xenocara/xserver/hw/dmx/glxProxy/glxutil.c

/*
 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice including the dates of first publication and
 * either this permission notice or a reference to
 * http://oss.sgi.com/projects/FreeB/
 * shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * Except as contained in this notice, the name of Silicon Graphics, Inc.
 * shall not be used in advertising or otherwise to promote the sale, use or
 * other dealings in this Software without prior written authorization from
 * Silicon Graphics, Inc.
 */

#include "glxserver.h"
#include <GL/glxtokens.h>
#include <pixmapstr.h>
#include <windowstr.h>
#include "glxutil.h"
#include <stdlib.h>

/************************************************************************/

void __glXNop(void) {}

/************************************************************************/

/* Memory Allocation for GLX */

void *
__glXMalloc(size_t size)
{
    void *addr;

    if (size == 0) {
	return NULL;
    }
    addr = malloc(size);
    if (addr == NULL) {
	/* XXX: handle out of memory error */
	return NULL;
    }
    return addr;
}

void *
__glXCalloc(size_t numElements, size_t elementSize)
{
    void *addr;
    size_t size;

    if ((numElements == 0) || (elementSize == 0)) {
	return NULL;
    }
    addr = calloc(numElements, elementSize);
    if (addr == NULL) {
	/* XXX: handle out of memory error */
	return NULL;
    }
    return addr;
}

void *
__glXRealloc(void *addr, size_t newSize)
{
    void *newAddr;

    if (addr) {
	if (newSize == 0) {
	    xfree(addr);
	    return NULL;
	} else {
	    newAddr = realloc(addr, newSize);
	}
    } else {
	if (newSize == 0) {
	    return NULL;
	} else {
	    newAddr = malloc(newSize);
	}
    }
    if (newAddr == NULL) {
	return NULL;	/* XXX: out of memory */
    }

    return newAddr;
}

void
__glXFree(void *addr)
{
    if (addr) {
	free(addr);
    }
}