void trans_recv_hi(void) { unsigned int amnt_hi = 1; long evt_hi; td_t td_hi; char *params_hi = "7"; printc("***HIGH PRIO RECV STARTING***\n"); evt_hi = evt_split(cos_spd_id(), 0, 0); assert(evt_hi > 0); td_hi = tsplit(cos_spd_id(), td_root, params_hi, strlen(params_hi), TOR_READ, evt_hi); printc("EVT_HI (%ld) TD_HI (%d)\n", evt_hi, td_hi); do { evt_wait(cos_spd_id(), evt_hi); // if((amnt_hi++ % 1000) == 0) printc("hi prio count (%u) spd(%d) tid(%d)\n", amnt_hi++, cos_spd_id(), cos_get_thd_id()); } while (1);//cur_itr++ < ITR); return; }
//static volatile int cur_itr = 0; void trans_recv_lo(void) { unsigned int amnt_lo = 1; long evt_lo; td_t td_lo; char *params_lo = "8"; printc("***LOW PRIO RECV STARTING***\n"); evt_lo = evt_split(cos_spd_id(), 0, 0); assert(evt_lo > 0); td_lo = tsplit(cos_spd_id(), td_root, params_lo, strlen(params_lo), TOR_READ, evt_lo); printc("EVT_LO (%ld) TD_LO (%d)\n", evt_lo, td_lo); do { evt_wait(cos_spd_id(), evt_lo); // if((amnt_lo++ % 1000) == 0) printc("lo prio count (%u) spd(%d) tid(%d)\n", amnt_lo++, cos_spd_id(), cos_get_thd_id()); } while (1);//cur_itr++ < ITR); return; }
/* Acquire a lock on a Mutex */ PA_RET conc_mutex_lock(conc_mutex_t *mutex) { task_t * current_task; base_paos_lock(); /* To test and set mutex->locked_task without context switching nor interrupt handling */ if ( mutex->locked_task == NULL ) { /* The mutex is not locked yet */ mutex->locked_task = sched_current_task(); } else { /* The mutex is already locked */ current_task = sched_current_task(); /* The current task yields while md_paos_lock is called */ evt_wait( &mutex->mutex_unlock_event, current_task ); PA_ASSERT( mutex->locked_task == NULL ); mutex->locked_task = current_task; } base_paos_unlock(); return 0; }
static inline struct desc_track *call_desc_update(long id, int next_state) { struct desc_track *desc = NULL; unsigned int from_state = 0; unsigned int to_state = 0; /* reach the root id */ if (id == 0) { return NULL; } desc = call_desc_lookup(id); if (unlikely(!desc)) { block_cli_if_upcall_creator(id); goto done; } desc->next_state = next_state; if (likely(desc->fault_cnt == global_fault_cnt)) goto done; desc->fault_cnt = global_fault_cnt; // State machine transition under the fault block_cli_if_recover(id); from_state = desc->state; to_state = next_state; if ((from_state == state_evt_split) && (to_state == state_evt_trigger)) { evt_wait(desc->spdid, desc->evtid); goto done; } done: return desc; }
void cos_init(void *arg) { td_t t1, serv; long evt; char *params1 = "foo", *params2 = "", *d; int period, num, ret, sz, i, j; u64_t start = 0, end = 0, re_cbuf; cbuf_t cb1; union sched_param sp; static int first = 1; if (first) { first = 0; sp.c.type = SCHEDP_PRIO; sp.c.value = 9; if (sched_create_thd(cos_spd_id(), sp.v, 0, 0) == 0) BUG(); return ; } evt = evt_split(cos_spd_id(), 0, 0); assert(evt > 0); serv = tsplit(cos_spd_id(), td_root, params1, strlen(params1), TOR_RW, evt); if (serv < 1) { printc("UNIT TEST FAILED: split1 failed %d\n", serv); } evt_wait(cos_spd_id(), evt); printc("client split successfully\n"); sz = 4096; j = 1000*ITER; rdtscll(start); for (i=1; i<=j; i++) { if (i == j) rdtscll(end); d = cbuf_alloc(sz, &cb1); if (!d) goto done; cbuf_send(cb1); rdtscll(end); ((u64_t *)d)[0] = end; ret = twritep(cos_spd_id(), serv, cb1, sz); cbuf_free(cb1); } printc("Client snd %d times %llu\n", j-1, (end-start)/(j-1)); /* * insert evt_grp_wait(...) into the code below where it makes * sense to. Simulate if the code were executing in separate * threads. */ parse_args(&period, &num); periodic_wake_create(cos_spd_id(), period); re_cbuf = 0; for (i=1; i<=ITER; i++) { for (j=0; j<num; j++) { rdtscll(start); d = cbuf_alloc(i*sz, &cb1); if (!d) goto done; cbuf_send_free(cb1); rdtscll(end); re_cbuf = re_cbuf+(end-start); rdtscll(end); ((u64_t *)d)[0] = end; ret = twritep(cos_spd_id(), serv, cb1, i*sz); } periodic_wake_wait(cos_spd_id()); } printc("Client: Period %d Num %d Cbuf %llu\n", period, num, re_cbuf/(num*ITER)); done: trelease(cos_spd_id(), serv); printc("client UNIT TEST PASSED: split->release\n"); printc("client UNIT TEST ALL PASSED\n"); return; }
static inline long evt_wait_all(void) { return evt_wait(cos_spd_id(), evt_all[cos_get_thd_id()]); }
int main (const int argc, const char *argv[]) { /* Result of operation */ int res; char buffer[255]; /* The socket and its fd */ soc_token socket = init_soc; int fd; /* Event result */ boolean read; timeout_t timeout; int evtfd; /* parse arguments */ parse_args (argc, argv); /* Create socket and get fd */ if ( (res = soc_open (&socket, udp_socket)) != SOC_OK) { trace ("soc_open error", soc_error (res)); error ("cannot open socket", ""); } if ( (res = soc_get_id (socket, &fd)) != SOC_OK) { trace ("soc_get_id error", soc_error (res)); error ("cannot get socket fd", ""); } /* Bind socket to lan:port */ bind_socket (socket); /* Attach fd for reading */ if ( (res = evt_add_fd (fd, TRUE)) != WAIT_OK) { trace ("evt_add_fd error", ""); error ("cannot add fd", ""); } /* Main loop */ timeout.tv_sec = -1; timeout.tv_usec = -1; for (;;) { /* Infinite wait for events */ if ( (res = evt_wait (&evtfd, & read, &timeout)) != WAIT_OK) { trace ("evt_wait error", ""); error ("cannot wait for event", ""); } /* Analyse event */ if (evtfd == SIG_EVENT) { if (get_signal() == SIG_TERMINATE) { /* Sigterm/sigint */ break; } /* else unexpected signal => drop */ } else if (evtfd == fd) { /* Got a packet: read it */ res = soc_receive (socket, message, sizeof(message), TRUE); if (res < 0) { sprintf (buffer, "%d", res); trace ("soc_receive error", soc_error (res)); error ("cannot read message", soc_error(res)); } else { if (res > (int)sizeof(message)) { sprintf (buffer, "%d", res); trace ("soc_receive truncated message length", "buffer"); res = (int)sizeof(message); } /* Put message info */ display (socket, message, res); } } else if (evtfd >= 0) { /* Unexpected event on an unexpected fd */ sprintf (buffer, "%d", evtfd); trace ("evt_wait got unexpected even on fd", "buffer"); error ("even on unexpected fd", ""); } } /* Main loop */ /* Done */ (void) evt_del_fd (fd, TRUE); (void) soc_close (&socket); the_end (); }
int main (int argc, char *argv[]) { timeout_t timeout; int timeout_ms; int accuracy_ms; soc_token soc = init_soc; soc_port port_no; char lan_name[80]; synchro_msg_t synchro_msg; soc_length length; int cr, fd; boolean read; unsigned int travel_ms; timeout_t request_time, reply_time, travel_delta; timeout_t accuracy_timeout, wait_timeout; if ( (argc != 2) && (argc != 3) && (argc != 4) ) { fprintf (stderr, "SYNTAX error : Wrong number of arguments\n"); USAGE(); exit (1); } if (argc >= 3) { timeout_ms = atoi(argv[2]); if (timeout_ms <= 0) { fprintf (stderr, "SYNTAX error : Wrong timeout value\n"); USAGE(); exit (1); } } else { timeout_ms = DEFAULT_TIMEOUT_MS; } wait_timeout.tv_sec = timeout_ms / 1000; wait_timeout.tv_usec = (timeout_ms % 1000) * 1000; if (argc == 4) { accuracy_ms = atoi(argv[3]); if (accuracy_ms <= 0) { fprintf (stderr, "SYNTAX error : Wrong accuracy value\n"); USAGE(); exit (1); } } else { accuracy_ms = DEFAULT_ACCURACY_MS; } accuracy_timeout.tv_sec = accuracy_ms / 1000; accuracy_timeout.tv_usec = (accuracy_ms % 1000) * 1000; if (soc_get_local_lan_name(lan_name, sizeof(lan_name)) != SOC_OK) { perror ("getting lan name"); exit (1); } if (soc_open(&soc, udp_socket) != SOC_OK) { perror ("opening socket"); exit (1); } port_no = atoi(argv[1]); if (port_no <= 0) { if (soc_set_dest_name_service(soc, lan_name, true, argv[1]) != SOC_OK) { perror ("setting destination service"); exit (1); } } else { if (soc_set_dest_name_port(soc, lan_name, true, port_no) != SOC_OK) { perror ("setting destination port"); exit (1); } } if (soc_get_dest_port(soc, &port_no) != SOC_OK) { perror ("getting destination port no"); exit (1); } if (soc_link_port(soc, port_no) != SOC_OK) { perror ("linking socket"); exit (1); } /* List for wait */ if (soc_get_id(soc, &fd) != SOC_OK) { perror ("getting socket id"); exit (1); } if (evt_add_fd(fd, TRUE) != WAIT_OK) { perror("Adding fd"); exit (1); } for (;;) { synchro_msg.magic_number = magic_request_value; get_time (&(synchro_msg.request_time)); cr = soc_send (soc, (soc_message) &synchro_msg, sizeof(synchro_msg)); if (cr != SOC_OK) { perror ("sending request"); exit (1); } request_time = synchro_msg.request_time; for (;;) { timeout = wait_timeout; if (evt_wait (&fd, &read, &timeout) != WAIT_OK) { perror ("waiting for event"); exit (1); } if (fd == NO_EVENT) { printf ("Timeout expired. Giving up.\n"); exit (2); } else if (fd <= 0) { /* Other non fd event */ continue; } length = sizeof (synchro_msg); cr = soc_receive (soc, (soc_message) &synchro_msg, length, FALSE); get_time (&reply_time); if ( cr == sizeof (synchro_msg) ) { if (synchro_msg.magic_number == magic_request_value) { ; } else if ( (synchro_msg.magic_number == magic_reply_value) && (synchro_msg.request_time.tv_sec == request_time.tv_sec) && (synchro_msg.request_time.tv_usec == request_time.tv_usec) ) { travel_delta = reply_time; (void) sub_time (&travel_delta, &request_time); if (comp_time(&travel_delta, &accuracy_timeout) > 0) { printf ("Insuficient accuracy. Skipping...\n"); break; } /* Compute time (reply + travel/2) and settimofday */ travel_ms = travel_delta.tv_sec * 1000; travel_ms += travel_delta.tv_usec / 1000; incr_time (&synchro_msg.server_time, travel_ms / 2); (void) sub_time (&reply_time, &synchro_msg.server_time); printf ("Synchro %ld.%06d s\n", reply_time.tv_sec, (int)reply_time.tv_usec); if (settimeofday (&synchro_msg.server_time, NULL) < 0) { perror ("settimeofday"); exit (1); } exit (0); } else { fprintf (stderr, "Error : wrong reply received"); } } else if (cr != SOC_OK) { perror ("receiving reply"); } else { fprintf (stderr, "Error : wrong reply received"); } } /* Reset dest */ if (soc_set_dest_name_port(soc, lan_name, true, port_no) != SOC_OK) { perror ("linking socket"); exit (1); } } }
static inline long evt_wait_all(void) { return evt_wait(cos_spd_id(), evt_all); }
/* THE MAIN */ int main (const int argc, const char * argv[]) { /* Socket data */ soc_token soc = init_soc; soc_host lan; soc_port port; int soc_fd, fd; /* Socket message */ msg_type msg; /* Times and timeouts */ timeout_t start_time, end_time, current_time; timeout_t wait_timeout; double local_time, remote_time; /* Dynamic list of server infos */ dlist list; info_type info; /* Utilities */ boolean for_read; char buff[256]; int res; char *index; /*********/ /* Start */ /*********/ /* Save prog name */ strcpy (prog, argv[0]); strcpy (prog, basename (prog)); /*******************/ /* Parse arguments */ /*******************/ /* Check args */ if (argc != 2) { error ("Invalid argument"); } /* Parse IPM address and port */ strcpy (buff, argv[1]); index = strstr (buff, ":"); if (index == NULL) { error ("Invalid argument"); } *index = '\0'; index++; if (soc_str2host (buff, &lan) != SOC_OK) { sprintf (buff, "Invalid ipm address %s", buff); error (buff); } if (soc_str2port (index, &port) != SOC_OK) { sprintf (buff, "Invalid port num %s", index); error (buff); } /**************/ /* Initialize */ /**************/ /* Init dynamic list */ dlist_init (& list, sizeof(info_type)); /* Init socket */ if (soc_open (&soc, udp_socket) != SOC_OK) { perror ("opening socket"); error ("Socket initialization failed"); } if (soc_set_dest_host_port (soc, &lan, port) != SOC_OK) { perror ("setting destination"); error ("Socket initialization failed"); } if (soc_link_port (soc, port) != SOC_OK) { perror ("linking to port"); error ("Socket initialization failed"); } if (soc_get_dest_host (soc, &lan) != SOC_OK) { perror ("getting dest lan"); error ("Socket initialization failed"); } if (soc_get_dest_port (soc, &port) != SOC_OK) { perror ("getting dest port"); error ("Socket initialization failed"); } /* Add socket to waiting point */ if (soc_get_id(soc, &soc_fd) != SOC_OK) { perror ("getting socket id"); error ("Socket initialization failed"); } if (evt_add_fd(soc_fd, TRUE) != WAIT_OK) { perror("Adding fd"); error ("Socket initialization failed"); } /* Activate signal catching */ activate_signal_handling(); /* Report starting */ buff[0]='\0'; addr_image (&lan, buff); printf ("%s mcasting at address %s on port %d.\n", prog, buff, (int) port); /* Init times */ get_time (&start_time); current_time = start_time; end_time = start_time; incr_time (&end_time, DELAY_CLIENT_MS); /* Send initial ping request */ msg.ping = TRUE; msg.time = start_time; if (soc_send (soc, (soc_message) &msg, sizeof(msg)) != SOC_OK) { perror ("sending ping"); error ("Sending ping request failed"); } /*************/ /* Main loop */ /*************/ for (;;) { /* First step is to loop until timeout */ if (wait_timeout.tv_sec != -1) { wait_timeout = end_time; res = sub_time (&wait_timeout, ¤t_time); if (res <= 0) { break; } } if (evt_wait (&fd, &for_read, &wait_timeout) != WAIT_OK) { perror ("waiting for event"); error ("Waiting for events failed"); } if (! for_read) { error ("Write event received"); } /* Termination signal */ if (fd == SIG_EVENT) { if (get_signal () == SIG_TERMINATE) { break; } } else if (fd == NO_EVENT) { /* Timeout: first step ends with a dump of servers */ if (dlist_length(&list) != 0) { dlist_rewind (&list, TRUE); for (;;) { dlist_read (&list, &info); /* Get host name if possible, else dump address */ res = soc_host_name_of (&info.host, buff, sizeof(buff)); if (res != SOC_OK) { buff[0]='\0'; addr_image (&info.host, buff); } /* Compute (Start_time + Reception_time) / 2 */ local_time = (time_to_double (&start_time) + time_to_double (&info.reception_time) ) / 2.0; remote_time = time_to_double (&info.server_time); printf ("Host %s is shifted by %4.03fs\n", buff, remote_time - local_time); /* Done when last record has been put */ if (dlist_get_pos (&list, FALSE) == 1) { break; } dlist_move (&list, TRUE); } } /* Now entering second step: infinite timeout */ wait_timeout.tv_sec = -1; wait_timeout.tv_usec = -1; printf ("%s ready.\n", prog); } else if (fd != soc_fd) { sprintf (buff, "Invalid fd %d received", fd); error (buff); } else { /* Now this is the socket, read message */ res = soc_receive (soc, (soc_message) &msg, sizeof(msg), TRUE); if (res < 0) { perror ("reading from socket"); error ("Reading message failed"); } else if (res != sizeof(msg)) { sprintf (buff, "Invalid size received, expected %d, got %d", (int)sizeof(msg), res); error (buff); } get_time (¤t_time); /* Client and server different behaviours */ if ((wait_timeout.tv_sec != -1) && !msg.ping) { /* First step: store the address and time of server, if pong */ if (soc_get_dest_host (soc, &(info.host)) != SOC_OK) { perror ("getting dest host"); error ("Getting server address failed"); } info.server_time = msg.time; info.reception_time = current_time; dlist_insert (&list, &info, TRUE); } else if ( (wait_timeout.tv_sec == -1) && msg.ping) { /* Second step: reply pong and time to ping */ msg.time = current_time; msg.ping = FALSE; if (soc_send (soc, (soc_message) &msg, sizeof(msg)) != SOC_OK) { perror ("sending pong"); error ("Sending pong request failed"); } } } } /* End of main loop */ /* Clean - Close */ dlist_delete_all (&list); (void) evt_del_fd (soc_fd, TRUE); (void) soc_close (&soc); printf ("Done.\n"); exit (0); }