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-rw-r--r--crates/ra_prof/src/lib.rs33
1 files changed, 33 insertions, 0 deletions
diff --git a/crates/ra_prof/src/lib.rs b/crates/ra_prof/src/lib.rs
index de67b4031..1e8d780ab 100644
--- a/crates/ra_prof/src/lib.rs
+++ b/crates/ra_prof/src/lib.rs
@@ -255,6 +255,39 @@ impl Drop for Scope {
255 } 255 }
256} 256}
257 257
258/// A wrapper around https://github.com/AtheMathmo/cpuprofiler
259///
260/// It can be used to capture sampling profiles of sections of code.
261/// It is not exactly out-of-the-box, as it relies on gperftools.
262/// See the docs for the crate for more!
263#[derive(Debug)]
264pub struct CpuProfiler {
265 _private: (),
266}
267
268pub fn cpu_profiler() -> CpuProfiler {
269 #[cfg(feature = "cpuprofiler")]
270 {
271 cpuprofiler::PROFILER.lock().unwrap().start("./out.profile").unwrap();
272 }
273
274 #[cfg(not(feature = "cpuprofiler"))]
275 {
276 eprintln!("cpuprofiler feature is disabled")
277 }
278
279 CpuProfiler { _private: () }
280}
281
282impl Drop for CpuProfiler {
283 fn drop(&mut self) {
284 #[cfg(feature = "cpuprofiler")]
285 {
286 cpuprofiler::PROFILER.lock().unwrap().stop().unwrap();
287 }
288 }
289}
290
258#[cfg(test)] 291#[cfg(test)]
259mod tests { 292mod tests {
260 use super::*; 293 use super::*;