simplify the examples of file usage

[simgrid.git] / examples / msg / io / file.c

diff --git a/examples/msg/io/file.c b/examples/msg/io/file.c
index c52c2fd..6a6cc80 100644 (file)
--- a/examples/msg/io/file.c
+++ b/examples/msg/io/file.c
@@ -4,6 +4,22 @@
 /* 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 "./doc/simgrid/examples/platforms/g5k.xml"
+#define FILENAME2 "./doc/simgrid/examples/platforms/One_cluster_no_backbone.xml"
+#define FILENAME3 "./doc/simgrid/examples/platforms/g5k_cabinets.xml"
+#define FILENAME4 "./doc/simgrid/examples/platforms/nancy.xml"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include "msg/msg.h"
@@ -16,45 +32,58 @@ 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;
+  void *ptr = NULL;
+  char* mount = xbt_strdup("/home");
+  size_t read,write;
+
+  if(!strcmp(MSG_process_get_name(MSG_process_self()),"0"))
+    file = MSG_file_open(mount,FILENAME1,"rw");
+  else if(!strcmp(MSG_process_get_name(MSG_process_self()),"1"))
+    file = MSG_file_open(mount,FILENAME2,"rw");
+  else if(!strcmp(MSG_process_get_name(MSG_process_self()),"2"))
+    file = MSG_file_open(mount,FILENAME3,"rw");
+  else if(!strcmp(MSG_process_get_name(MSG_process_self()),"3"))
+    file = MSG_file_open(mount,FILENAME4,"rw");
+  else xbt_die("FILENAME NOT DEFINED %s",MSG_process_get_name(MSG_process_self()));
 
-  size_t read = MSG_file_read(NULL,0,0,file);
-  XBT_INFO("Host '%s' read %ld",MSG_host_get_name(MSG_host_self()),read);
+  XBT_INFO("\tOpen file '%s'",file->name);
 
-  size_t write = MSG_file_write(NULL,0,0,file);
-  XBT_INFO("Host '%s' write %ld",MSG_host_get_name(MSG_host_self()), write);
+  read = MSG_file_read(ptr,10000000,sizeof(char*),file);     // Read for 10MB
+  XBT_INFO("\tHave read    %zu on %s",read,file->name);
 
-  int res = MSG_file_stat(0,NULL);
-  XBT_INFO("Host '%s' stat %d",MSG_host_get_name(MSG_host_self()), res);
+  write = MSG_file_write(ptr,100000,sizeof(char*),file);  // Write for 100KB
+  XBT_INFO("\tHave written %zu on %s",write,file->name);
 
-  res = MSG_file_close(file);
-  XBT_INFO("Host '%s' close %d",MSG_host_get_name(MSG_host_self()), res);
+  read = MSG_file_read(ptr,110000,sizeof(char*),file);     // Read for 110KB
+  XBT_INFO("\tHave read    %zu on %s",read,file->name);
+
+  XBT_INFO("\tClose file '%s'",file->name);
+  MSG_file_close(file);
+
+  free(mount);
   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