slabs.h

memcached是一个高性能的分布式的内存对象缓存系统

/* slabs memory allocation */

/* Init the subsystem. 1st argument is the limit on no. of bytes to allocate,
   0 if no limit. 2nd argument is the growth factor; each slab will use a chunk
   size equal to the previous slab's chunk size times this factor. */
void slabs_init(const size_t limit, const double factor);


/*
 * Given object size, return id to use when allocating/freeing memory for object
 * 0 means error: can't store such a large object
 */

unsigned int slabs_clsid(const size_t size);

/* Allocate object of given length. 0 on error */ /*@null@*/
void *do_slabs_alloc(const size_t size);

/* Free previously allocated object */
void do_slabs_free(void *ptr, size_t size);

/* Fill buffer with stats */ /*@null@*/
char* do_slabs_stats(int *buflen);

/* Request some slab be moved between classes
  1 = success
   0 = fail
   -1 = tried. busy. send again shortly. */
int do_slabs_reassign(unsigned char srcid, unsigned char dstid);