Files
glib/gio
Philip Withnall 341cd08a42 gmemorymonitorbase: Emit signals in the global default main context
`GMemoryMonitor` is a singleton, which means we can’t use the usual
approach of emitting signals in the thread-default main context from the
time of construction of the object.

The next best thing is to emit them in the global default main context.
For many applications, this will be exactly what they are expecting. For
multi-threaded applications, they will need to implement their own
thread safety in the signal handler, but they would have to do that
anyway.

Currently, the signals are emitted in the GLib worker thread (for the
PSI and poll implementations of `GMemoryMonitor`) — this is the worst
option, because it means that third party signal handlers could block
the worker thread (which is precisely what the worker thread is meant to
avoid).

Signed-off-by: Philip Withnall <pwithnall@gnome.org>
2025-07-23 13:27:58 +01:00
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