mem.c

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/*************************************************************************
 * Copyright (c) 2011 AT&T Intellectual Property 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors: Details at https://graphviz.org
 *************************************************************************/
 
#include <cgraph/cghdr.h>
#include <stdlib.h>
 
void *agalloc(Agraph_t * g, size_t size)
{
    (void)g;
 
    void *mem = calloc(1, size);
    if (mem == NULL)
         agerrorf("memory allocation failure");
    return mem;
}
 
void *agrealloc(Agraph_t * g, void *ptr, size_t oldsize, size_t size)
{
    void *mem;
 
    if (size > 0) {
        if (ptr == 0)
            mem = agalloc(g, size);
        else {
            mem = realloc(ptr, size);
            if (mem != NULL && size > oldsize) {
                memset((char*)mem + oldsize, 0, size - oldsize);
            }
        }
        if (mem == NULL)
             agerrorf("memory re-allocation failure");
    } else
        mem = NULL;
    return mem;
}
 
void agfree(Agraph_t * g, void *ptr)
{
    (void)g;
 
    if (ptr)
        free(ptr);
}