main()
{
usc_time_t t1, t2;
usc_init();
t1=usc_gettime();
printf("MHZ=%d\n", (int)usc_mhzrate());
t2=usc_gettime();
printf("the above printf takes %lf microseconds.\n", usc_difftime(t2, t1));
printf("t1=%lf, t2=%lf\n", usc_wtime(t1), usc_wtime(t2));
t1=usc_gettime();
sleep(10);
t2=usc_gettime();
printf("sleeping 10 seconds will give me %lf microseconds.\n", usc_difftime(t2, t1));
}
int bm_start(int *argc, char **argv)
{
int bm_switch_port;
char *s, pgmname[P4_MAX_PGM_LEN];
int rc, myjsize, myrank;
BNR_Group mygroup;
setbuf( stdout, NULL ); /* turn off buffering for clients */
alloc_global(); /* sets p4_global */
p4_global->local_communication_only = P4_FALSE; /* hard code for mpd */
p4_local = alloc_local_bm();
if (p4_local == NULL)
p4_error("p4_initenv: alloc_local_bm failed\n", 0);
rc = BNR_Pre_init( p4_peer_msg_handler ); /* specific to mpich-1 */
rc = BNR_Init( );
rc = BNR_Get_group( &mygroup );
rc = BNR_Get_rank( mygroup, &myrank );
rc = BNR_Get_size( mygroup, &myjsize );
p4_dprintfl(10,"IGNORING SIGPIPE\n");
SIGNAL_P4(SIGPIPE,SIG_IGN);
sprintf(whoami_p4, "p%d_%d", myrank, (int)getpid());
p4_global->num_in_proctable = myjsize; /* there really isn't any proctable */
p4_local->my_id = myrank;
p4_local->my_job = BNR_Get_group_id( mygroup ); /* default jobid for now */
setup_conntab();
/* get fd for talking to the manager from the environment, where he put it after
acquiring it. */
rc = BNR_Man_msgs_fd( &(p4_local->parent_man_fd) );
#if 0
/********** This is done for us in the p4mpd device **********/
/* choose a working directory */
if (strlen(p4_wd) && !chdir(p4_wd))
{
p4_dprintfl(90, "working directory for %d set to %s\n", p4_local->my_id, p4_wd);
}
else
{
strncpy(pgmname,argv[0],P4_MAX_PGM_LEN);
pgmname[P4_MAX_PGM_LEN-1] = 0;
if ((s = (char *) rindex(pgmname,'/')) != NULL)
{
*s = '\0'; /* chg to directory name only */
chdir(pgmname);
/* p4_dprintf("RMB bm_start: CHGING DIR TO %s\n",pgmname); */
}
}
#endif
# ifdef SYSV_IPC
sysv_num_shmids = 0;
sysv_shmid[0] = -1;
sysv_semid0 = -1;
sysv_semid0 = init_sysv_semset(0);
# endif
MD_initmem(globmemsize);
if (*bm_outfile)
{
freopen(bm_outfile, "w", stdout);
freopen(bm_outfile, "w", stderr);
}
MD_initenv();
bm_switch_port = getswport(p4_global->my_host_name);
usc_init();
init_usclock();
/* big master installing himself */
install_in_proctable(0, (-1), getpid(), p4_global->my_host_name,
p4_global->my_host_name,
0, P4_MACHINE_TYPE, bm_switch_port);
BNR_Fence( mygroup ); /* to make sure p4 data structures are set before interrupts
can occur */
return (0);
}
