rust-papi

Rust bindings for PAPI.

PAPI is a library for accessing hardware performance counters on a variety of hardware.

Building

rust-papi uses rustpkg. To build rust-papi, from your local repository, do:

rustpkg build papi

This will create the library and a program at bin/papi that demonstrates that rust-papi is working.

You can also run the test suite:

RUST_THREADS=1 rustpkg test papi

The RUST_THREADS=1 is necessary to work around thread safety issues in PAPI.

Using rust-papi

Here is a simple program that does some computation and reports the number of instructions executed.

externmod papi;fnmain(){let counters = papi::CounterSet::new([papi::PAPI_TOT_INS]);let start = counters.read();let x = fib(14);let stop = counters.accum();println!("Computed fib(14) = {:d} in {:d} instructions.",
x, stop[0] - start[0]);}fnfib(n:int) -> int{if n < 2{1}else{fib(n - 1) + fib(n - 2)}}