lockless user data cache
yac is a fast, lock-free, shared memory user data cache for PHP. it can be used to replace APC or local memcached.
- Implemnented CAS based lock-free protection
- Use SSE4.2 _mm_crc32 instead of normal crc32 to make speedup
- Some optimization to avoding memory usage
- Fixed PECL package (missed yac_atomic.h)