[ios] Fix two shutdown races

There were two shutdown races in the iOS Crashpad client:

1) MachMessageServer::Run can return either MACH_RCV_PORT_CHANGED *or*
   MACH_RCV_INVALID_NAME based on the timing of when the port is
   closed, for example:
   https://github.com/mattgallagher/CwlPreconditionTesting/blob/c21f7bab5ca8eee0a9998bbd17ca1d0eb45d4688/Sources/CwlPreconditionTesting/CwlCatchBadInstruction.swift#L131
2) The iOS crashpad::CrashHandler thread could read from its member
   variable mach_handler_running_ while another thread wrote to it

Change-Id: I696ece8575d9b88cbd0593e7c479bd4c7f863f45
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3651395
Reviewed-by: Justin Cohen <justincohen@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Justin Cohen <justincohen@chromium.org>
1 file changed
tree: e94b6619a8efd0f7985ac0527335e4823a7d3b63
  1. build/
  2. client/
  3. compat/
  4. doc/
  5. handler/
  6. infra/
  7. minidump/
  8. snapshot/
  9. test/
  10. third_party/
  11. tools/
  12. util/
  13. .clang-format
  14. .gitattributes
  15. .gitignore
  16. .gn
  17. .style.yapf
  18. .vpython
  19. .vpython3
  20. AUTHORS
  21. BUILD.gn
  22. codereview.settings
  23. CONTRIBUTORS
  24. DEPS
  25. LICENSE
  26. navbar.md
  27. package.h
  28. README.md
README.md

Crashpad

Crashpad is a crash-reporting system.

Documentation

Source Code

Crashpad’s source code is hosted in a Git repository at https://chromium.googlesource.com/crashpad/crashpad.

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