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 void hexa_print(unsigned char *data, int size); /* in gras.c */
27 /* retrieve the port record associated to a numerical port on an host */
28 static xbt_error_t find_port(gras_hostdata_t *hd, int port,
29 gras_sg_portrec_t *hpd);
32 xbt_error_t gras_trp_sg_socket_client(gras_trp_plugin_t *self,
33 /* OUT */ gras_socket_t sock);
34 xbt_error_t gras_trp_sg_socket_server(gras_trp_plugin_t *self,
35 /* OUT */ gras_socket_t sock);
36 void gras_trp_sg_socket_close(gras_socket_t sd);
38 xbt_error_t gras_trp_sg_chunk_send(gras_socket_t sd,
42 xbt_error_t gras_trp_sg_chunk_recv(gras_socket_t sd,
47 *** Specific plugin part
50 int placeholder; /* nothing plugin specific so far */
51 } gras_trp_sg_plug_data_t;
57 static xbt_error_t find_port(gras_hostdata_t *hd, int port,
58 gras_sg_portrec_t *hpd) {
62 xbt_assert0(hd,"Please run gras_process_init on each process");
64 xbt_dynar_foreach(hd->ports, cpt, pr) {
65 if (pr.port == port) {
66 memcpy(hpd,&pr,sizeof(gras_sg_portrec_t));
70 return mismatch_error;
75 gras_trp_sg_setup(gras_trp_plugin_t *plug) {
77 gras_trp_sg_plug_data_t *data=xbt_new(gras_trp_sg_plug_data_t,1);
81 plug->socket_client = gras_trp_sg_socket_client;
82 plug->socket_server = gras_trp_sg_socket_server;
83 plug->socket_close = gras_trp_sg_socket_close;
85 plug->chunk_send = gras_trp_sg_chunk_send;
86 plug->chunk_recv = gras_trp_sg_chunk_recv;
88 plug->flush = NULL; /* nothing cached */
93 xbt_error_t gras_trp_sg_socket_client(gras_trp_plugin_t *self,
94 /* OUT */ gras_socket_t sock){
100 gras_trp_sg_sock_data_t *data;
101 gras_sg_portrec_t pr;
103 /* make sure this socket will reach someone */
104 if (!(peer=MSG_get_host_by_name(sock->peer_name))) {
105 fprintf(stderr,"GRAS: can't connect to %s: no such host.\n",sock->peer_name);
106 return mismatch_error;
108 if (!(hd=(gras_hostdata_t *)MSG_host_get_data(peer))) {
109 RAISE1(mismatch_error,
110 "can't connect to %s: no process on this host",
113 errcode = find_port(hd,sock->peer_port,&pr);
114 if (errcode != no_error && errcode != mismatch_error)
117 if (errcode == mismatch_error) {
118 RAISE2(mismatch_error,
119 "can't connect to %s:%d, no process listen on this port",
120 sock->peer_name,sock->peer_port);
123 if (pr.meas && !sock->meas) {
124 RAISE2(mismatch_error,
125 "can't connect to %s:%d in regular mode, the process listen "
126 "in meas mode on this port",sock->peer_name,sock->peer_port);
128 if (!pr.meas && sock->meas) {
129 RAISE2(mismatch_error,
130 "can't connect to %s:%d in meas mode, the process listen "
131 "in regular mode on this port",sock->peer_name,sock->peer_port);
134 /* create the socket */
135 data = xbt_new(gras_trp_sg_sock_data_t,1);
136 data->from_PID = MSG_process_self_PID();
137 data->to_PID = hd->proc[ pr.tochan ];
138 data->to_host = peer;
139 data->to_chan = pr.tochan;
144 DEBUG6("%s (PID %d) connects in %s mode to %s:%d (to_PID=%d)",
145 MSG_process_get_name(MSG_process_self()), MSG_process_self_PID(),
146 sock->meas?"meas":"regular",
147 sock->peer_name,sock->peer_port,data->to_PID);
152 xbt_error_t gras_trp_sg_socket_server(gras_trp_plugin_t *self,
157 gras_hostdata_t *hd=(gras_hostdata_t *)MSG_host_get_data(MSG_host_self());
158 gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_get("gras_trp");
159 gras_sg_portrec_t pr;
160 gras_trp_sg_sock_data_t *data;
162 const char *host=MSG_host_get_name(MSG_host_self());
164 xbt_assert0(hd,"Please run gras_process_init on each process");
166 sock->accepting = 0; /* no such nuisance in SG */
168 errcode = find_port(hd,sock->port,&pr);
170 case no_error: /* Port already used... */
171 RAISE2(mismatch_error,
172 "can't listen on address %s:%d: port already in use\n.",
176 case mismatch_error: /* Port not used so far. Do it */
177 pr.tochan = sock->meas ? pd->measChan : pd->chan;
178 pr.port = sock->port;
179 pr.meas = sock->meas;
180 xbt_dynar_push(hd->ports,&pr);
187 /* Create the socket */
188 data = xbt_new(gras_trp_sg_sock_data_t,1);
190 data->to_PID = MSG_process_self_PID();
191 data->to_host = MSG_host_self();
192 data->to_chan = pd->chan;
196 VERB6("'%s' (%d) ears on %s:%d%s (%p)",
197 MSG_process_get_name(MSG_process_self()), MSG_process_self_PID(),
198 host,sock->port,sock->meas? " (mode meas)":"",sock);
203 void gras_trp_sg_socket_close(gras_socket_t sock){
204 gras_hostdata_t *hd=(gras_hostdata_t *)MSG_host_get_data(MSG_host_self());
207 gras_sg_portrec_t pr;
209 XBT_IN1(" (sock=%p)",sock);
212 xbt_assert0(hd,"Please run gras_process_init on each process");
217 if (sock->incoming) {
218 /* server mode socket. Un register it from 'OS' tables */
219 xbt_dynar_foreach(hd->ports, cpt, pr) {
220 DEBUG2("Check pr %d of %lu", cpt, xbt_dynar_length(hd->ports));
221 if (pr.port == sock->port) {
222 xbt_dynar_cursor_rm(hd->ports, &cpt);
227 WARN0("socket_close called on an unknown socket");
237 xbt_error_t gras_trp_sg_chunk_send(gras_socket_t sock,
241 static unsigned int count=0;
243 gras_trp_sg_sock_data_t *sock_data = (gras_trp_sg_sock_data_t *)sock->data;
244 sg_task_data_t *task_data;
246 sprintf(name,"Chunk[%d]",count++);
248 task_data=xbt_new(sg_task_data_t,1);
249 task_data->data=(void*)xbt_malloc(size);
250 task_data->size = size;
251 memcpy(task_data->data,data,size);
253 task=MSG_task_create(name,0,((double)size)/(1024.0*1024.0),task_data);
255 DEBUG5("send chunk %s from %s to %s:%d (size=%ld)",
256 name, MSG_host_get_name(MSG_host_self()),
257 MSG_host_get_name(sock_data->to_host), sock_data->to_chan,size);
258 if (MSG_task_put(task, sock_data->to_host,sock_data->to_chan) != MSG_OK) {
259 RAISE0(system_error,"Problem during the MSG_task_put");
265 xbt_error_t gras_trp_sg_chunk_recv(gras_socket_t sock,
268 gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_get("gras_trp");
271 sg_task_data_t *task_data;
272 gras_trp_sg_sock_data_t *sock_data = sock->data;
275 DEBUG4("recv chunk on %s -> %s:%d (size=%ld)",
276 MSG_host_get_name(sock_data->to_host),
277 MSG_host_get_name(MSG_host_self()), sock_data->to_chan, size);
278 if (MSG_task_get(&task, (sock->meas ? pd->measChan : pd->chan)) != MSG_OK)
279 RAISE0(unknown_error,"Error in MSG_task_get()");
280 DEBUG1("Got chuck %s",MSG_task_get_name(task));
282 task_data = MSG_task_get_data(task);
284 if (task_data->size != size)
285 RAISE5(mismatch_error,
286 "Got %d bytes when %ld where expected (in %s->%s:%d)",
287 task_data->size, size,
288 MSG_host_get_name(sock_data->to_host),
289 MSG_host_get_name(MSG_host_self()), sock_data->to_chan);
290 memcpy(data,task_data->data,size);
292 /* damn, the size is embeeded at the begining of the chunk */
295 memcpy((char*)&netsize,task_data->data,4);
296 DEBUG1("netsize embeeded = %d",netsize);
298 memcpy(data,task_data->data,netsize+4);
300 free(task_data->data);
303 if (MSG_task_destroy(task) != MSG_OK)
304 RAISE0(unknown_error,"Error in MSG_task_destroy()");
311 /* Data exchange over measurement sockets */
312 xbt_error_t gras_socket_meas_exchange(gras_socket_t peer,
314 unsigned int timeout,
315 unsigned long int expSize,
316 unsigned long int msgSize) {
317 unsigned int bytesTotal;
318 static unsigned int count=0;
321 gras_trp_sg_sock_data_t *sock_data = (gras_trp_sg_sock_data_t *)peer->data;
323 gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_get("gras_trp");
326 startTime=gras_os_time(); /* used only in sender mode */
328 for(bytesTotal = 0; bytesTotal < expSize; bytesTotal += msgSize) {
332 sprintf(name,"meas data[%d]",count++);
334 task=MSG_task_create(name,0,((double)msgSize)/(1024.0*1024.0),NULL);
336 DEBUG5("%f:%s: gras_socket_meas_send(%f %s -> %s) BEGIN",
337 gras_os_time(), MSG_process_get_name(MSG_process_self()),
338 ((double)msgSize)/(1024.0*1024.0),
339 MSG_host_get_name( MSG_host_self()), peer->peer_name);
341 if (MSG_task_put(task, sock_data->to_host,sock_data->to_chan) != MSG_OK)
342 RAISE0(system_error,"Problem during the MSG_task_put()");
344 DEBUG5("%f:%s: gras_socket_meas_send(%f %s -> %s) END",
345 gras_os_time(), MSG_process_get_name(MSG_process_self()),
346 ((double)msgSize)/(1024.0*1024.0),
347 MSG_host_get_name( MSG_host_self()), peer->peer_name);
349 } else { /* we are receiver, simulate a select */
352 DEBUG2("%f:%s: gras_socket_meas_recv() BEGIN\n",
353 gras_os_time(), MSG_process_get_name(MSG_process_self()));
355 if (MSG_task_Iprobe((m_channel_t) pd->measChan)) {
356 if (MSG_task_get(&task, (m_channel_t) pd->measChan) != MSG_OK) {
357 fprintf(stderr,"GRAS: Error in MSG_task_get()\n");
358 return unknown_error;
361 if (MSG_task_destroy(task) != MSG_OK) {
362 fprintf(stderr,"GRAS: Error in MSG_task_destroy()\n");
363 return unknown_error;
366 DEBUG2("%f:%s: gras_socket_meas_recv() END\n",
367 gras_os_time(), MSG_process_get_name(MSG_process_self()));
370 MSG_process_sleep(0.0001);
373 } while (gras_os_time() - startTime < timeout);
375 if (gras_os_time() - startTime > timeout)
376 return timeout_error;
377 } /* receiver part */