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Initial structure to implement gras using simix.
[simgrid.git] / src / gras_simix / Transport / gras_simix_transport_plugin_sg.c
diff --git a/src/gras_simix/Transport/gras_simix_transport_plugin_sg.c b/src/gras_simix/Transport/gras_simix_transport_plugin_sg.c
new file mode 100644 (file)
index 0000000..23c384e
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+/* $Id$ */
+
+/* file trp (transport) - send/receive a bunch of bytes in SG realm         */
+
+/* Note that this is only used to debug other parts of GRAS since message   */
+/*  exchange in SG realm is implemented directly without mimicing real life */
+/*  This would be terribly unefficient.                                     */
+
+/* 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. */
+
+#include "xbt/ex.h" 
+
+//#include "msg/msg.h"
+
+#include "gras_simix_transport_private.h"
+#include "gras_simix/Virtu/gras_simix_virtu_sg.h"
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_trp_sg,gras_trp,"SimGrid pseudo-transport");
+
+/***
+ *** Prototypes 
+ ***/
+
+/* 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_data_t;
+
+
+/***
+ *** Code
+ ***/
+static void find_port(gras_hostdata_t *hd, int port,
+                     gras_sg_portrec_t *hpd) {
+  int cpt;
+  gras_sg_portrec_t pr;
+
+  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);
+}
+
+
+void
+gras_trp_sg_setup(gras_trp_plugin_t plug) {
+
+  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->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;
+
+  plug->flush         = NULL; /* nothing cached */
+}
+
+void gras_trp_sg_socket_client(gras_trp_plugin_t self,
+                              /* OUT */ gras_socket_t sock){
+       /*
+  xbt_ex_t e;
+
+  smx_host_t peer;
+  gras_hostdata_t *hd;
+  gras_trp_sg_sock_data_t *data;
+  gras_sg_portrec_t pr;
+*/
+  /* make sure this socket will reach someone */
+  /*if (!(peer=SIMIX_get_host_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);
+  } 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;
+  }
+
+  if (pr.meas && !sock->meas) {
+    THROW2(mismatch_error,0,
+          "can't connect to %s:%d in regular mode, the process listen "
+          "in meas mode on this port",sock->peer_name,sock->peer_port);
+  }
+  if (!pr.meas && sock->meas) {
+    THROW2(mismatch_error,0,
+          "can't connect to %s:%d in meas mode, the process listen "
+          "in regular mode on this port",sock->peer_name,sock->peer_port);
+  }
+*/
+  /* create the socket */
+  /*data = xbt_new(gras_trp_sg_sock_data_t,1);
+  //data->from_PID     = gras_os_getpid();
+  data->from_process = SIMIX_process_self();
+       data->to_process         = pr.process;
+       //data->to_PID       = hd->proc[ pr.tochan ];
+       data->to_port                    = pr;
+  data->to_host      = peer;
+  //data->to_chan      = pr.tochan;
+
+  sock->data = data;
+  sock->incoming = 1;
+
+  DEBUG6("%s (PID %d) connects in %s mode to %s:%d (to_PID=%d)",
+         SIMIX_process_get_name(SIMIX_process_self()), gras_os_getpid,
+         sock->meas?"meas":"regular",
+        sock->peer_name,sock->peer_port,data->to_PID);
+*/
+}
+
+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_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_by_id(gras_trp_libdata_id);
+  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 (found) 
+    THROW2(mismatch_error,0,
+          "can't listen on address %s:%d: port already in use.",
+          host,sock->port);
+
+  //pr.tochan = sock->meas ? pd->measChan : pd->chan;
+  pr.port   = sock->port;
+  pr.meas    = sock->meas;
+       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     = NULL;
+  data->to_PID       = SIMIX_process_self();;
+  //data->to_process       = gras_os_getpid();
+  data->to_host      = SIMIX_host_self();
+       data->to_port            = pr;
+  //data->to_chan      = pd->chan;
+  
+  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 sock){
+/*
+  gras_hostdata_t *hd=(gras_hostdata_t *)SIMIX_host_get_data(SIMIX_host_self());
+  int cpt;
+  
+  gras_sg_portrec_t pr;
+
+  XBT_IN1(" (sock=%p)",sock);
+   
+  if (!sock) return;
+  xbt_assert0(hd,"Please run gras_process_init on each process");
+
+  if (sock->data)
+    free(sock->data);
+
+  if (sock->incoming && 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;
+      }
+    }
+    WARN2("socket_close called on the unknown incoming socket %p (port=%d)",
+         sock,sock->port);
+  }
+  XBT_OUT;
+*/
+}
+
+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);
+}
+
+void gras_trp_sg_chunk_send_raw(gras_socket_t sock,
+                               const char *data,
+                               unsigned long int size) {
+                               /*
+  m_task_t task=NULL;
+  static unsigned int count=0;
+  char name[256];
+  gras_trp_sg_sock_data_t *sock_data = (gras_trp_sg_sock_data_t *)sock->data;
+  sg_task_data_t *task_data;
+  
+  xbt_assert0(sock->meas, "SG chunk exchange shouldn't be used on non-measurement sockets");
+
+  sprintf(name,"Chunk[%d]",count++);
+
+  task_data=xbt_new(sg_task_data_t,1);
+  task_data->size = size;
+  if (data) {
+    task_data->data=(void*)xbt_malloc(size);
+    memcpy(task_data->data,data,size);
+  } else {
+    task_data->data = NULL;
+  }
+
+  task=MSG_task_create(name,0,((double)size),task_data);
+
+  DEBUG5("send chunk %s from %s to  %s:%d (size=%ld)",
+        name, MSG_host_get_name(MSG_host_self()),
+        MSG_host_get_name(sock_data->to_host), sock_data->to_chan,size);
+  if (MSG_task_put_with_timeout(task, sock_data->to_host,sock_data->to_chan,60.0) != MSG_OK) {
+    THROW0(system_error,0,"Problem during the MSG_task_put with timeout 60");
+  }*/
+}
+
+int gras_trp_sg_chunk_recv(gras_socket_t sock,
+                           char *data,
+                           unsigned long int size){
+                                       /*
+  gras_trp_procdata_t pd=(gras_trp_procdata_t)gras_libdata_by_id(gras_trp_libdata_id);
+
+  m_task_t task=NULL;
+  sg_task_data_t *task_data;
+  gras_trp_sg_sock_data_t *sock_data = sock->data;
+
+  xbt_assert0(sock->meas, "SG chunk exchange shouldn't be used on non-measurement sockets");
+  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_with_time_out(&task, 
+                                (sock->meas ? pd->measChan : pd->chan),
+                                60) != MSG_OK)
+    THROW0(system_error,0,"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)
+    THROW5(mismatch_error,0,
+          "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);
+  if (data) 
+    memcpy(data,task_data->data,size);
+  if (task_data->data)
+    free(task_data->data);
+  free(task_data);
+
+  if (MSG_task_destroy(task) != MSG_OK)
+    THROW0(system_error,0,"Error in MSG_task_destroy()");
+
+  XBT_OUT;
+  return size;*/
+       return 0;
+}
+