1 /* GridRPC - Fake Grid RPC thingy doing matrix multiplications (as expected)*/
3 /* Copyright (c) 2005, 2006, 2007, 2010. The SimGrid Team.
4 * All rights reserved. */
6 /* This program is free software; you can redistribute it and/or modify it
7 * under the terms of the license (GNU LGPL) which comes with this package. */
9 #define GRAS_DEFINE_TYPE_EXTERN
10 #include "xbt/matrix.h"
13 XBT_LOG_NEW_DEFAULT_CATEGORY(MatMult,"Messages specific to this example");
15 /* register messages which may be sent and their payload
16 (common to client and server) */
17 void mmrpc_register_messages(void) {
18 gras_datadesc_type_t matrix_type, request_type;
20 matrix_type=gras_datadesc_matrix(gras_datadesc_by_name("double"),
22 request_type=gras_datadesc_array_fixed("s_matrix_t(double)[2]",matrix_type,2);
24 gras_msgtype_declare("answer", matrix_type);
25 gras_msgtype_declare("request", request_type);
28 typedef xbt_matrix_t request_t[2];
29 static int server_cb_request_handler(gras_msg_cb_ctx_t ctx,
32 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
34 /* 1. Get the payload into the data variable */
35 xbt_matrix_t *request = (xbt_matrix_t*)payload_data;
38 /* 2. Do the computation */
39 result = xbt_matrix_double_new_mult(request[0], request[1]);
41 /* 3. Send it back as payload of a pong message to the expeditor */
42 gras_msg_send(expeditor, "answer", &result);
45 xbt_matrix_free(request[0]);
46 xbt_matrix_free(request[1]);
47 xbt_matrix_free(result);
48 gras_socket_close(expeditor);
51 } /* end_of_server_cb_request_handler */
53 int server (int argc,char *argv[]) {
55 gras_socket_t sock=NULL;
58 /* 1. Init the GRAS infrastructure */
59 gras_init(&argc,argv);
61 /* 2. Get the port I should listen on from the command line, if specified */
66 /* 3. Create my master socket */
67 INFO1("Launch server (port=%d)", port);
69 sock = gras_socket_server(port);
71 RETHROW0("Unable to establish a server socket: %s");
74 /* 4. Register the known messages and payloads. */
75 mmrpc_register_messages();
77 /* 5. Register my callback */
78 gras_cb_register("request",&server_cb_request_handler);
80 /* 6. Wait up to 10 minutes for an incomming message to handle */
81 gras_msg_handle(600.0);
83 /* 7. Free the allocated resources, and shut GRAS down */
84 gras_socket_close(sock);
92 int client(int argc,char *argv[]) {
94 gras_socket_t toserver=NULL; /* peer */
97 xbt_matrix_t request[2], answer;
101 const char *host = "127.0.0.1";
104 /* 1. Init the GRAS's infrastructure */
105 gras_init(&argc, argv);
107 /* 2. Get the server's address. The command line override defaults when specified */
113 INFO2("Launch client (server on %s:%d)",host,port);
115 /* 3. Wait for the server startup */
118 /* 4. Create a socket to speak to the server */
120 toserver=gras_socket_client(host,port);
122 RETHROW0("Unable to connect to the server: %s");
124 INFO2("Connected to %s:%d.",host,port);
127 /* 5. Register the messages (before use) */
128 mmrpc_register_messages();
130 /* 6. Keep the user informed of what's going on */
131 INFO2(">>>>>>>> Connected to server which is on %s:%d <<<<<<<<",
132 gras_socket_peer_name(toserver),gras_socket_peer_port(toserver));
134 /* 7. Prepare and send the request to the server */
136 request[0] = xbt_matrix_double_new_id(MATSIZE,MATSIZE);
137 request[1] = xbt_matrix_double_new_rand(MATSIZE,MATSIZE);
140 xbt_matrix_dump(request[0],"C:sent0",0,xbt_matrix_dump_display_double);
141 xbt_matrix_dump(request[1],"C:sent1",0,xbt_matrix_dump_display_double);
144 gras_msg_send(toserver, "request", &request);
146 xbt_matrix_free(request[0]);
148 INFO2(">>>>>>>> Request sent to %s:%d <<<<<<<<",
149 gras_socket_peer_name(toserver),gras_socket_peer_port(toserver));
151 /* 8. Wait for the answer from the server, and deal with issues */
152 gras_msg_wait(6000,"answer",&from,&answer);
155 xbt_matrix_dump(answer,"C:answer",0,xbt_matrix_dump_display_double);
157 for (i=0; i<MATSIZE; i++)
158 for (j=0; i<MATSIZE; i++)
159 xbt_assert4(xbt_matrix_get_as(answer,i,j,double)==xbt_matrix_get_as(request[1],i,j,double),
160 "Answer does not match expectations. Found %f at cell %d,%d instead of %f",
161 xbt_matrix_get_as(answer,i,j,double),i,j,
162 xbt_matrix_get_as(request[1],i,j,double));
164 /* 9. Keep the user informed of what's going on, again */
165 INFO2(">>>>>>>> Got answer from %s:%d (values are right) <<<<<<<<",
166 gras_socket_peer_name(from),gras_socket_peer_port(from));
168 /* 10. Free the allocated resources, and shut GRAS down */
169 xbt_matrix_free(request[1]);
170 xbt_matrix_free(answer);
171 gras_socket_close(toserver);
175 } /* end_of_client */