021-05-05 278516/week @ 2021-05-12 268083/week @ 2021-05-19 271077/week @ 2021-05-26 269783/week @ 2021-06-02 235794/week @ 2021-06-09

1,099,184 downloads per month
Used in 2,879 crates (217 directly)

MIT/Apache

205KB
4.5K SLoC

backtrace-rs

Documentation

A library for acquiring backtraces at runtime for Rust. This library aims to enhance the support of the standard library by providing a programmatic interface to work with, but it also supports simply easily printing the current backtrace like libstd's panics.

Install

[dependencies]
backtrace = "0.3"

Usage

To simply capture a backtrace and defer dealing with it until a later time, you can use the top-level Backtrace type.

use backtrace::Backtrace;

fn main() {
    let bt = Backtrace::new();

    // do_some_work();

    println!("{:?}", bt);
}

If, however, you'd like more raw access to the actual tracing functionality, you can use the trace and resolve functions directly.

fn main() {
    backtrace::trace(|frame| {
        let ip = frame.ip();
        let symbol_address = frame.symbol_address();

        // Resolve this instruction pointer to a symbol name
        backtrace::resolve_frame(frame, |symbol| {
            if let Some(name) = symbol.name() {
                // ...
            }
            if let Some(filename) = symbol.filename() {
                // ...
            }
        });

        true // keep going to the next frame
    });
}

License

This project is licensed under either of

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in backtrace-rs by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

Dependencies

~3.5MB
~74K SLoC