1/*-------------------------------------------------------------------------
2 * drawElements Thread Library
3 * ---------------------------
4 *
5 * Copyright 2014 The Android Open Source Project
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 *      http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 *
19 *//*!
20 * \file
21 * \brief Unix implementation of thread-local storage.
22 *//*--------------------------------------------------------------------*/
23
24#include "deThreadLocal.h"
25
26#if (DE_OS == DE_OS_UNIX || DE_OS == DE_OS_OSX || DE_OS == DE_OS_ANDROID || DE_OS == DE_OS_SYMBIAN || DE_OS == DE_OS_IOS || DE_OS == DE_OS_QNX)
27
28#if !defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE < 500)
29#	error You are using too old posix API!
30#endif
31
32#include <pthread.h>
33
34DE_STATIC_ASSERT(sizeof(pthread_key_t) <= sizeof(deThreadLocal));
35
36/* \note 0 is valid pthread_key_t, but not valid for deThreadLocal */
37
38DE_INLINE deThreadLocal keyToThreadLocal (pthread_key_t key)
39{
40	return (deThreadLocal)(key + 1);
41}
42
43DE_INLINE pthread_key_t threadLocalToKey (deThreadLocal threadLocal)
44{
45	DE_ASSERT(threadLocal != 0);
46	return (pthread_key_t)(threadLocal - 1);
47}
48
49deThreadLocal deThreadLocal_create (void)
50{
51	pthread_key_t key = (pthread_key_t)0;
52	if (pthread_key_create(&key, DE_NULL) != 0)
53		return 0;
54	return keyToThreadLocal(key);
55}
56
57void deThreadLocal_destroy (deThreadLocal threadLocal)
58{
59	int ret = 0;
60	ret = pthread_key_delete(threadLocalToKey(threadLocal));
61	DE_ASSERT(ret == 0);
62	DE_UNREF(ret);
63}
64
65void* deThreadLocal_get (deThreadLocal threadLocal)
66{
67	return pthread_getspecific(threadLocalToKey(threadLocal));
68}
69
70void deThreadLocal_set (deThreadLocal threadLocal, void* value)
71{
72	int ret = 0;
73	ret = pthread_setspecific(threadLocalToKey(threadLocal), value);
74	DE_ASSERT(ret == 0);
75	DE_UNREF(ret);
76}
77
78#endif /* DE_OS */
79