-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Roger Binns wrote: > I am trying to release the GIL in a multi-threaded program (efforts > detailed below) without any success.
The ultimate cause was that the program forked to go into daemon mode. I had called PyOS_AfterFork() as the documents directed. What I hadn't realised (and isn't documented) is that AfterFork() reinitialises the Python threading state by making a new GIL and acquires it. The acquiring bit meant none of my other threads could ever get it. It is still unclear from the docs exactly which combination of functions dealing with threadstate, threads and lock you need to call to just unilaterally give up the GIL (ie when you don't have following block that wants to reacquire the GIL) Roger -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFGVNW0mOOfHg372QQRAuyOAJ4pCCIK779XgvaUdKBtSa+nHElrHQCgiueP n/0uMFCSH3SrQhMXdm2Jb/o= =uh4D -----END PGP SIGNATURE----- -- http://mail.python.org/mailman/listinfo/python-list
