src/gras/Transport/transport_plugin_sg.c

   1 /* $Id$ */
   2
   3 /* file trp (transport) - send/receive a bunch of bytes in SG realm         */
   4
   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.                                     */
   8
   9 /* Copyright (c) 2004 Martin Quinson. All rights reserved.                  */
  10
  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. */
  13
  14 #include "xbt/ex.h"
  15
  16 #include "gras/Msg/msg_private.h"
  17 #include "gras/Transport/transport_private.h"
  18 #include "gras/Virtu/virtu_sg.h"
  19
  20 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_trp_sg,gras_trp,"SimGrid pseudo-transport");
  21
  22 /***
  23  *** Prototypes
  24  ***/
  25
  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);
  28
  29
  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);
  35
  36 void gras_trp_sg_chunk_send_raw(gras_socket_t sd,
  37                                 const char *data,
  38                                 unsigned long int size);
  39 void gras_trp_sg_chunk_send(gras_socket_t sd,
  40                             const char *data,
  41                             unsigned long int size,
  42                             int stable_ignored);
  43
  44 int gras_trp_sg_chunk_recv(gras_socket_t sd,
  45                             char *data,
  46                             unsigned long int size);
  47
  48 /***
  49  *** Specific plugin part
  50  ***/
  51 typedef struct {
  52   int placeholder; /* nothing plugin specific so far */
  53 } gras_trp_sg_plug_data_t;
  54
  55
  56 /***
  57  *** Code
  58  ***/
  59 static void find_port(gras_hostdata_t *hd, int port,
  60                       gras_sg_portrec_t *hpd) {
  61   int cpt;
  62   gras_sg_portrec_t pr;
  63
  64   xbt_assert0(hd,"Please run gras_process_init on each process");
  65
  66   xbt_dynar_foreach(hd->ports, cpt, pr) {
  67     if (pr.port == port) {
  68       memcpy(hpd,&pr,sizeof(gras_sg_portrec_t));
  69       return;
  70     }
  71   }
  72   THROW1(mismatch_error,0,"Unable to find any portrec for port #%d",port);
  73 }
  74
  75
  76 void
  77 gras_trp_sg_setup(gras_trp_plugin_t plug) {
  78
  79   gras_trp_sg_plug_data_t *data=xbt_new(gras_trp_sg_plug_data_t,1);
  80
  81   plug->data      = data;
  82
  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;
  86
  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;
  90
  91   plug->flush         = NULL; /* nothing cached */
  92 }
  93
  94 void gras_trp_sg_socket_client(gras_trp_plugin_t self,
  95                                /* OUT */ gras_socket_t sock){
  96   xbt_ex_t e;
  97
  98   smx_host_t peer;
  99   gras_hostdata_t *hd;
 100   gras_trp_sg_sock_data_t *data;
 101   gras_sg_portrec_t pr;
 102
 103   /* make sure this socket will reach someone */
 104   if (!(peer=SIMIX_host_get_by_name(sock->peer_name)))
 105     THROW1(mismatch_error,0,"Can't connect to %s: no such host.\n",sock->peer_name);
 106
 107   if (!(hd=(gras_hostdata_t *)SIMIX_host_get_data(peer)))
 108     THROW1(mismatch_error,0,
 109            "can't connect to %s: no process on this host",
 110            sock->peer_name);
 111
 112   TRY {
 113     find_port(hd,sock->peer_port,&pr);
 114   } CATCH(e) {
 115     if (e.category == mismatch_error) {
 116       xbt_ex_free(e);
 117       THROW2(mismatch_error,0,
 118              "can't connect to %s:%d, no process listen on this port",
 119              sock->peer_name,sock->peer_port);
 120     }
 121     RETHROW;
 122   }
 123
 124   if (pr.meas && !sock->meas) {
 125     THROW2(mismatch_error,0,
 126            "can't connect to %s:%d in regular mode, the process listen "
 127            "in meas mode on this port",sock->peer_name,sock->peer_port);
 128   }
 129   if (!pr.meas && sock->meas) {
 130     THROW2(mismatch_error,0,
 131            "can't connect to %s:%d in meas mode, the process listen "
 132            "in regular mode on this port",sock->peer_name,sock->peer_port);
 133   }
 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;
 139
 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;
 144
 145   sock->data = data;
 146   sock->incoming = 1;
 147
 148   DEBUG5("%s (PID %ld) connects in %s mode to %s:%d",
 149           SIMIX_process_get_name(SIMIX_process_self()), gras_os_getpid(),
 150           sock->meas?"meas":"regular",
 151          sock->peer_name,sock->peer_port);
 152 }
 153
 154 void gras_trp_sg_socket_server(gras_trp_plugin_t self,
 155                                gras_socket_t sock){
 156
 157   gras_hostdata_t *hd=(gras_hostdata_t *)SIMIX_host_get_data(SIMIX_host_self());
 158   gras_sg_portrec_t pr;
 159   gras_trp_sg_sock_data_t *data;
 160   volatile int found;
 161
 162   const char *host=SIMIX_host_get_name(SIMIX_host_self());
 163
 164   xbt_ex_t e;
 165
 166   xbt_assert0(hd,"Please run gras_process_init on each process");
 167
 168   sock->accepting = 0; /* no such nuisance in SG */
 169   found = 0;
 170   TRY {
 171     find_port(hd,sock->port,&pr);
 172     found = 1;
 173   } CATCH(e) {
 174     if (e.category == mismatch_error)
 175       xbt_ex_free(e);
 176     else
 177       RETHROW;
 178   }
 179
 180   if (found)
 181     THROW2(mismatch_error,0,
 182            "can't listen on address %s:%d: port already in use.",
 183            host,sock->port);
 184
 185   pr.port   = sock->port;
 186   pr.meas    = sock->meas;
 187         pr.socket = sock;
 188         pr.process = SIMIX_process_self();
 189   xbt_dynar_push(hd->ports,&pr);
 190
 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();
 196
 197         data->cond = SIMIX_cond_init();
 198         data->mutex = SIMIX_mutex_init();
 199
 200   sock->data = data;
 201
 202   VERB6("'%s' (%ld) 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);
 205
 206 }
 207
 208 void gras_trp_sg_socket_close(gras_socket_t sock){
 209   gras_hostdata_t *hd=(gras_hostdata_t *)SIMIX_host_get_data(SIMIX_host_self());
 210   int cpt;
 211   gras_sg_portrec_t pr;
 212
 213   XBT_IN1(" (sock=%p)",sock);
 214
 215   if (!sock) return;
 216
 217   xbt_assert0(hd,"Please run gras_process_init on each process");
 218
 219   if (sock->data) {
 220         SIMIX_cond_destroy(((gras_trp_sg_sock_data_t*)sock->data)->cond);
 221                 SIMIX_mutex_destroy(((gras_trp_sg_sock_data_t*)sock->data)->mutex);
 222                 free(sock->data);
 223         }
 224
 225   if (sock->incoming && !sock->outgoing && sock->port >= 0) {
 226     /* server mode socket. Unregister it from 'OS' tables */
 227     xbt_dynar_foreach(hd->ports, cpt, pr) {
 228       DEBUG2("Check pr %d of %lu", cpt, xbt_dynar_length(hd->ports));
 229       if (pr.port == sock->port) {
 230                                 xbt_dynar_cursor_rm(hd->ports, &cpt);
 231                                 XBT_OUT;
 232                                 return;
 233       }
 234     }
 235     WARN2("socket_close called on the unknown incoming socket %p (port=%d)",
 236           sock,sock->port);
 237   }
 238   XBT_OUT;
 239
 240 }
 241
 242 typedef struct {
 243   int size;
 244   void *data;
 245 } sg_task_data_t;
 246
 247 void gras_trp_sg_chunk_send(gras_socket_t sock,
 248                             const char *data,
 249                             unsigned long int size,
 250                             int stable_ignored) {
 251   gras_trp_sg_chunk_send_raw(sock,data,size);
 252 }
 253
 254 void gras_trp_sg_chunk_send_raw(gras_socket_t sock,
 255                                 const char *data,
 256                                 unsigned long int size) {
 257   char name[256];
 258   static unsigned int count=0;
 259
 260         smx_action_t act; /* simix action */
 261         gras_trp_sg_sock_data_t *sock_data;
 262         gras_trp_sg_sock_data_t *remote_sock_data;
 263         gras_hostdata_t *hd;
 264         gras_hostdata_t *remote_hd;
 265         gras_trp_procdata_t trp_remote_proc;
 266         gras_msg_procdata_t msg_remote_proc;
 267         gras_msg_t msg; /* message to send */
 268
 269         sock_data = (gras_trp_sg_sock_data_t *)sock->data;
 270         remote_sock_data = ((gras_trp_sg_sock_data_t *)sock->data)->to_socket->data;
 271         hd = (gras_hostdata_t *)SIMIX_host_get_data(SIMIX_host_self());
 272         remote_hd = (gras_hostdata_t *)SIMIX_host_get_data(sock_data->to_host);
 273
 274   xbt_assert0(sock->meas, "SG chunk exchange shouldn't be used on non-measurement sockets");
 275
 276
 277   sprintf(name,"Chunk[%d]",count++);
 278         /*initialize gras message */
 279         msg = xbt_new(s_gras_msg_t,1);
 280         msg->expe = sock;
 281         msg->payl_size=size;
 282
 283   if (data) {
 284     msg->payl=(void*)xbt_malloc(size);
 285     memcpy(msg->payl,data,size);
 286   } else {
 287     msg->payl = NULL;
 288   }
 289
 290         /* put message on msg_queue */
 291         msg_remote_proc = (gras_msg_procdata_t)gras_libdata_by_name_from_remote("gras_msg",sock_data->to_process);
 292         xbt_fifo_push(msg_remote_proc->msg_to_receive_queue,msg);
 293
 294         /* wake-up the receiver */
 295         trp_remote_proc = (gras_trp_procdata_t)gras_libdata_by_name_from_remote("gras_trp",sock_data->to_process);
 296         SIMIX_cond_signal(trp_remote_proc->cond);
 297
 298         SIMIX_mutex_lock(remote_sock_data->mutex);
 299         //SIMIX_mutex_lock(remote_hd->mutex_port[sock->peer_port]);
 300         /* wait for the receiver */
 301         SIMIX_cond_wait(remote_sock_data->cond,remote_sock_data->mutex);
 302         //SIMIX_cond_wait(remote_hd->cond_port[sock->peer_port], remote_hd->mutex_port[sock->peer_port]);
 303
 304         /* creates simix action and waits its ends, waits in the sender host condition*/
 305   DEBUG5("send chunk %s from %s to  %s:%d (size=%ld)",
 306          name, SIMIX_host_get_name(SIMIX_host_self()),
 307          SIMIX_host_get_name(sock_data->to_host), sock->peer_port,size);
 308
 309         act = SIMIX_action_communicate(SIMIX_host_self(), sock_data->to_host, name, size, -1);
 310         /*
 311         SIMIX_register_action_to_condition(act,remote_hd->cond_port[sock->peer_port]);
 312         SIMIX_register_condition_to_action(act,remote_hd->cond_port[sock->peer_port]);
 313         */
 314         SIMIX_register_action_to_condition(act,remote_sock_data->cond);
 315         SIMIX_register_condition_to_action(act,remote_sock_data->cond);
 316
 317         SIMIX_host_get_name(sock_data->to_host),SIMIX_process_get_name(sock_data->to_process),
 318
 319         SIMIX_cond_wait(remote_sock_data->cond,remote_sock_data->mutex);
 320         //SIMIX_cond_wait(remote_hd->cond_port[sock->peer_port], remote_hd->mutex_port[sock->peer_port]);
 321         /* error treatmeant */
 322
 323         /* cleanup structures */
 324         SIMIX_action_destroy(act);
 325
 326         SIMIX_mutex_unlock(remote_sock_data->mutex);
 327         //SIMIX_mutex_unlock(remote_hd->mutex_port[sock->peer_port]);
 328         SIMIX_cond_signal(remote_sock_data->cond);
 329         //SIMIX_cond_signal(remote_hd->cond_port[sock->peer_port]);
 330 }
 331
 332 int gras_trp_sg_chunk_recv(gras_socket_t sock,
 333                             char *data,
 334                             unsigned long int size){
 335   gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_by_id(gras_trp_libdata_id);
 336         gras_trp_sg_sock_data_t *sock_data;
 337         gras_hostdata_t *remote_hd;
 338         gras_hostdata_t *local_hd;
 339   gras_msg_t msg_got;
 340         gras_msg_procdata_t msg_procdata = (gras_msg_procdata_t)gras_libdata_by_name("gras_msg");
 341
 342   xbt_assert0(sock->meas, "SG chunk exchange shouldn't be used on non-measurement sockets");
 343
 344         SIMIX_mutex_lock(pd->mutex);
 345         if (xbt_fifo_size(msg_procdata->msg_to_receive_queue) == 0 ) {
 346                 SIMIX_cond_wait_timeout(pd->cond,pd->mutex,60);
 347         }
 348         if (xbt_fifo_size(msg_procdata->msg_to_receive_queue) == 0 ) {
 349                 THROW0(timeout_error,0,"Timeout");
 350         }
 351         SIMIX_mutex_unlock(pd->mutex);
 352
 353         sock_data = (gras_trp_sg_sock_data_t *)sock->data;
 354         DEBUG3("Remote host %s, Remote Port: %d Local port %d", SIMIX_host_get_name(sock_data->to_host), sock->peer_port, sock->port);
 355         remote_hd = (gras_hostdata_t *)SIMIX_host_get_data(sock_data->to_host);
 356         local_hd = (gras_hostdata_t *)SIMIX_host_get_data(SIMIX_host_self());
 357
 358
 359
 360   msg_got = xbt_fifo_shift(msg_procdata->msg_to_receive_queue);
 361
 362         SIMIX_mutex_lock(sock_data->mutex);
 363         //SIMIX_mutex_lock(local_hd->mutex_port[sock->port]);
 364 /* ok, I'm here, you can continue the communication */
 365         SIMIX_cond_signal(sock_data->cond);
 366         //SIMIX_cond_signal(local_hd->cond_port[sock->port]);
 367
 368 /* wait for communication end */
 369         SIMIX_cond_wait(sock_data->cond,sock_data->mutex);
 370         //SIMIX_cond_wait(local_hd->cond_port[sock->port],local_hd->mutex_port[sock->port]);
 371
 372
 373   if (msg_got->payl_size != size)
 374     THROW5(mismatch_error,0,
 375            "Got %d bytes when %ld where expected (in %s->%s:%d)",
 376            msg_got->payl_size, size,
 377            SIMIX_host_get_name(sock_data->to_host),
 378            SIMIX_host_get_name(SIMIX_host_self()), sock->peer_port);
 379   if (data) {
 380     memcpy(data,msg_got->payl,size);
 381         }
 382         if (msg_got->payl)
 383                 xbt_free(msg_got->payl);
 384         xbt_free(msg_got);
 385         SIMIX_cond_wait(sock_data->cond,sock_data->mutex);
 386         SIMIX_mutex_unlock(sock_data->mutex);
 387         //SIMIX_mutex_unlock(local_hd->mutex_port[sock->port]);
 388         /*
 389         SIMIX_cond_wait(local_hd->cond_port[sock->port],local_hd->mutex_port[sock->port]);
 390         SIMIX_mutex_unlock(local_hd->mutex_port[sock->port]);
 391         */
 392         return 0;
 393 }
 394