ThreadWrapper.getIoChannel

Allow wrapper to notify when an execution job is finished, by making its exec ID readable through a new #GIOChannel. This function is useful when the notification needs to be included into a main loop. This also notifies that signals (emitted by objects in wrapper's internal thread) are available.

The returned #GIOChannel will have something to read everytime an execution job is finished for an execution job submitted from the calling thread. The user whould read #GdaThreadNotification structures from the channel and analyse its contents to call [gda.thread_wrapper.ThreadWrapper.iterate] or [gda.thread_wrapper.ThreadWrapper.fetchResult].

Note1: the new communication channel will only be operational for jobs submitted after this function returns, and for signals which have been connected after this function returns. A safe practice is to call this function before the wrapper object has been used.

Note2: this function will return the same #GIOChannel everytime it's called from the same thread.

Note3: if the usage of the returned #GIOChannel reveals an error, then [glib.iochannel.IOChannel.shutdown] and [glib.iochannel.IOChannel.unref] should be called on the #GIOChannel to let wrapper know it should not use that object anymore.