1789810 - [meta] Investigate potential life/dead locks on the child process' main thread

Status: NEW

(Core :: DOM: Content Processes, task)

Description

[Jens Stutte [:jstutte]]

There seem to be some cases of hangs where we just wait for some cond var or similar. Let's collect those here.

Comment 1

[Jens Stutte [:jstutte]]

There seem to be quite some cases where we have a SpinEventLoopUntil on the content process' main thread stack.

Those might deserve a second look.

Comment 2

[Jens Stutte [:jstutte]]

1 	tab: ChildProfilerController::ShutdownProfilerChild SYNC 	322 	63.89 %
2 	tab: nsGlobalWindowInner::ShowSlowScriptDialog 	43 	8.53 %
3 	tab: XMLHttpRequestMainThread::SendInternal 	42 	8.33 %
4 	tab: AudioCallbackDriver::Shutdown 	28 	5.56 %
5 	tab: nsThread::Shutdown: DOM Worker 	15 	2.98 %
6 	tab: ChildProfilerController::ShutdownProfilerChild SYNC|AudioCallbackDriver::Shutdown 	5 	0.99 %
7 	tab: XMLHttpRequestMainThread::SendInternal|XMLHttpRequestMainThread::SendInternal 	4 	0.79 %
8 	tab: nsThread::Shutdown: GraphRunner 	3 	0.60 %
9 	tab: nsThreadPool::ShutdownWithTimeout|nsThreadPool::ShutdownWithTimeout 	3 	0.60 %
10 	tab: ContentChild::ProvideWindowCommon 	2 	0.40 %
11 	tab: XMLHttpRequestMainThread::SendInternal|XMLHttpRequestMainThread::SendInternal|XMLHttpRequestMainThread::SendInternal 	2 	0.40 %
12 	tab: nsThread::Shutdown: DOM Worker,SHDRCV 	2 	0.40 %
13 	tab: nsThread::Shutdown: GraphRunner|nsThread::Shutdown: DOM Worker|nsThread::Shutdown: DOM Worker|nsThread::Shutdown: GraphRunner|nsThread::Shutdown: GraphRunner|nsThread::Shutdown: GraphRunner|nsThread::Shutdown: GraphRunner,SHDRCV|nsThread::Shutdown: GraphRunner|nsThread::Shutdown: GraphRunner|nsThread::Shutdown: GraphRunner,SHDRCV|AudioCallbackDriver::Shutdown 	2 	0.40 %
14 	tab: AudioCallbackDriver::Shutdown|AudioCallbackDriver::Shutdown 	1 	0.20 %
15 	tab: ChildProfilerController::ShutdownProfilerChild SYNC|nsThread::Shutdown: DOM Worker 	1 	0.20 %
16 	tab: ChildProfilerController::ShutdownProfilerChild SYNC|nsThread::Shutdown: DOM Worker|nsThread::Shutdown: DOM Worker|nsThread::Shutdown: DOM Worker 	1 	0.20 %
17 	tab: ChildProfilerController::ShutdownProfilerChild SYNC|nsThread::Shutdown: GraphRunner|AudioCallbackDriver::Shutdown 	1 	0.20 %
18 	tab: XMLHttpRequestMainThread::SendInternal|XMLHttpRequestMainThread::SendInternal|XMLHttpRequestMainThread::SendInternal|XMLHttpRequestMainThread::SendInternal 	1 	0.20 %