This is the same change as already made for Windows:
https://webrtc-codereview.appspot.com/37069004/
* Remove "dead" and "alive" variables.
* Remove critical section
* Remove implementation of SetNotAlive()
* Always set thread name
* Add thread checks for correct usage.
* Changed AudioDeviceMac to create/start/stop/delete thread objects for playout and recording, inside the respective start and stop method. The reason for this is because the AudioDeviceMac instance is currently being created on one thread and the above Start/Stop methods are being called on a different thread. So, my change makes creation, start/stop, deletion of the thread objects always happen on the same thread.
I'm making CurrentThreadId() in rtc_base_approved more visible so that it can be used from there instead of inside webrtc. Down the line we will have more thread concepts in rtc_base_approved, so I put a TODO for myself to move this functionality to there once we do.
R=henrika@webrtc.org
Review URL: https://webrtc-codereview.appspot.com/40599004
Cr-Commit-Position: refs/heads/master@{#8235}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8235 4adac7df-926f-26a2-2b94-8c16560cd09d
pthread_t is a pointer type on Mac OS X, and is thus 32 bits wide in the
32-bit environment and 64 bits wide in the 64-bit environment. WebRTC's
thread ID routines assume that thread IDs can always fit inside a uint32_t,
but this is not the case in the 64-bit Mac environment when using pthread_t
as the basis for a thread ID. Instead, switch to using the underlying Mach
port for the thread, which is a 32-bit quantity in both the 32-bit and 64-bit
environments.
The only place this seems to be used is in TraceImpl::AddThreadId, and it's
only used there for a thread ID for display.
This is a better fix than https://webrtc-codereview.appspot.com/929015 .
Review URL: https://webrtc-codereview.appspot.com/1063005
git-svn-id: http://webrtc.googlecode.com/svn/trunk@3427 4adac7df-926f-26a2-2b94-8c16560cd09d
