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Merge branch 'master' of git+ssh://scm.gforge.inria.fr//gitroot//simgrid/simgrid
[simgrid.git] / examples / msg / io / file.c
1 /* Copyright (c) 2008, 2009, 2010. The SimGrid Team.
2  * All rights reserved.                                                     */
3
4 /* This program is free software; you can redistribute it and/or modify it
5  * under the terms of the license (GNU LGPL) which comes with this package. */
6
7 /** @addtogroup MSG_examples
8  * 
9  * @subsection MSG_ex_resources Other resource kinds
10  * 
11  * This section contains some sparse examples of how to use the other
12  * kind of resources, such as disk or GPU. These resources are quite
13  * experimental for now, but here we go anyway.
14  * 
15  * - <b>io/file.c</b> Example with the disk resource
16  */
17
18 #define FILENAME1 "/home/user/Install/simgrid/doc/simgrid/examples/platforms/g5k.xml"
19 #define FILENAME2 "/home/user/Install/simgrid/doc/simgrid/examples/platforms/One_cluster_no_backbone.xml"
20 #define FILENAME3 "/home/user/Install/simgrid/doc/simgrid/examples/platforms/g5k_cabinets.xml"
21 #define FILENAME4 "/home/user/Install/simgrid/doc/simgrid/examples/platforms/nancy.xml"
22
23 #include <stdio.h>
24 #include <stdlib.h>
25 #include "msg/msg.h"
26 #include "surf/surf_private.h"
27
28 int host(int argc, char *argv[]);
29
30 XBT_LOG_NEW_DEFAULT_CATEGORY(io_file,
31                              "Messages specific for this io example");
32
33 int host(int argc, char *argv[])
34 {
35   msg_file_t file = NULL;
36   s_msg_stat_t stat;
37
38   char* mount = bprintf("C:");
39   size_t read,write;
40   if(!strcmp(MSG_process_get_name(MSG_process_self()),"0"))
41     file = MSG_file_open(mount,FILENAME1,"rw");
42   else if(!strcmp(MSG_process_get_name(MSG_process_self()),"1"))
43     file = MSG_file_open(mount,FILENAME2,"rw");
44   else if(!strcmp(MSG_process_get_name(MSG_process_self()),"2"))
45     file = MSG_file_open(mount,FILENAME3,"rw");
46   else if(!strcmp(MSG_process_get_name(MSG_process_self()),"3"))
47     file = MSG_file_open(mount,FILENAME4,"rw");
48   else xbt_die("FILENAME NOT DEFINED %s",MSG_process_get_name(MSG_process_self()));
49
50   XBT_INFO("\tOpen file '%s'",file->name);
51
52   read = MSG_file_read(mount,NULL,10000000,sizeof(char*),file);     // Read for 10Mo
53   XBT_INFO("\tHaving read  %Zu \ton %s",read,file->name);
54
55   write = MSG_file_write(mount,NULL,100000,sizeof(char*),file);  // Write for 100Ko
56   XBT_INFO("\tHaving write %Zu \ton %s",write,file->name);
57
58   read = MSG_file_read(mount,NULL,10000000,sizeof(char*),file);     // Read for 10Mo
59   XBT_INFO("\tHaving read  %Zu \ton %s",read,file->name);
60
61   MSG_file_stat(mount,file,&stat);
62   XBT_INFO("\tFile %s Size %d",file->name,(int)stat.size);
63
64   XBT_INFO("\tClose file '%s'",file->name);
65   MSG_file_close(mount,file);
66
67   free(mount);
68   return 0;
69 }
70
71 int main(int argc, char **argv)
72 {
73     int i,res;
74   MSG_global_init(&argc, argv);
75   MSG_create_environment(argv[1]);
76   xbt_dynar_t hosts =  MSG_hosts_as_dynar();
77   MSG_function_register("host", host);
78
79   XBT_INFO("Number of host '%lu'",xbt_dynar_length(hosts));
80   for(i = 0 ; i<xbt_dynar_length(hosts); i++)
81   {
82     char* name_host = bprintf("%d",i);
83     MSG_process_create( name_host, host, NULL, xbt_dynar_get_as(hosts,i,m_host_t) );
84     free(name_host);
85   }
86   xbt_dynar_free(&hosts);
87
88   res = MSG_main();
89   XBT_INFO("Simulation time %g", MSG_get_clock());
90   MSG_clean();
91   if (res == MSG_OK)
92     return 0;
93   else
94     return 1;
95
96 }