+++ /dev/null
-/* spawn - demo of the gras_agent_spawn function */
-
-/* Copyright (c) 2007 Martin Quinson. 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 "spawn.h"
-
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(Spawn);
-
-/* Global private data */
-typedef struct {
- gras_socket_t sock;
- int msg_got;
-} father_data_t;
-
-
-static int father_cb_ping_handler(gras_msg_cb_ctx_t ctx, void *payload)
-{
-
- xbt_ex_t e;
- /* 1. Get the payload into the msg variable, and retrieve my caller */
- int msg = *(int *) payload;
- gras_socket_t expeditor = gras_msg_cb_ctx_from(ctx);
-
- /* 2. Retrieve the father's state (globals) */
- father_data_t *globals = (father_data_t *) gras_userdata_get();
- globals->msg_got++;
-
- /* 3. Log which client connected */
- INFO3("Kid %s:%d pinged me with %d",
- gras_socket_peer_name(expeditor), gras_socket_peer_port(expeditor),
- msg);
-
- /* 4. Change the value of the msg variable */
- msg = 4321;
- /* 5. Send it back as payload of a pong message to the expeditor */
- TRY {
- gras_msg_send(expeditor, "pong", &msg);
-
- /* 6. Deal with errors: add some details to the exception */
- } CATCH(e) {
- gras_socket_close(globals->sock);
- RETHROW0("Unable to answer to my poor child: %s");
- }
- INFO2("Answered to %s:%d's request",
- gras_socket_peer_name(expeditor), gras_socket_peer_port(expeditor));
-
- /* 7. Tell GRAS that we consummed this message */
- return 0;
-} /* end_of_father_cb_ping_handler */
-
-int father(int argc, char *argv[])
-{
- father_data_t *globals;
-
- int port = 4000;
- int child_amount = 5;
- char **child_args;
- int i;
-
- /* 1. Init the GRAS infrastructure and declare my globals */
- gras_init(&argc, argv);
- globals = gras_userdata_new(father_data_t);
-
- /* 2. Get args from the command line, if specified */
- if (argc == 2) {
- port = atoi(argv[1]);
- child_amount = atoi(argv[2]);
- }
-
- /* 3. Initialize my globals (mainly create my master socket) */
- globals->sock = gras_socket_server(port);
- globals->msg_got = 0;
-
- /* 4. Register the known messages. */
- spawn_register_messages();
-
- /* 5. Register my callback */
- gras_cb_register("ping", &father_cb_ping_handler);
-
- /* 6. Spawn the kids */
- INFO0("Spawn the kids");
- for (i = 0; i < child_amount; i++) {
- child_args = xbt_new0(char *, 3);
- child_args[0] = xbt_strdup("child");
- child_args[1] = bprintf("%d", port);
- child_args[2] = NULL;
- gras_agent_spawn("child", NULL, child, 2, child_args, NULL);
- }
-
- /* 7. Wait to be contacted be the kids */
- while (globals->msg_got < child_amount)
- gras_msg_handle(60.0);
- INFO0("All kids gone. Leave now.");
-
- /* 8. Free the allocated resources, and shut GRAS down */
- gras_socket_close(globals->sock);
- free(globals);
- gras_exit();
-
- return 0;
-} /* end_of_father */
