X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/cf6a47ee6e6c3b4b884c577ba9d7324ae4f32783..3203ed1f4fb6f4617e94d5351661ba07e8b8f833:/examples/msg/io/file.c

diff --git a/examples/msg/io/file.c b/examples/msg/io/file.c
index 9e07765119..cb5df5501d 100644
--- a/examples/msg/io/file.c
+++ b/examples/msg/io/file.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2008-2010, 2012-2013. 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
@@ -15,16 +15,14 @@
  * - <b>io/file.c</b> Example with the disk resource
  */
 
-#define FILENAME1 "./doc/simgrid/examples/platforms/g5k.xml"
-#define FILENAME2 ".\\Windows\\setupact.log"
-#define FILENAME3 "./doc/simgrid/examples/platforms/g5k_cabinets.xml"
-#define FILENAME4 "./doc/simgrid/examples/platforms/nancy.xml"
+#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 "inttypes.h"
+#include "simgrid/msg.h"
 
 int host(int argc, char *argv[]);
 
@@ -34,38 +32,73 @@ XBT_LOG_NEW_DEFAULT_CATEGORY(io_file,
 int host(int argc, char *argv[])
 {
   msg_file_t file = NULL;
-  char* mount = xbt_strdup("/home");
-  sg_storage_size_t read,write;
+  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(mount,FILENAME1, NULL);
+    file = MSG_file_open(FILENAME1, NULL);
     MSG_file_dump(file);
+    st_name = "Disk4";
   } else if(!strcmp(MSG_process_get_name(MSG_process_self()),"1")) {
-    free(mount);
-    mount = xbt_strdup("/windows");
-    file = MSG_file_open(mount,FILENAME2, NULL);
+    file = MSG_file_open(FILENAME2, NULL);
+    st_name = "Disk2";
   } else if(!strcmp(MSG_process_get_name(MSG_process_self()),"2")){
-    file = MSG_file_open(mount,FILENAME3, NULL);
-  } else if(!strcmp(MSG_process_get_name(MSG_process_self()),"3"))
-    file = MSG_file_open(mount,FILENAME4, NULL);
+    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()));
 
-  XBT_INFO("\tOpen file '%s'",file->fullname);
+  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));
+
 
-  read = MSG_file_read(file, 10000000);     // Read for 10MB
-  XBT_INFO("\tHave read    %" PRIu64 " on %s",read,file->fullname);
+  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));
 
-  write = MSG_file_write(file, 100000);  // Write for 100KB
-  XBT_INFO("\tHave written %" PRIu64 " on %s",write,file->fullname);
+  /* 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);
 
-  read = MSG_file_read(file, 110000);     // Read for 110KB
-  XBT_INFO("\tHave read    %" PRIu64 " on %s (of size %" PRIu64 ")",read,file->fullname,
+  /* 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));
 
-  XBT_INFO("\tClose file '%s'",file->fullname);
+  /* 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);
 
-  free(mount);
+
   return 0;
 }