3 /* GridRPC - Fake Grid RPC thingy doing matrix multiplications (as expected)*/
5 /* Copyright (c) 2005 Martin Quinson. All rights reserved. */
7 /* This program is free software; you can redistribute it and/or modify it
8 * under the terms of the license (GNU LGPL) which comes with this package. */
10 #define GRAS_DEFINE_TYPE_EXTERN
11 #include "xbt/matrix.h"
14 XBT_LOG_NEW_DEFAULT_CATEGORY(MatMult,"Messages specific to this example");
16 /* register messages which may be sent and their payload
17 (common to client and server) */
18 void mmrpc_register_messages(void) {
19 gras_datadesc_type_t matrix_type, request_type;
21 matrix_type=gras_datadesc_matrix(gras_datadesc_by_name("double"),
23 request_type=gras_datadesc_array_fixed("s_matrix_t(double)[2]",matrix_type,2);
25 gras_msgtype_declare("answer", matrix_type);
26 gras_msgtype_declare("request", request_type);
29 typedef xbt_matrix_t request_t[2];
30 static int server_cb_request_handler(gras_msg_cb_ctx_t ctx,
33 gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
35 /* 1. Get the payload into the data variable */
36 xbt_matrix_t *request = (xbt_matrix_t*)payload_data;
39 /* 2. Do the computation */
40 result = xbt_matrix_double_new_mult(request[0], request[1]);
42 /* 3. Send it back as payload of a pong message to the expeditor */
43 gras_msg_send(expeditor, "answer", &result);
46 xbt_matrix_free(request[0]);
47 xbt_matrix_free(request[1]);
48 xbt_matrix_free(result);
49 gras_socket_close(expeditor);
52 } /* end_of_server_cb_request_handler */
54 int server (int argc,char *argv[]) {
56 gras_socket_t sock=NULL;
59 /* 1. Init the GRAS infrastructure */
60 gras_init(&argc,argv);
62 /* 2. Get the port I should listen on from the command line, if specified */
67 /* 3. Create my master socket */
68 INFO1("Launch server (port=%d)", port);
70 sock = gras_socket_server(port);
72 RETHROW0("Unable to establish a server socket: %s");
75 /* 4. Register the known messages and payloads. */
76 mmrpc_register_messages();
78 /* 5. Register my callback */
79 gras_cb_register("request",&server_cb_request_handler);
81 /* 6. Wait up to 10 minutes for an incomming message to handle */
82 gras_msg_handle(600.0);
84 /* 7. Free the allocated resources, and shut GRAS down */
85 gras_socket_close(sock);
93 int client(int argc,char *argv[]) {
95 gras_socket_t toserver=NULL; /* peer */
98 xbt_matrix_t request[2], answer;
102 const char *host = "127.0.0.1";
105 /* 1. Init the GRAS's infrastructure */
106 gras_init(&argc, argv);
108 /* 2. Get the server's address. The command line override defaults when specified */
114 INFO2("Launch client (server on %s:%d)",host,port);
116 /* 3. Wait for the server startup */
119 /* 4. Create a socket to speak to the server */
121 toserver=gras_socket_client(host,port);
123 RETHROW0("Unable to connect to the server: %s");
125 INFO2("Connected to %s:%d.",host,port);
128 /* 5. Register the messages (before use) */
129 mmrpc_register_messages();
131 /* 6. Keep the user informed of what's going on */
132 INFO2(">>>>>>>> Connected to server which is on %s:%d <<<<<<<<",
133 gras_socket_peer_name(toserver),gras_socket_peer_port(toserver));
135 /* 7. Prepare and send the request to the server */
137 request[0] = xbt_matrix_double_new_id(MATSIZE,MATSIZE);
138 request[1] = xbt_matrix_double_new_rand(MATSIZE,MATSIZE);
141 xbt_matrix_dump(request[0],"C:sent0",0,xbt_matrix_dump_display_double);
142 xbt_matrix_dump(request[1],"C:sent1",0,xbt_matrix_dump_display_double);
145 gras_msg_send(toserver, "request", &request);
147 xbt_matrix_free(request[0]);
149 INFO2(">>>>>>>> Request sent to %s:%d <<<<<<<<",
150 gras_socket_peer_name(toserver),gras_socket_peer_port(toserver));
152 /* 8. Wait for the answer from the server, and deal with issues */
153 gras_msg_wait(6000,"answer",&from,&answer);
156 xbt_matrix_dump(answer,"C:answer",0,xbt_matrix_dump_display_double);
158 for (i=0; i<MATSIZE; i++)
159 for (j=0; i<MATSIZE; i++)
160 xbt_assert4(xbt_matrix_get_as(answer,i,j,double)==xbt_matrix_get_as(request[1],i,j,double),
161 "Answer does not match expectations. Found %f at cell %d,%d instead of %f",
162 xbt_matrix_get_as(answer,i,j,double),i,j,
163 xbt_matrix_get_as(request[1],i,j,double));
165 /* 9. Keep the user informed of what's going on, again */
166 INFO2(">>>>>>>> Got answer from %s:%d (values are right) <<<<<<<<",
167 gras_socket_peer_name(from),gras_socket_peer_port(from));
169 /* 10. Free the allocated resources, and shut GRAS down */
170 xbt_matrix_free(request[1]);
171 xbt_matrix_free(answer);
172 gras_socket_close(toserver);
176 } /* end_of_client */