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[simgrid.git] / examples / s4u / io / s4u_io_test.cpp
1 /* Copyright (c) 2006-2015. The SimGrid Team. All rights reserved.          */
2
3 /* This program is free software; you can redistribute it and/or modify it
4  * under the terms of the license (GNU LGPL) which comes with this package. */
5
6 #include <map>
7 #include <unordered_map>
8 #include <vector>
9
10 #include "simgrid/s4u.h"
11
12 XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_test, "a sample log category");
13
14 class myHost : simgrid::s4u::Actor {
15 public:
16         myHost(const char*procname, simgrid::s4u::Host *host,int argc, char **argv)
17 : simgrid::s4u::Actor(procname,host,argc,argv){}
18
19         void show_info(boost::unordered_map <std::string, simgrid::s4u::Storage*> &mounts) {
20                 XBT_INFO("Storage info on %s:",
21                         simgrid::s4u::Host::current()->name().c_str());
22
23                 for (const auto&kv : mounts) {
24                         const char* mountpoint = kv.first.c_str();
25                         simgrid::s4u::Storage &storage = *kv.second;
26
27                         // Retrieve disk's information
28                         sg_size_t free_size = storage.size_free();
29                         sg_size_t used_size = storage.size_used();
30                         sg_size_t size = storage.size();
31
32                         XBT_INFO("    %s (%s) Used: %llu; Free: %llu; Total: %llu.",
33                                         storage.name(), mountpoint, used_size, free_size, size);
34                 }
35         }
36
37         int main(int argc, char **argv) {
38                 boost::unordered_map <std::string, simgrid::s4u::Storage *>& mounts =
39                         simgrid::s4u::Host::current()->mountedStorages();
40
41                 show_info(mounts);
42
43                 // Open an non-existing file to create it
44                 const char *filename = "/home/tmp/data.txt";
45                 simgrid::s4u::File *file = new simgrid::s4u::File(filename, NULL);
46                 sg_size_t write, read, file_size;
47
48                 write = file->write(200000);  // Write 200,000 bytes
49                 XBT_INFO("Create a %llu bytes file named '%s' on /sd1", write, filename);
50
51                 // check that sizes have changed
52                 show_info(mounts);
53
54                 // Now retrieve the size of created file and read it completely
55                 file_size = file->size();
56                 file->seek(0);
57                 read = file->read(file_size);
58                 XBT_INFO("Read %llu bytes on %s", read, filename);
59
60                 // Now write 100,000 bytes in tmp/data.txt
61                 write = file->write(100000);  // Write 100,000 bytes
62                 XBT_INFO("Write %llu bytes on %s", write, filename);
63
64                 simgrid::s4u::Storage &storage = simgrid::s4u::Storage::byName("Disk4");
65
66                 // Now rename file from ./tmp/data.txt to ./tmp/simgrid.readme
67                 const char *newpath = "/home/tmp/simgrid.readme";
68                 XBT_INFO("Move '%s' to '%s'", file->path(), newpath);
69                 file->move(newpath);
70
71                 // Test attaching some user data to the file
72                 file->set_userdata(xbt_strdup("777"));
73                 XBT_INFO("User data attached to the file: %s", (char*)file->userdata());
74
75                 // Close the file
76                 delete file;
77
78                 // Now attach some user data to disk1
79                 XBT_INFO("Get/set data for storage element: %s",storage.name());
80                 XBT_INFO("    Uninitialized storage data: '%s'", (char*)storage.userdata());
81
82                 storage.set_userdata(xbt_strdup("Some user data"));
83                 XBT_INFO("    Set and get data: '%s'", (char*)storage.userdata());
84
85                 /*
86                   // Dump disks contents
87                   XBT_INFO("*** Dump content of %s ***",Host::current()->name());
88                   xbt_dict_t contents = NULL;
89                   contents = MSG_host_get_storage_content(MSG_host_self()); // contents is a dict of dicts
90                   xbt_dict_cursor_t curs, curs2 = NULL;
91                   char* mountname;
92                   xbt_dict_t content;
93                   char* path;
94                   sg_size_t *size;
95                   xbt_dict_foreach(contents, curs, mountname, content){
96                     XBT_INFO("Print the content of mount point: %s",mountname);
97                     xbt_dict_foreach(content,curs2,path,size){
98                        XBT_INFO("%s size: %llu bytes", path,*((sg_size_t*)size));
99                     }
100                   xbt_dict_free(&content);
101                   }
102                   xbt_dict_free(&contents);
103                  */
104                 return 0;
105         }
106 };
107
108 int main(int argc, char **argv) {
109         simgrid::s4u::Engine *e = new simgrid::s4u::Engine(&argc,argv);
110         e->loadPlatform("../../platforms/storage/storage.xml");
111
112         new myHost("host", simgrid::s4u::Host::by_name("denise"), 0, NULL);
113         e->run();
114         return 0;
115 }