X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/4d16998e72553fe2df2bcb0fc7786a657175baf3..2eafbd98153afc6467f95dbb35f4bdabe909e934:/src/gras/Transport/transport_plugin_sg.c

diff --git a/src/gras/Transport/transport_plugin_sg.c b/src/gras/Transport/transport_plugin_sg.c
index 9b86f53deb..9ebfd79a75 100644
--- a/src/gras/Transport/transport_plugin_sg.c
+++ b/src/gras/Transport/transport_plugin_sg.c
@@ -6,282 +6,367 @@
 /*  exchange in SG realm is implemented directly without mimicing real life */
 /*  This would be terribly unefficient.                                     */
 
-/* Authors: Martin Quinson                                                  */
-/* Copyright (C) 2004 Martin Quinson.                                       */
+/* Copyright (c) 2004 Martin Quinson. All rights reserved.                  */
 
 /* This program is free software; you can redistribute it and/or modify it
-   under the terms of the license (GNU LGPL) which comes with this package. */
+ * under the terms of the license (GNU LGPL) which comes with this package. */
 
-#include <msg.h>
+#include "xbt/ex.h"
 
-#include "gras_private.h"
-#include "transport_private.h"
+#include "gras/Msg/msg_private.h"
+#include "gras/Transport/transport_private.h"
+#include "gras/Virtu/virtu_sg.h"
 
-GRAS_LOG_EXTERNAL_CATEGORY(transport);
-GRAS_LOG_NEW_DEFAULT_SUBCATEGORY(trp_sg,transport);
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_trp_sg, gras_trp,
+                                "SimGrid pseudo-transport");
 
 /***
  *** Prototypes 
  ***/
-gras_error_t gras_trp_sg_socket_client(gras_trp_plugin_t *self,
-				       const char *host,
-				       unsigned short port,
-				       /* OUT */ gras_socket_t *sock);
-gras_error_t gras_trp_sg_socket_server(gras_trp_plugin_t *self,
-				       unsigned short port,
-				       /* OUT */ gras_socket_t *sock);
-void         gras_trp_sg_socket_close(gras_socket_t *sd);
-
-gras_error_t gras_trp_sg_chunk_send(gras_socket_t *sd,
-				    char *data,
-				    size_t size);
-
-gras_error_t gras_trp_sg_chunk_recv(gras_socket_t *sd,
-				    char *data,
-				    size_t size);
-
-/* FIXME
-  gras_error_t gras_trp_sg_flush(gras_socket_t *sd);
-*/
+
+/* retrieve the port record associated to a numerical port on an host */
+static void find_port(gras_hostdata_t * hd, int port,
+                      gras_sg_portrec_t * hpd);
+
+
+void gras_trp_sg_socket_client(gras_trp_plugin_t self,
+                               /* OUT */ gras_socket_t sock);
+void gras_trp_sg_socket_server(gras_trp_plugin_t self,
+                               /* OUT */ gras_socket_t sock);
+void gras_trp_sg_socket_close(gras_socket_t sd);
+
+void gras_trp_sg_chunk_send_raw(gras_socket_t sd,
+                                const char *data, unsigned long int size);
+void gras_trp_sg_chunk_send(gras_socket_t sd,
+                            const char *data,
+                            unsigned long int size, int stable_ignored);
+
+int gras_trp_sg_chunk_recv(gras_socket_t sd,
+                           char *data, unsigned long int size);
 
 /***
  *** Specific plugin part
  ***/
 typedef struct {
-  int placeholder; /* nothing plugin specific so far */
-} gras_trp_sg_plug_specific_t;
+  int placeholder;              /* nothing plugin specific so far */
+} gras_trp_sg_plug_data_t;
+
 
 /***
- *** Specific socket part
+ *** Code
  ***/
-typedef struct {
-  int from_PID;    /* process which sent this message */
-  int to_PID;      /* process to which this message is destinated */
+static void find_port(gras_hostdata_t * hd, int port, gras_sg_portrec_t * hpd)
+{
+  unsigned int cpt;
+  gras_sg_portrec_t pr;
 
-  m_host_t to_host;   /* Who's on other side */
-  m_channel_t to_chan;/* Channel on which the other side is earing */
-} gras_trp_sg_sock_specific_t;
+  xbt_assert0(hd, "Please run gras_process_init on each process");
 
+  xbt_dynar_foreach(hd->ports, cpt, pr) {
+    if (pr.port == port) {
+      memcpy(hpd, &pr, sizeof(gras_sg_portrec_t));
+      return;
+    }
+  }
+  THROW1(mismatch_error, 0, "Unable to find any portrec for port #%d", port);
+}
 
-/***
- *** Code
- ***/
 
-gras_error_t
-gras_trp_sg_setup(gras_trp_plugin_t *plug) {
+void gras_trp_sg_setup(gras_trp_plugin_t plug)
+{
 
-  gras_trp_sg_plug_specific_t *sg=malloc(sizeof(gras_trp_sg_plug_specific_t));
-  if (!sg)
-    RAISE_MALLOC;
+  gras_trp_sg_plug_data_t *data = xbt_new(gras_trp_sg_plug_data_t, 1);
+
+  plug->data = data;
 
   plug->socket_client = gras_trp_sg_socket_client;
   plug->socket_server = gras_trp_sg_socket_server;
-  plug->socket_close  = gras_trp_sg_socket_close;
-
-  plug->chunk_send    = gras_trp_sg_chunk_send;
-  plug->chunk_recv    = gras_trp_sg_chunk_recv;
+  plug->socket_close = gras_trp_sg_socket_close;
 
-  plug->data      = sg; 
+  plug->raw_send = gras_trp_sg_chunk_send_raw;
+  plug->send = gras_trp_sg_chunk_send;
+  plug->raw_recv = plug->recv = gras_trp_sg_chunk_recv;
 
-  return no_error;
+  plug->flush = NULL;           /* nothing cached */
 }
 
-gras_error_t gras_trp_sg_socket_client(gras_trp_plugin_t *self,
-				       const char *host,
-				       unsigned short port,
-				       /* OUT */ gras_socket_t *dst){
+void gras_trp_sg_socket_client(gras_trp_plugin_t self,
+                               /* OUT */ gras_socket_t sock)
+{
+  xbt_ex_t e;
 
-  m_host_t peer;
+  smx_host_t peer;
   gras_hostdata_t *hd;
-  int i;
+  gras_trp_sg_sock_data_t *data;
+  gras_sg_portrec_t pr;
 
   /* make sure this socket will reach someone */
-  if (!(peer=MSG_get_host_by_name(host))) {
-      fprintf(stderr,"GRAS: can't connect to %s: no such host.\n",host);
-      return mismatch_error;
+  if (!(peer = SIMIX_host_get_by_name(sock->peer_name)))
+    THROW1(mismatch_error, 0,
+           "Can't connect to %s: no such host.\n", sock->peer_name);
+
+  if (!(hd = (gras_hostdata_t *) SIMIX_host_get_data(peer)))
+    THROW1(mismatch_error, 0,
+           "can't connect to %s: no process on this host", sock->peer_name);
+
+  TRY {
+    find_port(hd, sock->peer_port, &pr);
   }
-  if (!(hd=(gras_hostdata_t *)MSG_host_get_data(peer))) {
-      fprintf(stderr,"GRAS: can't connect to %s: no process on this host.\n",host);
-      return mismatch_error;
+  CATCH(e) {
+    if (e.category == mismatch_error) {
+      xbt_ex_free(e);
+      THROW2(mismatch_error, 0,
+             "can't connect to %s:%d, no process listen on this port",
+             sock->peer_name, sock->peer_port);
+    }
+    RETHROW;
   }
-  for (i=0; i<hd->portLen && port != hd->port[i]; i++);
-  if (i == hd->portLen) {
-    fprintf(stderr,"GRAS: can't connect to %s:%d, no process listen on this port.\n",host,port);
-    return mismatch_error;
-  } 
-
-  if (hd->raw[i] && !raw) {
-    fprintf(stderr,"GRAS: can't connect to %s:%d in regular mode, the process listen in raw mode on this port.\n",host,port);
-    return mismatch_error;
+
+  if (pr.meas && !sock->meas) {
+    THROW2(mismatch_error, 0,
+           "can't connect to %s:%d in regular mode, the process listen "
+           "in measurement mode on this port", sock->peer_name,
+           sock->peer_port);
   }
-  if (!hd->raw[i] && raw) {
-    fprintf(stderr,"GRAS: can't connect to %s:%d in raw mode, the process listen in regular mode on this port.\n",host,port);
-    return mismatch_error;
+  if (!pr.meas && sock->meas) {
+    THROW2(mismatch_error, 0,
+           "can't connect to %s:%d in measurement mode, the process listen "
+           "in regular mode on this port", sock->peer_name, sock->peer_port);
   }
-    
-
-  /* Create the socket */
-  if (!(*sock=(gras_sock_t*)malloc(sizeof(gras_sock_t)))) {
-      fprintf(stderr,"GRAS: openClientSocket: out of memory\n");
-      return malloc_error;
-  }    
-
-  (*sock)->server_sock  = 0;
-  (*sock)->raw_sock     = raw;
-  (*sock)->from_PID     = MSG_process_self_PID();
-  (*sock)->to_PID       = hd->proc[ hd->port2chan[i] ];
-  (*sock)->to_host      = peer;
-  (*sock)->to_port      = port;  
-  (*sock)->to_chan      = hd->port2chan[i];
-
-  /*
-  fprintf(stderr,"GRAS: %s (PID %d) connects in %s mode to %s:%d (to_PID=%d).\n",
-	  MSG_process_get_name(MSG_process_self()), MSG_process_self_PID(),
-	  raw?"RAW":"regular",host,port,(*sock)->to_PID);
-  */
+  /* create the socket */
+  data = xbt_new(gras_trp_sg_sock_data_t, 1);
+  data->from_process = SIMIX_process_self();
+  data->to_process = pr.process;
+  data->to_host = peer;
+
+  /* initialize mutex and condition of the socket */
+  data->mutex = SIMIX_mutex_init();
+  data->cond = SIMIX_cond_init();
+  data->to_socket = pr.socket;
+
+  sock->data = data;
+  sock->incoming = 1;
+
+  DEBUG5("%s (PID %d) connects in %s mode to %s:%d",
+         SIMIX_process_get_name(SIMIX_process_self()), gras_os_getpid(),
+         sock->meas ? "meas" : "regular", sock->peer_name, sock->peer_port);
 }
 
-gras_error_t gras_trp_sg_socket_server(gras_trp_plugin_t *self,
-				       unsigned short port,
-				       /* OUT */ gras_socket_t *dst){
-
-  gras_hostdata_t *hd=(gras_hostdata_t *)MSG_host_get_data(MSG_host_self());
-  gras_procdata_t *pd=(gras_procdata_t *)MSG_process_get_data(MSG_process_self());
-  int port,i;
-  const char *host=MSG_host_get_name(MSG_host_self());
-
-  gras_assert0(hd,"Please run gras_process_init on each process");
-  gras_assert0(pd,"Please run gras_process_init on each process");
-
-  for (port=startingPort ; port <= endingPort ; port++) {
-    for (i=0; i<hd->portLen && hd->port[i] != port; i++);
-    if (i<hd->portLen && hd->port[i] == port)
-      continue;
-
-    /* port not used so far. Do it */
-    if (i == hd->portLen) {
-      /* need to enlarge the tables */
-      if (hd->portLen++) {
-	hd->port2chan=(int*)realloc(hd->port2chan,hd->portLen*sizeof(int));
-	hd->port     =(int*)realloc(hd->port     ,hd->portLen*sizeof(int));
-	hd->raw      =(int*)realloc(hd->raw      ,hd->portLen*sizeof(int));
-      } else {
-	hd->port2chan=(int*)malloc(hd->portLen*sizeof(int));
-	hd->port     =(int*)malloc(hd->portLen*sizeof(int));
-	hd->raw      =(int*)malloc(hd->portLen*sizeof(int));
-      }
-      if (!hd->port2chan || !hd->port || !hd->raw) {
-	fprintf(stderr,"GRAS: PANIC: A malloc error did lose all ports attribution on this host\n");
-	hd->portLen = 0;
-	return malloc_error;
-      }
-    }
-    hd->port2chan[ i ]=raw ? pd->rawChan : pd->chan;
-    hd->port[ i ]=port;
-    hd->raw[ i ]=raw;
-
-    /* Create the socket */
-    if (!(*sock=(gras_sock_t*)malloc(sizeof(gras_sock_t)))) {
-      fprintf(stderr,"GRAS: openServerSocket: out of memory\n");
-      return malloc_error;
-    }    
-    
-    (*sock)->server_sock  = 1;
-    (*sock)->raw_sock     = raw;
-    (*sock)->from_PID     = -1;
-    (*sock)->to_PID       = MSG_process_self_PID();
-    (*sock)->to_host      = MSG_host_self();
-    (*sock)->to_port      = port;  
-    (*sock)->to_chan      = pd->chan;
-
-    /*
-    fprintf(stderr,"GRAS: '%s' (%d) ears on %s:%d%s (%p).\n",
-	    MSG_process_get_name(MSG_process_self()), MSG_process_self_PID(),
-	    host,port,raw? " (mode RAW)":"",*sock);
-    */
-    return no_error;
+void gras_trp_sg_socket_server(gras_trp_plugin_t self, gras_socket_t sock)
+{
+
+  gras_hostdata_t *hd =
+    (gras_hostdata_t *) SIMIX_host_get_data(SIMIX_host_self());
+  gras_sg_portrec_t pr;
+  gras_trp_sg_sock_data_t *data;
+  volatile int found;
+
+  const char *host = SIMIX_host_get_name(SIMIX_host_self());
+
+  xbt_ex_t e;
+
+  xbt_assert0(hd, "Please run gras_process_init on each process");
+
+  sock->accepting = 0;          /* no such nuisance in SG */
+  found = 0;
+  TRY {
+    find_port(hd, sock->port, &pr);
+    found = 1;
+  } CATCH(e) {
+    if (e.category == mismatch_error)
+      xbt_ex_free(e);
+    else
+      RETHROW;
   }
-  /* if we go out of the previous for loop, that's that we didn't find any
-     suited port number */
 
-  fprintf(stderr,
-	  "GRAS: can't find an empty port between %d and %d to open a socket on host %s\n.",
-	  startingPort,endingPort,host);
-  return mismatch_error;
+  if (found)
+    THROW2(mismatch_error, 0,
+           "can't listen on address %s:%d: port already in use.",
+           host, sock->port);
+
+  pr.port = sock->port;
+  pr.meas = sock->meas;
+  pr.socket = sock;
+  pr.process = SIMIX_process_self();
+  xbt_dynar_push(hd->ports, &pr);
+
+  /* Create the socket */
+  data = xbt_new(gras_trp_sg_sock_data_t, 1);
+  data->from_process = SIMIX_process_self();
+  data->to_process = NULL;
+  data->to_host = SIMIX_host_self();
+
+  data->cond = SIMIX_cond_init();
+  data->mutex = SIMIX_mutex_init();
+
+  sock->data = data;
+
+  VERB6("'%s' (%d) ears on %s:%d%s (%p)",
+        SIMIX_process_get_name(SIMIX_process_self()), gras_os_getpid(),
+        host, sock->port, sock->meas ? " (mode meas)" : "", sock);
+
 }
 
-void gras_trp_sg_socket_close(gras_socket_t *sd){
-  gras_hostdata_t *hd=(gras_hostdata_t *)MSG_host_get_data(MSG_host_self());
-  int i;
+void gras_trp_sg_socket_close(gras_socket_t sock)
+{
+  gras_hostdata_t *hd =
+    (gras_hostdata_t *) SIMIX_host_get_data(SIMIX_host_self());
+  unsigned int cpt;
+  gras_sg_portrec_t pr;
 
-  if (!sd) return;
-  gras_assert0(hd,"Please run gras_process_init on each process");
+  XBT_IN1(" (sock=%p)", sock);
 
-  if (raw && !sd->raw_sock) {
-      fprintf(stderr,"GRAS: gras_rawsock_close: Was passed a regular socket. Please use gras_sock_close()\n");
-  }
-  if (!raw && sd->raw_sock) {
-      fprintf(stderr,"GRAS: grasSockClose: Was passed a raw socket. Please use gras_rawsock_close()\n");
+  if (!sock)
+    return;
+
+  xbt_assert0(hd, "Please run gras_process_init on each process");
+
+  if (sock->data) {
+    SIMIX_cond_destroy(((gras_trp_sg_sock_data_t *) sock->data)->cond);
+    SIMIX_mutex_destroy(((gras_trp_sg_sock_data_t *) sock->data)->mutex);
+    free(sock->data);
   }
-  if (sd->server_sock) {
-    /* server mode socket. Un register it from 'OS' tables */
-    for (i=0; 
-	 i<hd->portLen && sd->to_port != hd->port[i]; 
-	 i++);
-
-    if (i==hd->portLen) {
-      fprintf(stderr,"GRAS: closeSocket: The host does not know this server socket.\n");
-    } else {
-      memmove(&(hd->port[i]),      &(hd->port[i+1]),      (hd->portLen -i -1) * sizeof(int));
-      memmove(&(hd->raw[i]),       &(hd->raw[i+1]),       (hd->portLen -i -1) * sizeof(int));
-      memmove(&(hd->port2chan[i]), &(hd->port2chan[i+1]), (hd->portLen -i -1) * sizeof(int));
-      hd->portLen--;
+
+  if (sock->incoming && !sock->outgoing && sock->port >= 0) {
+    /* server mode socket. Unregister it from 'OS' tables */
+    xbt_dynar_foreach(hd->ports, cpt, pr) {
+      DEBUG2("Check pr %d of %lu", cpt, xbt_dynar_length(hd->ports));
+      if (pr.port == sock->port) {
+        xbt_dynar_cursor_rm(hd->ports, &cpt);
+        XBT_OUT;
+        return;
+      }
     }
-  } 
-  free(sd);
+    WARN2("socket_close called on the unknown incoming socket %p (port=%d)",
+          sock, sock->port);
+  }
+  XBT_OUT;
 }
 
-gras_error_t gras_trp_sg_chunk_send(gras_socket_t *sd,
-				    char *data,
-				    size_t size) {
-  m_task_t task=NULL;
-  static unsigned int count=0;
-  char name[256];
-  
-  sprintf(name,"Chunk[%d]",count++);
-  task=MSG_task_create(name,0,((double)size)/(1024.0*1024.0),NULL);
+typedef struct {
+  int size;
+  void *data;
+} sg_task_data_t;
+
+void gras_trp_sg_chunk_send(gras_socket_t sock,
+                            const char *data,
+                            unsigned long int size, int stable_ignored)
+{
+  gras_trp_sg_chunk_send_raw(sock, data, size);
+}
 
-  if (MSG_task_put(task, sock->to_host,sock->to_chan) != MSG_OK) {
-    RAISE(system_error,"Problem during the MSG_task_put");
+void gras_trp_sg_chunk_send_raw(gras_socket_t sock,
+                                const char *data, unsigned long int size)
+{
+  char name[256];
+  static unsigned int count = 0;
+
+  smx_action_t act;             /* simix action */
+  gras_trp_sg_sock_data_t *sock_data;
+  gras_trp_procdata_t trp_remote_proc;
+  gras_msg_procdata_t msg_remote_proc;
+  gras_msg_t msg;               /* message to send */
+
+  sock_data = (gras_trp_sg_sock_data_t *) sock->data;
+
+  xbt_assert0(sock->meas,
+              "SG chunk exchange shouldn't be used on non-measurement sockets");
+
+  SIMIX_mutex_lock(sock_data->mutex);
+  sprintf(name, "Chunk[%d]", count++);
+  /*initialize gras message */
+  msg = xbt_new(s_gras_msg_t, 1);
+  msg->expe = sock;
+  msg->payl_size = size;
+
+  if (data) {
+    msg->payl = (void *) xbt_malloc(size);
+    memcpy(msg->payl, data, size);
+  } else {
+    msg->payl = NULL;
   }
 
-  return no_error;
-}
 
-gras_error_t gras_trp_sg_chunk_recv(gras_socket_t *sd,
-				    char *data,
-				    size_t size){
-  gras_procdata_t *pd=
-    (gras_procdata_t*)MSG_process_get_data(MSG_process_self());
+  /* put his socket on the selectable socket queue */
+  trp_remote_proc = (gras_trp_procdata_t)
+    gras_libdata_by_name_from_remote("gras_trp", sock_data->to_process);
+  xbt_queue_push(trp_remote_proc->meas_selectable_sockets, &sock);
 
-  unsigned int bytesTotal=0;
-  m_task_t task=NULL;
+  /* put message on msg_queue */
+  msg_remote_proc = (gras_msg_procdata_t)
+    gras_libdata_by_name_from_remote("gras_msg", sock_data->to_process);
 
-  if (MSG_task_get(&task, (m_channel_t) pd->rawChan) != MSG_OK) {
-    fprintf(stderr,"GRAS: Error in MSG_task_get()\n");
-    return unknown_error;
-  }
-  if (MSG_task_destroy(task) != MSG_OK) {
-    fprintf(stderr,"GRAS: Error in MSG_task_destroy()\n");
-    return unknown_error;
-  }
+  xbt_fifo_push(msg_remote_proc->msg_to_receive_queue_meas, msg);
+
+  /* wait for the receiver */
+  SIMIX_cond_wait(sock_data->cond, sock_data->mutex);
 
-  return no_error;
+  /* creates simix action and waits its ends, waits in the sender host
+     condition */
+  DEBUG5("send chunk %s from %s to  %s:%d (size=%ld)",
+         name, SIMIX_host_get_name(SIMIX_host_self()),
+         SIMIX_host_get_name(sock_data->to_host), sock->peer_port, size);
+
+  act = SIMIX_action_communicate(SIMIX_host_self(), sock_data->to_host,
+                                 name, size, -1);
+  SIMIX_register_action_to_condition(act, sock_data->cond);
+  SIMIX_cond_wait(sock_data->cond, sock_data->mutex);
+  SIMIX_unregister_action_to_condition(act, sock_data->cond);
+  /* error treatmeant (FIXME) */
+
+  /* cleanup structures */
+  SIMIX_action_destroy(act);
+
+  SIMIX_mutex_unlock(sock_data->mutex);
 }
 
-/*FIXME
+int gras_trp_sg_chunk_recv(gras_socket_t sock,
+                           char *data, unsigned long int size)
+{
+  gras_trp_sg_sock_data_t *sock_data;
+  gras_trp_sg_sock_data_t *remote_sock_data;
+  gras_socket_t remote_socket = NULL;
+  gras_msg_t msg_got;
+  gras_msg_procdata_t msg_procdata =
+    (gras_msg_procdata_t) gras_libdata_by_name("gras_msg");
+  gras_trp_procdata_t trp_proc =
+    (gras_trp_procdata_t) gras_libdata_by_id(gras_trp_libdata_id);
+
+  xbt_assert0(sock->meas,
+              "SG chunk exchange shouldn't be used on non-measurement sockets");
+  xbt_queue_shift_timed(trp_proc->meas_selectable_sockets,
+                        &remote_socket, 60);
+
+  if (remote_socket == NULL) {
+    THROW0(timeout_error, 0, "Timeout");
+  }
+
+  remote_sock_data = (gras_trp_sg_sock_data_t *) remote_socket->data;
+  msg_got = xbt_fifo_shift(msg_procdata->msg_to_receive_queue_meas);
+
+  sock_data = (gras_trp_sg_sock_data_t *) sock->data;
+
+  /* ok, I'm here, you can continue the communication */
+  SIMIX_cond_signal(remote_sock_data->cond);
+
+  SIMIX_mutex_lock(remote_sock_data->mutex);
+  /* wait for communication end */
+  SIMIX_cond_wait(remote_sock_data->cond, remote_sock_data->mutex);
+
+  if (msg_got->payl_size != size)
+    THROW5(mismatch_error, 0,
+           "Got %d bytes when %ld where expected (in %s->%s:%d)",
+           msg_got->payl_size, size,
+           SIMIX_host_get_name(sock_data->to_host),
+           SIMIX_host_get_name(SIMIX_host_self()), sock->peer_port);
+
+  if (data)
+    memcpy(data, msg_got->payl, size);
+
+  if (msg_got->payl)
+    xbt_free(msg_got->payl);
 
-gras_error_t gras_trp_sg_flush(gras_socket_t *sd){
-  RAISE_UNIMPLEMENTED;
+  xbt_free(msg_got);
+  SIMIX_mutex_unlock(remote_sock_data->mutex);
+  return 0;
 }
-*/