-/* $Id$ */
-
/* Thread in charge of listening the network and queuing incoming messages */
-/* Copyright (c) 2007 Martin Quinson. All rights reserved. */
+/* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
+ * All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
#include "gras/Transport/transport_interface.h" /* gras_select */
typedef struct s_gras_msg_listener_ {
- xbt_queue_t incomming_messages;
+ xbt_queue_t incomming_messages; /* messages received from the wire and still to be used by master */
xbt_queue_t socks_to_close; /* let the listener close the sockets, since it may be selecting on them. Darwin don't like this trick */
gras_socket_t wakeup_sock_listener_side;
gras_socket_t wakeup_sock_master_side;
static void listener_function(void *p)
{
gras_msg_listener_t me = (gras_msg_listener_t) p;
- s_gras_msg_t msg;
+ gras_msg_t msg;
xbt_ex_t e;
gras_msgtype_t msg_wakeup_listener_t =
gras_msgtype_by_name("_wakeup_listener");
DEBUG0("I'm the listener");
+
+ /* get a free socket for the receiving part of the listener */
+ me->wakeup_sock_listener_side = gras_socket_server_range(5000, 6000, -1, 0);
+
+
+ /* Main loop */
while (1) {
- DEBUG0("Selecting");
- msg.expe = gras_trp_select(-1);
- DEBUG0("Select returned something");
- gras_msg_recv(msg.expe, &msg);
- if (msg.type != msg_wakeup_listener_t)
- xbt_queue_push(me->incomming_messages, &msg);
- else {
- char got = *(char *) msg.payl;
+ msg = gras_msg_recv_any();
+ if (msg->type != msg_wakeup_listener_t) {
+ VERB1("Got a '%s' message. Queue it for handling by main thread",
+ gras_msgtype_get_name(msg->type));
+ xbt_queue_push(me->incomming_messages, msg);
+ } else {
+ char got = *(char *) msg->payl;
if (got == '1') {
VERB0("Asked to get awake");
- free(msg.payl);
+ free(msg->payl);
+ free(msg);
} else {
VERB0("Asked to die");
- // gras_socket_close(me->wakeup_sock_listener_side);
- free(msg.payl);
+ //gras_socket_close(me->wakeup_sock_listener_side);
+ free(msg->payl);
+ free(msg);
return;
}
}
int sock;
xbt_queue_shift_timed(me->socks_to_close, &sock, 0);
if (tcp_close(sock) < 0) {
+#ifdef _XBT_WIN32
+ WARN2("error while closing tcp socket %d: %d\n", sock, sock_errno);
+#else
WARN3("error while closing tcp socket %d: %d (%s)\n",
sock, sock_errno, sock_errstr(sock_errno));
+#endif
}
}
}
}
}
-gras_msg_listener_t gras_msg_listener_launch(xbt_queue_t msg_exchange)
+gras_msg_listener_t gras_msg_listener_launch(xbt_queue_t msg_received)
{
gras_msg_listener_t arg = xbt_new0(s_gras_msg_listener_t, 1);
- int my_port;
- DEBUG0("Launch listener");
- arg->incomming_messages = msg_exchange;
+ VERB0("Launch listener");
+ arg->incomming_messages = msg_received;
arg->socks_to_close = xbt_queue_new(0, sizeof(int));
- /* get a free socket for the receiving part of the listener, taking care that it does not get saved as "myport" number */
- my_port =
- ((gras_trp_procdata_t) gras_libdata_by_id(gras_trp_libdata_id))->myport;
- arg->wakeup_sock_listener_side =
- gras_socket_server_range(5000, 6000, -1, 0);
- ((gras_trp_procdata_t) gras_libdata_by_id(gras_trp_libdata_id))->myport =
- my_port;
- /* Connect the other part of the socket */
- arg->wakeup_sock_master_side =
- gras_socket_client(gras_os_myname(),
- gras_socket_my_port(arg->wakeup_sock_listener_side));
/* declare the message used to awake the listener from the master */
gras_msgtype_declare("_wakeup_listener", gras_datadesc_by_name("char"));
/* actually start the thread */
- arg->listener = xbt_thread_create("listener", listener_function, arg);
- gras_os_sleep(0); /* TODO: useless? give the listener a chance to initialize even if the main is empty and we cancel it right afterward */
+ arg->listener = xbt_thread_create("listener", listener_function, arg,1/*joinable*/);
+ gras_os_sleep(0); /* give the listener a chance to initialize before we connect to its socket */
+
+ /* We do an active wait until the listener had created the socket (FIXME: ugly hack ) */
+ while(arg->wakeup_sock_listener_side == NULL);
+
+ /* Connect the other part of the socket */
+ arg->wakeup_sock_master_side =
+ gras_socket_client(gras_os_myname(),
+ gras_socket_my_port(arg->wakeup_sock_listener_side));
return arg;
}
#include "gras/Virtu/virtu_private.h" /* procdata_t content */
-void gras_msg_listener_shutdown(gras_msg_listener_t l)
+void gras_msg_listener_shutdown()
{
gras_procdata_t *pd = gras_procdata_get();
char kill = '0';
DEBUG0("Listener quit");
-
if (pd->listener)
gras_msg_send(pd->listener->wakeup_sock_master_side, "_wakeup_listener",
- &kill);
+ &kill);
- /* FIXME: thread_join is not implemented in SG (remove next conditional when fixed)
- * But I guess it's not a big deal since we're terminating the thread mainly to
- * make it free its OS locks on darwin.
- * darwin is definitly different from the neat & nice SG world */
- if (gras_if_RL())
- xbt_thread_join(pd->listener->listener);
+ xbt_thread_join(pd->listener->listener);
// gras_socket_close(pd->listener->wakeup_sock_master_side); FIXME: uncommenting this leads to deadlock at terminaison
- xbt_queue_free(&l->incomming_messages);
- xbt_queue_free(&l->socks_to_close);
- xbt_free(l);
+ xbt_queue_free(&pd->listener->incomming_messages);
+ xbt_queue_free(&pd->listener->socks_to_close);
+ xbt_free(pd->listener);
}
void gras_msg_listener_awake()