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Added custom allocator support

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This commit is contained in:
Kayne Ruse
2022-11-19 08:18:45 +00:00
parent 0b57f7efe7
commit 4518b59417
4 changed files with 75 additions and 9 deletions
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25
source/memory.c
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@@ -5,7 +5,8 @@
#include <stdio.h>
#include <stdlib.h>
void* reallocate(void* pointer, size_t oldSize, size_t newSize) {
//default allocator
void* defaultAllocator(void* pointer, size_t oldSize, size_t newSize) {
if (newSize == 0 && oldSize == 0) {
//causes issues, so just skip out with a NO-OP
return NULL;
@@ -20,10 +21,30 @@ void* reallocate(void* pointer, size_t oldSize, size_t newSize) {
void* mem = realloc(pointer, newSize);
if (mem == NULL) {
fprintf(stderr, ERROR "[internal]Memory allocation error (requested %d for %ld, replacing %d)\n" ERROR, (int)newSize, (long int)pointer, (int)oldSize);
fprintf(stderr, ERROR "[internal] Memory allocation error (requested %d for %ld, replacing %d)\n" RESET, (int)newSize, (long int)pointer, (int)oldSize);
exit(-1);
}
return mem;
}
//exposed API
static AllocatorFn allocator = defaultAllocator;
void setAllocator(AllocatorFn fn) {
if (fn == NULL) {
fprintf(stderr, ERROR "[internal] Memory allocator error (can't be null)\n" RESET);
exit(-1);
}
if (fn == reallocate) {
fprintf(stderr, ERROR "[internal] Memory allocator error (can't loop the reallocate function)\n" RESET);
exit(-1);
}
allocator = fn;
}
void* reallocate(void* pointer, size_t oldSize, size_t newSize) {
return allocator(pointer, oldSize, newSize);
}