diff options
Diffstat (limited to 'src/lib/third_party/include/lruc.h')
-rw-r--r-- | src/lib/third_party/include/lruc.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/lib/third_party/include/lruc.h b/src/lib/third_party/include/lruc.h new file mode 100644 index 000000000..55fb271fe --- /dev/null +++ b/src/lib/third_party/include/lruc.h @@ -0,0 +1,55 @@ +#include <pthread.h> +#include <stdint.h> +#include <time.h> + +#ifndef __lruc_header__ +#define __lruc_header__ + +// ------------------------------------------ +// errors +// ------------------------------------------ +typedef enum { + LRUC_NO_ERROR = 0, + LRUC_MISSING_CACHE, + LRUC_MISSING_KEY, + LRUC_MISSING_VALUE, + LRUC_PTHREAD_ERROR, + LRUC_VALUE_TOO_LARGE +} lruc_error; + + +// ------------------------------------------ +// types +// ------------------------------------------ +typedef struct { + void *value; + void *key; + uint32_t value_length; + uint32_t key_length; + uint64_t access_count; + void *next; +} lruc_item; + +typedef struct { + lruc_item **items; + uint64_t access_count; + uint64_t free_memory; + uint64_t total_memory; + uint64_t average_item_length; + uint32_t hash_table_size; + time_t seed; + lruc_item *free_items; + pthread_mutex_t *mutex; +} lruc; + + +// ------------------------------------------ +// api +// ------------------------------------------ +lruc *lruc_new(uint64_t cache_size, uint32_t average_length); +lruc_error lruc_free(lruc *cache); +lruc_error lruc_set(lruc *cache, void *key, uint32_t key_length, void *value, uint32_t value_length); +lruc_error lruc_get(lruc *cache, void *key, uint32_t key_length, void **value); +lruc_error lruc_delete(lruc *cache, void *key, uint32_t key_length); + +#endif |