cache.h

/* -*- Mode: C; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
#ifndef CACHE_H
#define CACHE_H
#include <pthread.h>

#ifdef HAVE_UMEM_H
#include <umem.h>
#define cache_t umem_cache_t
#define cache_alloc(a) umem_cache_alloc(a, UMEM_DEFAULT)
#define cache_free(a, b) umem_cache_free(a, b)
#define cache_create(a,b,c,d,e) umem_cache_create((char*)a, b, c, d, e, NULL, NULL, NULL, 0)
#define cache_destroy(a) umem_cache_destroy(a);

#else

#ifndef NDEBUG
/* may be used for debug purposes */
extern int cache_error;
#endif

typedef int cache_constructor_t(void* obj, void* notused1, int notused2);
typedef void cache_destructor_t(void* obj, void* notused);

typedef struct {
    pthread_mutex_t mutex;
    char *name;
    void **ptr;
    size_t bufsize;
    int freetotal;
    int freecurr;
    cache_constructor_t* constructor;
    cache_destructor_t* destructor;
} cache_t;

cache_t* cache_create(const char* name, size_t bufsize, size_t align,
                      cache_constructor_t* constructor,
                      cache_destructor_t* destructor);
void cache_destroy(cache_t* handle);
void* cache_alloc(cache_t* handle);
void cache_free(cache_t* handle, void* ptr);
#endif

#endif