1 /* file trp (transport) - send/receive a bunch of bytes in SG realm */
3 /* Note that this is only used to debug other parts of GRAS since message */
4 /* exchange in SG realm is implemented directly without mimicing real life */
5 /* This would be terribly unefficient. */
7 /* Copyright (c) 2004 Martin Quinson. All rights reserved. */
9 /* This program is free software; you can redistribute it and/or modify it
10 * under the terms of the license (GNU LGPL) which comes with this package. */
14 #include "gras/Msg/msg_private.h"
15 #include "gras/Transport/transport_private.h"
16 #include "gras/Virtu/virtu_sg.h"
18 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_trp_sg, gras_trp,
19 "SimGrid pseudo-transport");
25 /* retrieve the port record associated to a numerical port on an host */
26 static void find_port(gras_hostdata_t * hd, int port,
27 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,
37 const char *data, unsigned long int size);
38 void gras_trp_sg_chunk_send(gras_socket_t sd,
40 unsigned long int size, int stable_ignored);
42 int gras_trp_sg_chunk_recv(gras_socket_t sd,
43 char *data, unsigned long int size);
46 *** Specific plugin part
49 int placeholder; /* nothing plugin specific so far */
50 } gras_trp_sg_plug_data_t;
56 static void find_port(gras_hostdata_t * hd, int port, gras_sg_portrec_t * hpd)
61 xbt_assert0(hd, "Please run gras_process_init on each process");
63 xbt_dynar_foreach(hd->ports, cpt, pr) {
64 if (pr.port == port) {
65 memcpy(hpd, &pr, sizeof(gras_sg_portrec_t));
69 THROW1(mismatch_error, 0, "Unable to find any portrec for port #%d", port);
73 void gras_trp_sg_setup(gras_trp_plugin_t plug)
76 gras_trp_sg_plug_data_t *data = xbt_new(gras_trp_sg_plug_data_t, 1);
80 plug->socket_client = gras_trp_sg_socket_client;
81 plug->socket_server = gras_trp_sg_socket_server;
82 plug->socket_close = gras_trp_sg_socket_close;
84 plug->raw_send = gras_trp_sg_chunk_send_raw;
85 plug->send = gras_trp_sg_chunk_send;
86 plug->raw_recv = plug->recv = gras_trp_sg_chunk_recv;
88 plug->flush = NULL; /* nothing cached */
91 void gras_trp_sg_socket_client(gras_trp_plugin_t self,
92 /* OUT */ gras_socket_t sock)
98 gras_trp_sg_sock_data_t *data;
101 /* make sure this socket will reach someone */
102 if (!(peer = SIMIX_host_get_by_name(sock->peer_name)))
103 THROW1(mismatch_error, 0,
104 "Can't connect to %s: no such host.\n", sock->peer_name);
106 if (!(hd = (gras_hostdata_t *) SIMIX_host_get_data(peer)))
107 THROW1(mismatch_error, 0,
108 "can't connect to %s: no process on this host", sock->peer_name);
111 find_port(hd, sock->peer_port, &pr);
114 if (e.category == mismatch_error) {
116 THROW2(mismatch_error, 0,
117 "can't connect to %s:%d, no process listen on this port",
118 sock->peer_name, sock->peer_port);
123 if (pr.meas && !sock->meas) {
124 THROW2(mismatch_error, 0,
125 "can't connect to %s:%d in regular mode, the process listen "
126 "in measurement mode on this port", sock->peer_name,
129 if (!pr.meas && sock->meas) {
130 THROW2(mismatch_error, 0,
131 "can't connect to %s:%d in measurement mode, the process listen "
132 "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_process = SIMIX_process_self();
137 data->to_process = pr.process;
138 data->to_host = peer;
140 /* initialize mutex and condition of the socket */
141 data->mutex = SIMIX_mutex_init();
142 data->cond = SIMIX_cond_init();
143 data->to_socket = pr.socket;
148 DEBUG5("%s (PID %d) connects in %s mode to %s:%d",
149 SIMIX_process_get_name(SIMIX_process_self()), gras_os_getpid(),
150 sock->meas ? "meas" : "regular", sock->peer_name, sock->peer_port);
153 void gras_trp_sg_socket_server(gras_trp_plugin_t self, gras_socket_t sock)
156 gras_hostdata_t *hd =
157 (gras_hostdata_t *) SIMIX_host_get_data(SIMIX_host_self());
158 gras_sg_portrec_t pr;
159 gras_trp_sg_sock_data_t *data;
162 const char *host = SIMIX_host_get_name(SIMIX_host_self());
166 xbt_assert0(hd, "Please run gras_process_init on each process");
168 sock->accepting = 0; /* no such nuisance in SG */
171 find_port(hd, sock->port, &pr);
174 if (e.category == mismatch_error)
181 THROW2(mismatch_error, 0,
182 "can't listen on address %s:%d: port already in use.",
185 pr.port = sock->port;
186 pr.meas = sock->meas;
188 pr.process = SIMIX_process_self();
189 xbt_dynar_push(hd->ports, &pr);
191 /* Create the socket */
192 data = xbt_new(gras_trp_sg_sock_data_t, 1);
193 data->from_process = SIMIX_process_self();
194 data->to_process = NULL;
195 data->to_host = SIMIX_host_self();
197 data->cond = SIMIX_cond_init();
198 data->mutex = SIMIX_mutex_init();
202 VERB6("'%s' (%d) ears on %s:%d%s (%p)",
203 SIMIX_process_get_name(SIMIX_process_self()), gras_os_getpid(),
204 host, sock->port, sock->meas ? " (mode meas)" : "", sock);
208 void gras_trp_sg_socket_close(gras_socket_t sock)
210 gras_hostdata_t *hd =
211 (gras_hostdata_t *) SIMIX_host_get_data(SIMIX_host_self());
213 gras_sg_portrec_t pr;
215 XBT_IN1(" (sock=%p)", sock);
220 xbt_assert0(hd, "Please run gras_process_init on each process");
223 SIMIX_cond_destroy(((gras_trp_sg_sock_data_t *) sock->data)->cond);
224 SIMIX_mutex_destroy(((gras_trp_sg_sock_data_t *) sock->data)->mutex);
228 if (sock->incoming && !sock->outgoing && sock->port >= 0) {
229 /* server mode socket. Unregister it from 'OS' tables */
230 xbt_dynar_foreach(hd->ports, cpt, pr) {
231 DEBUG2("Check pr %d of %lu", cpt, xbt_dynar_length(hd->ports));
232 if (pr.port == sock->port) {
233 xbt_dynar_cursor_rm(hd->ports, &cpt);
238 WARN2("socket_close called on the unknown incoming socket %p (port=%d)",
249 void gras_trp_sg_chunk_send(gras_socket_t sock,
251 unsigned long int size, int stable_ignored)
253 gras_trp_sg_chunk_send_raw(sock, data, size);
256 void gras_trp_sg_chunk_send_raw(gras_socket_t sock,
257 const char *data, unsigned long int size)
260 static unsigned int count = 0;
262 smx_action_t act; /* simix action */
263 gras_trp_sg_sock_data_t *sock_data;
264 gras_trp_procdata_t trp_remote_proc;
265 gras_msg_procdata_t msg_remote_proc;
266 gras_msg_t msg; /* message to send */
268 sock_data = (gras_trp_sg_sock_data_t *) sock->data;
270 xbt_assert0(sock->meas,
271 "SG chunk exchange shouldn't be used on non-measurement sockets");
273 SIMIX_mutex_lock(sock_data->mutex);
274 sprintf(name, "Chunk[%d]", count++);
275 /*initialize gras message */
276 msg = xbt_new(s_gras_msg_t, 1);
278 msg->payl_size = size;
281 msg->payl = (void *) xbt_malloc(size);
282 memcpy(msg->payl, data, size);
288 /* put his socket on the selectable socket queue */
289 trp_remote_proc = (gras_trp_procdata_t)
290 gras_libdata_by_name_from_remote("gras_trp", sock_data->to_process);
291 xbt_queue_push(trp_remote_proc->meas_selectable_sockets, &sock);
293 /* put message on msg_queue */
294 msg_remote_proc = (gras_msg_procdata_t)
295 gras_libdata_by_name_from_remote("gras_msg", sock_data->to_process);
297 xbt_fifo_push(msg_remote_proc->msg_to_receive_queue_meas, msg);
299 /* wait for the receiver */
300 SIMIX_cond_wait(sock_data->cond, sock_data->mutex);
302 /* creates simix action and waits its ends, waits in the sender host
304 DEBUG5("send chunk %s from %s to %s:%d (size=%ld)",
305 name, SIMIX_host_get_name(SIMIX_host_self()),
306 SIMIX_host_get_name(sock_data->to_host), sock->peer_port, size);
308 act = SIMIX_action_communicate(SIMIX_host_self(), sock_data->to_host,
310 SIMIX_register_action_to_condition(act, sock_data->cond);
311 SIMIX_cond_wait(sock_data->cond, sock_data->mutex);
312 SIMIX_unregister_action_to_condition(act, sock_data->cond);
313 /* error treatmeant (FIXME) */
315 /* cleanup structures */
316 SIMIX_action_destroy(act);
318 SIMIX_mutex_unlock(sock_data->mutex);
321 int gras_trp_sg_chunk_recv(gras_socket_t sock,
322 char *data, unsigned long int size)
324 gras_trp_sg_sock_data_t *sock_data;
325 gras_trp_sg_sock_data_t *remote_sock_data;
326 gras_socket_t remote_socket = NULL;
328 gras_msg_procdata_t msg_procdata =
329 (gras_msg_procdata_t) gras_libdata_by_name("gras_msg");
330 gras_trp_procdata_t trp_proc =
331 (gras_trp_procdata_t) gras_libdata_by_id(gras_trp_libdata_id);
333 xbt_assert0(sock->meas,
334 "SG chunk exchange shouldn't be used on non-measurement sockets");
335 xbt_queue_shift_timed(trp_proc->meas_selectable_sockets,
338 if (remote_socket == NULL) {
339 THROW0(timeout_error, 0, "Timeout");
342 remote_sock_data = (gras_trp_sg_sock_data_t *) remote_socket->data;
343 msg_got = xbt_fifo_shift(msg_procdata->msg_to_receive_queue_meas);
345 sock_data = (gras_trp_sg_sock_data_t *) sock->data;
347 /* ok, I'm here, you can continue the communication */
348 SIMIX_cond_signal(remote_sock_data->cond);
350 SIMIX_mutex_lock(remote_sock_data->mutex);
351 /* wait for communication end */
352 SIMIX_cond_wait(remote_sock_data->cond, remote_sock_data->mutex);
354 if (msg_got->payl_size != size)
355 THROW5(mismatch_error, 0,
356 "Got %d bytes when %ld where expected (in %s->%s:%d)",
357 msg_got->payl_size, size,
358 SIMIX_host_get_name(sock_data->to_host),
359 SIMIX_host_get_name(SIMIX_host_self()), sock->peer_port);
362 memcpy(data, msg_got->payl, size);
365 xbt_free(msg_got->payl);
368 SIMIX_mutex_unlock(remote_sock_data->mutex);