Tommi 5149242d06 Remove dependency on rtc::Event from rtc::Thread.
The problem with using an Event for the 'running_' flag is that a Wait() is necessary to check the value of the flag and calling Wait() means a synchronous system call. In chromium that can furthermore trigger checks on threads where IO/blocking operations aren't allowed.

Luckily, we don't really need this variable. Instead, I'm adding thread checks to make sure that the Thread class is used correctly and ensure that locking isn't needed for modifying state (no locks are there now). As long as we follow those rules, we only need to check if a thread_ variable has been set when we want to know if the thread is running or not.

Along the way, fixed some places where variables weren't being set or reset correctly.

Bug: webrtc:8596
Change-Id: I1467542416bc2ffbfefe276c460e76078a759bd9
Reviewed-on: https://webrtc-review.googlesource.com/27720
Reviewed-by: Henrik Grunell <henrikg@webrtc.org>
Commit-Queue: Tommi <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21042}
2017-12-04 15:15:08 +00:00
..
2017-11-25 19:03:41 +00:00
2017-11-27 13:56:22 +00:00