Hi Robert,
Curtis implemented the same code with pthreads (attached) which seam to
work, so it is definitely a bug in OpenThreads (for linux only, Windows
implementation seam to be working). Just FYI
Nick
On Mon, May 5, 2014 at 3:23 PM, Curtis Rubel <cru...@compro.net> wrote:
> Hi,
>
> Checked out the latest trunk version myself and I am still having the same
> issues here with the OpenThread calls and the example code I sent to Nick.
> We are running OpenSuse 12.3 64-bit here.
>
> The calls all return good status. In fact the getSchedulePolicy and the
> getSchedulePriority return the same level that was set, but the linux
> system calls do not show any change in the threads priority, scheduling
> policy or affinity.
>
> Tried running the example as normal user and the root user and get the
> same exact results so does not seem to be any sort of issue with
> priviledges at this point either.
>
>
> Thank you!
>
> Cheers,
> Curtis
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=59262#59262
>
>
>
>
>
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> osg-users@lists.openscenegraph.org
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>
--
trajce nikolov nick
/* -*-c++-*- Copyright (C) 2010 Wang Rui <wangray84 at gmail dot com>
* OpenSceneGraph Beginners Guide
* Using a separate thread for supplying data to a node in the main process
*/
#include <osg/Geode>
#include <osgDB/ReadFile>
#include <osgText/Text>
#include <osgViewer/Viewer>
#include <iostream>
//#define OPENTHREADS_ENABLED
#ifdef OPENTHREADS_ENABLED
class DataReceiverThread : public OpenThreads::Thread
{
public:
virtual int cancel()
{
_done = true;
while( isRunning() ) YieldCurrentThread();
return 0;
}
virtual void run()
{
_done = false;
_dirty = true;
do
{
YieldCurrentThread();
char ch;
std::cin.get(ch);
printf("[%c][%d] ", ch, ch);
switch (ch)
{
case 0: break; // We don¡¯t want ¡®\0¡¯ to be added
case 9: _done = true; break; // Tab = 9
default: addToContent(ch); break;
}
} while( !_done );
}
void addToContent( int ch )
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
_content += ch;
_dirty = true;
}
bool getContent( std::string& str )
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
if ( _dirty )
{
str += _content;
_dirty = false;
return true;
}
return false;
}
protected:
OpenThreads::Mutex _mutex;
std::string _content;
bool _done;
bool _dirty;
};
#else
#include <pthread.h>
class DataReceiverThread
{
public:
DataReceiverThread()
{
_mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_attr_init(&custom_sched_attr);
CPU_ZERO(&cpuset);
CPU_SET(7,&cpuset);
pthread_attr_setscope(&custom_sched_attr, PTHREAD_SCOPE_SYSTEM);
pthread_attr_setinheritsched(&custom_sched_attr, PTHREAD_EXPLICIT_SCHED);
pthread_attr_setschedpolicy(&custom_sched_attr, SCHED_FIFO);
fifo_max_prio = sched_get_priority_max(SCHED_FIFO);
fifo_min_prio = sched_get_priority_min(SCHED_FIFO);
fifo_mid_prio = (fifo_min_prio + fifo_max_prio)/2;
fifo_param.sched_priority = fifo_mid_prio;
pthread_attr_setschedparam(&custom_sched_attr, &fifo_param);
}
~DataReceiverThread();
virtual int cancel()
{
_done = true;
sched_yield();
return 0;
}
virtual void run()
{
_done = false;
_dirty = true;
do
{
sched_yield();
char ch;
std::cin.get(ch);
printf("[%c][%d] ", ch, ch);
switch (ch)
{
case 0: break; // We don¡¯t want ¡®\0¡¯ to be added
case 9: _done = true; break; // Tab = 9
default: addToContent(ch); break;
}
} while( !_done );
}
bool StartInternalThread()
{
bool status;
if(pthread_create(&_thread, &custom_sched_attr, DataRcvrThreadFunc, this) == 0)
status = true;
else
status = false;
if(status)
status = pthread_setaffinity_np(_thread, sizeof(cpu_set_t), &cpuset);
return status;
}
void addToContent( int ch )
{
pthread_mutex_lock(&_mutex);
_content += ch;
_dirty = true;
pthread_mutex_unlock(&_mutex);
}
bool getContent( std::string& str )
{
if ( _dirty )
{
pthread_mutex_lock(&_mutex);
str += _content;
_dirty = false;
pthread_mutex_unlock(&_mutex);
return true;
}
return false;
}
protected:
pthread_t _thread;
pthread_mutex_t _mutex;
pthread_attr_t custom_sched_attr;
struct sched_param fifo_param;
int fifo_max_prio;
int fifo_mid_prio;
int fifo_min_prio;
cpu_set_t cpuset;
std::string _content;
bool _done;
bool _dirty;
private:
static void * DataRcvrThreadFunc(void * This) {((DataReceiverThread *)This)->run(); return NULL;}
};
#endif
class UpdateTextCallback : public osg::Drawable::UpdateCallback
{
public:
UpdateTextCallback(DataReceiverThread* rcvrthrd) : rcvrthread(rcvrthrd)
{}
virtual void update( osg::NodeVisitor* nv, osg::Drawable* drawable )
{
osgText::Text* text = static_cast<osgText::Text*>( drawable );
if ( text )
{
std::string str("# ");
// if ( DataReceiverThread::instance()->getContent(str) )
if ( rcvrthread->getContent(str) )
text->setText( str );
}
}
DataReceiverThread* rcvrthread;
};
int main( int argc, char** argv )
{
int status;
osg::ref_ptr<osgText::Text> text = new osgText::Text;
text->setFont( "fonts/arial.ttf" );
text->setAxisAlignment( osgText::TextBase::SCREEN );
text->setDataVariance( osg::Object::DYNAMIC );
text->setInitialBound( osg::BoundingBox(osg::Vec3(), osg::Vec3(400.0f, 20.0f, 20.0f)) );
DataReceiverThread* rcvrthread = new DataReceiverThread;
text->setUpdateCallback( new UpdateTextCallback(rcvrthread));
osg::ref_ptr<osg::Geode> geode = new osg::Geode;
geode->addDrawable( text.get() );
geode->getOrCreateStateSet()->setMode( GL_LIGHTING, osg::StateAttribute::OFF );
osgViewer::Viewer viewer;
viewer.setSceneData( geode.get() );
viewer.setUpViewInWindow( 50, 50, 640, 480 );
#ifdef OPENTHREADS_ENABLED
status = rcvrthread->setProcessorAffinity(2);
printf("setProcessorAffinity status: %d\n", status);
status = rcvrthread->setSchedulePolicy(OpenThreads::Thread::THREAD_SCHEDULE_ROUND_ROBIN);
printf("setSchedulePolicy status: %d\n", status);
if(!status)
printf("getSchedulePolicy: %d\n",rcvrthread->getSchedulePolicy());
status = rcvrthread->setSchedulePriority(OpenThreads::Thread::THREAD_PRIORITY_HIGH);
printf("setSchedulePriority status: %d\n", status);
if(!status)
printf("getSchedulePriority: %d\n",rcvrthread->getSchedulePriority());
rcvrthread->Init();
rcvrthread->startThread();
#else
status = rcvrthread->StartInternalThread();
#endif
viewer.run();
rcvrthread->cancel();
return 0;
}
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