1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _LIBS_CUTILS_THREADS_H
#define _LIBS_CUTILS_THREADS_H
#ifdef __cplusplus
extern "C" {
#endif
/***********************************************************************/
/***********************************************************************/
/***** *****/
/***** local thread storage *****/
/***** *****/
/***********************************************************************/
/***********************************************************************/
#if !defined(_WIN32)
#include <pthread.h>
typedef struct {
pthread_mutex_t lock;
int has_tls;
pthread_key_t tls;
} thread_store_t;
#define THREAD_STORE_INITIALIZER { PTHREAD_MUTEX_INITIALIZER, 0, 0 }
#else // !defined(_WIN32)
#include <windows.h>
typedef struct {
int lock_init;
int has_tls;
DWORD tls;
CRITICAL_SECTION lock;
} thread_store_t;
#define THREAD_STORE_INITIALIZER { 0, 0, 0, {0, 0, 0, 0, 0, 0} }
#endif // !defined(_WIN32)
typedef void (*thread_store_destruct_t)(void* value);
extern void* thread_store_get(thread_store_t* store);
extern void thread_store_set(thread_store_t* store,
void* value,
thread_store_destruct_t destroy);
/***********************************************************************/
/***********************************************************************/
/***** *****/
/***** mutexes *****/
/***** *****/
/***********************************************************************/
/***********************************************************************/
#if !defined(_WIN32)
typedef pthread_mutex_t mutex_t;
#define MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
static __inline__ void mutex_lock(mutex_t* lock)
{
pthread_mutex_lock(lock);
}
static __inline__ void mutex_unlock(mutex_t* lock)
{
pthread_mutex_unlock(lock);
}
static __inline__ int mutex_init(mutex_t* lock)
{
return pthread_mutex_init(lock, NULL);
}
static __inline__ void mutex_destroy(mutex_t* lock)
{
pthread_mutex_destroy(lock);
}
#else // !defined(_WIN32)
typedef struct {
int init;
CRITICAL_SECTION lock[1];
} mutex_t;
#define MUTEX_INITIALIZER { 0, {{ NULL, 0, 0, NULL, NULL, 0 }} }
static __inline__ void mutex_lock(mutex_t* lock)
{
if (!lock->init) {
lock->init = 1;
InitializeCriticalSection( lock->lock );
lock->init = 2;
} else while (lock->init != 2)
Sleep(10);
EnterCriticalSection(lock->lock);
}
static __inline__ void mutex_unlock(mutex_t* lock)
{
LeaveCriticalSection(lock->lock);
}
static __inline__ int mutex_init(mutex_t* lock)
{
InitializeCriticalSection(lock->lock);
lock->init = 2;
return 0;
}
static __inline__ void mutex_destroy(mutex_t* lock)
{
if (lock->init) {
lock->init = 0;
DeleteCriticalSection(lock->lock);
}
}
#endif // !defined(_WIN32)
#ifdef __cplusplus
}
#endif
#endif /* _LIBS_CUTILS_THREADS_H */
|
