#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <gclib/mem.h>

/*
 * A memory allocator that aborts on failure (so that the caller never
 * needs to handle out of memory, which we assume is very unlikely to
 * happen under normal circumstances on any modern machine).
 */
void *mem_alloc(size_t nmemb,size_t size)
{
    void *ptr=malloc(nmemb*size);
    if (!ptr)
    {
	fprintf(stderr,
	  "Not enough memory to allocate %lu elements of %lu bytes.\n",
	  (unsigned long)nmemb,(unsigned long)size);
	abort();
    }
    return ptr;
}

/*
 * As mem_new, but new memory is cleared to zero.
 */
void *mem_alloc0(size_t nmemb,size_t size)
{
    void *ptr=calloc(nmemb,size);
    if (!ptr)
    {
	fprintf(stderr,
	  "Not enough memory to allocate %lu elements of %lu bytes.\n",
	  (unsigned long)nmemb,(unsigned long)size);
	abort();
    }
    return ptr;
}

/*
 * Grow or shrink a memory block, aborting on failure.
 */
void *mem_realloc(void *ptr,size_t nmemb,size_t size)
{
    ptr=realloc(ptr,nmemb*size);
    if (!ptr)
    {
	fprintf(stderr,
	  "Not enough memory to allocate %lu elements of %lu bytes.\n",
	  (unsigned long)nmemb,(unsigned long)size);
	abort();
    }
    return ptr;
}