+++ /dev/null
-/* Copyright (c) 2007, 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 <stdlib.h>
-#include <gras.h>
-
-XBT_LOG_NEW_DEFAULT_CATEGORY(test, "My little example");
-
-void message_declaration(void)
-{
- gras_msgtype_declare("request", NULL);
- gras_msgtype_declare("grant", NULL);
- gras_msgtype_declare("release", NULL);
-}
-
-typedef struct {
- int process_in_CS;
- xbt_dynar_t waiting_queue;
-} server_data_t;
-
-int server_request_cb(gras_msg_cb_ctx_t ctx, void *payload)
-{
- server_data_t *globals = (server_data_t *) gras_userdata_get();
- gras_socket_t s = gras_msg_cb_ctx_from(ctx);
-
- if (globals->process_in_CS) {
- xbt_dynar_push(globals->waiting_queue, &s);
- INFO2("put %s:%d in waiting queue", gras_socket_peer_name(s),
- gras_socket_peer_port(s));
- } else {
- globals->process_in_CS = 1;
- INFO2("grant %s:%d since nobody wanted it", gras_socket_peer_name(s),
- gras_socket_peer_port(s));
- gras_msg_send(s, "grant", NULL);
- }
- return 0;
-} /* end_of_request_callback */
-
-int server_release_cb(gras_msg_cb_ctx_t ctx, void *payload)
-{
- server_data_t *globals = (server_data_t *) gras_userdata_get();
-
- if (xbt_dynar_length(globals->waiting_queue)) {
- gras_socket_t s;
- xbt_dynar_pop(globals->waiting_queue, &s);
-
- INFO2("grant %s:%d since token released", gras_socket_peer_name(s),
- gras_socket_peer_port(s));
- gras_msg_send(s, "grant", NULL);
- } else {
- globals->process_in_CS = 0;
- }
-
- return 0;
-} /* end_of_release_callback */
-
-int server(int argc, char *argv[])
-{
- gras_socket_t mysock; /* socket on which I listen */
- server_data_t *globals;
- int i;
-
- gras_init(&argc, argv);
- mysock = gras_socket_server(atoi(argv[1]));
-
- globals = gras_userdata_new(server_data_t);
- globals->process_in_CS = 0;
- globals->waiting_queue =
- xbt_dynar_new(sizeof(gras_socket_t),
- NULL /* not closing sockets */ );
-
- message_declaration();
- gras_cb_register("request", &server_request_cb);
- gras_cb_register("release", &server_release_cb);
-
- for (i = 0; i < 20; i++) /* 5 requests of each process, 2 processes, 2 messages per request */
- gras_msg_handle(-1);
-
- gras_exit();
- return 0;
-} /* end_of_server */
-
-void lock(gras_socket_t toserver)
-{
- gras_msg_send(toserver, "request", NULL);
- gras_msg_wait(-1, "grant", NULL, NULL);
- INFO0("Granted by server");
-} /* end_of_lock */
-
-void unlock(gras_socket_t toserver)
-{
- INFO0("Release the token");
- gras_msg_send(toserver, "release", NULL);
-} /* end_of_unlock */
-
-int client(int argc, char *argv[])
-{
- int i;
- gras_socket_t mysock; /* socket on which I listen */
- gras_socket_t toserver; /* socket used to write to the server */
-
- gras_init(&argc, argv);
-
- mysock = gras_socket_server_range(1024, 10000, 0, 0);
-
- VERB1("Client ready; listening on %d", gras_socket_my_port(mysock));
-
- gras_os_sleep(1.5); /* sleep 1 second and half */
- message_declaration();
- toserver = gras_socket_client(argv[1], atoi(argv[2]));
-
- for (i = 0; i < 5; i++) {
- gras_os_sleep(0.1);
- lock(toserver);
- gras_os_sleep(0.1);
- unlock(toserver);
- }
- gras_exit();
- return 0;
-}
