diff options
Diffstat (limited to 'src/alloc.h')
| -rw-r--r-- | src/alloc.h | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/src/alloc.h b/src/alloc.h index 80e2384..004e6ec 100644 --- a/src/alloc.h +++ b/src/alloc.h @@ -1,13 +1,29 @@ #ifndef ORYX_ALLOC_H #define ORYX_ALLOC_H +#include <stdalign.h> #include <stddef.h> #include "common.h" +typedef struct _arena *arena; + /* Allocate a buffer of NMEMB elements of size SIZE. If PTR is non-null then reallocate the buffer it points to. Aborts on out-of-memory or overflow. */ void *bufalloc(void *ptr, size_t nmemb, size_t size) - __attribute__((returns_nonnull, alloc_size(2, 3))); + __attribute__((returns_nonnull, warn_unused_result, alloc_size(2, 3))); + +/* Allocate a buffer of NMEMB elements of size SIZE with alignment ALIGN using + the arena-allocator A. */ +void *arena_alloc(arena *a, size_t nmemb, size_t size, size_t align) + __attribute__((returns_nonnull, warn_unused_result, malloc, + alloc_size(2, 3), alloc_align(4))); + +/* Deallocate all memory associated with the arena A. */ +void arena_free(arena *a) + __attribute__((nonnull)); + +/* Allocate a buffer of N elements of type T using the arena-allocator A. */ +#define arena_new(a, T, n) ((T *)arena_alloc((a), (n), sizeof(T), alignof(T))) #endif /* !ORYX_ALLOC_H */ |