Track thread activities in order to diagnose hangs.
There are a large number of "unclean shutdowns" in Chrome
with little information available as to what the various
threads of Chrome were doing that prevented a proper
close.
The ActivityTracker class provides a low-overhead way
of keeping track of what each thread is doing in a
persistent manner that can be analyzed both in real-
time and post-mortem.
The ActivityAnalyzer class provides an interface into
the persisted data for analysis. Using that data is
for a future CL.
Operation is controlled by an experiment. Enable
manually with:
--enable-features=StabilityDebugging
BUG=620813
Committed: https://crrev.com/5d3470e5a33aaad936e171bee625b6b978ee3c34
Review-Url: https://codereview.chromium.org/1980743002
Cr-Original-Commit-Position: refs/heads/master@{#410470}
Cr-Commit-Position: refs/heads/master@{#410938}
21 files changed
