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fix off-by-one bug while reading heaptrack files #8101

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merged 4 commits into from
May 16, 2024
Merged

fix off-by-one bug while reading heaptrack files #8101

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522ecc3
fix off-by-one error
sokra May 7, 2024
03e6f6c
report stats at end of reading
sokra May 7, 2024
39adac6
avoid max to become zero
sokra May 7, 2024
8a791bf
clippy
sokra May 8, 2024
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5 changes: 1 addition & 4 deletions crates/turbopack-trace-server/src/reader/heaptrack.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -138,10 +138,7 @@ impl HeaptrackFormat {
}
},
trace_instruction_pointers: vec![0],
allocations: vec![AllocationInfo {
size: 0,
trace_index: 0,
}],
allocations: vec![],
spans: 0,
collapse_crates: env::var("COLLAPSE_CRATES")
.unwrap_or_default()
Expand Down
31 changes: 17 additions & 14 deletions crates/turbopack-trace-server/src/reader/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,8 @@
store_container::StoreContainer,
};

const MIN_INITIAL_REPORT_SIZE: u64 = 100 * 1024 * 1024;

trait TraceFormat {
fn read(&mut self, buffer: &[u8]) -> Result<usize>;
fn stats(&self) -> String {
Expand Down Expand Up @@ -115,17 +117,7 @@
let mut format: Option<Box<dyn TraceFormat>> = None;

let mut current_read = 0;
let mut initial_read = {
if let Ok(pos) = file.seek(SeekFrom::End(0)) {
if pos > 100 * 1024 * 1024 {
Some(pos)
} else {
None
}
} else {
None
}
};
let mut initial_read = { file.seek(SeekFrom::End(0)).ok() };
if file.seek(SeekFrom::Start(0)).is_err() {
return false;
}
Expand All @@ -145,7 +137,9 @@
match file.read(&mut chunk) {
Ok(bytes_read) => {
if bytes_read == 0 {
if let Some(value) = self.wait_for_more_data(&mut file, &mut initial_read) {
if let Some(value) =
self.wait_for_more_data(&mut file, &mut initial_read, format.as_ref())
{
return value;
}
} else {
Expand Down Expand Up @@ -220,7 +214,9 @@
}
Err(err) => {
if err.kind() == io::ErrorKind::UnexpectedEof {
if let Some(value) = self.wait_for_more_data(&mut file, &mut initial_read) {
if let Some(value) =
self.wait_for_more_data(&mut file, &mut initial_read, format.as_ref())
{
return value;
}
} else {
Expand All @@ -237,12 +233,19 @@
&mut self,
file: &mut TraceFile,
initial_read: &mut Option<u64>,
format: Option<&Box<dyn TraceFormat>>,

Check failure on line 236 in crates/turbopack-trace-server/src/reader/mod.rs

View workflow job for this annotation

GitHub Actions / Turbopack rust clippy 

you seem to be trying to use `&Box<T>`. Consider using just `&T`
) -> Option<bool> {
let Ok(pos) = file.stream_position() else {
return Some(true);
};
if let Some(total) = initial_read.take() {
println!("Initial read completed ({} MB)", total / (1024 * 1024),);
if let Some(format) = format {
let stats = format.stats();
println!("{}", stats);
}
if total > MIN_INITIAL_REPORT_SIZE {
println!("Initial read completed ({} MB)", total / (1024 * 1024));
}
}
thread::sleep(Duration::from_millis(100));
let Ok(end) = file.seek(SeekFrom::End(0)) else {
Expand Down
2 changes: 1 addition & 1 deletion crates/turbopack-trace-server/src/viewer.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -853,7 +853,7 @@ impl Viewer {
.collect();
Update {
lines,
max: current,
max: max(1, current),
}
}
}
Expand Down
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