mirror of
https://github.com/facebookexperimental/reverie.git
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20c7020868
Summary: The OSS license linter doesn't like the word "its". Reviewed By: johnhurt Differential Revision: D36856385 fbshipit-source-id: 909037d96de8976f08004497d28b77838f8c6870
61 lines
1.5 KiB
Rust
61 lines
1.5 KiB
Rust
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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//! Runs a process, gathering metadata about all of the processes that were ran
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//! and displays it as a tree using Graphviz.
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mod event;
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mod global_state;
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mod tool;
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use tool::ChromeTrace;
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use structopt::StructOpt;
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use anyhow::Context;
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use reverie::Error;
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use reverie_util::CommonToolArguments;
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use std::fs;
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use std::io;
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use std::path::PathBuf;
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/// A tool to render a summary of the process tree.
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#[derive(Debug, StructOpt)]
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struct Args {
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#[structopt(flatten)]
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common: CommonToolArguments,
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/// The path to write out Chrome trace file. This can be loaded with
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/// `chrome://tracing`.
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#[structopt(long)]
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out: Option<PathBuf>,
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}
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#[tokio::main]
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async fn main() -> Result<(), Error> {
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let args = Args::from_args();
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let log_guard = args.common.init_tracing();
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let tracer = reverie_ptrace::TracerBuilder::<ChromeTrace>::new(args.common.into())
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.spawn()
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.await?;
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let (status, global_state) = tracer.wait().await?;
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if let Some(path) = args.out {
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let mut f = io::BufWriter::new(fs::File::create(path)?);
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global_state
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.chrome_trace(&mut f)
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.context("failed to generate Chrome trace")?;
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}
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// Flush logs before exiting.
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drop(log_guard);
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status.raise_or_exit()
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}
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