kest_bump_arena.h

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#ifndef KEST_BUMP_ARENA_H_
#define KEST_BUMP_ARENA_H_
 
#define KEST_BUMP_ARENA_ALLOC_ALIGN 4
#define KEST_BUMP_ARENA_INIT_ALIGN  64
 
#if (KEST_BUMP_ARENA_ALLOC_ALIGN & (KEST_BUMP_ARENA_ALLOC_ALIGN - 1)) != 0
#error KEST_BUMP_ARENA_ALLOC_ALIGN must be power of two
#endif
#if (KEST_BUMP_ARENA_INIT_ALIGN & (KEST_BUMP_ARENA_INIT_ALIGN - 1)) != 0
#error KEST_BUMP_ARENA_INIT_ALIGN must be power of two
#endif
 
typedef struct {
    void *base_ua;
    void *arena;
    size_t pos;
    size_t capacity;
    
    kest_allocator alloc;
} kest_bump_arena;
 
int kest_bump_arena_init_empty(kest_bump_arena *arena);
int kest_bump_arena_init(kest_bump_arena *arena, size_t capacity);
 
void *kest_bump_arena_alloc(kest_bump_arena *arena, size_t size);
void *kest_bump_arena_realloc(kest_bump_arena *arena, void *p, size_t size);
void kest_bump_arena_free(kest_bump_arena *arena);
 
int   kest_bump_arena_reset(kest_bump_arena *arena);
int   kest_bump_arena_destroy(kest_bump_arena *arena);
 
#endif