STINNER Victor <[email protected]> added the comment:
> I also wonder about the performance cost of a recursive lock.
An alternative is to disable the garbage collector in malloc():
def malloc(self, size):
...
enabled = gc.isenabled()
if enabled:
# disable the garbage collector to avoid a deadlock if block
# is freed (if self.free() is called)
gc.disable()
try:
with self._lock:
size = self._roundup(max(size,1), self._alignment)
...
return block
finally:
if enabled:
gc.enable()
gc.disable() and gc.enable() just set an internal flag and so should be fast.
----------
nosy: +haypo
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<http://bugs.python.org/issue12352>
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