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1 | #pragma once |
2 | /* | |
3 | * This file is part of the libCEC(R) library. | |
4 | * | |
b492c10e | 5 | * libCEC(R) is Copyright (C) 2011-2012 Pulse-Eight Limited. All rights reserved. |
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6 | * libCEC(R) is an original work, containing original code. |
7 | * | |
8 | * libCEC(R) is a trademark of Pulse-Eight Limited. | |
9 | * | |
10 | * This program is dual-licensed; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
23 | * | |
24 | * | |
25 | * Alternatively, you can license this library under a commercial license, | |
26 | * please contact Pulse-Eight Licensing for more information. | |
27 | * | |
28 | * For more information contact: | |
29 | * Pulse-Eight Licensing <license@pulse-eight.com> | |
30 | * http://www.pulse-eight.com/ | |
31 | * http://www.pulse-eight.net/ | |
32 | */ | |
33 | ||
34 | #include "mutex.h" | |
35 | ||
36 | namespace PLATFORM | |
37 | { | |
38 | class CThread | |
39 | { | |
40 | public: | |
41 | CThread(void) : | |
42 | m_bStop(false), | |
43 | m_bRunning(false) {} | |
44 | ||
45 | virtual ~CThread(void) | |
46 | { | |
47 | StopThread(); | |
48 | } | |
49 | ||
50 | static void *ThreadHandler(CThread *thread) | |
51 | { | |
52 | void *retVal = NULL; | |
53 | ||
54 | if (thread) | |
55 | { | |
56 | CLockObject lock(thread->m_threadMutex); | |
57 | thread->m_bRunning = true; | |
58 | lock.Unlock(); | |
59 | thread->m_threadCondition.Broadcast(); | |
60 | ||
61 | retVal = thread->Process(); | |
62 | ||
63 | lock.Lock(); | |
64 | thread->m_bRunning = false; | |
65 | lock.Unlock(); | |
66 | thread->m_threadCondition.Broadcast(); | |
67 | } | |
68 | ||
69 | return retVal; | |
70 | } | |
71 | ||
c12ee8e6 | 72 | virtual bool IsRunning(void) |
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73 | { |
74 | CLockObject lock(m_threadMutex); | |
75 | return m_bRunning; | |
76 | } | |
77 | ||
c12ee8e6 | 78 | virtual bool IsStopped(void) |
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79 | { |
80 | CLockObject lock(m_threadMutex); | |
81 | return m_bStop; | |
82 | } | |
83 | ||
c12ee8e6 | 84 | virtual bool CreateThread(bool bWait = true) |
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85 | { |
86 | bool bReturn(false); | |
87 | CLockObject lock(m_threadMutex); | |
88 | if (!IsRunning()) | |
89 | { | |
4fe8d858 | 90 | m_bStop = false; |
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91 | if (ThreadsCreate(m_thread, CThread::ThreadHandler, ((void*)static_cast<CThread *>(this)))) |
92 | { | |
93 | if (bWait) | |
94 | m_threadCondition.Wait(m_threadMutex); | |
95 | bReturn = true; | |
96 | } | |
97 | } | |
98 | return bReturn; | |
99 | } | |
100 | ||
c12ee8e6 | 101 | virtual bool StopThread(bool bWaitForExit = true) |
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102 | { |
103 | bool bReturn(true); | |
104 | bool bRunning(false); | |
105 | { | |
106 | CLockObject lock(m_threadMutex); | |
107 | bRunning = IsRunning(); | |
108 | m_bStop = true; | |
109 | m_threadCondition.Broadcast(); | |
110 | } | |
111 | ||
112 | if (bRunning && bWaitForExit) | |
113 | { | |
114 | void *retVal = NULL; | |
115 | bReturn = ThreadsWait(m_thread, &retVal); | |
116 | } | |
117 | return true; | |
118 | } | |
119 | ||
c12ee8e6 | 120 | virtual bool Sleep(uint32_t iTimeout) |
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121 | { |
122 | CLockObject lock(m_threadMutex); | |
123 | return m_bStop ? false : m_threadCondition.Wait(m_threadMutex, iTimeout); | |
124 | } | |
125 | ||
126 | virtual void *Process(void) = 0; | |
127 | ||
128 | protected: | |
129 | void SetRunning(bool bSetTo); | |
130 | ||
131 | private: | |
132 | bool m_bStop; | |
133 | bool m_bRunning; | |
134 | CCondition m_threadCondition; | |
135 | CMutex m_threadMutex; | |
136 | thread_t m_thread; | |
137 | }; | |
138 | }; |