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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,207 @@ | ||
| // Copyright 2018 The Rust Project Developers. See the COPYRIGHT | ||
| // file at the top-level directory of this distribution and at | ||
| // http://rust-lang.org/COPYRIGHT. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | ||
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | ||
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | ||
| // option. This file may not be copied, modified, or distributed | ||
| // except according to those terms. | ||
|
|
||
| use session::config::Options; | ||
|
|
||
| use std::io::{self, StdoutLock, Write}; | ||
| use std::time::Instant; | ||
|
|
||
| #[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)] | ||
| pub enum ProfileCategory { | ||
| Parsing, | ||
| Expansion, | ||
| TypeChecking, | ||
| BorrowChecking, | ||
| Codegen, | ||
| Linking, | ||
| Other, | ||
| } | ||
|
|
||
| struct Categories<T> { | ||
| parsing: T, | ||
| expansion: T, | ||
| type_checking: T, | ||
| borrow_checking: T, | ||
| codegen: T, | ||
| linking: T, | ||
| other: T, | ||
| } | ||
|
|
||
| impl<T: Default> Categories<T> { | ||
| fn new() -> Categories<T> { | ||
| Categories { | ||
| parsing: T::default(), | ||
| expansion: T::default(), | ||
| type_checking: T::default(), | ||
| borrow_checking: T::default(), | ||
| codegen: T::default(), | ||
| linking: T::default(), | ||
| other: T::default(), | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl<T> Categories<T> { | ||
| fn get(&self, category: ProfileCategory) -> &T { | ||
| match category { | ||
| ProfileCategory::Parsing => &self.parsing, | ||
| ProfileCategory::Expansion => &self.expansion, | ||
| ProfileCategory::TypeChecking => &self.type_checking, | ||
| ProfileCategory::BorrowChecking => &self.borrow_checking, | ||
| ProfileCategory::Codegen => &self.codegen, | ||
| ProfileCategory::Linking => &self.linking, | ||
| ProfileCategory::Other => &self.other, | ||
| } | ||
| } | ||
|
|
||
| fn set(&mut self, category: ProfileCategory, value: T) { | ||
| match category { | ||
| ProfileCategory::Parsing => self.parsing = value, | ||
| ProfileCategory::Expansion => self.expansion = value, | ||
| ProfileCategory::TypeChecking => self.type_checking = value, | ||
| ProfileCategory::BorrowChecking => self.borrow_checking = value, | ||
| ProfileCategory::Codegen => self.codegen = value, | ||
| ProfileCategory::Linking => self.linking = value, | ||
| ProfileCategory::Other => self.other = value, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| struct CategoryData { | ||
| times: Categories<u64>, | ||
| } | ||
|
|
||
| impl CategoryData { | ||
| fn new() -> CategoryData { | ||
| CategoryData { | ||
| times: Categories::new(), | ||
| } | ||
| } | ||
|
|
||
| fn print(&self, lock: &mut StdoutLock) { | ||
| writeln!(lock, "{0: <15} \t\t {1: <15}", "Parsing", self.times.parsing / 1_000_000).unwrap(); | ||
| writeln!(lock, "{0: <15} \t\t {1: <15}", "Expansion", self.times.expansion / 1_000_000).unwrap(); | ||
| writeln!(lock, "{0: <15} \t\t {1: <15}", "TypeChecking", self.times.type_checking / 1_000_000).unwrap(); | ||
| writeln!(lock, "{0: <15} \t\t {1: <15}", "BorrowChecking", self.times.borrow_checking / 1_000_000).unwrap(); | ||
| writeln!(lock, "{0: <15} \t\t {1: <15}", "Codegen", self.times.codegen / 1_000_000).unwrap(); | ||
| writeln!(lock, "{0: <15} \t\t {1: <15}", "Linking", self.times.linking / 1_000_000).unwrap(); | ||
| writeln!(lock, "{0: <15} \t\t {1: <15}", "Other", self.times.other / 1_000_000).unwrap(); | ||
| } | ||
| } | ||
|
|
||
| pub struct SelfProfiler { | ||
| timer_stack: Vec<ProfileCategory>, | ||
| data: CategoryData, | ||
| current_timer: Instant, | ||
| } | ||
|
|
||
| pub struct ProfilerActivity<'a>(ProfileCategory, &'a mut SelfProfiler); | ||
|
|
||
| impl<'a> Drop for ProfilerActivity<'a> { | ||
| fn drop(&mut self) { | ||
| let ProfilerActivity (category, profiler) = self; | ||
|
|
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| profiler.end_activity(*category); | ||
| } | ||
| } | ||
|
|
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| impl SelfProfiler { | ||
| pub fn new() -> SelfProfiler { | ||
| let mut profiler = SelfProfiler { | ||
| timer_stack: Vec::new(), | ||
| data: CategoryData::new(), | ||
| current_timer: Instant::now(), | ||
| }; | ||
|
|
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| profiler.start_activity(ProfileCategory::Other); | ||
|
|
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| profiler | ||
| } | ||
|
|
||
| pub fn start_activity(&mut self, category: ProfileCategory) { | ||
| match self.timer_stack.last().cloned() { | ||
| None => { | ||
| self.current_timer = Instant::now(); | ||
| }, | ||
| Some(current_category) if current_category == category => { | ||
| //since the current category is the same as the new activity's category, | ||
| //we don't need to do anything with the timer, we just need to push it on the stack | ||
| } | ||
| Some(current_category) => { | ||
| let elapsed = self.stop_timer(); | ||
|
|
||
| //record the current category's time | ||
| let new_time = self.data.times.get(current_category) + elapsed; | ||
| self.data.times.set(current_category, new_time); | ||
| } | ||
| } | ||
|
|
||
| //push the new category | ||
| self.timer_stack.push(category); | ||
| } | ||
|
|
||
| pub fn end_activity(&mut self, category: ProfileCategory) { | ||
| match self.timer_stack.pop() { | ||
| None => bug!("end_activity() was called but there was no running activity"), | ||
| Some(c) => | ||
| assert!( | ||
| c == category, | ||
| "end_activity() was called but a different activity was running"), | ||
| } | ||
|
|
||
| //check if the new running timer is in the same category as this one | ||
| //if it is, we don't need to do anything | ||
| if let Some(c) = self.timer_stack.last() { | ||
| if *c == category { | ||
| return; | ||
| } | ||
| } | ||
|
|
||
| //the new timer is different than the previous, so record the elapsed time and start a new timer | ||
| let elapsed = self.stop_timer(); | ||
| let new_time = self.data.times.get(category) + elapsed; | ||
| self.data.times.set(category, new_time); | ||
| } | ||
|
|
||
| fn stop_timer(&mut self) -> u64 { | ||
| let elapsed = self.current_timer.elapsed(); | ||
|
|
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| self.current_timer = Instant::now(); | ||
|
|
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| (elapsed.as_secs() * 1_000_000_000) + (elapsed.subsec_nanos() as u64) | ||
| } | ||
|
|
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| pub fn print_results(&mut self, opts: &Options) { | ||
| self.end_activity(ProfileCategory::Other); | ||
|
|
||
| assert!(self.timer_stack.is_empty(), "there were timers running when print_results() was called"); | ||
|
|
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| let out = io::stdout(); | ||
| let mut lock = out.lock(); | ||
|
|
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| let crate_name = opts.crate_name.as_ref().map(|n| format!(" for {}", n)).unwrap_or_default(); | ||
|
|
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| writeln!(lock, "Self profiling results{}:", crate_name).unwrap(); | ||
|
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| self.data.print(&mut lock); | ||
|
|
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| writeln!(lock).unwrap(); | ||
| writeln!(lock, "Optimization level: {:?}", opts.optimize).unwrap(); | ||
|
|
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| let incremental = if opts.incremental.is_some() { "on" } else { "off" }; | ||
| writeln!(lock, "Incremental: {}", incremental).unwrap(); | ||
| } | ||
|
|
||
| pub fn record_activity<'a>(&'a mut self, category: ProfileCategory) -> ProfilerActivity<'a> { | ||
| self.start_activity(category); | ||
|
|
||
| ProfilerActivity(category, self) | ||
| } | ||
| } |
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