reverie/reverie-examples/noop.rs
facebook-github-bot 15d2f61411 Initial commit
fbshipit-source-id: c440d991296c92bdc5e109a11d269049e8840e94
2021-12-29 16:14:27 -08:00

38 lines
1.1 KiB
Rust

/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree.
*/
//! This instrumentation tool intercepts events but does nothing with them. It is
//! useful for observing the overhead of interception, and as a starting point.
use reverie::{Error, Subscription, Tool};
use reverie_util::CommonToolArguments;
use serde::{Deserialize, Serialize};
use structopt::StructOpt;
#[derive(Debug, Default, Serialize, Deserialize)]
struct NoopTool;
#[reverie::tool]
impl Tool for NoopTool {
fn subscriptions(_cfg: &()) -> Subscription {
Subscription::none()
}
}
#[tokio::main]
async fn main() -> Result<(), Error> {
let args = CommonToolArguments::from_args();
let log_guard = args.init_tracing();
let tracer = reverie_ptrace::TracerBuilder::<NoopTool>::new(args.into())
.spawn()
.await?;
let (status, _global_state) = tracer.wait().await?;
drop(log_guard); // Flush logs before exiting.
status.raise_or_exit()
}