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 "gras/Msg/msg_private.h"
17 #include "gras/Transport/transport_private.h"
18 #include "gras/Virtu/virtu_sg.h"
20 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_trp_sg,gras_trp,"SimGrid pseudo-transport");
26 /* retrieve the port record associated to a numerical port on an host */
27 static void find_port(gras_hostdata_t *hd, int port, gras_sg_portrec_t *hpd);
30 void gras_trp_sg_socket_client(gras_trp_plugin_t self,
31 /* OUT */ gras_socket_t sock);
32 void 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 void gras_trp_sg_chunk_send_raw(gras_socket_t sd,
38 unsigned long int size);
39 void gras_trp_sg_chunk_send(gras_socket_t sd,
41 unsigned long int size,
44 int gras_trp_sg_chunk_recv(gras_socket_t sd,
46 unsigned long int size);
49 *** Specific plugin part
52 int placeholder; /* nothing plugin specific so far */
53 } gras_trp_sg_plug_data_t;
59 static void find_port(gras_hostdata_t *hd, int port,
60 gras_sg_portrec_t *hpd) {
64 xbt_assert0(hd,"Please run gras_process_init on each process");
66 xbt_dynar_foreach(hd->ports, cpt, pr) {
67 if (pr.port == port) {
68 memcpy(hpd,&pr,sizeof(gras_sg_portrec_t));
72 THROW1(mismatch_error,0,"Unable to find any portrec for port #%d",port);
77 gras_trp_sg_setup(gras_trp_plugin_t plug) {
79 gras_trp_sg_plug_data_t *data=xbt_new(gras_trp_sg_plug_data_t,1);
83 plug->socket_client = gras_trp_sg_socket_client;
84 plug->socket_server = gras_trp_sg_socket_server;
85 plug->socket_close = gras_trp_sg_socket_close;
87 plug->raw_send = gras_trp_sg_chunk_send_raw;
88 plug->send = gras_trp_sg_chunk_send;
89 plug->raw_recv = plug->recv = gras_trp_sg_chunk_recv;
91 plug->flush = NULL; /* nothing cached */
94 void gras_trp_sg_socket_client(gras_trp_plugin_t self,
95 /* 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=SIMIX_host_get_by_name(sock->peer_name)))
105 THROW1(mismatch_error,0,
106 "Can't connect to %s: no such host.\n",sock->peer_name);
108 if (!(hd=(gras_hostdata_t *)SIMIX_host_get_data(peer)))
109 THROW1(mismatch_error,0,
110 "can't connect to %s: no process on this host",
114 find_port(hd,sock->peer_port,&pr);
116 if (e.category == mismatch_error) {
118 THROW2(mismatch_error,0,
119 "can't connect to %s:%d, no process listen on this port",
120 sock->peer_name,sock->peer_port);
125 if (pr.meas && !sock->meas) {
126 THROW2(mismatch_error,0,
127 "can't connect to %s:%d in regular mode, the process listen "
128 "in measurement mode on this port",sock->peer_name,sock->peer_port);
130 if (!pr.meas && sock->meas) {
131 THROW2(mismatch_error,0,
132 "can't connect to %s:%d in measurement mode, the process listen "
133 "in regular mode on this port",sock->peer_name,sock->peer_port);
135 /* create the socket */
136 data = xbt_new(gras_trp_sg_sock_data_t,1);
137 data->from_process = SIMIX_process_self();
138 data->to_process = pr.process;
139 data->to_host = peer;
141 /* initialize mutex and condition of the socket */
142 data->mutex = SIMIX_mutex_init();
143 data->cond = SIMIX_cond_init();
144 data->to_socket = pr.socket;
149 DEBUG5("%s (PID %d) connects in %s mode to %s:%d",
150 SIMIX_process_get_name(SIMIX_process_self()), gras_os_getpid(),
151 sock->meas?"meas":"regular",
152 sock->peer_name,sock->peer_port);
155 void gras_trp_sg_socket_server(gras_trp_plugin_t self,
158 gras_hostdata_t *hd=(gras_hostdata_t *)SIMIX_host_get_data(SIMIX_host_self());
159 gras_sg_portrec_t pr;
160 gras_trp_sg_sock_data_t *data;
163 const char *host=SIMIX_host_get_name(SIMIX_host_self());
167 xbt_assert0(hd,"Please run gras_process_init on each process");
169 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.port = sock->port;
187 pr.meas = sock->meas;
189 pr.process = SIMIX_process_self();
190 xbt_dynar_push(hd->ports,&pr);
192 /* Create the socket */
193 data = xbt_new(gras_trp_sg_sock_data_t,1);
194 data->from_process = SIMIX_process_self();
195 data->to_process = NULL;
196 data->to_host = SIMIX_host_self();
198 data->cond = SIMIX_cond_init();
199 data->mutex = SIMIX_mutex_init();
203 VERB6("'%s' (%d) ears on %s:%d%s (%p)",
204 SIMIX_process_get_name(SIMIX_process_self()), gras_os_getpid(),
205 host,sock->port,sock->meas? " (mode meas)":"",sock);
209 void gras_trp_sg_socket_close(gras_socket_t sock){
210 gras_hostdata_t *hd=(gras_hostdata_t *)SIMIX_host_get_data(SIMIX_host_self());
212 gras_sg_portrec_t pr;
214 XBT_IN1(" (sock=%p)",sock);
218 xbt_assert0(hd,"Please run gras_process_init on each process");
221 SIMIX_cond_destroy(((gras_trp_sg_sock_data_t*)sock->data)->cond);
222 SIMIX_mutex_destroy(((gras_trp_sg_sock_data_t*)sock->data)->mutex);
226 if (sock->incoming && !sock->outgoing && sock->port >= 0) {
227 /* server mode socket. Unregister it from 'OS' tables */
228 xbt_dynar_foreach(hd->ports, cpt, pr) {
229 DEBUG2("Check pr %d of %lu", cpt, xbt_dynar_length(hd->ports));
230 if (pr.port == sock->port) {
231 xbt_dynar_cursor_rm(hd->ports, &cpt);
236 WARN2("socket_close called on the unknown incoming socket %p (port=%d)",
247 void gras_trp_sg_chunk_send(gras_socket_t sock,
249 unsigned long int size,
250 int stable_ignored) {
251 gras_trp_sg_chunk_send_raw(sock,data,size);
254 void gras_trp_sg_chunk_send_raw(gras_socket_t sock,
256 unsigned long int size) {
258 static unsigned int count=0;
260 smx_action_t act; /* simix action */
261 gras_trp_sg_sock_data_t *sock_data;
262 gras_trp_procdata_t trp_remote_proc;
263 gras_msg_procdata_t msg_remote_proc;
264 gras_msg_t msg; /* message to send */
266 sock_data = (gras_trp_sg_sock_data_t *)sock->data;
268 xbt_assert0(sock->meas,
269 "SG chunk exchange shouldn't be used on non-measurement sockets");
271 SIMIX_mutex_lock(sock_data->mutex);
272 sprintf(name,"Chunk[%d]",count++);
273 /*initialize gras message */
274 msg = xbt_new(s_gras_msg_t,1);
279 msg->payl=(void*)xbt_malloc(size);
280 memcpy(msg->payl,data,size);
286 /* put his socket on the selectable socket queue */
287 trp_remote_proc = (gras_trp_procdata_t)
288 gras_libdata_by_name_from_remote("gras_trp",sock_data->to_process);
289 xbt_queue_push(trp_remote_proc->meas_selectable_sockets,&sock);
291 /* put message on msg_queue */
292 msg_remote_proc = (gras_msg_procdata_t)
293 gras_libdata_by_name_from_remote("gras_msg", sock_data->to_process);
295 xbt_fifo_push(msg_remote_proc->msg_to_receive_queue_meas,msg);
297 /* wait for the receiver */
298 SIMIX_cond_wait(sock_data->cond,sock_data->mutex);
300 /* creates simix action and waits its ends, waits in the sender host
302 DEBUG5("send chunk %s from %s to %s:%d (size=%ld)",
303 name, SIMIX_host_get_name(SIMIX_host_self()),
304 SIMIX_host_get_name(sock_data->to_host), sock->peer_port,size);
306 act = SIMIX_action_communicate(SIMIX_host_self(), sock_data->to_host,
308 SIMIX_register_action_to_condition(act,sock_data->cond);
309 SIMIX_cond_wait(sock_data->cond,sock_data->mutex);
310 SIMIX_unregister_action_to_condition(act,sock_data->cond);
311 /* error treatmeant (FIXME)*/
313 /* cleanup structures */
314 SIMIX_action_destroy(act);
316 SIMIX_mutex_unlock(sock_data->mutex);
319 int gras_trp_sg_chunk_recv(gras_socket_t sock,
321 unsigned long int size){
322 gras_trp_sg_sock_data_t *sock_data;
323 gras_trp_sg_sock_data_t *remote_sock_data;
324 gras_socket_t remote_socket= NULL;
326 gras_msg_procdata_t msg_procdata =
327 (gras_msg_procdata_t)gras_libdata_by_name("gras_msg");
328 gras_trp_procdata_t trp_proc =
329 (gras_trp_procdata_t)gras_libdata_by_id(gras_trp_libdata_id);
331 xbt_assert0(sock->meas,
332 "SG chunk exchange shouldn't be used on non-measurement sockets");
333 xbt_queue_shift_timed(trp_proc->meas_selectable_sockets,
336 if (remote_socket == NULL) {
337 THROW0(timeout_error,0,"Timeout");
340 remote_sock_data = (gras_trp_sg_sock_data_t *)remote_socket->data;
341 msg_got = xbt_fifo_shift(msg_procdata->msg_to_receive_queue_meas);
343 sock_data = (gras_trp_sg_sock_data_t *)sock->data;
345 /* ok, I'm here, you can continue the communication */
346 SIMIX_cond_signal(remote_sock_data->cond);
348 SIMIX_mutex_lock(remote_sock_data->mutex);
349 /* wait for communication end */
350 SIMIX_cond_wait(remote_sock_data->cond,remote_sock_data->mutex);
352 if (msg_got->payl_size != size)
353 THROW5(mismatch_error,0,
354 "Got %d bytes when %ld where expected (in %s->%s:%d)",
355 msg_got->payl_size, size,
356 SIMIX_host_get_name(sock_data->to_host),
357 SIMIX_host_get_name(SIMIX_host_self()), sock->peer_port);
360 memcpy(data,msg_got->payl,size);
363 xbt_free(msg_got->payl);
366 SIMIX_mutex_unlock(remote_sock_data->mutex);