backtrace-rs

Documentation

A library for acquiring backtraces at runtime for Rust. This library aims to enhance the support given by the standard library at std::rt by providing a more stable and programmatic interface.

Install

toml [dependencies] backtrace = "0.3"

rust extern crate backtrace;

Note that this crate requires make, objcopy, and ar to be present on Linux systems.

Usage

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

```rust extern crate backtrace;

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.

```rust extern crate backtrace;

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

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

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

} ```

Platform Support

This library currently supports OSX, Linux, and Windows. Support for other platforms is always welcome!

License

This project is licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

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.