papi-sys

Usage

First, add the following to your Cargo.toml:

[dependencies]
papi-sys = "0.1.0"

Before building, ensure that PAPI is installed on your system.

What is papi-sys?

The purpose of this crate is to provide 1:1 bindings for papi.h. PAPI is a library that provides a consistent interface to hardware performance counters. Visit the PAPI website for more information.

Note that this crate does not provide a high-level interface to PAPI.

Environment Variables

There are two environment variables to specify a custom PAPI library path:

• PAPI_PREFIX: required to generate bindings.rs
• LD_LIBRARY_PATH: required to dynamically link libpapi.so

Let's assume you installed PAPI in /opt/papi/5.7.0/, then you can test by

$ PAPI_PREFIX=/opt/papi/5.7.0/ LD_LIBRARY_PATH=/opt/papi/5.7.0/lib:$LD_LIBRARY_PATH cargo test

To avoid setting LD_LIBRARY_PATH, you can configure the search path globally by running:

$ sudo echo "/opt/papi/5.7.0/" > /etc/ld.so.conf.d/papi.conf
$ sudo ldconfig

Platforms

The following platforms are currently tested:

• x86_64-unknown-linux-gnu
• powerpc64le-unknown-linux-gnu

Dependencies

The following dependency versions are currently required:

• rustc >= 1.36
• gcc >= 4.8 or clang >= 3.8

License

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 the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.