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#include <bu/readwritemutex.h>
#include <bu/thread.h>
#include <bu/randomcmwc.h>
#include <bu/sio.h>
using namespace Bu;
ReadWriteMutex mRW;
bool bRunning;
class Writer : public Thread
{
public:
Writer( int iId ) :
iId( iId ),
rand( iId )
{
}
virtual ~Writer()
{
}
protected:
virtual void run()
{
while( bRunning )
{
mRW.lockWrite();
println("Writer %1 locking.").arg( iId );
usleep( rand.rand(5,10)*100000 );
println("Writer %1 unlocking.").arg( iId );
mRW.unlockWrite();
usleep( rand.rand(5,10)*10000 );
}
}
private:
int iId;
RandomCmwc rand;
};
class Reader : public Thread
{
public:
Reader( int iId ) :
iId( iId ),
rand( -iId )
{
}
virtual ~Reader()
{
}
protected:
virtual void run()
{
while( bRunning )
{
mRW.lockRead();
println("Reader %1 locking.").arg( iId );
usleep( rand.rand(5,10)*100000 );
println("Reader %1 unlocking.").arg( iId );
mRW.unlockRead();
usleep( rand.rand(5,10)*10000 );
}
}
private:
int iId;
RandomCmwc rand;
};
#define CNT 5
int main()
{
bRunning = true;
Thread **threads = new Thread*[CNT*2];
for( int j = 0; j < CNT; j++ )
{
threads[j] = new Reader( j+1 );
threads[j+CNT] = new Writer( j+1 );
}
println("Starting.");
for( int j = 0; j < CNT*2; j++ )
threads[j]->start();
sleep( 10 );
bRunning = false;
for( int j = 0; j < CNT*2; j++ )
{
threads[j]->join();
delete threads[j];
}
delete[] threads;
return 0;
}
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