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. */
18 #include "transport_private.h"
19 #include "gras/Virtu/virtu_sg.h"
21 XBT_LOG_EXTERNAL_CATEGORY(transport);
22 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(trp_sg,transport,"SimGrid pseudo-transport");
28 /* retrieve the port record associated to a numerical port on an host */
29 static void find_port(gras_hostdata_t *hd, int port, gras_sg_portrec_t *hpd);
32 void gras_trp_sg_socket_client(gras_trp_plugin_t self,
33 /* OUT */ gras_socket_t sock);
34 void 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 void gras_trp_sg_chunk_send_raw(gras_socket_t sd,
40 unsigned long int size);
41 void gras_trp_sg_chunk_send(gras_socket_t sd,
43 unsigned long int size,
46 int gras_trp_sg_chunk_recv(gras_socket_t sd,
48 unsigned long int size);
51 *** Specific plugin part
54 int placeholder; /* nothing plugin specific so far */
55 } gras_trp_sg_plug_data_t;
61 static void find_port(gras_hostdata_t *hd, int port,
62 gras_sg_portrec_t *hpd) {
66 xbt_assert0(hd,"Please run gras_process_init on each process");
68 xbt_dynar_foreach(hd->ports, cpt, pr) {
69 if (pr.port == port) {
70 memcpy(hpd,&pr,sizeof(gras_sg_portrec_t));
74 THROW1(mismatch_error,0,"Unable to find any portrec for port #%d",port);
79 gras_trp_sg_setup(gras_trp_plugin_t plug) {
81 gras_trp_sg_plug_data_t *data=xbt_new(gras_trp_sg_plug_data_t,1);
85 plug->socket_client = gras_trp_sg_socket_client;
86 plug->socket_server = gras_trp_sg_socket_server;
87 plug->socket_close = gras_trp_sg_socket_close;
89 plug->raw_send = gras_trp_sg_chunk_send_raw;
90 plug->send = gras_trp_sg_chunk_send;
91 plug->raw_recv = plug->recv = gras_trp_sg_chunk_recv;
93 plug->flush = NULL; /* nothing cached */
96 void gras_trp_sg_socket_client(gras_trp_plugin_t self,
97 /* OUT */ gras_socket_t sock){
102 gras_trp_sg_sock_data_t *data;
103 gras_sg_portrec_t pr;
105 /* make sure this socket will reach someone */
106 if (!(peer=MSG_get_host_by_name(sock->peer_name)))
107 THROW1(mismatch_error,0,"Can't connect to %s: no such host.\n",sock->peer_name);
109 if (!(hd=(gras_hostdata_t *)MSG_host_get_data(peer)))
110 THROW1(mismatch_error,0,
111 "can't connect to %s: no process on this host",
115 find_port(hd,sock->peer_port,&pr);
117 if (e.category == mismatch_error) {
119 THROW2(mismatch_error,0,
120 "can't connect to %s:%d, no process listen on this port",
121 sock->peer_name,sock->peer_port);
126 if (pr.meas && !sock->meas) {
127 THROW2(mismatch_error,0,
128 "can't connect to %s:%d in regular mode, the process listen "
129 "in meas mode on this port",sock->peer_name,sock->peer_port);
131 if (!pr.meas && sock->meas) {
132 THROW2(mismatch_error,0,
133 "can't connect to %s:%d in meas mode, the process listen "
134 "in regular mode on this port",sock->peer_name,sock->peer_port);
137 /* create the socket */
138 data = xbt_new(gras_trp_sg_sock_data_t,1);
139 data->from_PID = MSG_process_self_PID();
140 data->to_PID = hd->proc[ pr.tochan ];
141 data->to_host = peer;
142 data->to_chan = pr.tochan;
147 DEBUG6("%s (PID %d) connects in %s mode to %s:%d (to_PID=%d)",
148 MSG_process_get_name(MSG_process_self()), MSG_process_self_PID(),
149 sock->meas?"meas":"regular",
150 sock->peer_name,sock->peer_port,data->to_PID);
153 void gras_trp_sg_socket_server(gras_trp_plugin_t self,
156 gras_hostdata_t *hd=(gras_hostdata_t *)MSG_host_get_data(MSG_host_self());
157 gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_get("gras_trp");
158 gras_sg_portrec_t pr;
159 gras_trp_sg_sock_data_t *data;
162 const char *host=MSG_host_get_name(MSG_host_self());
166 xbt_assert0(hd,"Please run gras_process_init on each process");
168 sock->accepting = 0; /* no such nuisance in SG */
172 find_port(hd,sock->port,&pr);
175 if (e.category == mismatch_error)
182 THROW2(mismatch_error,0,
183 "can't listen on address %s:%d: port already in use.",
186 pr.tochan = sock->meas ? pd->measChan : pd->chan;
187 pr.port = sock->port;
188 pr.meas = sock->meas;
189 xbt_dynar_push(hd->ports,&pr);
191 /* Create the socket */
192 data = xbt_new(gras_trp_sg_sock_data_t,1);
194 data->to_PID = MSG_process_self_PID();
195 data->to_host = MSG_host_self();
196 data->to_chan = pd->chan;
200 VERB6("'%s' (%d) ears on %s:%d%s (%p)",
201 MSG_process_get_name(MSG_process_self()), MSG_process_self_PID(),
202 host,sock->port,sock->meas? " (mode meas)":"",sock);
205 void gras_trp_sg_socket_close(gras_socket_t sock){
206 gras_hostdata_t *hd=(gras_hostdata_t *)MSG_host_get_data(MSG_host_self());
209 gras_sg_portrec_t pr;
211 XBT_IN1(" (sock=%p)",sock);
214 xbt_assert0(hd,"Please run gras_process_init on each process");
219 if (sock->incoming && sock->port >= 0) {
220 /* server mode socket. Unregister it from 'OS' tables */
221 xbt_dynar_foreach(hd->ports, cpt, pr) {
222 DEBUG2("Check pr %d of %lu", cpt, xbt_dynar_length(hd->ports));
223 if (pr.port == sock->port) {
224 xbt_dynar_cursor_rm(hd->ports, &cpt);
229 WARN2("socket_close called on the unknown incoming socket %p (port=%d)",
240 void gras_trp_sg_chunk_send(gras_socket_t sock,
242 unsigned long int size,
243 int stable_ignored) {
244 gras_trp_sg_chunk_send_raw(sock,data,size);
247 void gras_trp_sg_chunk_send_raw(gras_socket_t sock,
249 unsigned long int size) {
251 static unsigned int count=0;
253 gras_trp_sg_sock_data_t *sock_data = (gras_trp_sg_sock_data_t *)sock->data;
254 sg_task_data_t *task_data;
256 xbt_assert0(sock->meas, "SG chunk exchange shouldn't be used on non-measurement sockets");
258 sprintf(name,"Chunk[%d]",count++);
260 task_data=xbt_new(sg_task_data_t,1);
261 task_data->data=(void*)xbt_malloc(size);
262 task_data->size = size;
263 memcpy(task_data->data,data,size);
265 task=MSG_task_create(name,0,((double)size)/(1024.0*1024.0),task_data);
267 DEBUG5("send chunk %s from %s to %s:%d (size=%ld)",
268 name, MSG_host_get_name(MSG_host_self()),
269 MSG_host_get_name(sock_data->to_host), sock_data->to_chan,size);
270 if (MSG_task_put(task, sock_data->to_host,sock_data->to_chan) != MSG_OK) {
271 THROW0(system_error,0,"Problem during the MSG_task_put");
275 int gras_trp_sg_chunk_recv(gras_socket_t sock,
277 unsigned long int size){
278 gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_get("gras_trp");
281 sg_task_data_t *task_data;
282 gras_trp_sg_sock_data_t *sock_data = sock->data;
284 xbt_assert0(sock->meas, "SG chunk exchange shouldn't be used on non-measurement sockets");
286 DEBUG4("recv chunk on %s -> %s:%d (size=%ld)",
287 MSG_host_get_name(sock_data->to_host),
288 MSG_host_get_name(MSG_host_self()), sock_data->to_chan, size);
289 if (MSG_task_get(&task, (sock->meas ? pd->measChan : pd->chan)) != MSG_OK)
290 THROW0(system_error,0,"Error in MSG_task_get()");
291 DEBUG1("Got chuck %s",MSG_task_get_name(task));
293 task_data = MSG_task_get_data(task);
294 if (task_data->size != size)
295 THROW5(mismatch_error,0,
296 "Got %d bytes when %ld where expected (in %s->%s:%d)",
297 task_data->size, size,
298 MSG_host_get_name(sock_data->to_host),
299 MSG_host_get_name(MSG_host_self()), sock_data->to_chan);
300 memcpy(data,task_data->data,size);
301 free(task_data->data);
304 if (MSG_task_destroy(task) != MSG_OK)
305 THROW0(system_error,0,"Error in MSG_task_destroy()");