#include <iostream>
#include <cstdlib>

using namespace std;

#include <pthread.h>
#include <unistd.h>
#include <sys/select.h>
#include <sys/time.h>

using namespace std;

static int threadscount = 0;
pthread_mutex_t threadscount_mutex = PTHREAD_MUTEX_INITIALIZER;



void* thread( void* data ){
		pthread_mutex_lock( &threadscount_mutex );
		threadscount--;
		//cout << threadscount << endl;
		pthread_mutex_unlock( &threadscount_mutex );
		pthread_exit(0);
}

int main(int argc, char *argv[]){
		int count = 0;
		int a;
		
		struct timeval timeout;

		while (1){
				for ( int a = 1; a <= 10; a++ ){
						pthread_mutex_lock( &threadscount_mutex );
						threadscount++;
						pthread_mutex_unlock( &threadscount_mutex );
						pthread_t  p_thread;       /* thread's structure                     */
						pthread_create(&p_thread, 0, thread, (void*)&a);
						pthread_detach( p_thread );

						count ++;
				}
				cout << "count: " << count << endl;
				int c;
				do {
						timeout.tv_usec = 100;
						timeout.tv_sec = 0;
						select( 0, 0, 0, 0, &timeout );

						pthread_mutex_lock( &threadscount_mutex );
						c = threadscount;
						pthread_mutex_unlock( &threadscount_mutex );
					} while ( c > 0);
						
		}
}