vmalloc.h

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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
 *************************************************************************/
 
#pragma once
 
#include <stddef.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
/*      Public header file for the virtual malloc package.
**
**      Written by Kiem-Phong Vo, kpv@research.att.com, 01/16/94.
*/
 
    typedef struct _vmalloc_s Vmalloc_t;
 
    struct _vmalloc_s {
        void **allocated;       /* pointers we have given out           */
        size_t size;    /* used entries in `allocated`          */
        size_t capacity;        /* available entries in `allocated`     */
    };
 
    extern Vmalloc_t *vmopen(void);
    extern void vmclose(Vmalloc_t*);
    extern void vmclear(Vmalloc_t*);
 
void *vmalloc(Vmalloc_t *vm, size_t size);
 
void vmfree(Vmalloc_t *vm, void *data);
 
    extern char *vmstrdup(Vmalloc_t *, const char *);
 
#ifdef __cplusplus
}
#endif