mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-11 12:25:53 +00:00
9a3cdc6d7c
<!-- Please describe your changes on the following line: --> Updates to fix the labels in the rendered traces, and some other tiny stuff. r? @jdm --- <!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: --> - [X] `./mach build -d` does not report any errors - [x] `./mach test-tidy` does not report any errors <!-- Either: --> - [X] There are tests for these changes Source-Repo: https://github.com/servo/servo Source-Revision: 64841090253992440b66ca12020e1125f0763cb0 --HG-- extra : subtree_source : https%3A//hg.mozilla.org/projects/converted-servo-linear extra : subtree_revision : aa83b46529f305c7a01086d6251c2b0deb661efc
85 lines
2.5 KiB
Rust
85 lines
2.5 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
//! A module for writing time profiler traces out to a self contained HTML file.
|
|
|
|
use profile_traits::time::{ProfilerCategory, TimerMetadata};
|
|
use serde_json;
|
|
use std::fs;
|
|
use std::io::{self, Write};
|
|
use std::path;
|
|
|
|
/// An RAII class for writing the HTML trace dump.
|
|
#[derive(Debug)]
|
|
pub struct TraceDump {
|
|
file: fs::File,
|
|
}
|
|
|
|
#[derive(Debug, Serialize)]
|
|
struct TraceEntry {
|
|
category: ProfilerCategory,
|
|
metadata: Option<TimerMetadata>,
|
|
|
|
#[serde(rename = "startTime")]
|
|
start_time: u64,
|
|
|
|
#[serde(rename = "endTime")]
|
|
end_time: u64,
|
|
|
|
#[serde(rename = "startEnergy")]
|
|
start_energy: u64,
|
|
|
|
#[serde(rename = "endEnergy")]
|
|
end_energy: u64,
|
|
}
|
|
|
|
impl TraceDump {
|
|
/// Create a new TraceDump and write the prologue of the HTML file out to
|
|
/// disk.
|
|
pub fn new<P>(trace_file_path: P) -> io::Result<TraceDump>
|
|
where P: AsRef<path::Path>
|
|
{
|
|
let mut file = fs::File::create(trace_file_path)?;
|
|
write_prologue(&mut file)?;
|
|
Ok(TraceDump { file: file })
|
|
}
|
|
|
|
/// Write one trace to the trace dump file.
|
|
pub fn write_one(&mut self,
|
|
category: &(ProfilerCategory, Option<TimerMetadata>),
|
|
time: (u64, u64),
|
|
energy: (u64, u64)) {
|
|
let entry = TraceEntry {
|
|
category: category.0,
|
|
metadata: category.1.clone(),
|
|
start_time: time.0,
|
|
end_time: time.1,
|
|
start_energy: energy.0,
|
|
end_energy: energy.1,
|
|
};
|
|
serde_json::to_writer(&mut self.file, &entry).unwrap();
|
|
writeln!(&mut self.file, ",").unwrap();
|
|
}
|
|
}
|
|
|
|
impl Drop for TraceDump {
|
|
/// Write the epilogue of the trace dump HTML file out to disk on
|
|
/// destruction.
|
|
fn drop(&mut self) {
|
|
write_epilogue(&mut self.file).unwrap();
|
|
}
|
|
}
|
|
|
|
fn write_prologue(file: &mut fs::File) -> io::Result<()> {
|
|
writeln!(file, "{}", include_str!("./trace-dump-prologue-1.html"))?;
|
|
writeln!(file, "{}", include_str!("./trace-dump.css"))?;
|
|
writeln!(file, "{}", include_str!("./trace-dump-prologue-2.html"))
|
|
}
|
|
|
|
fn write_epilogue(file: &mut fs::File) -> io::Result<()> {
|
|
writeln!(file, "{}", include_str!("./trace-dump-epilogue-1.html"))?;
|
|
writeln!(file, "{}", include_str!("./trace-dump.js"))?;
|
|
writeln!(file, "{}", include_str!("./trace-dump-epilogue-2.html"))
|
|
}
|