зеркало из https://github.com/mozilla/gecko-dev.git
80 строки
2.4 KiB
Rust
80 строки
2.4 KiB
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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//! A module for writing time profiler traces out to a self contained HTML file.
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use profile_traits::time::{ProfilerCategory, TimerMetadata};
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use serde_json;
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use std::fs;
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use std::io::Write;
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/// An RAII class for writing the HTML trace dump.
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pub struct TraceDump {
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file: fs::File,
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}
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#[derive(Debug, Serialize)]
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struct TraceEntry {
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category: ProfilerCategory,
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metadata: Option<TimerMetadata>,
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#[serde(rename = "startTime")]
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start_time: u64,
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#[serde(rename = "endTime")]
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end_time: u64,
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#[serde(rename = "startEnergy")]
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start_energy: u64,
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#[serde(rename = "endEnergy")]
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end_energy: u64,
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}
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impl TraceDump {
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/// Create a new TraceDump and write the prologue of the HTML file out to
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/// disk.
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pub fn new(mut file: fs::File) -> TraceDump {
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write_prologue(&mut file);
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TraceDump { file: file }
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}
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/// Write one trace to the trace dump file.
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pub fn write_one(&mut self,
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category: &(ProfilerCategory, Option<TimerMetadata>),
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time: (u64, u64),
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energy: (u64, u64)) {
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let entry = TraceEntry {
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category: category.0,
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metadata: category.1.clone(),
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start_time: time.0,
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end_time: time.1,
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start_energy: energy.0,
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end_energy: energy.1,
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};
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serde_json::to_writer(&mut self.file, &entry).unwrap();
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writeln!(&mut self.file, ",").unwrap();
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}
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}
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impl Drop for TraceDump {
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/// Write the epilogue of the trace dump HTML file out to disk on
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/// destruction.
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fn drop(&mut self) {
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write_epilogue(&mut self.file);
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}
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}
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fn write_prologue(file: &mut fs::File) {
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writeln!(file, "{}", include_str!("./trace-dump-prologue-1.html")).unwrap();
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writeln!(file, "{}", include_str!("./trace-dump.css")).unwrap();
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writeln!(file, "{}", include_str!("./trace-dump-prologue-2.html")).unwrap();
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}
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fn write_epilogue(file: &mut fs::File) {
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writeln!(file, "{}", include_str!("./trace-dump-epilogue-1.html")).unwrap();
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writeln!(file, "{}", include_str!("./trace-dump.js")).unwrap();
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writeln!(file, "{}", include_str!("./trace-dump-epilogue-2.html")).unwrap();
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}
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