1 /* GridRPC - Fake Grid RPC thingy doing matrix multiplications (as expected)*/
3 /* Copyright (c) 2005 Martin Quinson. All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
8 #define GRAS_DEFINE_TYPE_EXTERN
9 #include "xbt/matrix.h"
12 XBT_LOG_NEW_DEFAULT_CATEGORY(MatMult,"Messages specific to this example");
14 /* register messages which may be sent and their payload
15 (common to client and server) */
16 void mmrpc_register_messages(void) {
17 gras_datadesc_type_t matrix_type, request_type;
19 matrix_type=gras_datadesc_matrix(gras_datadesc_by_name("double"),
21 request_type=gras_datadesc_array_fixed("s_matrix_t(double)[2]",matrix_type,2);
23 gras_msgtype_declare("answer", matrix_type);
24 gras_msgtype_declare("request", request_type);
27 typedef xbt_matrix_t request_t[2];
28 static int server_cb_request_handler(gras_msg_cb_ctx_t ctx,
31 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
33 /* 1. Get the payload into the data variable */
34 xbt_matrix_t *request = (xbt_matrix_t*)payload_data;
37 /* 2. Do the computation */
38 result = xbt_matrix_double_new_mult(request[0], request[1]);
40 /* 3. Send it back as payload of a pong message to the expeditor */
41 gras_msg_send(expeditor, "answer", &result);
44 xbt_matrix_free(request[0]);
45 xbt_matrix_free(request[1]);
46 xbt_matrix_free(result);
47 gras_socket_close(expeditor);
50 } /* end_of_server_cb_request_handler */
52 int server (int argc,char *argv[]) {
54 gras_socket_t sock=NULL;
57 /* 1. Init the GRAS infrastructure */
58 gras_init(&argc,argv);
60 /* 2. Get the port I should listen on from the command line, if specified */
65 /* 3. Create my master socket */
66 INFO1("Launch server (port=%d)", port);
68 sock = gras_socket_server(port);
70 RETHROW0("Unable to establish a server socket: %s");
73 /* 4. Register the known messages and payloads. */
74 mmrpc_register_messages();
76 /* 5. Register my callback */
77 gras_cb_register("request",&server_cb_request_handler);
79 /* 6. Wait up to 10 minutes for an incomming message to handle */
80 gras_msg_handle(600.0);
82 /* 7. Free the allocated resources, and shut GRAS down */
83 gras_socket_close(sock);
91 int client(int argc,char *argv[]) {
93 gras_socket_t toserver=NULL; /* peer */
96 xbt_matrix_t request[2], answer;
100 const char *host = "127.0.0.1";
103 /* 1. Init the GRAS's infrastructure */
104 gras_init(&argc, argv);
106 /* 2. Get the server's address. The command line override defaults when specified */
112 INFO2("Launch client (server on %s:%d)",host,port);
114 /* 3. Wait for the server startup */
117 /* 4. Create a socket to speak to the server */
119 toserver=gras_socket_client(host,port);
121 RETHROW0("Unable to connect to the server: %s");
123 INFO2("Connected to %s:%d.",host,port);
126 /* 5. Register the messages (before use) */
127 mmrpc_register_messages();
129 /* 6. Keep the user informed of what's going on */
130 INFO2(">>>>>>>> Connected to server which is on %s:%d <<<<<<<<",
131 gras_socket_peer_name(toserver),gras_socket_peer_port(toserver));
133 /* 7. Prepare and send the request to the server */
135 request[0] = xbt_matrix_double_new_id(MATSIZE,MATSIZE);
136 request[1] = xbt_matrix_double_new_rand(MATSIZE,MATSIZE);
139 xbt_matrix_dump(request[0],"C:sent0",0,xbt_matrix_dump_display_double);
140 xbt_matrix_dump(request[1],"C:sent1",0,xbt_matrix_dump_display_double);
143 gras_msg_send(toserver, "request", &request);
145 xbt_matrix_free(request[0]);
147 INFO2(">>>>>>>> Request sent to %s:%d <<<<<<<<",
148 gras_socket_peer_name(toserver),gras_socket_peer_port(toserver));
150 /* 8. Wait for the answer from the server, and deal with issues */
151 gras_msg_wait(6000,"answer",&from,&answer);
154 xbt_matrix_dump(answer,"C:answer",0,xbt_matrix_dump_display_double);
156 for (i=0; i<MATSIZE; i++)
157 for (j=0; i<MATSIZE; i++)
158 xbt_assert4(xbt_matrix_get_as(answer,i,j,double)==xbt_matrix_get_as(request[1],i,j,double),
159 "Answer does not match expectations. Found %f at cell %d,%d instead of %f",
160 xbt_matrix_get_as(answer,i,j,double),i,j,
161 xbt_matrix_get_as(request[1],i,j,double));
163 /* 9. Keep the user informed of what's going on, again */
164 INFO2(">>>>>>>> Got answer from %s:%d (values are right) <<<<<<<<",
165 gras_socket_peer_name(from),gras_socket_peer_port(from));
167 /* 10. Free the allocated resources, and shut GRAS down */
168 xbt_matrix_free(request[1]);
169 xbt_matrix_free(answer);
170 gras_socket_close(toserver);
174 } /* end_of_client */