3 /* file trp (transport) - send/receive a bunch of bytes in SG realm */
5 /* Note that this is only used to debug other parts of GRAS since message */
6 /* exchange in SG realm is implemented directly without mimicing real life */
7 /* This would be terribly unefficient. */
9 /* Copyright (c) 2004 Martin Quinson. All rights reserved. */
11 /* This program is free software; you can redistribute it and/or modify it
12 * under the terms of the license (GNU LGPL) which comes with this package. */
16 #include "transport_private.h"
17 #include "gras/Virtu/virtu_sg.h"
19 XBT_LOG_EXTERNAL_CATEGORY(transport);
20 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(trp_sg,transport,"SimGrid pseudo-transport");
25 /* retrieve the port record associated to a numerical port on an host */
26 static xbt_error_t find_port(gras_hostdata_t *hd, int port,
27 gras_sg_portrec_t *hpd);
30 xbt_error_t gras_trp_sg_socket_client(gras_trp_plugin_t *self,
31 /* OUT */ gras_socket_t sock);
32 xbt_error_t gras_trp_sg_socket_server(gras_trp_plugin_t *self,
33 /* OUT */ gras_socket_t sock);
34 void gras_trp_sg_socket_close(gras_socket_t sd);
36 xbt_error_t gras_trp_sg_chunk_send(gras_socket_t sd,
40 xbt_error_t gras_trp_sg_chunk_recv(gras_socket_t sd,
45 *** Specific plugin part
48 int placeholder; /* nothing plugin specific so far */
49 } gras_trp_sg_plug_data_t;
55 static xbt_error_t find_port(gras_hostdata_t *hd, int port,
56 gras_sg_portrec_t *hpd) {
60 xbt_assert0(hd,"Please run gras_process_init on each process");
62 xbt_dynar_foreach(hd->ports, cpt, pr) {
63 if (pr.port == port) {
64 memcpy(hpd,&pr,sizeof(gras_sg_portrec_t));
68 return mismatch_error;
73 gras_trp_sg_setup(gras_trp_plugin_t *plug) {
75 gras_trp_sg_plug_data_t *data=xbt_new(gras_trp_sg_plug_data_t,1);
79 plug->socket_client = gras_trp_sg_socket_client;
80 plug->socket_server = gras_trp_sg_socket_server;
81 plug->socket_close = gras_trp_sg_socket_close;
83 plug->chunk_send = gras_trp_sg_chunk_send;
84 plug->chunk_recv = gras_trp_sg_chunk_recv;
86 plug->flush = NULL; /* nothing cached */
91 xbt_error_t gras_trp_sg_socket_client(gras_trp_plugin_t *self,
92 /* OUT */ gras_socket_t sock){
98 gras_trp_sg_sock_data_t *data;
101 /* make sure this socket will reach someone */
102 if (!(peer=MSG_get_host_by_name(sock->peer_name))) {
103 fprintf(stderr,"GRAS: can't connect to %s: no such host.\n",sock->peer_name);
104 return mismatch_error;
106 if (!(hd=(gras_hostdata_t *)MSG_host_get_data(peer))) {
107 RAISE1(mismatch_error,
108 "can't connect to %s: no process on this host",
111 errcode = find_port(hd,sock->peer_port,&pr);
112 if (errcode != no_error && errcode != mismatch_error)
115 if (errcode == mismatch_error) {
116 RAISE2(mismatch_error,
117 "can't connect to %s:%d, no process listen on this port",
118 sock->peer_name,sock->peer_port);
121 if (pr.raw && !sock->raw) {
122 RAISE2(mismatch_error,
123 "can't connect to %s:%d in regular mode, the process listen "
124 "in raw mode on this port",sock->peer_name,sock->peer_port);
126 if (!pr.raw && sock->raw) {
127 RAISE2(mismatch_error,
128 "can't connect to %s:%d in raw mode, the process listen "
129 "in regular mode on this port",sock->peer_name,sock->peer_port);
132 /* create the socket */
133 data = xbt_new(gras_trp_sg_sock_data_t,1);
134 data->from_PID = MSG_process_self_PID();
135 data->to_PID = hd->proc[ pr.tochan ];
136 data->to_host = peer;
137 data->to_chan = pr.tochan;
142 DEBUG6("%s (PID %d) connects in %s mode to %s:%d (to_PID=%d)",
143 MSG_process_get_name(MSG_process_self()), MSG_process_self_PID(),
144 sock->raw?"RAW":"regular",
145 sock->peer_name,sock->peer_port,data->to_PID);
150 xbt_error_t gras_trp_sg_socket_server(gras_trp_plugin_t *self,
155 gras_hostdata_t *hd=(gras_hostdata_t *)MSG_host_get_data(MSG_host_self());
156 gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_get("gras_trp");
157 gras_sg_portrec_t pr;
158 gras_trp_sg_sock_data_t *data;
160 const char *host=MSG_host_get_name(MSG_host_self());
162 xbt_assert0(hd,"Please run gras_process_init on each process");
164 sock->accepting = 0; /* no such nuisance in SG */
166 errcode = find_port(hd,sock->port,&pr);
168 case no_error: /* Port already used... */
169 RAISE2(mismatch_error,
170 "can't listen on address %s:%d: port already in use\n.",
174 case mismatch_error: /* Port not used so far. Do it */
175 pr.tochan = sock->raw ? pd->rawChan : pd->chan;
176 pr.port = sock->port;
178 xbt_dynar_push(hd->ports,&pr);
185 /* Create the socket */
186 data = xbt_new(gras_trp_sg_sock_data_t,1);
188 data->to_PID = MSG_process_self_PID();
189 data->to_host = MSG_host_self();
190 data->to_chan = pd->chan;
194 VERB6("'%s' (%d) ears on %s:%d%s (%p)",
195 MSG_process_get_name(MSG_process_self()), MSG_process_self_PID(),
196 host,sock->port,sock->raw? " (mode RAW)":"",sock);
201 void gras_trp_sg_socket_close(gras_socket_t sock){
202 gras_hostdata_t *hd=(gras_hostdata_t *)MSG_host_get_data(MSG_host_self());
205 gras_sg_portrec_t pr;
208 xbt_assert0(hd,"Please run gras_process_init on each process");
213 if (sock->incoming) {
214 /* server mode socket. Un register it from 'OS' tables */
215 xbt_dynar_foreach(hd->ports, cpt, pr) {
216 DEBUG2("Check pr %d of %lu", cpt, xbt_dynar_length(hd->ports));
217 if (pr.port == sock->port) {
218 xbt_dynar_cursor_rm(hd->ports, &cpt);
222 WARN0("socket_close called on an unknown socket");
231 xbt_error_t gras_trp_sg_chunk_send(gras_socket_t sock,
235 static unsigned int count=0;
237 gras_trp_sg_sock_data_t *sock_data = (gras_trp_sg_sock_data_t *)sock->data;
238 sg_task_data_t *task_data;
240 sprintf(name,"Chunk[%d]",count++);
242 task_data=xbt_new(sg_task_data_t,1);
243 task_data->data=(void*)xbt_malloc(size);
244 task_data->size = size;
245 memcpy(task_data->data,data,size);
247 task=MSG_task_create(name,0,((double)size)/(1024.0*1024.0),task_data);
249 DEBUG5("send chunk %s from %s to %s:%d (size=%ld)",
250 name, MSG_host_get_name(MSG_host_self()),
251 MSG_host_get_name(sock_data->to_host), sock_data->to_chan,size);
252 if (MSG_task_put(task, sock_data->to_host,sock_data->to_chan) != MSG_OK) {
253 RAISE0(system_error,"Problem during the MSG_task_put");
259 xbt_error_t gras_trp_sg_chunk_recv(gras_socket_t sock,
262 gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_get("gras_trp");
265 sg_task_data_t *task_data;
266 gras_trp_sg_sock_data_t *sock_data = sock->data;
269 DEBUG4("recv chunk on %s -> %s:%d (size=%ld)",
270 MSG_host_get_name(sock_data->to_host),
271 MSG_host_get_name(MSG_host_self()), sock_data->to_chan, size);
272 if (MSG_task_get(&task, (sock->raw ? pd->rawChan : pd->chan)) != MSG_OK)
273 RAISE0(unknown_error,"Error in MSG_task_get()");
275 task_data = MSG_task_get_data(task);
276 if (task_data->size != size)
277 RAISE5(mismatch_error,
278 "Got %d bytes when %ld where expected (in %s->%s:%d)",
279 task_data->size, size,
280 MSG_host_get_name(sock_data->to_host),
281 MSG_host_get_name(MSG_host_self()), sock_data->to_chan);
282 memcpy(data,task_data->data,size);
283 free(task_data->data);
286 if (MSG_task_destroy(task) != MSG_OK)
287 RAISE0(unknown_error,"Error in MSG_task_destroy()");
293 /* Data exchange over raw sockets */
294 xbt_error_t gras_socket_raw_exchange(gras_socket_t peer,
296 unsigned int timeout,
297 unsigned long int expSize,
298 unsigned long int msgSize) {
299 unsigned int bytesTotal;
300 static unsigned int count=0;
303 gras_trp_sg_sock_data_t *sock_data = (gras_trp_sg_sock_data_t *)peer->data;
305 gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_get("gras_trp");
308 startTime=gras_os_time(); /* used only in sender mode */
310 for(bytesTotal = 0; bytesTotal < expSize; bytesTotal += msgSize) {
314 sprintf(name,"Raw data[%d]",count++);
316 task=MSG_task_create(name,0,((double)msgSize)/(1024.0*1024.0),NULL);
318 DEBUG5("%f:%s: gras_socket_raw_send(%f %s -> %s) BEGIN",
319 gras_os_time(), MSG_process_get_name(MSG_process_self()),
320 ((double)msgSize)/(1024.0*1024.0),
321 MSG_host_get_name( MSG_host_self()), peer->peer_name);
323 if (MSG_task_put(task, sock_data->to_host,sock_data->to_chan) != MSG_OK)
324 RAISE0(system_error,"Problem during the MSG_task_put()");
326 DEBUG5("%f:%s: gras_socket_raw_send(%f %s -> %s) END",
327 gras_os_time(), MSG_process_get_name(MSG_process_self()),
328 ((double)msgSize)/(1024.0*1024.0),
329 MSG_host_get_name( MSG_host_self()), peer->peer_name);
331 } else { /* we are receiver, simulate a select */
334 DEBUG2("%f:%s: gras_socket_raw_recv() BEGIN\n",
335 gras_os_time(), MSG_process_get_name(MSG_process_self()));
337 if (MSG_task_Iprobe((m_channel_t) pd->rawChan)) {
338 if (MSG_task_get(&task, (m_channel_t) pd->rawChan) != MSG_OK) {
339 fprintf(stderr,"GRAS: Error in MSG_task_get()\n");
340 return unknown_error;
343 if (MSG_task_destroy(task) != MSG_OK) {
344 fprintf(stderr,"GRAS: Error in MSG_task_destroy()\n");
345 return unknown_error;
348 DEBUG2("%f:%s: gras_socket_raw_recv() END\n",
349 gras_os_time(), MSG_process_get_name(MSG_process_self()));
352 MSG_process_sleep(0.0001);
355 } while (gras_os_time() - startTime < timeout);
357 if (gras_os_time() - startTime > timeout)
358 return timeout_error;
359 } /* receiver part */