Message177955
Antoine reminded me about a lock. In Python implementation it needed because linked list modifications are not atomic. In C implementation linked list modifications are atomic. However dict operations can call Python code and therefore they are not atomic. I don't know what bad things can happened with concurrent cache updating, however using lock will be safer and cheap enought.
Please add lock field to lru_cache_object and use it as in Python implementation. If no one can prove that a lock is not needed. |
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Date |
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2012-12-22 21:01:01 | serhiy.storchaka | set | recipients:
+ serhiy.storchaka, rhettinger, amaury.forgeotdarc, pitrou, giampaolo.rodola, ezio.melotti, asvetlov, meador.inge, anacrolix, eric.snow, kachayev |
2012-12-22 21:01:00 | serhiy.storchaka | set | messageid: <1356210060.73.0.913726011151.issue14373@psf.upfronthosting.co.za> |
2012-12-22 21:01:00 | serhiy.storchaka | link | issue14373 messages |
2012-12-22 21:00:59 | serhiy.storchaka | create | |
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