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 #include "osThread.h"
17
18 #include "emugl/common/thread_store.h"
19
20 namespace osUtils {
21
Thread()22 Thread::Thread() :
23 m_thread(NULL),
24 m_threadId(0),
25 m_isRunning(false)
26 {
27 }
28
~Thread()29 Thread::~Thread()
30 {
31 if(m_thread) {
32 CloseHandle(m_thread);
33 }
34 }
35
36 bool
start()37 Thread::start()
38 {
39 m_isRunning = true;
40 m_thread = CreateThread(NULL, 0, &Thread::thread_main, this, 0, &m_threadId);
41 if(!m_thread) {
42 m_isRunning = false;
43 }
44 return m_isRunning;
45 }
46
47 bool
wait(int * exitStatus)48 Thread::wait(int *exitStatus)
49 {
50 if (!m_isRunning) {
51 return false;
52 }
53
54 if(WaitForSingleObject(m_thread, INFINITE) == WAIT_FAILED) {
55 return false;
56 }
57
58 DWORD retval;
59 if (!GetExitCodeThread(m_thread,&retval)) {
60 return false;
61 }
62
63 m_isRunning = 0;
64
65 if (exitStatus) {
66 *exitStatus = retval;
67 }
68 return true;
69 }
70
71 bool
trywait(int * exitStatus)72 Thread::trywait(int *exitStatus)
73 {
74 if (!m_isRunning) {
75 return false;
76 }
77
78 if(WaitForSingleObject(m_thread, 0) == WAIT_OBJECT_0) {
79
80 DWORD retval;
81 if (!GetExitCodeThread(m_thread,&retval)) {
82 return true;
83 }
84
85 if (exitStatus) {
86 *exitStatus = retval;
87 }
88 return true;
89 }
90
91 return false;
92 }
93
94 DWORD WINAPI
thread_main(void * p_arg)95 Thread::thread_main(void *p_arg)
96 {
97 Thread *self = (Thread *)p_arg;
98 int ret = self->Main();
99 self->m_isRunning = false;
100 ::emugl::ThreadStore::OnThreadExit();
101 return ret;
102 }
103
104 } // of namespace osUtils
105