Summary: We're seeing intermittent crashes in ~Bridge() where m_destroyed isn't set. This could be because the value of m_destroyed is cached for the destructing thread and doesn't see that the value got updated. Using an atomic boolean should fix this.
Reviewed By: mhorowitz
Differential Revision: D3126701
fb-gh-sync-id: 5887edef748cc05971765943de80187ab7fd8ede
fbshipit-source-id: 5887edef748cc05971765943de80187ab7fd8ede