/* cc thisfile.c -lthread -lpthread */
     #define _REENTRANT    /* basic 3-lines for threads */
     #include <pthread.h>
     #include <thread.h>

     #define NUM_THREADS 6
     #define SLEEP_TIME 5

     void *sleeping( void * );   /* thread routine */
     int i;
     thread_t tid[ NUM_THREADS ];      /* array of thread IDs */

     int
     main(int argc, char *argv[])
     {
             if ( argc == 1 )  {
                     printf( "use 0 as arg1 to use pthread_create()\n" );
                     printf( "or use 1 as arg1 to use thr_create()\n" );
                     return (1);
             }

             switch ( *argv[1] )  {
             case '0':  /* POSIX */
                     for ( i = 0; i < NUM_THREADS; i++)
                             pthread_create( &tid[i], NULL, sleeping,
                                 (void *)SLEEP_TIME );
                     for ( i = 0; i < NUM_THREADS; i++)
                             pthread_join( tid[i], NULL );
                     break;

             case '1':  /* Solaris */
                     for ( i = 0; i < NUM_THREADS; i++)
                             thr_create( NULL, 0, sleeping, (void *)SLEEP_TIME, 0,
                                 &tid[i] );
                     while ( thr_join(0, NULL, NULL ) == 0)
                             ;
                     break;
             }  /* switch */
             printf( "main() reporting that all %d threads have terminated\n", i );
             return (0);
     }  /* main */

     void *
     sleeping( void *arg )
     {
             int sleep_time = (int)arg;
             printf( "thread %d sleeping %d seconds ...\n", thr_self(), sleep_time );
             sleep( sleep_time );
             printf( "\nthread %d awakening\n", thr_self() );
             return( NULL );
     }