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feat: support perf walltime in Java #261

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feat: support perf walltime in Java #261

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13 changes: 13 additions & 0 deletions src/executor/helpers/env.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,19 @@ pub fn get_base_injected_env(
"0".into()
},
),
// Java: Enable frame pointers and perf map generation for flamegraph profiling.
// - UnlockDiagnosticVMOptions must come before DumpPerfMapAtExit (diagnostic option).
// - PreserveFramePointer: Preserves frame pointers for profiling.
// - DumpPerfMapAtExit: Writes /tmp/perf-<pid>.map on JVM exit for symbol resolution.
// - DebugNonSafepoints: Enables debug info for JIT-compiled non-safepoint code.
(
"JAVA_TOOL_OPTIONS",
if mode == RunnerMode::Walltime {
"-XX:+PreserveFramePointer -XX:+UnlockDiagnosticVMOptions -XX:+DumpPerfMapAtExit -XX:+DebugNonSafepoints".into()
} else {
"".into()
},
),
("ARCH", ARCH.into()),
("CODSPEED_ENV", "runner".into()),
(
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