Re: [APC-DEV] Re: [PECL-CVS] svn: /pecl/apc/trunk/ apc_cache.c apc_cache.h php_apc.c php_apc.h

shire wrote: > > hrm, yeah I don't think we can get away without the lock here, simply > because of the (*slot)->next/key type pointer usage. I believe the > structure would allow that to be an invalid pointer if it's still in the > process of being updated, inserted, removed etc. I guess that is true. I was thinking even if a slot is deleted, it would be on the pending list and the *next would still be valid and take us back into the cache entries, but that is only true if the ref_count is non-zero, otherwise the entry is destroyed right away. With the lock though, apc_exists is only going to be faster than apc_fetch() by a memcpy (or many memcpys for an array). -Rasmus