Logo AND Algorithmique Numérique Distribuée

Public GIT Repository
embeed the buffer size within the buffer itself on SG. That way, send are atomic...
[simgrid.git] / src / gras / Transport / transport_plugin_sg.c
index ae0ca84..7b0425d 100644 (file)
@@ -6,40 +6,40 @@
 /*  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 "msg/msg.h"
 
-#include "gras_private.h"
 #include "transport_private.h"
 #include "gras/Virtu/virtu_sg.h"
 
-GRAS_LOG_EXTERNAL_CATEGORY(transport);
-GRAS_LOG_NEW_DEFAULT_SUBCATEGORY(trp_sg,transport,"SimGrid pseudo-transport");
+XBT_LOG_EXTERNAL_CATEGORY(transport);
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(trp_sg,transport,"SimGrid pseudo-transport");
 
 /***
  *** Prototypes 
  ***/
+hexa_print(unsigned char *data, int size);   /* in gras.c */
+
 /* retrieve the port record associated to a numerical port on an host */
-static gras_error_t find_port(gras_hostdata_t *hd, int port,
+static xbt_error_t find_port(gras_hostdata_t *hd, int port,
                              gras_sg_portrec_t *hpd);
 
 
-gras_error_t gras_trp_sg_socket_client(gras_trp_plugin_t *self,
-                                      /* OUT */ gras_socket_t *sock);
-gras_error_t 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);
+xbt_error_t gras_trp_sg_socket_client(gras_trp_plugin_t *self,
+                                      /* OUT */ gras_socket_t sock);
+xbt_error_t 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);
 
-gras_error_t gras_trp_sg_chunk_send(gras_socket_t *sd,
+xbt_error_t gras_trp_sg_chunk_send(gras_socket_t sd,
                                    const char *data,
                                    long int size);
 
-gras_error_t gras_trp_sg_chunk_recv(gras_socket_t *sd,
+xbt_error_t gras_trp_sg_chunk_recv(gras_socket_t sd,
                                    char *data,
                                    long int size);
 
@@ -54,14 +54,14 @@ typedef struct {
 /***
  *** Code
  ***/
-static gras_error_t find_port(gras_hostdata_t *hd, int port,
+static xbt_error_t find_port(gras_hostdata_t *hd, int port,
                              gras_sg_portrec_t *hpd) {
   int cpt;
   gras_sg_portrec_t pr;
 
-  gras_assert0(hd,"Please run gras_process_init on each process");
+  xbt_assert0(hd,"Please run gras_process_init on each process");
   
-  gras_dynar_foreach(hd->ports, cpt, pr) {
+  xbt_dynar_foreach(hd->ports, cpt, pr) {
     if (pr.port == port) {
       memcpy(hpd,&pr,sizeof(gras_sg_portrec_t));
       return no_error;
@@ -71,13 +71,10 @@ static gras_error_t find_port(gras_hostdata_t *hd, int port,
 }
 
 
-gras_error_t
+xbt_error_t
 gras_trp_sg_setup(gras_trp_plugin_t *plug) {
 
-  gras_trp_sg_plug_data_t *data=gras_new(gras_trp_sg_plug_data_t,1);
-
-  if (!data)
-    RAISE_MALLOC;
+  gras_trp_sg_plug_data_t *data=xbt_new(gras_trp_sg_plug_data_t,1);
 
   plug->data      = data; 
 
@@ -93,10 +90,10 @@ gras_trp_sg_setup(gras_trp_plugin_t *plug) {
   return no_error;
 }
 
-gras_error_t gras_trp_sg_socket_client(gras_trp_plugin_t *self,
-                                      /* OUT */ gras_socket_t *sock){
+xbt_error_t gras_trp_sg_socket_client(gras_trp_plugin_t *self,
+                                      /* OUT */ gras_socket_t sock){
 
-  gras_error_t errcode;
+  xbt_error_t errcode;
 
   m_host_t peer;
   gras_hostdata_t *hd;
@@ -135,9 +132,7 @@ gras_error_t gras_trp_sg_socket_client(gras_trp_plugin_t *self,
   }
 
   /* create the socket */
-  if (!(data = gras_new(gras_trp_sg_sock_data_t,1)))
-    RAISE_MALLOC;
-  
+  data = xbt_new(gras_trp_sg_sock_data_t,1);
   data->from_PID     = MSG_process_self_PID();
   data->to_PID       = hd->proc[ pr.tochan ];
   data->to_host      = peer;
@@ -154,19 +149,19 @@ gras_error_t gras_trp_sg_socket_client(gras_trp_plugin_t *self,
   return no_error;
 }
 
-gras_error_t gras_trp_sg_socket_server(gras_trp_plugin_t *self,
-                                      gras_socket_t *sock){
+xbt_error_t gras_trp_sg_socket_server(gras_trp_plugin_t *self,
+                                      gras_socket_t sock){
 
-  gras_error_t errcode;
+  xbt_error_t errcode;
 
   gras_hostdata_t *hd=(gras_hostdata_t *)MSG_host_get_data(MSG_host_self());
-  gras_procdata_t *pd=gras_procdata_get();
+  gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_get("gras_trp");
   gras_sg_portrec_t pr;
   gras_trp_sg_sock_data_t *data;
   
   const char *host=MSG_host_get_name(MSG_host_self());
 
-  gras_assert0(hd,"Please run gras_process_init on each process");
+  xbt_assert0(hd,"Please run gras_process_init on each process");
 
   sock->accepting = 0; /* no such nuisance in SG */
 
@@ -176,21 +171,21 @@ gras_error_t gras_trp_sg_socket_server(gras_trp_plugin_t *self,
     RAISE2(mismatch_error,
           "can't listen on address %s:%d: port already in use\n.",
           host,sock->port);
+    break;
 
   case mismatch_error: /* Port not used so far. Do it */
     pr.tochan = sock->raw ? pd->rawChan : pd->chan;
     pr.port   = sock->port;
     pr.raw    = sock->raw;
-    TRY(gras_dynar_push(hd->ports,&pr));
+    xbt_dynar_push(hd->ports,&pr);
+    break;
     
   default:
     return errcode;
   }
   
   /* Create the socket */
-  if (!(data = gras_new(gras_trp_sg_sock_data_t,1)))
-    RAISE_MALLOC;
-  
+  data = xbt_new(gras_trp_sg_sock_data_t,1);
   data->from_PID     = -1;
   data->to_PID       = MSG_process_self_PID();
   data->to_host      = MSG_host_self();
@@ -198,36 +193,40 @@ gras_error_t gras_trp_sg_socket_server(gras_trp_plugin_t *self,
   
   sock->data = data;
 
-  INFO6("'%s' (%d) ears on %s:%d%s (%p)",
+  VERB6("'%s' (%d) ears on %s:%d%s (%p)",
     MSG_process_get_name(MSG_process_self()), MSG_process_self_PID(),
     host,sock->port,sock->raw? " (mode RAW)":"",sock);
 
   return no_error;
 }
 
-void gras_trp_sg_socket_close(gras_socket_t *sock){
+void gras_trp_sg_socket_close(gras_socket_t sock){
   gras_hostdata_t *hd=(gras_hostdata_t *)MSG_host_get_data(MSG_host_self());
   int cpt;
   
   gras_sg_portrec_t pr;
 
+  XBT_IN1(" (sock=%p)",sock);
+   
   if (!sock) return;
-  gras_assert0(hd,"Please run gras_process_init on each process");
+  xbt_assert0(hd,"Please run gras_process_init on each process");
 
   if (sock->data)
-    gras_free(sock->data);
+    free(sock->data);
 
   if (sock->incoming) {
     /* server mode socket. Un register it from 'OS' tables */
-    gras_dynar_foreach(hd->ports, cpt, pr) {
-      DEBUG2("Check pr %d of %lu", cpt, gras_dynar_length(hd->ports));
+    xbt_dynar_foreach(hd->ports, cpt, pr) {
+      DEBUG2("Check pr %d of %lu", cpt, xbt_dynar_length(hd->ports));
       if (pr.port == sock->port) {
-       gras_dynar_cursor_rm(hd->ports, &cpt);
-       return;
+       xbt_dynar_cursor_rm(hd->ports, &cpt);
+       XBT_OUT;
+        return;
       }
     }
     WARN0("socket_close called on an unknown socket");
   }
+  XBT_OUT;
 }
 
 typedef struct {
@@ -235,7 +234,7 @@ typedef struct {
   void *data;
 } sg_task_data_t;
 
-gras_error_t gras_trp_sg_chunk_send(gras_socket_t *sock,
+xbt_error_t gras_trp_sg_chunk_send(gras_socket_t sock,
                                    const char *data,
                                    long int size) {
   m_task_t task=NULL;
@@ -246,10 +245,8 @@ gras_error_t gras_trp_sg_chunk_send(gras_socket_t *sock,
   
   sprintf(name,"Chunk[%d]",count++);
 
-  if (!(task_data=gras_new(sg_task_data_t,1)))
-    RAISE_MALLOC;
-  if (!(task_data->data=(void*)gras_malloc(size)))
-    RAISE_MALLOC;
+  task_data=xbt_new(sg_task_data_t,1);
+  task_data->data=(void*)xbt_malloc(size);
   task_data->size = size;
   memcpy(task_data->data,data,size);
 
@@ -265,42 +262,54 @@ gras_error_t gras_trp_sg_chunk_send(gras_socket_t *sock,
   return no_error;
 }
 
-gras_error_t gras_trp_sg_chunk_recv(gras_socket_t *sock,
+xbt_error_t gras_trp_sg_chunk_recv(gras_socket_t sock,
                                    char *data,
                                    long int size){
-  gras_procdata_t *pd=gras_procdata_get();
+  gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_get("gras_trp");
 
   m_task_t task=NULL;
   sg_task_data_t *task_data;
   gras_trp_sg_sock_data_t *sock_data = sock->data;
 
-  GRAS_IN;
+  XBT_IN;
   DEBUG4("recv chunk on %s ->  %s:%d (size=%ld)",
         MSG_host_get_name(sock_data->to_host),
         MSG_host_get_name(MSG_host_self()), sock_data->to_chan, size);
   if (MSG_task_get(&task, (sock->raw ? pd->rawChan : pd->chan)) != MSG_OK)
     RAISE0(unknown_error,"Error in MSG_task_get()");
+  DEBUG1("Got chuck %s",MSG_task_get_name(task));
 
   task_data = MSG_task_get_data(task);
-  if (task_data->size != size)
-    RAISE5(mismatch_error,
-          "Got %d bytes when %ld where expected (in %s->%s:%d)",
-          task_data->size, size,
-          MSG_host_get_name(sock_data->to_host),
-          MSG_host_get_name(MSG_host_self()), sock_data->to_chan);
-  memcpy(data,task_data->data,size);
-  gras_free(task_data->data);
-  gras_free(task_data);
+  if (size != -1) {    
+     if (task_data->size != size)
+       RAISE5(mismatch_error,
+             "Got %d bytes when %ld where expected (in %s->%s:%d)",
+             task_data->size, size,
+             MSG_host_get_name(sock_data->to_host),
+             MSG_host_get_name(MSG_host_self()), sock_data->to_chan);
+     memcpy(data,task_data->data,size);
+  } else {
+     /* damn, the size is embeeded at the begining of the chunk */
+     int netsize;
+     
+     memcpy((char*)&netsize,task_data->data,4);
+     netsize = (int)ntohl(netsize);
+     DEBUG1("netsize embeeded = %d",netsize);
+
+     memcpy(data,task_data->data,netsize+4);
+  }
+  free(task_data->data);
+  free(task_data);
 
   if (MSG_task_destroy(task) != MSG_OK)
     RAISE0(unknown_error,"Error in MSG_task_destroy()");
 
-  GRAS_OUT;
+  XBT_OUT;
   return no_error;
 }
 
 /* Data exchange over raw sockets */
-gras_error_t gras_socket_raw_exchange(gras_socket_t *peer,
+xbt_error_t gras_socket_raw_exchange(gras_socket_t peer,
                                      int sender,
                                      unsigned int timeout,
                                      unsigned long int expSize,
@@ -311,7 +320,7 @@ gras_error_t gras_socket_raw_exchange(gras_socket_t *peer,
   char name[256];
   gras_trp_sg_sock_data_t *sock_data = (gras_trp_sg_sock_data_t *)peer->data;
   
-  gras_procdata_t *pd=gras_procdata_get();
+  gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_get("gras_trp");
   double startTime;
   
   startTime=gras_os_time(); /* used only in sender mode */