+/* $Id$ */
+
+/* GridRPC - Fake Grid RPC thingy doing matrix multiplications (as expected)*/
+
+/* Copyright (c) 2005 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. */
+
+#define GRAS_DEFINE_TYPE_EXTERN
+#include "xbt/matrix.h"
+#include "mmrpc.h"
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(MatMult,"Messages specific to this example");
+
+/* register messages which may be sent and their payload
+ (common to client and server) */
+void mmrpc_register_messages(void) {
+ gras_datadesc_type_t matrix_type, request_type;
+
+ matrix_type=gras_datadesc_matrix(gras_datadesc_by_name("double"),
+ NULL);
+ request_type=gras_datadesc_array_fixed("s_matrix_t(double)[2]",matrix_type,2);
+
+ gras_msgtype_declare("answer", matrix_type);
+ gras_msgtype_declare("request", request_type);
+}
+
+typedef xbt_matrix_t request_t[2];
+static int server_cb_request_handler(gras_msg_cb_ctx_t ctx,
+ void *payload_data) {
+
+ gras_socket_t expeditor=gras_msg_cb_ctx_from(ctx);
+
+ /* 1. Get the payload into the data variable */
+ xbt_matrix_t *request = (xbt_matrix_t*)payload_data;
+ xbt_matrix_t result;
+
+ /* 2. Do the computation */
+ result = xbt_matrix_double_new_mult(request[0], request[1]);
+
+ /* 3. Send it back as payload of a pong message to the expeditor */
+ gras_msg_send(expeditor, "answer", &result);
+
+ /* 4. Cleanups */
+ xbt_matrix_free(request[0]);
+ xbt_matrix_free(request[1]);
+ xbt_matrix_free(result);
+ gras_socket_close(expeditor);
+
+ return 0;
+} /* end_of_server_cb_request_handler */
+
+int server (int argc,char *argv[]) {
+ xbt_ex_t e;
+ gras_socket_t sock=NULL;
+ int port = 4000;
+
+ /* 1. Init the GRAS infrastructure */
+ gras_init(&argc,argv);
+
+ /* 2. Get the port I should listen on from the command line, if specified */
+ if (argc == 2) {
+ port=atoi(argv[1]);
+ }
+
+ /* 3. Create my master socket */
+ INFO1("Launch server (port=%d)", port);
+ TRY {
+ sock = gras_socket_server(port);
+ } CATCH(e) {
+ RETHROW0("Unable to establish a server socket: %s");
+ }
+
+ /* 4. Register the known messages and payloads. */
+ mmrpc_register_messages();
+
+ /* 5. Register my callback */
+ gras_cb_register("request",&server_cb_request_handler);
+
+ /* 6. Wait up to 10 minutes for an incomming message to handle */
+ gras_msg_handle(600.0);
+
+ /* 7. Free the allocated resources, and shut GRAS down */
+ gras_socket_close(sock);
+ gras_exit();
+
+ INFO0("Done.");
+ return 0;
+} /* end_of_server */
+
+
+int client(int argc,char *argv[]) {
+ xbt_ex_t e;
+ gras_socket_t toserver=NULL; /* peer */
+
+ gras_socket_t from;
+ xbt_matrix_t request[2], answer;
+
+ int i,j;
+
+ const char *host = "127.0.0.1";
+ int port = 4000;
+
+ /* 1. Init the GRAS's infrastructure */
+ gras_init(&argc, argv);
+
+ /* 2. Get the server's address. The command line override defaults when specified */
+ if (argc == 3) {
+ host=argv[1];
+ port=atoi(argv[2]);
+ }
+
+ INFO2("Launch client (server on %s:%d)",host,port);
+
+ /* 3. Wait for the server startup */
+ gras_os_sleep(1);
+
+ /* 4. Create a socket to speak to the server */
+ TRY {
+ toserver=gras_socket_client(host,port);
+ } CATCH(e) {
+ RETHROW0("Unable to connect to the server: %s");
+ }
+ INFO2("Connected to %s:%d.",host,port);
+
+
+ /* 5. Register the messages (before use) */
+ mmrpc_register_messages();
+
+ /* 6. Keep the user informed of what's going on */
+ INFO2(">>>>>>>> Connected to server which is on %s:%d <<<<<<<<",
+ gras_socket_peer_name(toserver),gras_socket_peer_port(toserver));
+
+ /* 7. Prepare and send the request to the server */
+
+ request[0] = xbt_matrix_double_new_id(MATSIZE,MATSIZE);
+ request[1] = xbt_matrix_double_new_rand(MATSIZE,MATSIZE);
+
+ /*
+ xbt_matrix_dump(request[0],"C:sent0",0,xbt_matrix_dump_display_double);
+ xbt_matrix_dump(request[1],"C:sent1",0,xbt_matrix_dump_display_double);
+ */
+
+ gras_msg_send(toserver, "request", &request);
+
+ xbt_matrix_free(request[0]);
+
+ INFO2(">>>>>>>> Request sent to %s:%d <<<<<<<<",
+ gras_socket_peer_name(toserver),gras_socket_peer_port(toserver));
+
+ /* 8. Wait for the answer from the server, and deal with issues */
+ gras_msg_wait(6000,"answer",&from,&answer);
+
+ /*
+ xbt_matrix_dump(answer,"C:answer",0,xbt_matrix_dump_display_double);
+ */
+ for (i=0; i<MATSIZE; i++)
+ for (j=0; i<MATSIZE; i++)
+ xbt_assert4(xbt_matrix_get_as(answer,i,j,double)==xbt_matrix_get_as(request[1],i,j,double),
+ "Answer does not match expectations. Found %f at cell %d,%d instead of %f",
+ xbt_matrix_get_as(answer,i,j,double),i,j,
+ xbt_matrix_get_as(request[1],i,j,double));
+
+ /* 9. Keep the user informed of what's going on, again */
+ INFO2(">>>>>>>> Got answer from %s:%d (values are right) <<<<<<<<",
+ gras_socket_peer_name(from),gras_socket_peer_port(from));
+
+ /* 10. Free the allocated resources, and shut GRAS down */
+ xbt_matrix_free(request[1]);
+ xbt_matrix_free(answer);
+ gras_socket_close(toserver);
+ gras_exit();
+ INFO0("Done.");
+ return 0;
+} /* end_of_client */
