Description of problem: Speech Dispatcher has a Python API (available via speech-dispatcher-python) that lets you pass messages from Python to speechd for speaking. You can pass to the speak() method a callback, which will be called at different points, passing along a useful CallbackType, one of: speechd.CallbackType.BEGIN speechd.CallbackType.END speechd.CallbackType.CANCEL The issue is that the callback function is not being consistently called when the message begins, so code that should run when passed CallbackType.BEGIN does not. It is called occasionally, but rarely. The issue exists in CVS HEAD for speech-dispatcher, and is explained in the source code, in src/python/speechd/client.py in def speak(...) ------------------------------------- result = self._conn.send_data(text) if callback: msg_id = int(result[2][0]) # TODO: Here we risk, that the callback arrives earlier, than we # add the item to `self._callbacks'. Such a situation will lead to # the callback being ignored. self._lock.acquire() try: self._callbacks[msg_id] = (callback, event_types) finally: self._lock.release() return result --------------------------------------- Version-Release number of selected component (if applicable): speech-dispatcher-python-0.6.6-18.fc10.i386 speech-dispatcher-0.6.6-18.fc10.i386 How reproducible: * 90% of the time; it seems that the more in-memory it is, the faster it goes, and the more times it misses the callback's msg_id in the code noted above. Steps to Reproduce: 1. setup speech-dispatcher (there are some hurdles...) 2. run test script 3. run it a bunch more times! Actual results: [richard@yojimbo py]$ python CallbackTest.py Done. end Expected results: [richard@yojimbo py]$ python CallbackTest.py Done. begin end Additional info: I tested this on two Fedora 10 installations and have the same result. Also, pdb is a fun and informative debugger. With Bonobo being deprecated in GNOME, gnome-speech will probably be deprecated in favour of something like speech-dispatcher. Some apps rely on being able to act upon the beginning of a message. Bad bug! I will post a message to their mailing list.
Created attachment 338307 [details] Test Case Here's the test case, in python
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I'm not reproducing it nearly as often now, but still have a couple times, and it doesn't seem that the relevant code has changed.
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Fedora 12 changed to end-of-life (EOL) status on 2010-12-02. Fedora 12 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed.