krzosa/first
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add bootstrap exclusive arena

Browse Source
This commit is contained in:
Krzosa Karol
2023-12-31 19:41:49 +01:00
parent 49068c9818
commit 3d074ce0ac
3 changed files with 39 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
arena.c
View File

@@ -156,6 +156,13 @@ MA_API MA_Arena *MA_Bootstrap(void) {
return arena;
}
MA_API M_Allocator MA_BootstrapExclusive(void) {
MA_Arena bootstrap_arena = {0};
MA_Arena *arena = MA_PushStruct(&bootstrap_arena, MA_Arena);
*arena = bootstrap_arena;
return MA_GetExclusiveAllocator(arena);
}
MA_API void MA_InitFromBuffer(MA_Arena *arena, void *buffer, size_t size) {
arena->memory.data = (uint8_t *)buffer;
arena->memory.commit = size;
@@ -285,10 +292,11 @@ MA_API void *MA_AllocatorProc(void *allocator, M_AllocatorOp kind, void *p, size
MA_API void *MA_ExclusiveAllocatorProc(void *allocator, M_AllocatorOp kind, void *p, size_t size, size_t old_size) {
MA_Arena *arena = (MA_Arena *)allocator;
if (kind == M_AllocatorOp_Reallocate) {
if (size > arena->len) {
size_t size_to_push = size - arena->len;
MA_PushSizeNonZeroed(arena, size_to_push);
return arena->memory.data;
if (size > old_size) {
size_t size_to_push = size - old_size;
void *result = MA_PushSizeNonZeroed(arena, size_to_push);
if (!p) p = result;
return p;
}
}