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authorsimon <simon>2002-12-10 11:07:46 (UTC)
committer simon <simon>2002-12-10 11:07:46 (UTC)
commitf468c3bc69655aefa0ec5783405355dd3dde4afc (patch) (unidiff)
treeb358fb36cb4547a0bf2c100573e4846fbc32211c
parent448426777d9e35826898791d03b4bc71335427ff (diff)
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- added ThreadUtil::Thread class
Diffstat (more/less context) (ignore whitespace changes)
-rw-r--r--noncore/multimedia/opieplayer2/threadutil.cpp99
-rw-r--r--noncore/multimedia/opieplayer2/threadutil.h28
2 files changed, 127 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
@@ -15,24 +15,25 @@
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
28using namespace ThreadUtil; 29using namespace ThreadUtil;
29 30
30struct Mutex::Data 31struct 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 );
@@ -113,24 +114,122 @@ bool WaitCondition::wait( Mutex &mutex )
113} 114}
114 115
115void WaitCondition::wakeOne() 116void WaitCondition::wakeOne()
116{ 117{
117 pthread_cond_signal( &d->waitCondition ); 118 pthread_cond_signal( &d->waitCondition );
118} 119}
119 120
120void WaitCondition::wakeAll() 121void WaitCondition::wakeAll()
121{ 122{
122 pthread_cond_broadcast( &d->waitCondition ); 123 pthread_cond_broadcast( &d->waitCondition );
123} 124}
124 125
126struct 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
138extern "C"
139{
140
141void _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
152void *_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
169Thread::Thread()
170 : d( new Data )
171{
172}
173
174Thread::~Thread()
175{
176 assert( d->isRunning == false );
177 delete d;
178}
179
180void 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
201void Thread::terminate()
202{
203 AutoLock lock( d->guard );
204 if ( !d->isRunning )
205 return;
206
207 pthread_cancel( d->self );
208}
209
210bool 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
219void Thread::exit()
220{
221 pthread_exit( 0 );
222}
223
125OnewayNotifier::OnewayNotifier() 224OnewayNotifier::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
diff --git a/noncore/multimedia/opieplayer2/threadutil.h b/noncore/multimedia/opieplayer2/threadutil.h
index 5cc4cdc..b537cc1 100644
--- a/noncore/multimedia/opieplayer2/threadutil.h
+++ b/noncore/multimedia/opieplayer2/threadutil.h
@@ -17,24 +17,30 @@
17 Boston, MA 02111-1307, USA. 17 Boston, MA 02111-1307, USA.
18*/ 18*/
19 19
20#ifndef THREADUTIL_H 20#ifndef THREADUTIL_H
21#define THREADUTIL_H 21#define THREADUTIL_H
22 22
23#include <qvaluelist.h> 23#include <qvaluelist.h>
24#include <qobject.h> 24#include <qobject.h>
25#include <qguardedptr.h> 25#include <qguardedptr.h>
26 26
27class QSocketNotifier; 27class QSocketNotifier;
28 28
29extern "C"
30{
31 void *_threadutil_start_thread( void* );
32 void _threadutil_terminate_thread( void* );
33}
34
29namespace ThreadUtil 35namespace ThreadUtil
30{ 36{
31 37
32 class Mutex 38 class Mutex
33 { 39 {
34 friend class WaitCondition; 40 friend class WaitCondition;
35 public: 41 public:
36 Mutex(); 42 Mutex();
37 ~Mutex(); 43 ~Mutex();
38 44
39 void lock(); 45 void lock();
40 void unlock(); 46 void unlock();
@@ -72,24 +78,46 @@ namespace ThreadUtil
72 78
73 void wakeOne(); 79 void wakeOne();
74 void wakeAll(); 80 void wakeAll();
75 81
76 private: 82 private:
77 struct Data; 83 struct Data;
78 Data *d; 84 Data *d;
79 85
80 WaitCondition( const WaitCondition & ); 86 WaitCondition( const WaitCondition & );
81 WaitCondition &operator=( const WaitCondition & ); 87 WaitCondition &operator=( const WaitCondition & );
82 }; 88 };
83 89
90 class Thread
91 {
92 friend void *::_threadutil_start_thread( void* );
93 friend void ::_threadutil_terminate_thread( void* );
94 public:
95 Thread();
96 virtual ~Thread();
97
98 void start();
99 void terminate();
100
101 bool wait();
102
103 static void exit();
104 protected:
105 virtual void run() = 0;
106
107 private:
108 struct Data;
109 Data *d;
110 };
111
84 class OnewayNotifier : public QObject 112 class OnewayNotifier : public QObject
85 { 113 {
86 Q_OBJECT 114 Q_OBJECT
87 public: 115 public:
88 OnewayNotifier(); 116 OnewayNotifier();
89 ~OnewayNotifier(); 117 ~OnewayNotifier();
90 118
91 void notify(); 119 void notify();
92 120
93 signals: 121 signals:
94 void awake(); 122 void awake();
95 123