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#include <bu/thread.h>
#include <bu/synchroqueue.h>
#include <bu/list.h>
class Thing
{
public:
Thing( int x ) :
x( x ),
y( 0 )
{
}
int x;
int y;
};
typedef Bu::SynchroQueue<Thing *> ThingQueue;
Bu::Mutex mWorkDone;
int iWorkDone;
Bu::Condition cWorkDone;
void workDone()
{
mWorkDone.lock();
iWorkDone--;
if( iWorkDone == 0 )
{
mWorkDone.unlock();
cWorkDone.lock();
cWorkDone.signal();
cWorkDone.unlock();
return;
}
mWorkDone.unlock();
}
class ThingEater : public Bu::Thread
{
public:
ThingEater( ThingQueue &qThing ) :
qThing( qThing )
{
}
bool bRunning;
void setRunning( bool b )
{
mRunning.lock();
bRunning = b;
mRunning.unlock();
}
bool isRunning()
{
mRunning.lock();
bool b = bRunning;
mRunning.unlock();
return b;
}
protected:
virtual void run()
{
setRunning( true );
while( isRunning() )
{
Thing *pThing = qThing.dequeue( 0, 250000 );
if( pThing == NULL )
continue;
pThing->y = pThing->x*2;
usleep( 10000 );
workDone();
}
}
ThingQueue &qThing;
Bu::Mutex mRunning;
};
typedef Bu::List<ThingEater *> ThingEaterList;
int main()
{
ThingQueue qThing;
ThingEaterList lEater;
mWorkDone.lock();
iWorkDone = 1000;
mWorkDone.unlock();
for( int j = 0; j < 5; j++ )
lEater.append( new ThingEater( qThing ) );
for( ThingEaterList::iterator i = lEater.begin(); i; i++ )
(*i)->start();
for( int j = 0; j < 1000; j++ )
{
qThing.enqueue( new Thing( j ) );
}
mWorkDone.lock();
mWorkDone.unlock();
cWorkDone.lock();
for(;;)
{
mWorkDone.lock();
if( iWorkDone == 0 )
{
mWorkDone.unlock();
break;
}
mWorkDone.unlock();
cWorkDone.wait();
}
cWorkDone.unlock();
for( ThingEaterList::iterator i = lEater.begin(); i; i++ )
(*i)->setRunning( false );
for( ThingEaterList::iterator i = lEater.begin(); i; i++ )
(*i)->join();
return 0;
}
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