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#include <unistd.h>
#include <sys/mman.h>
#include <stdio.h>
#include <stdlib.h>
 
#ifdef L_calloc_dbg
 
void *
calloc_dbg(size_t num, size_t size, char * function, char * file, int line)
{
	void * ptr;
	fprintf(stderr, "calloc of %d bytes at %s @%s:%d = ", num*size, function, file, line);
	ptr = calloc(num,size);
	fprtinf(stderr, "%p\n", ptr);
	return ptr;
}
 
#endif
 
#ifdef L_malloc_dbg
 
void *
malloc_dbg(size_t len, char * function, char * file, int line)
{
	void * result;
	fprintf(stderr, "malloc of %d bytes at %s @%s:%d = ", len, function, file, line);
	result = malloc(len);
	fprintf(stderr, "%p\n", result);    
	return result;
}
 
#endif
 
#ifdef L_free_dbg
 
void
free_dbg(void * ptr, char * function, char * file, int line)
{
	fprintf(stderr, "free of %p at %s @%s:%d\n", ptr, function, file, line);
  	free(ptr);
}
 
#endif
 
 
#ifdef L_calloc
 
void *
calloc(size_t num, size_t size)
{
	void * ptr = malloc(num*size);
	if (ptr)
		memset(ptr, 0, num*size);
	return ptr;
}
 
#endif
 
#ifdef L_malloc
 
void *
malloc(size_t len)
{
  void * result = mmap((void *)0, len, PROT_READ | PROT_WRITE,
                 MAP_SHARED | MAP_ANONYMOUS, 0, 0);
  if (result == (void*)-1)
    return 0;
 
  return result;
}
 
#endif
 
#ifdef L_free
 
void
free(void * ptr)
{
  munmap(ptr, 0);
}
 
#endif