mirror of https://github.com/flysand7/ciabatta.git
69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
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static void *_null_allocator_proc(void *ctx, int optype, void *old_ptr, u64 old_size, u64 size, u64 alignment) {
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return NULL;
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}
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Cia_Allocator cia_allocator_null() {
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Cia_Allocator allocator = {
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.ctx = NULL,
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.proc = _null_allocator_proc,
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};
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return allocator;
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}
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static void *_page_allocator_proc(void *ctx, int optype, void *old_ptr, u64 old_size, u64 size, u64 alignment) {
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switch(optype) {
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case CIA_MEM_OP_ALLOC: {
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void *addr;
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if(alignment > 0x1000) {
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return NULL;
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}
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_RT_Status status = _rt_mem_alloc(NULL, size, &addr);
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if(status != _RT_STATUS_OK) {
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return NULL;
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}
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return addr;
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} break;
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case CIA_MEM_OP_FREE: {
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_rt_mem_free(old_ptr, old_size);
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} break;
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case CIA_MEM_OP_FREE_ALL: {
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return NULL;
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} break;
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case CIA_MEM_OP_RESIZE: {
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return NULL;
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} break;
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}
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return NULL;
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}
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Cia_Allocator cia_allocator_pages() {
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Cia_Allocator allocator = {
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.ctx = NULL,
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.proc = _page_allocator_proc,
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};
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return allocator;
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}
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void *cia_allocator_alloc(Cia_Allocator *alloc, u64 size, u64 alignment) {
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return alloc->proc(alloc->ctx, CIA_MEM_OP_ALLOC, NULL, 0, size, alignment);
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}
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void cia_allocator_free_size(Cia_Allocator *alloc, void *region_ptr, u64 region_size) {
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alloc->proc(alloc->ctx, CIA_MEM_OP_FREE, region_ptr, region_size, 0, 1);
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}
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void cia_allocator_free(Cia_Allocator *alloc, void *region_ptr) {
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alloc->proc(alloc->ctx, CIA_MEM_OP_FREE, region_ptr, 0, 0, 1);
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}
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void cia_allocator_free_all(Cia_Allocator *alloc) {
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alloc->proc(alloc->ctx, CIA_MEM_OP_FREE_ALL, NULL, 0, 0, 1);
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}
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void *cia_allocator_resize(Cia_Allocator *alloc, void *old_ptr, u64 old_size, u64 new_size, u64 alignment) {
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return alloc->proc(alloc->ctx, CIA_MEM_OP_RESIZE, old_ptr, old_size, new_size, alignment);
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}
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