X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/782ce0488c03c8b13b2267d198a70d6667176f83..3203ed1f4fb6f4617e94d5351661ba07e8b8f833:/examples/msg/io/file.c

diff --git a/examples/msg/io/file.c b/examples/msg/io/file.c
index c52c2fd905..cb5df5501d 100644
--- a/examples/msg/io/file.c
+++ b/examples/msg/io/file.c
@@ -1,13 +1,28 @@
-/* Copyright (c) 2008, 2009, 2010. The SimGrid Team.
+/* Copyright (c) 2008-2010, 2012-2015. The SimGrid Team.
  * 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. */
 
+/** @addtogroup MSG_examples
+ * 
+ * @subsection MSG_ex_resources Other resource kinds
+ * 
+ * This section contains some sparse examples of how to use the other
+ * kind of resources, such as disk or GPU. These resources are quite
+ * experimental for now, but here we go anyway.
+ * 
+ * - <b>io/file.c</b> Example with the disk resource
+ */
+
+#define FILENAME1 "/home/doc/simgrid/examples/platforms/g5k.xml"
+#define FILENAME2 "c:\\Windows\\setupact.log"
+#define FILENAME3 "/home/doc/simgrid/examples/platforms/g5k_cabinets.xml"
+#define FILENAME4 "/home/doc/simgrid/examples/platforms/nancy.xml"
+
 #include <stdio.h>
 #include <stdlib.h>
-#include "msg/msg.h"
-#include "surf/surf_private.h"
+#include "simgrid/msg.h"
 
 int host(int argc, char *argv[]);
 
@@ -16,45 +31,96 @@ XBT_LOG_NEW_DEFAULT_CATEGORY(io_file,
 
 int host(int argc, char *argv[])
 {
-  m_file_t* file;
-  file = MSG_file_open("test.txt","rw");
-  XBT_INFO("Host '%s' open %p",MSG_host_get_name(MSG_host_self()), file);
+  msg_file_t file = NULL;
+  sg_size_t read,write;
+  msg_storage_t st;
+  const char* st_name;
+
+  if(!strcmp(MSG_process_get_name(MSG_process_self()),"0")){
+    file = MSG_file_open(FILENAME1, NULL);
+    MSG_file_dump(file);
+    st_name = "Disk4";
+  } else if(!strcmp(MSG_process_get_name(MSG_process_self()),"1")) {
+    file = MSG_file_open(FILENAME2, NULL);
+    st_name = "Disk2";
+  } else if(!strcmp(MSG_process_get_name(MSG_process_self()),"2")){
+    file = MSG_file_open(FILENAME3, NULL);
+    st_name = "Disk3";
+  } else if(!strcmp(MSG_process_get_name(MSG_process_self()),"3")){
+    file = MSG_file_open(FILENAME4, NULL);
+    st_name = "Disk1";
+  }
+  else xbt_die("FILENAME NOT DEFINED %s",MSG_process_get_name(MSG_process_self()));
+
+  const char* filename = MSG_file_get_name(file);
+  XBT_INFO("\tOpen file '%s'",filename);
+  st = MSG_storage_get_by_name(st_name);
+
+  XBT_INFO("\tCapacity of the storage element '%s' is stored on: %llu / %llu",
+            filename, MSG_storage_get_used_size(st), MSG_storage_get_size(st));
+
+  /* Try to read for 10MB */
+  read = MSG_file_read(file, 10000000);
+  XBT_INFO("\tHave read %llu from '%s'",read,filename);
+
+  /* Write 100KB in file from the current position, i.e, end of file or 10MB */
+  write = MSG_file_write(file, 100000);
+  XBT_INFO("\tHave written %llu in '%s'. Size now is: %llu",write,filename,
+           MSG_file_get_size(file));
 
-  size_t read = MSG_file_read(NULL,0,0,file);
-  XBT_INFO("Host '%s' read %ld",MSG_host_get_name(MSG_host_self()),read);
 
-  size_t write = MSG_file_write(NULL,0,0,file);
-  XBT_INFO("Host '%s' write %ld",MSG_host_get_name(MSG_host_self()), write);
+  XBT_INFO("\tCapacity of the storage element '%s' is stored on: %llu / %llu",
+            filename, MSG_storage_get_used_size(st), MSG_storage_get_size(st));
+
+  /* rewind to the beginning of the file */
+  XBT_INFO("\tComing back to the beginning of the stream for file '%s'",
+           filename);
+  MSG_file_seek(file, 0, SEEK_SET);
+
+  /* Try to read 110KB */
+  read = MSG_file_read(file, 110000);
+  XBT_INFO("\tHave read %llu from '%s' (of size %llu)",read,filename,
+      MSG_file_get_size(file));
+
+  /* rewind once again to the beginning of the file */
+  XBT_INFO("\tComing back to the beginning of the stream for file '%s'",
+           filename);
+  MSG_file_seek(file, 0, SEEK_SET);
+
+  /* Write 110KB in file from the current position, i.e, end of file or 10MB */
+  write = MSG_file_write(file, 110000);
+  XBT_INFO("\tHave written %llu in '%s'. Size now is: %llu", write,filename,
+      MSG_file_get_size(file));
+
+  XBT_INFO("\tCapacity of the storage element '%s' is stored on: %llu / %llu",
+            filename, MSG_storage_get_used_size(st), MSG_storage_get_size(st));
+
+  XBT_INFO("\tClose file '%s'",filename);
+  MSG_file_close(file);
 
-  int res = MSG_file_stat(0,NULL);
-  XBT_INFO("Host '%s' stat %d",MSG_host_get_name(MSG_host_self()), res);
 
-  res = MSG_file_close(file);
-  XBT_INFO("Host '%s' close %d",MSG_host_get_name(MSG_host_self()), res);
   return 0;
 }
 
 int main(int argc, char **argv)
 {
-    int i,res;
-  MSG_global_init(&argc, argv);
+  int i,res;
+  MSG_init(&argc, argv);
   MSG_create_environment(argv[1]);
-  m_host_t *host_table =  MSG_get_host_table();
-  int number_of_hosts = MSG_get_host_number();
+  xbt_dynar_t hosts =  MSG_hosts_as_dynar();
   MSG_function_register("host", host);
-
-  XBT_INFO("Number of host '%d'",number_of_hosts);
-  for(i = 0 ; i<number_of_hosts; i++)
+  unsigned long nb_hosts = xbt_dynar_length(hosts);
+  XBT_INFO("Number of host '%lu'",nb_hosts);
+  for(i = 0 ; i<nb_hosts; i++)
   {
     char* name_host = bprintf("%d",i);
-    MSG_process_create( name_host, host, NULL, host_table[i] );
+    MSG_process_create( name_host, host, NULL, xbt_dynar_get_as(hosts,i,msg_host_t) );
     free(name_host);
   }
-  xbt_free(host_table);
+  xbt_dynar_free(&hosts);
 
   res = MSG_main();
   XBT_INFO("Simulation time %g", MSG_get_clock());
-  MSG_clean();
   if (res == MSG_OK)
     return 0;
   else