X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/4439d15e7f8a346f40483a8751b7c487d987f463..989ba32a142691acd6c1efb0227a94e516b9b94d:/src/gras/Transport/transport.c

diff --git a/src/gras/Transport/transport.c b/src/gras/Transport/transport.c
index 4745c0aa78..41bed37eb4 100644
--- a/src/gras/Transport/transport.c
+++ b/src/gras/Transport/transport.c
@@ -7,12 +7,18 @@
 /* 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. */
 
+/***
+ *** Options
+ ***/
+int gras_opt_trp_nomoredata_on_close=0;
+
 #include "xbt/ex.h"
+#include "xbt/peer.h"
 #include "portable.h"
 #include "gras/Transport/transport_private.h"
 
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(transport,gras,"Conveying bytes over the network");
-XBT_LOG_NEW_SUBCATEGORY(trp_meas,transport,"Conveying bytes over the network without formating for perf measurements");
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_trp,gras,"Conveying bytes over the network");
+XBT_LOG_NEW_SUBCATEGORY(gras_trp_meas,gras_trp,"Conveying bytes over the network without formating for perf measurements");
 static short int _gras_trp_started = 0;
 
 static xbt_dict_t _gras_trp_plugins;      /* All registered plugins */
@@ -149,7 +155,7 @@ void gras_trp_socket_new(int incoming,
 
   gras_socket_t sock=xbt_new0(s_gras_socket_t,1);
 
-  DEBUG1("Create a new socket (%p)", (void*)sock);
+  VERB1("Create a new socket (%p)", (void*)sock);
 
   sock->plugin = NULL;
 
@@ -157,32 +163,38 @@ void gras_trp_socket_new(int incoming,
   sock->outgoing  = incoming ? 0:1;
   sock->accepting = incoming ? 1:0;
   sock->meas = 0;
+  sock->recv_ok = 1;
+  sock->valid = 1;
+  sock->moredata = 0;
 
   sock->sd     = -1;
   sock->port      = -1;
   sock->peer_port = -1;
   sock->peer_name = NULL;
+  sock->peer_proc = NULL;
 
   sock->data   = NULL;
   sock->bufdata = NULL;
   
   *dst = sock;
 
-  xbt_dynar_push(((gras_trp_procdata_t) gras_libdata_by_id(gras_trp_libdata_id))->sockets,dst);
+  xbt_dynar_push(((gras_trp_procdata_t) 
+		  gras_libdata_by_id(gras_trp_libdata_id))->sockets,dst);
   XBT_OUT;
 }
-
-
+ 
 /**
- * gras_socket_server_ext:
- *
- * Opens a server socket and make it ready to be listened to.
- * In real life, you'll get a TCP socket.
+ * @brief Opens a server socket and makes it ready to be listened to.
+ * @param port: port on which you want to listen
+ * @param buf_size: size of the buffer (in byte) on the socket (for TCP sockets only). If 0, a sain default is used (32k, but may change)
+ * @param measurement: whether this socket is meant to convey measurement (if you don't know, use 0 to exchange regular messages)
+ * 
+ * In real life, you'll get a TCP socket. 
  */
 gras_socket_t
 gras_socket_server_ext(unsigned short port,
 		       
-		       unsigned long int bufSize,
+		       unsigned long int buf_size,
 		       int measurement) {
  
   xbt_ex_t e;
@@ -198,7 +210,7 @@ gras_socket_server_ext(unsigned short port,
   gras_trp_socket_new(1,&sock);
   sock->plugin= trp;
   sock->port=port;
-  sock->bufSize = bufSize;
+  sock->buf_size = buf_size>0 ? buf_size : 32*1024;
   sock->meas = measurement;
 
   /* Call plugin socket creation function */
@@ -210,24 +222,67 @@ gras_socket_server_ext(unsigned short port,
 	   sock->outgoing?'y':'n',
 	   sock->accepting?'y':'n');
   } CATCH(e) {
+    int cursor;
+    gras_socket_t sock_iter;
+    xbt_dynar_t socks = ((gras_trp_procdata_t) gras_libdata_by_id(gras_trp_libdata_id))->sockets;
+    xbt_dynar_foreach(socks, cursor, sock_iter) {
+       if (sock_iter==sock) 
+	 xbt_dynar_cursor_rm(socks,&cursor);
+    }     
     free(sock);
     RETHROW;
   }
 
+  if (!measurement)
+     ((gras_trp_procdata_t) gras_libdata_by_id(gras_trp_libdata_id))->myport = port;
   return sock;
 }
+/**
+ * @brief Opens a server socket on any port in the given range
+ * 
+ * @param minport: first port we will try
+ * @param maxport: last port we will try
+ * @param buf_size: size of the buffer (in byte) on the socket (for TCP sockets only). If 0, a sain default is used (32k, but may change)
+ * @param measurement: whether this socket is meant to convey measurement (if you don't know, use 0 to exchange regular messages)
+ * 
+ * If none of the provided ports works, raises the exception got when trying the last possibility
+ */ 
+gras_socket_t
+gras_socket_server_range(unsigned short minport, unsigned short maxport,
+			 unsigned long int buf_size, int measurement) {
+   
+  int port;
+  gras_socket_t res=NULL;
+  xbt_ex_t e;
+  
+  for (port=minport; port<maxport;port ++) {
+    TRY {
+      res=gras_socket_server_ext(port,buf_size,measurement);
+    } CATCH(e) {
+      if (port==maxport)
+	RETHROW;
+      xbt_ex_free(e);
+    }
+    if (res)
+      return res;
+  }
+  THROW_IMPOSSIBLE;
+}
    
 /**
- * gras_socket_client_ext:
- *
- * Opens a client socket to a remote host.
- * In real life, you'll get a TCP socket.
+ * @brief Opens a client socket to a remote host.
+ * @param host: who you want to connect to
+ * @param port: where you want to connect to on this host
+ * @param buf_size: size of the buffer (in bytes) on the socket (for TCP sockets only). If 0, a sain default is used (32k, but may change)
+ * @param measurement: whether this socket is meant to convey measurement (if you don't know, use 0 to exchange regular messages)
+ * 
+ * In real life, you'll get a TCP socket. 
  */
 gras_socket_t
 gras_socket_client_ext(const char *host,
 		       unsigned short port,
 		       
-		       unsigned long int bufSize,
+		       unsigned long int buf_size,
 		       int measurement) {
  
   xbt_ex_t e;
@@ -242,7 +297,7 @@ gras_socket_client_ext(const char *host,
   sock->plugin= trp;
   sock->peer_port = port;
   sock->peer_name = (char*)strdup(host?host:"localhost");
-  sock->bufSize = bufSize;
+  sock->buf_size = buf_size>0 ? buf_size: 32*1024;
   sock->meas = measurement;
 
   /* plugin-specific */
@@ -268,28 +323,42 @@ gras_socket_client_ext(const char *host,
  */
 gras_socket_t
 gras_socket_server(unsigned short port) {
-   return gras_socket_server_ext(port,32,0);
+   return gras_socket_server_ext(port,32*1024,0);
 }
 
-/**
- * gras_socket_client:
- *
- * Opens a client socket to a remote host.
- * In real life, you'll get a TCP socket.
- */
+/** @brief Opens a client socket to a remote host */
 gras_socket_t
 gras_socket_client(const char *host,
 		   unsigned short port) {
-   return gras_socket_client_ext(host,port,32,0);
+   return gras_socket_client_ext(host,port,0,0);
 }
 
+/** @brief Opens a client socket to a remote host specified as '\a host:\a port' */
+gras_socket_t
+gras_socket_client_from_string(const char *host) {
+   xbt_peer_t p = xbt_peer_from_string(host);
+   gras_socket_t res = gras_socket_client_ext(p->name,p->port,0,0);
+   xbt_peer_free(p);
+   return res;
+}
 
+/** \brief Close socket */
 void gras_socket_close(gras_socket_t sock) {
   xbt_dynar_t sockets = ((gras_trp_procdata_t) gras_libdata_by_id(gras_trp_libdata_id))->sockets;
   gras_socket_t sock_iter;
   int cursor;
 
   XBT_IN;
+  VERB1("Close %p",sock);
+  if (sock == _gras_lastly_selected_socket) {
+     xbt_assert0(!gras_opt_trp_nomoredata_on_close || !sock->moredata,
+		 "Closing a socket having more data in buffer while the nomoredata_on_close option is activated");
+		 
+     if (sock->moredata) 
+       CRITICAL0("Closing a socket having more data in buffer. Option nomoredata_on_close disabled, so continuing.");
+     _gras_lastly_selected_socket=NULL;
+  }
+   
   /* FIXME: Issue an event when the socket is closed */
   if (sock) {
     xbt_dynar_foreach(sockets,cursor,sock_iter) {
@@ -306,7 +375,8 @@ void gras_socket_close(gras_socket_t sock) {
 	return;
       }
     }
-    WARN1("Ignoring request to free an unknown socket (%p)",sock);
+    WARN1("Ignoring request to free an unknown socket (%p). Execution stack:",sock);
+    xbt_backtrace_display();
   }
   XBT_OUT;
 }
@@ -358,6 +428,13 @@ int   gras_socket_peer_port(gras_socket_t sock) {
 char *gras_socket_peer_name(gras_socket_t sock) {
   return sock->peer_name;
 }
+char *gras_socket_peer_proc(gras_socket_t sock) {
+  return sock->peer_proc;
+}
+
+void gras_socket_peer_proc_set(gras_socket_t sock,char*peer_proc) {
+  sock->peer_proc = peer_proc;
+}
 
 /** \brief Check if the provided socket is a measurement one (or a regular one) */
 int gras_socket_is_meas(gras_socket_t sock) {
@@ -382,25 +459,33 @@ void gras_socket_meas_send(gras_socket_t peer,
 			   unsigned int timeout,
 			   unsigned long int exp_size, 
 			   unsigned long int msg_size) {
-  char *chunk = xbt_malloc0(msg_size);
+  char *chunk=NULL;
   unsigned long int exp_sofar;
-   
+  unsigned long int chunk_size = 0;
+  
   XBT_IN;
 
+  if (gras_if_RL()) 
+    chunk=xbt_malloc0(msg_size);
+
   xbt_assert0(peer->meas,"Asked to send measurement data on a regular socket");
-  xbt_assert0(peer->outgoing,"Socket not suited for data send");
+  xbt_assert0(peer->outgoing,"Socket not suited for data send (was created with gras_socket_server(), not gras_socket_client())");
 
-  for (exp_sofar=0; exp_sofar < exp_size; exp_sofar += msg_size) {
-     CDEBUG5(trp_meas,"Sent %lu of %lu (msg_size=%ld) to %s:%d",
+  for (exp_sofar=0; exp_sofar < exp_size; exp_sofar += chunk_size) {
+     chunk_size = exp_sofar + msg_size > exp_size ? 
+       exp_size - exp_sofar : msg_size;
+     CDEBUG6(gras_trp_meas,"Sent %lu of %lu (msg_size=%ld) to %s:%d, sending %lu",
 	     exp_sofar,exp_size,msg_size,
-	     gras_socket_peer_name(peer), gras_socket_peer_port(peer));
-     (*peer->plugin->raw_send)(peer,chunk,msg_size);
+	     gras_socket_peer_name(peer), gras_socket_peer_port(peer), 
+	     chunk_size);
+     (*peer->plugin->raw_send)(peer,chunk,chunk_size);
   }
-  CDEBUG5(trp_meas,"Sent %lu of %lu (msg_size=%ld) to %s:%d",
+  CDEBUG5(gras_trp_meas,"Sent %lu of %lu (msg_size=%ld) to %s:%d",
 	  exp_sofar,exp_size,msg_size,
 	  gras_socket_peer_name(peer), gras_socket_peer_port(peer));
 	     
-  free(chunk);
+  if (gras_if_RL()) 
+    free(chunk);
 
   XBT_OUT;
 }
@@ -415,26 +500,34 @@ void gras_socket_meas_recv(gras_socket_t peer,
 			   unsigned long int exp_size, 
 			   unsigned long int msg_size){
   
-  char *chunk = xbt_malloc(msg_size);
+  char *chunk=NULL;
   unsigned long int exp_sofar;
+  unsigned long int chunk_size = 0;
 
   XBT_IN;
 
+  if (gras_if_RL()) 
+    chunk = xbt_malloc(msg_size);
+
   xbt_assert0(peer->meas,
 	      "Asked to receive measurement data on a regular socket");
   xbt_assert0(peer->incoming,"Socket not suited for data receive");
 
-  for (exp_sofar=0; exp_sofar < exp_size; exp_sofar += msg_size) {
-     CDEBUG5(trp_meas,"Recvd %ld of %lu (msg_size=%ld) from %s:%d",
+  for (exp_sofar=0; exp_sofar < exp_size; exp_sofar += chunk_size) {
+     chunk_size = exp_sofar + msg_size > exp_size ? 
+       exp_size - exp_sofar : msg_size;
+     CDEBUG6(gras_trp_meas,"Recvd %ld of %lu (msg_size=%ld) from %s:%d, receiving %lu",
 	     exp_sofar,exp_size,msg_size,
-	     gras_socket_peer_name(peer), gras_socket_peer_port(peer));
-     (peer->plugin->raw_recv)(peer,chunk,msg_size);
+	     gras_socket_peer_name(peer), gras_socket_peer_port(peer), 
+	     chunk_size);
+     (peer->plugin->raw_recv)(peer,chunk,chunk_size);
   }
-  CDEBUG5(trp_meas,"Recvd %ld of %lu (msg_size=%ld) from %s:%d",
+  CDEBUG5(gras_trp_meas,"Recvd %ld of %lu (msg_size=%ld) from %s:%d",
 	  exp_sofar,exp_size,msg_size,
 	  gras_socket_peer_name(peer), gras_socket_peer_port(peer));
 
-  free(chunk);
+  if (gras_if_RL()) 
+    free(chunk);
   XBT_OUT;
 }
 
@@ -457,13 +550,14 @@ gras_socket_t gras_socket_meas_accept(gras_socket_t peer){
 	      "No need to accept on non-measurement sockets (it's automatic)");
 
   if (!peer->accepting) {
-    /* nothing to accept here */
+    /* nothing to accept here (must be in SG) */
+    /* BUG: FIXME: this is BAD! it makes tricky to free the accepted socket*/
     return peer;
   }
 
   res = (peer->plugin->socket_accept)(peer);
   res->meas = peer->meas;
-  CDEBUG1(trp_meas,"meas_accepted onto %d",res->sd);
+  CDEBUG1(gras_trp_meas,"meas_accepted onto %d",res->sd);
 
   return res;
 } 
@@ -478,6 +572,7 @@ static void *gras_trp_procdata_new() {
    res->name = xbt_strdup("gras_trp");
    res->name_len = 0;
    res->sockets   = xbt_dynar_new(sizeof(gras_socket_t*), NULL);
+   res->myport = 0;
    
    return (void*)res;
 }
@@ -486,10 +581,27 @@ static void *gras_trp_procdata_new() {
  * Freeing procdata for this module
  */
 static void gras_trp_procdata_free(void *data) {
-   gras_trp_procdata_t res = (gras_trp_procdata_t)data;
-   
-   xbt_dynar_free(&( res->sockets ));
-   free(res);
+  gras_trp_procdata_t res = (gras_trp_procdata_t)data;
+  
+  xbt_dynar_free(&( res->sockets ));
+  free(res->name);
+  free(res);
+}
+
+void gras_trp_socketset_dump(const char *name) {
+  gras_trp_procdata_t procdata = 
+    (gras_trp_procdata_t)gras_libdata_by_id(gras_trp_libdata_id);
+
+  int it;
+  gras_socket_t s;
+
+  INFO1("** Dump the socket set %s",name);
+  xbt_dynar_foreach(procdata->sockets, it, s) {
+    INFO4("  %p -> %s:%d %s",
+	  s,gras_socket_peer_name(s),gras_socket_peer_port(s),
+	  s->valid?"(valid)":"(peer dead)");
+  }
+  INFO1("** End of socket set %s",name);
 }
 
 /*
@@ -500,3 +612,7 @@ void gras_trp_register() {
    gras_trp_libdata_id = gras_procdata_add("gras_trp",gras_trp_procdata_new, gras_trp_procdata_free);
 }
 
+int gras_os_myport(void)  {
+   return ((gras_trp_procdata_t) gras_libdata_by_id(gras_trp_libdata_id))->myport;
+}
+