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128 lines
3.4 KiB
C
128 lines
3.4 KiB
C
/* SPDX-License-Identifier: MPL-1.1 OR GPL-2.0-or-later */
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/*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is the Netscape Portable Runtime library.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1994-2000 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s): Silicon Graphics, Inc.
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*
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* Portions created by SGI are Copyright (C) 2000-2001 Silicon
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* Graphics, Inc. All Rights Reserved.
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU General Public License Version 2 or later (the
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* "GPL"), in which case the provisions of the GPL are applicable
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* instead of those above. If you wish to allow use of your
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* version of this file only under the terms of the GPL and not to
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* allow others to use your version of this file under the MPL,
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* indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by
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* the GPL. If you do not delete the provisions above, a recipient
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* may use your version of this file under either the MPL or the
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* GPL.
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*/
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/*
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* This file is derived directly from Netscape Communications Corporation,
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* and consists of extensive modifications made during the year(s) 1999-2000.
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*/
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#include <stdlib.h>
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#include <errno.h>
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#include "common.h"
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/*
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* Destructor table for per-thread private data
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*/
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static _st_destructor_t _st_destructors[ST_KEYS_MAX];
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static int key_max = 0;
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/*
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* Return a key to be used for thread specific data
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*/
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int st_key_create(int *keyp, _st_destructor_t destructor)
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{
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if (key_max >= ST_KEYS_MAX) {
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errno = EAGAIN;
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return -1;
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}
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*keyp = key_max++;
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_st_destructors[*keyp] = destructor;
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return 0;
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}
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int st_key_getlimit(void)
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{
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return ST_KEYS_MAX;
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}
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int st_thread_setspecific(int key, void *value)
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{
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_st_thread_t *me = _ST_CURRENT_THREAD();
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return st_thread_setspecific2(me, key, value);
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}
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int st_thread_setspecific2(_st_thread_t *me, int key, void *value)
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{
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if (key < 0 || key >= key_max) {
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errno = EINVAL;
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return -1;
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}
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if (value != me->private_data[key]) {
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/* free up previously set non-NULL data value */
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if (me->private_data[key] && _st_destructors[key]) {
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(*_st_destructors[key])(me->private_data[key]);
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}
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me->private_data[key] = value;
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}
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return 0;
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}
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void *st_thread_getspecific(int key)
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{
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if (key < 0 || key >= key_max)
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return NULL;
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return ((_ST_CURRENT_THREAD())->private_data[key]);
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}
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/*
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* Free up all per-thread private data
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*/
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void _st_thread_cleanup(_st_thread_t *thread)
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{
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int key;
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for (key = 0; key < key_max; key++) {
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if (thread->private_data[key] && _st_destructors[key]) {
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(*_st_destructors[key])(thread->private_data[key]);
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thread->private_data[key] = NULL;
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}
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}
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}
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