bjoernager/rust
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Integrate measureme's hardware performance counter support.

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Eduard-Mihai Burtescu 2020-10-22 08:51:31 +03:00 • committed by Eduard-Mihai Burtescu
parent 083721a1a7
commit d76573abd1
4 changed files with 21 additions and 5 deletions
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14
compiler/rustc_data_structures/src/profiling.rs
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@ -550,14 +550,20 @@ impl SelfProfiler {
pub fn new(
output_directory: &Path,
crate_name: Option<&str>,
event_filters: &Option<Vec<String>>,
event_filters: Option<&[String]>,
counter_name: &str,
) -> Result<SelfProfiler, Box<dyn Error + Send + Sync>> {
fs::create_dir_all(output_directory)?;
let crate_name = crate_name.unwrap_or("unknown-crate");
let filename = format!("{}-{}.rustc_profile", crate_name, process::id());
// HACK(eddyb) we need to pad the PID, strange as it may seem, as its
// length can behave as a source of entropy for heap addresses, when
// ASLR is disabled and the heap is otherwise determinic.
let pid: u32 = process::id();
let filename = format!("{}-{:07}.rustc_profile", crate_name, pid);
let path = output_directory.join(&filename);
let profiler = Profiler::new(&path)?;
let profiler =
Profiler::with_counter(&path, measureme::counters::Counter::by_name(counter_name)?)?;
let query_event_kind = profiler.alloc_string("Query");
let generic_activity_event_kind = profiler.alloc_string("GenericActivity");
@ -570,7 +576,7 @@ impl SelfProfiler {
let mut event_filter_mask = EventFilter::empty();
if let Some(ref event_filters) = *event_filters {
if let Some(event_filters) = event_filters {
let mut unknown_events = vec![];
for item in event_filters {
if let Some(&(_, mask)) =