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
|
/*
** 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.
*/
#include "cutils/threads.h"
// For gettid.
#if defined(__APPLE__)
#include "AvailabilityMacros.h" // For MAC_OS_X_VERSION_MAX_ALLOWED
#include <stdint.h>
#include <stdlib.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <unistd.h>
#elif defined(__linux__) && !defined(__ANDROID__)
#include <syscall.h>
#include <unistd.h>
#elif defined(_WIN32)
#include <windows.h>
#endif
// No definition needed for Android because we'll just pick up bionic's copy.
#ifndef __ANDROID__
pid_t gettid() {
#if defined(__APPLE__)
return syscall(SYS_thread_selfid);
#elif defined(__linux__)
return syscall(__NR_gettid);
#elif defined(_WIN32)
return GetCurrentThreadId();
#endif
}
#endif // __ANDROID__
#if !defined(_WIN32)
void* thread_store_get( thread_store_t* store )
{
if (!store->has_tls)
return NULL;
return pthread_getspecific( store->tls );
}
extern void thread_store_set( thread_store_t* store,
void* value,
thread_store_destruct_t destroy)
{
pthread_mutex_lock( &store->lock );
if (!store->has_tls) {
if (pthread_key_create( &store->tls, destroy) != 0) {
pthread_mutex_unlock(&store->lock);
return;
}
store->has_tls = 1;
}
pthread_mutex_unlock( &store->lock );
pthread_setspecific( store->tls, value );
}
#else /* !defined(_WIN32) */
void* thread_store_get( thread_store_t* store )
{
if (!store->has_tls)
return NULL;
return (void*) TlsGetValue( store->tls );
}
void thread_store_set( thread_store_t* store,
void* value,
thread_store_destruct_t destroy )
{
/* XXX: can't use destructor on thread exit */
if (!store->lock_init) {
store->lock_init = -1;
InitializeCriticalSection( &store->lock );
store->lock_init = -2;
} else while (store->lock_init != -2) {
Sleep(10); /* 10ms */
}
EnterCriticalSection( &store->lock );
if (!store->has_tls) {
store->tls = TlsAlloc();
if (store->tls == TLS_OUT_OF_INDEXES) {
LeaveCriticalSection( &store->lock );
return;
}
store->has_tls = 1;
}
LeaveCriticalSection( &store->lock );
TlsSetValue( store->tls, value );
}
#endif /* !defined(_WIN32) */
|
