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authorMitya Selivanov <automainint@guattari.tech>2024-07-14 21:12:37 +0200
committerMitya Selivanov <automainint@guattari.tech>2024-07-14 21:12:37 +0200
commit30740ca4131d1f574718262451b4410207dc8d4e (patch)
treefc88b16a216079397ad85b9c6b1a1c1c5712a814 /source/kit/allocator.c
parent5e3c99bb1cf1d03ea006300121265571f5008fd2 (diff)
downloadsaw-30740ca4131d1f574718262451b4410207dc8d4e.zip
Reworking the build system
Diffstat (limited to 'source/kit/allocator.c')
-rw-r--r--source/kit/allocator.c199
1 files changed, 0 insertions, 199 deletions
diff --git a/source/kit/allocator.c b/source/kit/allocator.c
deleted file mode 100644
index 9fd7bad..0000000
--- a/source/kit/allocator.c
+++ /dev/null
@@ -1,199 +0,0 @@
-#include "allocator.h"
-
-#include <assert.h>
-#include <string.h>
-
-#ifndef KIT_DISABLE_SYSTEM_MALLOC
-# include <stdlib.h>
-#endif
-
-static void *kit_allocate_default_(i32 request, i64 size,
- i64 previous_size, void *pointer) {
-#ifndef KIT_DISABLE_SYSTEM_MALLOC
- switch (request) {
- case KIT_ALLOCATE:
- case KIT_ALLOCATE_ZERO: {
- assert(size >= 0);
- assert(previous_size == 0);
- assert(pointer == NULL);
-
- if (size <= 0)
- return NULL;
-
- void *p = malloc(size);
-
- if (p != NULL && request == KIT_ALLOCATE_ZERO)
- memset(p, 0, size);
-
- return p;
- }
-
- case KIT_REALLOCATE:
- case KIT_REALLOCATE_ZERO: {
- assert(size >= 0);
- assert(previous_size != 0 || pointer == NULL);
- assert(previous_size == 0 || pointer != NULL);
-
- if (previous_size == 0 && pointer != NULL)
- return NULL;
- if (previous_size != 0 && pointer == NULL)
- return NULL;
- if (size == previous_size)
- return pointer;
-
- u8 *p = NULL;
-
- if (size > 0) {
- p = (u8 *) malloc(size);
-
- if (p != NULL) {
- if (size > 0 && previous_size > 0)
- memcpy(p, pointer,
- size < previous_size ? size : previous_size);
- if (request == KIT_REALLOCATE_ZERO && size > previous_size)
- memset(p + previous_size, 0, size - previous_size);
- }
- }
-
- free(pointer);
-
- return p;
- }
-
- case KIT_DEALLOCATE:
- assert(size == 0);
- assert(pointer != NULL);
- if (pointer != NULL)
- free(pointer);
- return NULL;
-
- case KIT_DEALLOCATE_ALL:
- // Do nothing.
- //
- return NULL;
-
- default:;
- }
-#endif
-
- assert(0);
- return NULL;
-}
-
-static void *kit_allocate_from_buffer_(kit_allocator_t *alloc,
- i32 request, i64 size,
- i64 previous_size,
- void *pointer) {
- assert(alloc != NULL);
- assert(pointer == NULL || pointer < alloc->data);
-
- if (alloc == NULL)
- return NULL;
-
- switch (request) {
- case KIT_ALLOCATE:
- case KIT_ALLOCATE_ZERO: {
- assert(size >= 0);
- assert(previous_size == 0);
- assert(pointer == NULL);
-
- if (size <= 0)
- return NULL;
-
- if (alloc->size < size)
- return NULL;
-
- void *p = alloc->data;
- alloc->bytes += size;
- alloc->size -= size;
-
- if (request == KIT_ALLOCATE_ZERO)
- memset(p, 0, size);
-
- return p;
- }
-
- case KIT_REALLOCATE:
- case KIT_REALLOCATE_ZERO: {
- assert(size >= 0);
- assert(previous_size != 0 || pointer == NULL);
- assert(previous_size == 0 || pointer != NULL);
-
- if (size <= 0)
- return NULL;
- if (size <= previous_size)
- return pointer;
- if (previous_size == 0 && pointer != NULL)
- return NULL;
- if (previous_size != 0 && pointer == NULL)
- return NULL;
-
- if ((u8 *) pointer + previous_size == alloc->data) {
- if (alloc->size < size - previous_size)
- return NULL;
- alloc->bytes += size - previous_size;
- alloc->size -= size - previous_size;
- return pointer;
- }
-
- if (alloc->size < size)
- return NULL;
-
- u8 *p = alloc->bytes;
- alloc->bytes += size;
- alloc->size -= size;
-
- if (previous_size > 0)
- memcpy(p, pointer, previous_size);
- if (request == KIT_REALLOCATE_ZERO)
- memset(p + previous_size, 0, size - previous_size);
-
- return p;
- }
-
- case KIT_DEALLOCATE:
- case KIT_DEALLOCATE_ALL: return NULL;
-
- default:;
- }
-
- assert(0);
- return NULL;
-}
-
-#ifndef KIT_ENABLE_CUSTOM_ALLOC_DISPATCH
-void *kit_alloc_dispatch(kit_allocator_t *alloc, i32 request,
- i64 size, i64 previous_size, void *pointer) {
- if (alloc == NULL)
- return kit_allocate_default_(request, size, previous_size,
- pointer);
-
- switch (alloc->type) {
- case KIT_ALLOC_TYPE_DEFAULT:
- return kit_allocate_default_(request, size, previous_size,
- pointer);
-
- case KIT_ALLOC_TYPE_BUFFER:
- return kit_allocate_from_buffer_(alloc, request,
- // alignment
- ((size + 7) / 8) * 8,
- previous_size, pointer);
-
- default:;
- }
-
- return NULL;
-}
-#endif
-
-kit_allocator_t kit_alloc_default(void) {
- return (kit_allocator_t) { .type = KIT_ALLOC_TYPE_DEFAULT,
- .size = 0,
- .data = NULL };
-}
-
-kit_allocator_t kit_alloc_buffer(i64 size, void *buffer) {
- return (kit_allocator_t) { .type = KIT_ALLOC_TYPE_BUFFER,
- .size = size,
- .data = buffer };
-}