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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1994, by Sun Microsytems, Inc.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Includes
*/
#include "prb_internals.h"
/*
* Globals
* Memory that prex uses to store combinations in target process
*/
#define INITMEMSZ 2048
static char initial_memory[INITMEMSZ];
static tnf_memseg_t initial_memseg = {
initial_memory,
initial_memory + INITMEMSZ,
DEFAULTMUTEX,
0
};
tnf_memseg_t * __tnf_probe_memseg_p = &initial_memseg;
/*
* __tnf_probe_alloc() - allocates memory from the global pool
*/
char *
__tnf_probe_alloc(size_t size)
{
tnf_memseg_t * memseg_p = __tnf_probe_memseg_p;
char * ptr;
ptr = NULL;
mutex_lock(&memseg_p->i_lock);
memseg_p->i_reqsz = size;
if ((memseg_p->min_p + size) <= memseg_p->max_p) {
ptr = memseg_p->min_p;
memseg_p->min_p += size;
}
memseg_p->i_reqsz = 0;
mutex_unlock(&memseg_p->i_lock);
return (ptr);
} /* end __tnf_probe_alloc */
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