X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/9203fa06f28cebe61bebece905e1ec4b5d986436..e6e59f1a8345f70bc3a44d7b2789d0ab9a8bdc9b:/examples/msg/io-file/io-file.c

diff --git a/examples/msg/io-file/io-file.c b/examples/msg/io-file/io-file.c
new file mode 100644
index 0000000000..c72e615c66
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+++ b/examples/msg/io-file/io-file.c
@@ -0,0 +1,112 @@
+/* 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 "simgrid/msg.h"
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(io_file, "Messages specific for this io example");
+
+static int host(int argc, char *argv[])
+{
+  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));
+
+
+  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);
+
+  return 0;
+}
+
+int main(int argc, char **argv)
+{
+  MSG_init(&argc, argv);
+  MSG_create_environment(argv[1]);
+  xbt_dynar_t hosts =  MSG_hosts_as_dynar();
+  MSG_function_register("host", host);
+  unsigned long nb_hosts = xbt_dynar_length(hosts);
+  XBT_INFO("Number of host '%lu'",nb_hosts);
+  for(int i = 0 ; i<nb_hosts; i++){
+    char* name_host = bprintf("%d",i);
+    MSG_process_create( name_host, host, NULL, xbt_dynar_get_as(hosts,i,msg_host_t) );
+    free(name_host);
+  }
+  xbt_dynar_free(&hosts);
+
+  int res = MSG_main();
+  XBT_INFO("Simulation time %g", MSG_get_clock());
+  return res != MSG_OK;
+}