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Remove cpuprofile dependencies

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This commit is contained in:
Aleksey Kladov 2019-08-17 15:29:57 +03:00
parent c2dcabef2a
commit e751e4d8a3
5 changed files with 63 additions and 64 deletions
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32
crates/ra_prof/src/lib.rs
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@ -1,4 +1,6 @@
mod memory_usage;
#[cfg(feature = "cpu_profiler")]
mod google_cpu_profiler;
use std::{
cell::RefCell,
@ -268,25 +270,35 @@ impl Drop for Scope {
}
}
/// A wrapper around https://github.com/AtheMathmo/cpuprofiler
/// A wrapper around google_cpu_profiler.
///
/// It can be used to capture sampling profiles of sections of code.
/// It is not exactly out-of-the-box, as it relies on gperftools.
/// See the docs for the crate for more!
/// Usage:
/// 1. Install gpref_tools (https://github.com/gperftools/gperftools), probably packaged with your Linux distro.
/// 2. Build with `cpu_profiler` feature.
/// 3. Tun the code, the *raw* output would be in the `./out.profile` file.
/// 4. Install pprof for visualization (https://github.com/google/pprof).
/// 5. Use something like `pprof -svg target/release/ra_cli ./out.profile` to see the results.
///
/// For example, here's how I run profiling on NixOS:
///
/// ```bash
/// $ nix-shell -p gperftools --run \
/// 'cargo run --release -p ra_cli -- parse < ~/projects/rustbench/parser.rs > /dev/null'
/// ```
#[derive(Debug)]
pub struct CpuProfiler {
_private: (),
}
pub fn cpu_profiler() -> CpuProfiler {
#[cfg(feature = "cpuprofiler")]
#[cfg(feature = "cpu_profiler")]
{
cpuprofiler::PROFILER.lock().unwrap().start("./out.profile").unwrap();
google_cpu_profiler::start("./out.profile".as_ref())
}
#[cfg(not(feature = "cpuprofiler"))]
#[cfg(not(feature = "cpu_profiler"))]
{
eprintln!("cpuprofiler feature is disabled")
eprintln!("cpu_profiler feature is disabled")
}
CpuProfiler { _private: () }
@ -294,9 +306,9 @@ pub fn cpu_profiler() -> CpuProfiler {
impl Drop for CpuProfiler {
fn drop(&mut self) {
#[cfg(feature = "cpuprofiler")]
#[cfg(feature = "cpu_profiler")]
{
cpuprofiler::PROFILER.lock().unwrap().stop().unwrap();
google_cpu_profiler::stop()
}
}
}