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");
27 void hexa_print(unsigned char *data, int size); /* in gras.c */
29 /* retrieve the port record associated to a numerical port on an host */
30 static void find_port(gras_hostdata_t *hd, int port, gras_sg_portrec_t *hpd);
33 void gras_trp_sg_socket_client(gras_trp_plugin_t self,
34 /* OUT */ gras_socket_t sock);
35 void gras_trp_sg_socket_server(gras_trp_plugin_t self,
36 /* OUT */ gras_socket_t sock);
37 void gras_trp_sg_socket_close(gras_socket_t sd);
39 void gras_trp_sg_chunk_send(gras_socket_t sd,
41 unsigned long int size);
43 void gras_trp_sg_chunk_recv(gras_socket_t sd,
45 unsigned long int size);
48 *** Specific plugin part
51 int placeholder; /* nothing plugin specific so far */
52 } gras_trp_sg_plug_data_t;
58 static void find_port(gras_hostdata_t *hd, int port,
59 gras_sg_portrec_t *hpd) {
63 xbt_assert0(hd,"Please run gras_process_init on each process");
65 xbt_dynar_foreach(hd->ports, cpt, pr) {
66 if (pr.port == port) {
67 memcpy(hpd,&pr,sizeof(gras_sg_portrec_t));
71 THROW1(mismatch_error,0,"Unable to find any portrec for port #%d",port);
76 gras_trp_sg_setup(gras_trp_plugin_t plug) {
78 gras_trp_sg_plug_data_t *data=xbt_new(gras_trp_sg_plug_data_t,1);
82 plug->socket_client = gras_trp_sg_socket_client;
83 plug->socket_server = gras_trp_sg_socket_server;
84 plug->socket_close = gras_trp_sg_socket_close;
86 plug->chunk_send = gras_trp_sg_chunk_send;
87 plug->chunk_recv = gras_trp_sg_chunk_recv;
89 plug->flush = NULL; /* nothing cached */
92 void gras_trp_sg_socket_client(gras_trp_plugin_t self,
93 /* 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 THROW1(mismatch_error,0,"Can't connect to %s: no such host.\n",sock->peer_name);
105 if (!(hd=(gras_hostdata_t *)MSG_host_get_data(peer)))
106 THROW1(mismatch_error,0,
107 "can't connect to %s: no process on this host",
111 find_port(hd,sock->peer_port,&pr);
113 if (e.category == mismatch_error) {
115 THROW2(mismatch_error,0,
116 "can't connect to %s:%d, no process listen on this port",
117 sock->peer_name,sock->peer_port);
122 if (pr.meas && !sock->meas) {
123 THROW2(mismatch_error,0,
124 "can't connect to %s:%d in regular mode, the process listen "
125 "in meas mode on this port",sock->peer_name,sock->peer_port);
127 if (!pr.meas && sock->meas) {
128 THROW2(mismatch_error,0,
129 "can't connect to %s:%d in meas mode, the process listen "
130 "in regular mode on this port",sock->peer_name,sock->peer_port);
133 /* create the socket */
134 data = xbt_new(gras_trp_sg_sock_data_t,1);
135 data->from_PID = MSG_process_self_PID();
136 data->to_PID = hd->proc[ pr.tochan ];
137 data->to_host = peer;
138 data->to_chan = pr.tochan;
143 DEBUG6("%s (PID %d) connects in %s mode to %s:%d (to_PID=%d)",
144 MSG_process_get_name(MSG_process_self()), MSG_process_self_PID(),
145 sock->meas?"meas":"regular",
146 sock->peer_name,sock->peer_port,data->to_PID);
149 void gras_trp_sg_socket_server(gras_trp_plugin_t self,
152 gras_hostdata_t *hd=(gras_hostdata_t *)MSG_host_get_data(MSG_host_self());
153 gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_get("gras_trp");
154 gras_sg_portrec_t pr;
155 gras_trp_sg_sock_data_t *data;
158 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 */
168 find_port(hd,sock->port,&pr);
171 if (e.category == mismatch_error)
178 THROW2(mismatch_error,0,
179 "can't listen on address %s:%d: port already in use.",
182 pr.tochan = sock->meas ? pd->measChan : pd->chan;
183 pr.port = sock->port;
184 pr.meas = sock->meas;
185 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);
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;
207 XBT_IN1(" (sock=%p)",sock);
210 xbt_assert0(hd,"Please run gras_process_init on each process");
215 if (sock->incoming && sock->port >= 0) {
216 /* server mode socket. Unregister it from 'OS' tables */
217 xbt_dynar_foreach(hd->ports, cpt, pr) {
218 DEBUG2("Check pr %d of %lu", cpt, xbt_dynar_length(hd->ports));
219 if (pr.port == sock->port) {
220 xbt_dynar_cursor_rm(hd->ports, &cpt);
225 WARN2("socket_close called on the unknown incoming socket %p (port=%d)",
236 void gras_trp_sg_chunk_send(gras_socket_t sock,
238 unsigned long int size) {
240 static unsigned int count=0;
242 gras_trp_sg_sock_data_t *sock_data = (gras_trp_sg_sock_data_t *)sock->data;
243 sg_task_data_t *task_data;
245 sprintf(name,"Chunk[%d]",count++);
247 task_data=xbt_new(sg_task_data_t,1);
248 task_data->data=(void*)xbt_malloc(size);
249 task_data->size = size;
250 memcpy(task_data->data,data,size);
252 task=MSG_task_create(name,0,((double)size)/(1024.0*1024.0),task_data);
254 DEBUG5("send chunk %s from %s to %s:%d (size=%ld)",
255 name, MSG_host_get_name(MSG_host_self()),
256 MSG_host_get_name(sock_data->to_host), sock_data->to_chan,size);
257 if (MSG_task_put(task, sock_data->to_host,sock_data->to_chan) != MSG_OK) {
258 THROW0(system_error,0,"Problem during the MSG_task_put");
262 void gras_trp_sg_chunk_recv(gras_socket_t sock,
264 unsigned long int size){
265 gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_get("gras_trp");
268 sg_task_data_t *task_data;
269 gras_trp_sg_sock_data_t *sock_data = sock->data;
272 DEBUG4("recv chunk on %s -> %s:%d (size=%ld)",
273 MSG_host_get_name(sock_data->to_host),
274 MSG_host_get_name(MSG_host_self()), sock_data->to_chan, size);
275 if (MSG_task_get(&task, (sock->meas ? pd->measChan : pd->chan)) != MSG_OK)
276 THROW0(system_error,0,"Error in MSG_task_get()");
277 DEBUG1("Got chuck %s",MSG_task_get_name(task));
279 task_data = MSG_task_get_data(task);
281 if (task_data->size != size)
282 THROW5(mismatch_error,0,
283 "Got %d bytes when %ld where expected (in %s->%s:%d)",
284 task_data->size, size,
285 MSG_host_get_name(sock_data->to_host),
286 MSG_host_get_name(MSG_host_self()), sock_data->to_chan);
287 memcpy(data,task_data->data,size);
289 /* damn, the size is embeeded at the begining of the chunk */
292 memcpy((char*)&netsize,task_data->data,4);
293 DEBUG1("netsize embeeded = %d",netsize);
295 memcpy(data,task_data->data,netsize+4);
297 free(task_data->data);
300 if (MSG_task_destroy(task) != MSG_OK)
301 THROW0(system_error,0,"Error in MSG_task_destroy()");