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| author | 2024-09-16 20:49:08 -0700 | |
|---|---|---|
| committer | 2024-09-17 16:12:32 -0700 | |
| commit | fd9d6a097c9c764e4a8554007177b25aeaa0f4eb (patch) | |
| tree | bf4bbb3b1d985267a241902daf302f611108d02b /api/api_test.go | |
| parent | feaa25f828313c707a9258ef1a1b472cd7ef5b32 (diff) | |
Add anr tracing to AnrTimerService
This change allows user to configure tracing on ANR timers for
specified processes. Configuration is through the `am` shell command;
it is meant to be used by application or system developers - not by
end users. When a timer is traced, extra actions can be executed at
the "split point" - an early timeout specified as a percentage of the
originally programmed timeout. Information at the early timeout helps
developers analyze current or incipient ANRs.
Tested by manually generating an ANR (using a custom app) and
verifying that the expected perfetto trace events were created or
that the timer expired, as appropriate.
The command to generate trace points on a process's timer is:
`adb shell am trace-timer name="anrtimer.receiver"`
The command to generate tracepoints and expire a timer at the 20% point is:
`adb shell am trace-timer name="anrtimer.receiver" expire=20`
The command to disable tracing, if it was ever enabled, is:
`adb shell am trace-timer off`
Bug: 352085328
Flag: com.android.server.utils.anr_timer_trace
Test: atest
* FrameworksServicesTests:com.android.server.am
* FrameworksServicesTests:AnrTimerTest
Change-Id: Ibc30f1f488baff056225671f063f026ce30e2e6f
Diffstat (limited to 'api/api_test.go')
0 files changed, 0 insertions, 0 deletions