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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#pragma ident "%Z%%M% %I% %E% SMI"
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#include "lint.h"
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#include <stdlib.h>
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#include <pthread.h>
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#include <errno.h>
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#include "mtlib.h"
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#include "libc.h"
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#include "tsd.h"
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typedef void (*pfrv_t)(void *);
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typedef struct {
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void *buf;
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size_t size;
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pfrv_t destructor;
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} tsdent_t;
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static void
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_free_tsdbuf(void *ptr)
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{
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tsdent_t *loc = ptr;
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pfrv_t destructor;
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void *p;
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int i;
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if (loc != NULL) {
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for (i = 0; i < _T_NUM_ENTRIES; i++) {
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if ((p = loc[i].buf) != NULL) {
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destructor = loc[i].destructor;
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if (destructor != NULL)
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destructor(p);
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lfree(p, loc[i].size);
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}
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}
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lfree(loc, _T_NUM_ENTRIES * sizeof (tsdent_t));
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}
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}
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void *
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tsdalloc(__tsd_item_t n, size_t size, pfrv_t destructor)
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{
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static thread_key_t key = THR_ONCE_KEY;
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tsdent_t *loc;
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void *p;
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int error;
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if ((uint_t)n >= _T_NUM_ENTRIES) {
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errno = ENOTSUP;
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return (NULL);
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}
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if ((error = thr_keycreate_once(&key, _free_tsdbuf)) != 0) {
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errno = error;
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return (NULL);
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}
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if ((loc = pthread_getspecific(key)) != NULL) {
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if ((p = loc[n].buf) != NULL)
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return (p);
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} else {
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/* allocate our array of pointers */
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loc = lmalloc(_T_NUM_ENTRIES * sizeof (tsdent_t));
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if (loc == NULL)
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return (NULL);
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if ((error = thr_setspecific(key, loc)) != 0) {
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lfree(loc, _T_NUM_ENTRIES * sizeof (tsdent_t));
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errno = error;
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return (NULL);
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}
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}
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/* allocate item n */
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loc[n].buf = p = lmalloc(size);
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loc[n].size = size;
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loc[n].destructor = destructor;
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return (p);
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}
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