#include "mem_libc.h"
#include "aliases.h"
#include "mem_allocator.h"
#include <stdlib.h>
#include <string.h>

internal void *mem_libc_alloc(u64 size, void *alloc_obj);
internal void *mem_libc_alloc_aligned(u64 size, u64 alignment, void *alloc_obj);
internal void *mem_libc_realloc(void *ptr, u64 size, void *alloc_obj);
internal void mem_libc_free(void **ptr, void *alloc_obj);

Allocator wapp_mem_libc_allocator(void) {
  return (Allocator){
      .obj = NULL,
      .alloc = mem_libc_alloc,
      .alloc_aligned = mem_libc_alloc_aligned,
      .realloc = mem_libc_realloc,
      .realloc_aligned = NULL,
      .free = mem_libc_free,
  };
}

internal void *mem_libc_alloc(u64 size, void *alloc_obj) {
  return calloc(1, size);
}

internal void *mem_libc_alloc_aligned(u64 size, u64 alignment,
                                      void *alloc_obj) {
  void *output = aligned_alloc(alignment, size);
  if (output) {
    memset(output, 0, size);
  }

  return output;
}

internal void *mem_libc_realloc(void *ptr, u64 size, void *alloc_obj) {
  return realloc(ptr, size);
}

internal void mem_libc_free(void **ptr, void *alloc_obj) {
  if (!ptr || !(*ptr)) {
    return;
  }

  free(*ptr);
  *ptr = NULL;
}