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Enable leak backtraces by setting LEAK_BACKTRACE=1
Co-Authored-By: Nathan Sobo <nathan@zed.dev>
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parent
4cfd345f9d
commit
aa03ebce0e
1 changed files with 24 additions and 5 deletions
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@ -10,6 +10,7 @@ use crate::{
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use anyhow::{anyhow, Result};
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use backtrace::Backtrace;
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use keymap::MatchResult;
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use lazy_static::lazy_static;
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use parking_lot::Mutex;
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use platform::Event;
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use postage::{mpsc, oneshot, sink::Sink as _, stream::Stream as _};
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@ -3767,20 +3768,30 @@ impl Drop for Subscription {
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}
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}
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lazy_static! {
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static ref LEAK_BACKTRACE: bool =
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std::env::var("LEAK_BACKTRACE").map_or(false, |b| !b.is_empty());
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}
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#[derive(Default)]
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pub struct LeakDetector {
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next_handle_id: usize,
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handle_backtraces: HashMap<usize, (Option<&'static str>, HashMap<usize, Backtrace>)>,
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handle_backtraces: HashMap<usize, (Option<&'static str>, HashMap<usize, Option<Backtrace>>)>,
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}
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impl LeakDetector {
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fn handle_created(&mut self, type_name: Option<&'static str>, entity_id: usize) -> usize {
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let handle_id = post_inc(&mut self.next_handle_id);
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let entry = self.handle_backtraces.entry(entity_id).or_default();
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let backtrace = if *LEAK_BACKTRACE {
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Some(Backtrace::new_unresolved())
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} else {
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None
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};
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if let Some(type_name) = type_name {
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entry.0.get_or_insert(type_name);
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}
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entry.1.insert(handle_id, Backtrace::new_unresolved());
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entry.1.insert(handle_id, backtrace);
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handle_id
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}
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@ -3803,12 +3814,20 @@ impl LeakDetector {
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id
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);
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for trace in backtraces.values_mut() {
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trace.resolve();
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eprintln!("{:?}", CwdBacktrace(trace));
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if let Some(trace) = trace {
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trace.resolve();
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eprintln!("{:?}", CwdBacktrace(trace));
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}
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}
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found_leaks = true;
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}
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assert!(!found_leaks, "detected leaked handles");
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let hint = if *LEAK_BACKTRACE {
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""
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} else {
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" – set LEAK_BACKTRACE=1 for more information"
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};
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assert!(!found_leaks, "detected leaked handles{}", hint);
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}
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}
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