1 /*
2  * Copyright (C) 2011 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef ART_RUNTIME_THREAD_CURRENT_INL_H_
18 #define ART_RUNTIME_THREAD_CURRENT_INL_H_
19 
20 #include "thread.h"
21 
22 #ifdef __BIONIC__
23 #include <bionic/tls.h>  // Access to our own TLS slot.
24 #endif
25 
26 #include <pthread.h>
27 
28 namespace art {
29 
Current()30 inline Thread* Thread::Current() {
31   // We rely on Thread::Current returning null for a detached thread, so it's not obvious
32   // that we can replace this with a direct %fs access on x86.
33   if (!is_started_) {
34     return nullptr;
35   } else {
36 #ifdef __BIONIC__
37     void* thread = __get_tls()[TLS_SLOT_ART_THREAD_SELF];
38 #else
39     Thread* thread = Thread::self_tls_;
40 #endif
41     return reinterpret_cast<Thread*>(thread);
42   }
43 }
44 
45 }  // namespace art
46 
47 #endif  // ART_RUNTIME_THREAD_CURRENT_INL_H_
48