diff options
Diffstat (limited to 'src/std/mem.c')
| -rw-r--r-- | src/std/mem.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/src/std/mem.c b/src/std/mem.c index c30f76d..f5b92d4 100644 --- a/src/std/mem.c +++ b/src/std/mem.c @@ -9,8 +9,8 @@ #endif void* arena_alloc_align(arena* a, size_t size, size_t align) { - ptrdiff_t padding = -(uintptr_t)a->begin & (align - 1); - ptrdiff_t available = a->end - a->begin - padding; + ptrdiff_t padding = -(uintptr_t)a->curr & (align - 1); + ptrdiff_t available = a->end - a->curr - padding; TRACE("Padding %td available %td", padding, available); if (available < 0 || (ptrdiff_t)size > available) { ERROR_EXIT("Arena ran out of memory\n"); @@ -22,5 +22,11 @@ void* arena_alloc_align(arena* a, size_t size, size_t align) { void* arena_alloc(arena* a, size_t size) { return arena_alloc_align(a, size, DEFAULT_ALIGNMENT); } arena arena_create(void* backing_buffer, size_t capacity) { - return (arena){ .begin = backing_buffer, .end = backing_buffer + (ptrdiff_t)capacity }; + return (arena){ .begin = backing_buffer, + .curr = backing_buffer, + .end = backing_buffer + (ptrdiff_t)capacity }; +} + +void arena_free_all(arena* a) { + a->curr = a->begin; // pop everything at once and reset to the start. }
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