Since iOS reads Annotations in-process, this CL updates the iOS
intermediate dump handler to check each Annotation to see if it supports
guarding concurrent reads and writes using ScopedSpinGuard.
For any such Annotation, the in-process dump handler now tries (without
spinning) to obtain the ScopedSpinGuard for the Annotation before
reading its memory.
If the ScopedSpinGuard cannot immediately be obtained, the in-process
dump handler just skips writing the memory of the Annotation to the
intermediate dump. (I'd like to follow up and thread down a Params
object so we can experiment with adding an optional timeout to make
this more reliable.)
Change-Id: Ie6c9849fac94ab89b36364b07aea62326cabe552
Bug: crashpad:437
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/4031730
Commit-Queue: Ben Hamilton <benhamilton@google.com>
Reviewed-by: Mark Mentovai <mark@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
c7d9c710f2