Bug 45152 - Make GTK# threadsafe
Summary: Make GTK# threadsafe
Status: NEW
Alias: None
Product: Gtk#
Classification: Mono
Component: gtk-sharp ()
Version: unspecified
Hardware: All All
: --- normal
Target Milestone: ---
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2016-10-07 08:58 UTC by Timwi
Modified: 2016-10-07 08:59 UTC (History)
2 users (show)

Tags:
Is this bug a regression?: ---
Last known good build:

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Status:
NEW

Description Timwi 2016-10-07 08:58:03 UTC
It is a common misconception that GTK+ methods can only be called from one “GUI thread”:

http://blogs.operationaldynamics.com/andrew/software/gnome-desktop/gtk-thread-awareness

Turns out GTK+ has specific mechanisms for thread-safety in it. Using this, the Java bindings for GTK+ (and Gnome) have been made completely thread-safe with a fairly simple tweak:

http://blogs.operationaldynamics.com/andrew/software/java-gnome/thread-safety-for-java

The CLR (Mono/.NET) Monitor mechanism works exactly the same as Java’s (it is re-entrant and it is highly optimized for the common case in which the current thread already has the lock). Therefore, it stands to reason that making GTK# completely threadsafe should be similarly easy as it apparently was for Java.

The only part that I’m unsure about is whether it is possible (via gdk_threads_set_lock_functions()) to take and release a lock on a CLR object from within native code.