1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
use std::{fs::File, io::Write, path::Path};
use crate::GpuTimerScopeResult;
pub fn write_chrometrace(target: &Path, profile_data: &[GpuTimerScopeResult]) -> std::io::Result<()> {
let mut file = File::create(target)?;
write!(file, "{{\n")?;
write!(file, "\"traceEvents\": [\n")?;
if !profile_data.is_empty() {
for child in profile_data.iter().take(profile_data.len() - 1) {
write_results_recursive(&mut file, child, false)?;
}
write_results_recursive(&mut file, profile_data.last().unwrap(), true)?;
}
write!(file, "]\n")?;
write!(file, "}}\n")?;
Ok(())
}
fn write_results_recursive(file: &mut File, result: &GpuTimerScopeResult, last: bool) -> std::io::Result<()> {
write!(
file,
r#"{{ "pid":1, "tid":1, "ts":{}, "dur":{}, "ph":"X", "name":"{}" }}{}"#,
result.time.start * 1000.0 * 1000.0,
(result.time.end - result.time.start) * 1000.0 * 1000.0,
result.label,
if last && result.nested_scopes.is_empty() { "\n" } else { ",\n" }
)?;
if result.nested_scopes.is_empty() {
return Ok(());
}
for child in result.nested_scopes.iter().take(result.nested_scopes.len() - 1) {
write_results_recursive(file, child, false)?;
}
write_results_recursive(file, result.nested_scopes.last().unwrap(), last)?;
Ok(())
}