[issue4751] Patch for better thread support in hashlib

[Lukas Lueg]

Lukas Lueg <knabberknusperhaus at yahoo.de> added the comment:

I've modified haypo's patch as commented. The object's lock should be
free 99.9% of the time so we try non-blocking first and can thereby skip
 releasing and re-locking the gil (to avoid a deadlock).

Added file: http://bugs.python.org/file12587/hashlibopenssl_small_lock-4.diff

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue4751>
_______________________________________