allocate.c File Reference

Wrapper for malloc. More...

#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include "allocate.h"
#include "mshell.h"

Go to the source code of this file.

Functions
void *	allocate (int elems, int size)
	Allocate memory. More...
void	deallocate (void *p)
	Free allocated memory. More...

Detailed Description

Author

Thorsten Koch

Id:

allocate.c,v 1.7 2004/06/17 08:20:44 bzfkocht Exp

Definition in file allocate.c.

Function Documentation

void* allocate	(	int	elems,
		int	size
	)

If no memory is available the program will be terminated. The minimum allocation is 1 byte. Memory is initialized to zero, or false in case of bool.

Parameters

elems	number of elements
size	size of one element in bytes

Returns

pointer to memory area of min elems * size bytes

Definition at line 23 of file allocate.c.

{
   void* p;

   assert(elems > 0);
   assert(size  > 0);

   if (NULL == (p = calloc((size_t)elems, (size_t)size)))
   {
      perror("allocate");
      exit(EXIT_FAILURE);
   }
   assert(p != NULL);
   
   return p;
}

void deallocate

(

void *

p

)

Releases the previous allocated memory. It should only be used with memory that has been allocated by allocate .

Parameters

p	Pointer to memory area that was previously returned by allocate

Definition at line 47 of file allocate.c.

{
   assert(p != NULL);
   
   free(p);
}