Check for prior thread annotation macros before defining.

The macros in thread_annotations.h (LOCKABLE, SHARED_LOCKS_REQUIRED, etc.)
didn't check for an existing definition before defining a new one. This
conflicts with other libraries, specifically leveldb:

https://github.com/google/leveldb/blob/master/port/thread_annotations.h
Change-Id: Ic37b7b63a0fbf84f183e446ee8735ef997b7099d

BUG=8096

Change-Id: Ic37b7b63a0fbf84f183e446ee8735ef997b7099d
Reviewed-on: https://chromium-review.googlesource.com/614441
Reviewed-by: Peter Thatcher <pthatcher@webrtc.org>
Commit-Queue: Chris Mumford <cmumford@chromium.org>
Cr-Commit-Position: refs/heads/master@{#19374}
1 file changed
tree: 719aa439a104cd3715299847399a5f1dc0ef3ecd
  1. build_overrides/
  2. data/
  3. infra/
  4. resources/
  5. tools_webrtc/
  6. webrtc/
  7. .clang-format
  8. .git-blame-ignore-revs
  9. .gitignore
  10. .gn
  11. AUTHORS
  12. BUILD.gn
  13. check_root_dir.py
  14. cleanup_links.py
  15. CODE_OF_CONDUCT.md
  16. codereview.settings
  17. DEPS
  18. LICENSE
  19. license_template.txt
  20. LICENSE_THIRD_PARTY
  21. OWNERS
  22. PATENTS
  23. PRESUBMIT.py
  24. pylintrc
  25. README.md
  26. WATCHLISTS
README.md

WebRTC is a free, open software project that provides browsers and mobile applications with Real-Time Communications (RTC) capabilities via simple APIs. The WebRTC components have been optimized to best serve this purpose.

Our mission: To enable rich, high-quality RTC applications to be developed for the browser, mobile platforms, and IoT devices, and allow them all to communicate via a common set of protocols.

The WebRTC initiative is a project supported by Google, Mozilla and Opera, amongst others.

Development

See http://www.webrtc.org/native-code/development for instructions on how to get started developing with the native code.

More info