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,
21 "SimGrid pseudo-transport");
27 /* retrieve the port record associated to a numerical port on an host */
28 static void find_port(gras_hostdata_t * hd, int port,
29 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,
39 const char *data, unsigned long int size);
40 void gras_trp_sg_chunk_send(gras_socket_t sd,
42 unsigned long int size, int stable_ignored);
44 int gras_trp_sg_chunk_recv(gras_socket_t sd,
45 char *data, 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, 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);
75 void 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->raw_send = gras_trp_sg_chunk_send_raw;
87 plug->send = gras_trp_sg_chunk_send;
88 plug->raw_recv = plug->recv = gras_trp_sg_chunk_recv;
90 plug->flush = NULL; /* nothing cached */
93 void 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 = 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", sock->peer_name);
113 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,
131 if (!pr.meas && sock->meas) {
132 THROW2(mismatch_error, 0,
133 "can't connect to %s:%d in measurement mode, the process listen "
134 "in regular mode on this port", sock->peer_name, sock->peer_port);
136 /* create the socket */
137 data = xbt_new(gras_trp_sg_sock_data_t, 1);
138 data->from_process = SIMIX_process_self();
139 data->to_process = pr.process;
140 data->to_host = peer;
142 /* initialize mutex and condition of the socket */
143 data->mutex = SIMIX_mutex_init();
144 data->cond = SIMIX_cond_init();
145 data->to_socket = pr.socket;
150 DEBUG5("%s (PID %d) connects in %s mode to %s:%d",
151 SIMIX_process_get_name(SIMIX_process_self()), gras_os_getpid(),
152 sock->meas ? "meas" : "regular", sock->peer_name, sock->peer_port);
155 void gras_trp_sg_socket_server(gras_trp_plugin_t self, gras_socket_t sock)
158 gras_hostdata_t *hd =
159 (gras_hostdata_t *) SIMIX_host_get_data(SIMIX_host_self());
160 gras_sg_portrec_t pr;
161 gras_trp_sg_sock_data_t *data;
164 const char *host = SIMIX_host_get_name(SIMIX_host_self());
168 xbt_assert0(hd, "Please run gras_process_init on each process");
170 sock->accepting = 0; /* no such nuisance in SG */
173 find_port(hd, sock->port, &pr);
176 if (e.category == mismatch_error)
183 THROW2(mismatch_error, 0,
184 "can't listen on address %s:%d: port already in use.",
187 pr.port = sock->port;
188 pr.meas = sock->meas;
190 pr.process = SIMIX_process_self();
191 xbt_dynar_push(hd->ports, &pr);
193 /* Create the socket */
194 data = xbt_new(gras_trp_sg_sock_data_t, 1);
195 data->from_process = SIMIX_process_self();
196 data->to_process = NULL;
197 data->to_host = SIMIX_host_self();
199 data->cond = SIMIX_cond_init();
200 data->mutex = SIMIX_mutex_init();
204 VERB6("'%s' (%d) ears on %s:%d%s (%p)",
205 SIMIX_process_get_name(SIMIX_process_self()), gras_os_getpid(),
206 host, sock->port, sock->meas ? " (mode meas)" : "", sock);
210 void gras_trp_sg_socket_close(gras_socket_t sock)
212 gras_hostdata_t *hd =
213 (gras_hostdata_t *) SIMIX_host_get_data(SIMIX_host_self());
215 gras_sg_portrec_t pr;
217 XBT_IN1(" (sock=%p)", sock);
222 xbt_assert0(hd, "Please run gras_process_init on each process");
225 SIMIX_cond_destroy(((gras_trp_sg_sock_data_t *) sock->data)->cond);
226 SIMIX_mutex_destroy(((gras_trp_sg_sock_data_t *) sock->data)->mutex);
230 if (sock->incoming && !sock->outgoing && sock->port >= 0) {
231 /* server mode socket. Unregister it from 'OS' tables */
232 xbt_dynar_foreach(hd->ports, cpt, pr) {
233 DEBUG2("Check pr %d of %lu", cpt, xbt_dynar_length(hd->ports));
234 if (pr.port == sock->port) {
235 xbt_dynar_cursor_rm(hd->ports, &cpt);
240 WARN2("socket_close called on the unknown incoming socket %p (port=%d)",
251 void gras_trp_sg_chunk_send(gras_socket_t sock,
253 unsigned long int size, int stable_ignored)
255 gras_trp_sg_chunk_send_raw(sock, data, size);
258 void gras_trp_sg_chunk_send_raw(gras_socket_t sock,
259 const char *data, unsigned long int size)
262 static unsigned int count = 0;
264 smx_action_t act; /* simix action */
265 gras_trp_sg_sock_data_t *sock_data;
266 gras_trp_procdata_t trp_remote_proc;
267 gras_msg_procdata_t msg_remote_proc;
268 gras_msg_t msg; /* message to send */
270 sock_data = (gras_trp_sg_sock_data_t *) sock->data;
272 xbt_assert0(sock->meas,
273 "SG chunk exchange shouldn't be used on non-measurement sockets");
275 SIMIX_mutex_lock(sock_data->mutex);
276 sprintf(name, "Chunk[%d]", count++);
277 /*initialize gras message */
278 msg = xbt_new(s_gras_msg_t, 1);
280 msg->payl_size = size;
283 msg->payl = (void *) xbt_malloc(size);
284 memcpy(msg->payl, data, size);
290 /* put his socket on the selectable socket queue */
291 trp_remote_proc = (gras_trp_procdata_t)
292 gras_libdata_by_name_from_remote("gras_trp", sock_data->to_process);
293 xbt_queue_push(trp_remote_proc->meas_selectable_sockets, &sock);
295 /* put message on msg_queue */
296 msg_remote_proc = (gras_msg_procdata_t)
297 gras_libdata_by_name_from_remote("gras_msg", sock_data->to_process);
299 xbt_fifo_push(msg_remote_proc->msg_to_receive_queue_meas, msg);
301 /* wait for the receiver */
302 SIMIX_cond_wait(sock_data->cond, sock_data->mutex);
304 /* creates simix action and waits its ends, waits in the sender host
306 DEBUG5("send chunk %s from %s to %s:%d (size=%ld)",
307 name, SIMIX_host_get_name(SIMIX_host_self()),
308 SIMIX_host_get_name(sock_data->to_host), sock->peer_port, size);
310 act = SIMIX_action_communicate(SIMIX_host_self(), sock_data->to_host,
312 SIMIX_register_action_to_condition(act, sock_data->cond);
313 SIMIX_cond_wait(sock_data->cond, sock_data->mutex);
314 SIMIX_unregister_action_to_condition(act, sock_data->cond);
315 /* error treatmeant (FIXME) */
317 /* cleanup structures */
318 SIMIX_action_destroy(act);
320 SIMIX_mutex_unlock(sock_data->mutex);
323 int gras_trp_sg_chunk_recv(gras_socket_t sock,
324 char *data, unsigned long int size)
326 gras_trp_sg_sock_data_t *sock_data;
327 gras_trp_sg_sock_data_t *remote_sock_data;
328 gras_socket_t remote_socket = NULL;
330 gras_msg_procdata_t msg_procdata =
331 (gras_msg_procdata_t) gras_libdata_by_name("gras_msg");
332 gras_trp_procdata_t trp_proc =
333 (gras_trp_procdata_t) gras_libdata_by_id(gras_trp_libdata_id);
335 xbt_assert0(sock->meas,
336 "SG chunk exchange shouldn't be used on non-measurement sockets");
337 xbt_queue_shift_timed(trp_proc->meas_selectable_sockets,
340 if (remote_socket == NULL) {
341 THROW0(timeout_error, 0, "Timeout");
344 remote_sock_data = (gras_trp_sg_sock_data_t *) remote_socket->data;
345 msg_got = xbt_fifo_shift(msg_procdata->msg_to_receive_queue_meas);
347 sock_data = (gras_trp_sg_sock_data_t *) sock->data;
349 /* ok, I'm here, you can continue the communication */
350 SIMIX_cond_signal(remote_sock_data->cond);
352 SIMIX_mutex_lock(remote_sock_data->mutex);
353 /* wait for communication end */
354 SIMIX_cond_wait(remote_sock_data->cond, remote_sock_data->mutex);
356 if (msg_got->payl_size != size)
357 THROW5(mismatch_error, 0,
358 "Got %d bytes when %ld where expected (in %s->%s:%d)",
359 msg_got->payl_size, size,
360 SIMIX_host_get_name(sock_data->to_host),
361 SIMIX_host_get_name(SIMIX_host_self()), sock->peer_port);
364 memcpy(data, msg_got->payl, size);
367 xbt_free(msg_got->payl);
370 SIMIX_mutex_unlock(remote_sock_data->mutex);