I wrote the following to do some volume testing on a service, may help
you:
boost::mutex mutex;
bool testthreads( std::string& mdoid, std::vector<unsigned char>&
userpin )
{
boost::mutex::scoped_lock lock( mutex );//wait for the main thread
to say go
lock.unlock();//release mutex immediately to allow other threads to
start
performOp();
return true;
}
bool testmultithreaded()
{
printf( "Please enter thread count [1-2048] : " );
std::string input;
std::cin >> input;
unsigned long encCnt = std::strtoul( input.c_str(), NULL, 0 );
if( encCnt == 0 || encCnt > 2048 ) {
printf( "Thread count out of range" );
return false;
}
const int threadCnt = encCnt;
std::vectorboost::thread> threads;
boost::timer t;
boost::mutex::scoped_lock lock( mutex );//lock the mutex to stop
threads from starting
for( int i = 0; i < threadCnt; ++i )
{
threads.push_back( boost::shared_ptrboost::thread( new
boost::thread ( boost::bind( &testthreads, mdoid, userpin ) ) ) );
}
double threadscreated = t.elapsed();
lock.unlock();//start the threads off
for( int i = 0; i < threadCnt; ++i )
{
threads[i]->join();//wait for each thread to finish
}
double threadsFinished = t.elapsed();
boost::mutex::scoped_lock hmilock(hmiMutex);
printf( "%lu threads completed\n", encCnt );
printf( "Threads created in %f seconds\n", threadscreated );
printf( "Threads completed in %f seconds\n", threadsFinished -
threadscreated );
return true;
}
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