* under the terms of the license (GNU LGPL) which comes with this package. */
#include "gras/Msg/msg_private.h"
+#include "gras/Transport/transport_private.h"
XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_msg_read,gras_msg,"Message reader thread");
#include "xbt/ex.h"
#include "xbt/queue.h"
#include "xbt/synchro.h"
-//#include "gras/Virtu/virtu_interface.h"
-//#include "gras/DataDesc/datadesc_interface.h"
#include "gras/Transport/transport_interface.h" /* gras_select */
-//#include "portable.h" /* execinfo when available to propagate exceptions */
-
typedef struct s_gras_msg_listener_ {
xbt_queue_t incomming_messages;
+ 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;
xbt_thread_t listener;
} s_gras_msg_listener_t;
static void listener_function(void *p) {
gras_msg_listener_t me = (gras_msg_listener_t)p;
s_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");
while (1) {
+ DEBUG0("Selecting");
msg.expe = gras_trp_select(-1);
+ DEBUG0("Select returned something");
gras_msg_recv(msg.expe, &msg);
- xbt_queue_push(me->incomming_messages, &msg);
+ if (msg.type!=msg_wakeup_listener_t)
+ xbt_queue_push(me->incomming_messages, &msg);
+ else {
+ char got = *(char*)msg.payl;
+ if (got == '1') {
+ VERB0("Asked to get awake");
+ } else {
+ VERB0("Asked to die");
+ return ;
+ }
+ }
+ /* empty the list of sockets to trash */
+ TRY {
+ while (1) {
+ int sock;
+ xbt_queue_shift_timed(me->socks_to_close,&sock,0);
+ if(tcp_close(sock) < 0) {
+ WARN3("error while closing tcp socket %d: %d (%s)\n",
+ sock, sock_errno, sock_errstr(sock_errno));
+ }
+ }
+ } CATCH(e) {
+ if (e.category != timeout_error)
+ RETHROW;
+ xbt_ex_free(e);
+ }
}
}
gras_msg_listener_t
gras_msg_listener_launch(xbt_queue_t msg_exchange){
gras_msg_listener_t arg = xbt_new0(s_gras_msg_listener_t,1);
+ int my_port;
+ DEBUG0("Launch listener");
arg->incomming_messages = msg_exchange;
+ 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));
- arg->listener = xbt_thread_create(listener_function,&arg);
+ /* 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 */
return arg;
}
+#include "gras/Virtu/virtu_private.h" /* procdata_t content */
void gras_msg_listener_shutdown(gras_msg_listener_t l) {
- xbt_thread_cancel(l->listener);
+ 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);
+
+ /* 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_queue_free(&l->incomming_messages);
+ xbt_queue_free(&l->socks_to_close);
xbt_free(l);
}
+
+void gras_msg_listener_awake(){
+ gras_procdata_t *pd;
+ char c = '1';
+
+ DEBUG0("Awaking the listener");
+ pd = gras_procdata_get();
+ if (pd->listener) {
+ gras_msg_send(pd->listener->wakeup_sock_master_side,"_wakeup_listener",&c);
+ }
+}
+void gras_msg_listener_close_socket(int sd) {
+ gras_procdata_t *pd = gras_procdata_get();
+ if (pd->listener) {
+ xbt_queue_push(pd->listener->socks_to_close,&sd);
+ gras_msg_listener_awake();
+ } else {
+ /* do it myself */
+ tcp_close(sd);
+ }
+}
