Diffstat (limited to 'noncore/multimedia/opieplayer2/threadutil.cpp') (more/less context) (ignore whitespace changes)
-rw-r--r-- | noncore/multimedia/opieplayer2/threadutil.cpp | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/noncore/multimedia/opieplayer2/threadutil.cpp b/noncore/multimedia/opieplayer2/threadutil.cpp index 4055c74..5687f42 100644 --- a/noncore/multimedia/opieplayer2/threadutil.cpp +++ b/noncore/multimedia/opieplayer2/threadutil.cpp | |||
@@ -1,74 +1,75 @@ | |||
1 | /* This file is part of the KDE project | 1 | /* This file is part of the KDE project |
2 | Copyright (C) 2002 Simon Hausmann <hausmann@kde.org> | 2 | Copyright (C) 2002 Simon Hausmann <hausmann@kde.org> |
3 | 3 | ||
4 | This library is free software; you can redistribute it and/or | 4 | This library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Library General Public | 5 | modify it under the terms of the GNU Library General Public |
6 | License as published by the Free Software Foundation; either | 6 | License as published by the Free Software Foundation; either |
7 | version 2 of the License, or (at your option) any later version. | 7 | version 2 of the License, or (at your option) any later version. |
8 | 8 | ||
9 | This library is distributed in the hope that it will be useful, | 9 | This library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Library General Public License for more details. | 12 | Library General Public License for more details. |
13 | 13 | ||
14 | You should have received a copy of the GNU Library General Public License | 14 | You should have received a copy of the GNU Library General Public License |
15 | along with this library; see the file COPYING.LIB. If not, write to | 15 | along with this library; see the file COPYING.LIB. If not, write to |
16 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | 16 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
17 | Boston, MA 02111-1307, USA. | 17 | Boston, MA 02111-1307, USA. |
18 | */ | 18 | */ |
19 | 19 | ||
20 | #include "threadutil.h" | 20 | #include "threadutil.h" |
21 | 21 | ||
22 | #include <qsocketnotifier.h> | 22 | #include <qsocketnotifier.h> |
23 | 23 | ||
24 | #include <pthread.h> | 24 | #include <pthread.h> |
25 | #include <assert.h> | 25 | #include <assert.h> |
26 | #include <unistd.h> | 26 | #include <unistd.h> |
27 | #include <errno.h> | ||
27 | 28 | ||
28 | using namespace ThreadUtil; | 29 | using namespace ThreadUtil; |
29 | 30 | ||
30 | struct Mutex::Data | 31 | struct Mutex::Data |
31 | { | 32 | { |
32 | Data() | 33 | Data() |
33 | { | 34 | { |
34 | pthread_mutex_init( &mutex, 0 ); | 35 | pthread_mutex_init( &mutex, 0 ); |
35 | } | 36 | } |
36 | ~Data() | 37 | ~Data() |
37 | { | 38 | { |
38 | pthread_mutex_destroy( &mutex ); | 39 | pthread_mutex_destroy( &mutex ); |
39 | } | 40 | } |
40 | 41 | ||
41 | pthread_mutex_t mutex; | 42 | pthread_mutex_t mutex; |
42 | }; | 43 | }; |
43 | 44 | ||
44 | Mutex::Mutex() | 45 | Mutex::Mutex() |
45 | : d( new Data ) | 46 | : d( new Data ) |
46 | { | 47 | { |
47 | } | 48 | } |
48 | 49 | ||
49 | Mutex::~Mutex() | 50 | Mutex::~Mutex() |
50 | { | 51 | { |
51 | delete d; | 52 | delete d; |
52 | } | 53 | } |
53 | 54 | ||
54 | void Mutex::lock() | 55 | void Mutex::lock() |
55 | { | 56 | { |
56 | pthread_mutex_lock( &d->mutex ); | 57 | pthread_mutex_lock( &d->mutex ); |
57 | } | 58 | } |
58 | 59 | ||
59 | void Mutex::unlock() | 60 | void Mutex::unlock() |
60 | { | 61 | { |
61 | pthread_mutex_unlock( &d->mutex ); | 62 | pthread_mutex_unlock( &d->mutex ); |
62 | } | 63 | } |
63 | 64 | ||
64 | bool Mutex::tryLock() | 65 | bool Mutex::tryLock() |
65 | { | 66 | { |
66 | return pthread_mutex_trylock( &d->mutex ) == 0; | 67 | return pthread_mutex_trylock( &d->mutex ) == 0; |
67 | } | 68 | } |
68 | 69 | ||
69 | bool Mutex::isLocked() | 70 | bool Mutex::isLocked() |
70 | { | 71 | { |
71 | if ( !tryLock() ) | 72 | if ( !tryLock() ) |
72 | return true; | 73 | return true; |
73 | 74 | ||
74 | unlock(); | 75 | unlock(); |
@@ -77,96 +78,194 @@ bool Mutex::isLocked() | |||
77 | 78 | ||
78 | struct WaitCondition::Data | 79 | struct WaitCondition::Data |
79 | { | 80 | { |
80 | Data() | 81 | Data() |
81 | { | 82 | { |
82 | int result = pthread_cond_init( &waitCondition, 0 ); | 83 | int result = pthread_cond_init( &waitCondition, 0 ); |
83 | assert( result == 0 ); | 84 | assert( result == 0 ); |
84 | } | 85 | } |
85 | ~Data() | 86 | ~Data() |
86 | { | 87 | { |
87 | pthread_cond_destroy( &waitCondition ); | 88 | pthread_cond_destroy( &waitCondition ); |
88 | } | 89 | } |
89 | 90 | ||
90 | pthread_cond_t waitCondition; | 91 | pthread_cond_t waitCondition; |
91 | }; | 92 | }; |
92 | 93 | ||
93 | WaitCondition::WaitCondition() | 94 | WaitCondition::WaitCondition() |
94 | : d( new Data ) | 95 | : d( new Data ) |
95 | { | 96 | { |
96 | } | 97 | } |
97 | 98 | ||
98 | WaitCondition::~WaitCondition() | 99 | WaitCondition::~WaitCondition() |
99 | { | 100 | { |
100 | delete d; | 101 | delete d; |
101 | } | 102 | } |
102 | 103 | ||
103 | bool WaitCondition::wait() | 104 | bool WaitCondition::wait() |
104 | { | 105 | { |
105 | Mutex m; | 106 | Mutex m; |
106 | m.lock(); | 107 | m.lock(); |
107 | return wait( m ); | 108 | return wait( m ); |
108 | } | 109 | } |
109 | 110 | ||
110 | bool WaitCondition::wait( Mutex &mutex ) | 111 | bool WaitCondition::wait( Mutex &mutex ) |
111 | { | 112 | { |
112 | return pthread_cond_wait( &d->waitCondition, &mutex.d->mutex ); | 113 | return pthread_cond_wait( &d->waitCondition, &mutex.d->mutex ); |
113 | } | 114 | } |
114 | 115 | ||
115 | void WaitCondition::wakeOne() | 116 | void WaitCondition::wakeOne() |
116 | { | 117 | { |
117 | pthread_cond_signal( &d->waitCondition ); | 118 | pthread_cond_signal( &d->waitCondition ); |
118 | } | 119 | } |
119 | 120 | ||
120 | void WaitCondition::wakeAll() | 121 | void WaitCondition::wakeAll() |
121 | { | 122 | { |
122 | pthread_cond_broadcast( &d->waitCondition ); | 123 | pthread_cond_broadcast( &d->waitCondition ); |
123 | } | 124 | } |
124 | 125 | ||
126 | struct Thread::Data | ||
127 | { | ||
128 | Data() : isRunning( false ) | ||
129 | {} | ||
130 | |||
131 | pthread_t self; | ||
132 | Mutex guard; | ||
133 | bool isRunning; | ||
134 | |||
135 | WaitCondition finishCondition; | ||
136 | }; | ||
137 | |||
138 | extern "C" | ||
139 | { | ||
140 | |||
141 | void _threadutil_terminate_thread( void *arg ) | ||
142 | { | ||
143 | Thread *thr = ( Thread* )arg; | ||
144 | |||
145 | assert( thr ); | ||
146 | |||
147 | AutoLock locker( thr->d->guard ); | ||
148 | thr->d->isRunning = false; | ||
149 | thr->d->finishCondition.wakeAll(); | ||
150 | } | ||
151 | |||
152 | void *_threadutil_start_thread( void *arg ) | ||
153 | { | ||
154 | Thread *thr = ( Thread* )arg; | ||
155 | |||
156 | pthread_cleanup_push( _threadutil_terminate_thread, thr ); | ||
157 | |||
158 | thr->d->isRunning = true; | ||
159 | thr->run(); | ||
160 | |||
161 | pthread_cleanup_pop( true ); | ||
162 | |||
163 | Thread::exit(); | ||
164 | return 0; // never reached | ||
165 | } | ||
166 | |||
167 | } | ||
168 | |||
169 | Thread::Thread() | ||
170 | : d( new Data ) | ||
171 | { | ||
172 | } | ||
173 | |||
174 | Thread::~Thread() | ||
175 | { | ||
176 | assert( d->isRunning == false ); | ||
177 | delete d; | ||
178 | } | ||
179 | |||
180 | void Thread::start() | ||
181 | { | ||
182 | AutoLock lock( d->guard ); | ||
183 | |||
184 | if ( d->isRunning ) { | ||
185 | qDebug( "ThreadUtil::Thread::start() called for running thread." ); | ||
186 | return; | ||
187 | } | ||
188 | |||
189 | pthread_attr_t attributes; | ||
190 | pthread_attr_init( &attributes ); | ||
191 | pthread_attr_setscope( &attributes, PTHREAD_SCOPE_SYSTEM ); | ||
192 | int err = pthread_create( &d->self, &attributes, _threadutil_start_thread, ( void* )this ); | ||
193 | if ( err != 0 ) { | ||
194 | qDebug( "ThreadUtil::Thread::start() : can't create thread: %s", strerror( err ) ); | ||
195 | pthread_attr_destroy( &attributes ); | ||
196 | return; | ||
197 | } | ||
198 | pthread_attr_destroy( &attributes ); | ||
199 | } | ||
200 | |||
201 | void Thread::terminate() | ||
202 | { | ||
203 | AutoLock lock( d->guard ); | ||
204 | if ( !d->isRunning ) | ||
205 | return; | ||
206 | |||
207 | pthread_cancel( d->self ); | ||
208 | } | ||
209 | |||
210 | bool Thread::wait() | ||
211 | { | ||
212 | AutoLock lock( d->guard ); | ||
213 | if ( !d->isRunning ) | ||
214 | return true; | ||
215 | |||
216 | return d->finishCondition.wait( d->guard ); | ||
217 | } | ||
218 | |||
219 | void Thread::exit() | ||
220 | { | ||
221 | pthread_exit( 0 ); | ||
222 | } | ||
223 | |||
125 | OnewayNotifier::OnewayNotifier() | 224 | OnewayNotifier::OnewayNotifier() |
126 | { | 225 | { |
127 | int fds[ 2 ]; | 226 | int fds[ 2 ]; |
128 | pipe( fds ); | 227 | pipe( fds ); |
129 | m_readFd = fds[ 0 ]; | 228 | m_readFd = fds[ 0 ]; |
130 | m_writeFd = fds[ 1 ]; | 229 | m_writeFd = fds[ 1 ]; |
131 | 230 | ||
132 | m_notifier = new QSocketNotifier( m_readFd, QSocketNotifier::Read ); | 231 | m_notifier = new QSocketNotifier( m_readFd, QSocketNotifier::Read ); |
133 | connect( m_notifier, SIGNAL( activated( int ) ), | 232 | connect( m_notifier, SIGNAL( activated( int ) ), |
134 | this, SLOT( wakeUp() ) ); | 233 | this, SLOT( wakeUp() ) ); |
135 | } | 234 | } |
136 | 235 | ||
137 | OnewayNotifier::~OnewayNotifier() | 236 | OnewayNotifier::~OnewayNotifier() |
138 | { | 237 | { |
139 | delete m_notifier; | 238 | delete m_notifier; |
140 | 239 | ||
141 | ::close( m_readFd ); | 240 | ::close( m_readFd ); |
142 | ::close( m_writeFd ); | 241 | ::close( m_writeFd ); |
143 | } | 242 | } |
144 | 243 | ||
145 | void OnewayNotifier::notify() | 244 | void OnewayNotifier::notify() |
146 | { | 245 | { |
147 | const char c = 42; | 246 | const char c = 42; |
148 | ::write( m_writeFd, &c, 1 ); | 247 | ::write( m_writeFd, &c, 1 ); |
149 | } | 248 | } |
150 | 249 | ||
151 | void OnewayNotifier::wakeUp() | 250 | void OnewayNotifier::wakeUp() |
152 | { | 251 | { |
153 | char c = 0; | 252 | char c = 0; |
154 | 253 | ||
155 | if ( ::read( m_readFd, &c, 1 ) != 1 ) | 254 | if ( ::read( m_readFd, &c, 1 ) != 1 ) |
156 | return; | 255 | return; |
157 | 256 | ||
158 | emit awake(); | 257 | emit awake(); |
159 | } | 258 | } |
160 | 259 | ||
161 | ChannelMessage::ChannelMessage( int type ) | 260 | ChannelMessage::ChannelMessage( int type ) |
162 | : m_type( type ), m_isCall( false ), m_replied( false ), | 261 | : m_type( type ), m_isCall( false ), m_replied( false ), |
163 | m_inEventHandler( false ) | 262 | m_inEventHandler( false ) |
164 | { | 263 | { |
165 | } | 264 | } |
166 | 265 | ||
167 | ChannelMessage::~ChannelMessage() | 266 | ChannelMessage::~ChannelMessage() |
168 | { | 267 | { |
169 | if ( m_guard.isLocked() ) | 268 | if ( m_guard.isLocked() ) |
170 | m_guard.unlock(); | 269 | m_guard.unlock(); |
171 | } | 270 | } |
172 | 271 | ||