[Webkit-unassigned] [Bug 217655] [WPE] PlatformDisplay::shutDownEglDisplays() is never called

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=217655

--- Comment #1 from Claudio Saavedra <csaavedra at igalia.com> ---
I've been looking at this again due to a downstream bug with wpewebkit. Turns out that most of the times, the webprocess exists when one of the IPC connections to the ui process is closed. This happens via a couple of handlers that are installed in both WebProcess and AuxiliaryProcess. These handlers use _exit(2) to ensure that, when the connection with the UI process is gone, the process is not left lingering.

What is important about this is that _exit(2) does NOT run the handlers that are installed via on_exit(3) or atexit(3). My observations indicate that most of the times the web process is exiting via _exit(2), which would explain why this method (now a lambda, btw, after r261905) is not always called.

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