tree 32955537258df22b8189c4d5140b90b3b68f5f30
parent ad2ed918f9c60723ebd602d1c40edb3b773fdf65
author Zim <zezeozue@google.com> 1688560509 +0100
committer Zim <zezeozue@google.com> 1688564002 +0100

[metrics] Add thread creation spam stats to android_task_names

First added an ANDROID_THREAD_CREATION_SPAM stdlib function to
find stats of rapidly created threads.

To support finding thread names where only some suffix changes,
e.g Thread-123, we aggreate the stats per process per thread prefix.
We currently use a STR_SPLIT workaround to find prefixes by splitting
thread names by some common delimiters. When we have perfetto REGEXP
support, we can replace this with a more robust solution.

Test: tools/diff_test_trace_processor.py out/android/trace_processor_shell
Change-Id: I3862462b17cc8f494a6f2577f05b58d7289e1044