My UI is bound to a specific instance of GSettings (let’s call it mysettings). I have a different thread that will need to read some of those settings (via g_settings_get_value): is it safe to pass mysettings to the thread? If not, what is the suggested approach? Create two different instances and pass one to the thread?
GSettings is not thread-safe, so you should use a different GSettings instance per thread. You should create the instance for each thread in that thread itself, as signal emissions from GSettings are done in the thread where the GSettings object was created. (Assuming you have one GMainContext per thread.)
In general, nothing in GLib/GIO is thread-safe unless explicitly stated.
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Good to know: thank you for the info.
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