diff options
| author | Adin Scannell <ascannell@google.com> | 2019-12-06 16:58:28 -0800 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2019-12-06 17:00:07 -0800 |
| commit | 371e210b83c244d8828ad2fa1b3d7cef15fbf463 (patch) | |
| tree | 6617af43e8182a9784ac5525ac3e9fe5d8543aa0 /pkg/sentry/kernel/task_block.go | |
| parent | 3e84777d2e2a2b56c00487cd77aa8d2fc25bbb16 (diff) | |
Add runtime tracing.
This adds meaningful annotations to the trace generated by the runtime/trace
package.
PiperOrigin-RevId: 284290115
Diffstat (limited to 'pkg/sentry/kernel/task_block.go')
| -rw-r--r-- | pkg/sentry/kernel/task_block.go | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/pkg/sentry/kernel/task_block.go b/pkg/sentry/kernel/task_block.go index dd69939f9..4a4a69ee2 100644 --- a/pkg/sentry/kernel/task_block.go +++ b/pkg/sentry/kernel/task_block.go @@ -16,6 +16,7 @@ package kernel import ( "runtime" + "runtime/trace" "time" ktime "gvisor.dev/gvisor/pkg/sentry/kernel/time" @@ -133,19 +134,24 @@ func (t *Task) block(C <-chan struct{}, timerChan <-chan struct{}) error { runtime.Gosched() } + region := trace.StartRegion(t.traceContext, blockRegion) select { case <-C: + region.End() t.SleepFinish(true) + // Woken by event. return nil case <-interrupt: + region.End() t.SleepFinish(false) // Return the indicated error on interrupt. return syserror.ErrInterrupted case <-timerChan: - // We've timed out. + region.End() t.SleepFinish(true) + // We've timed out. return syserror.ETIMEDOUT } } |