1 /* Copyright (c) 2008-2016. The SimGrid Team. All rights reserved. */
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. */
6 #include "simgrid/msg.h"
8 XBT_LOG_NEW_DEFAULT_CATEGORY(io_file, "Messages specific for this io example");
10 static int host(int argc, char *argv[])
12 msg_file_t file = NULL;
18 switch(MSG_process_self_PID()){
20 file = MSG_file_open("c:\\Windows\\setupact.log", NULL);
24 file = MSG_file_open("/home/doc/simgrid/examples/platforms/nancy.xml", NULL);
28 file = MSG_file_open("/home/doc/simgrid/examples/platforms/g5k_cabinets.xml", NULL);
32 file = MSG_file_open("/home/doc/simgrid/examples/platforms/g5k.xml", NULL);
37 xbt_die("FILENAME NOT DEFINED %s",MSG_process_get_name(MSG_process_self()));
40 const char* filename = MSG_file_get_name(file);
41 XBT_INFO("\tOpen file '%s'",filename);
42 st = MSG_storage_get_by_name(st_name);
44 XBT_INFO("\tCapacity of the storage element '%s' is stored on: %llu / %llu",
45 filename, MSG_storage_get_used_size(st), MSG_storage_get_size(st));
47 /* Try to read for 10MB */
48 read = MSG_file_read(file, 10000000);
49 XBT_INFO("\tHave read %llu from '%s'",read,filename);
51 /* Write 100KB in file from the current position, i.e, end of file or 10MB */
52 write = MSG_file_write(file, 100000);
53 XBT_INFO("\tHave written %llu in '%s'. Size now is: %llu",write,filename, MSG_file_get_size(file));
56 XBT_INFO("\tCapacity of the storage element '%s' is stored on: %llu / %llu",
57 filename, MSG_storage_get_used_size(st), MSG_storage_get_size(st));
59 /* rewind to the beginning of the file */
60 XBT_INFO("\tComing back to the beginning of the stream for file '%s'", filename);
61 MSG_file_seek(file, 0, SEEK_SET);
63 /* Try to read 110KB */
64 read = MSG_file_read(file, 110000);
65 XBT_INFO("\tHave read %llu from '%s' (of size %llu)",read,filename, MSG_file_get_size(file));
67 /* rewind once again to the beginning of the file */
68 XBT_INFO("\tComing back to the beginning of the stream for file '%s'", filename);
69 MSG_file_seek(file, 0, SEEK_SET);
71 /* Write 110KB in file from the current position, i.e, end of file or 10MB */
72 write = MSG_file_write(file, 110000);
73 XBT_INFO("\tHave written %llu in '%s'. Size now is: %llu", write,filename, MSG_file_get_size(file));
75 XBT_INFO("\tCapacity of the storage element '%s' is stored on: %llu / %llu",
76 filename, MSG_storage_get_used_size(st), MSG_storage_get_size(st));
78 if (MSG_process_self_PID() == 1){
79 XBT_INFO("\tUnlink file '%s'", MSG_file_get_name(file));
80 MSG_file_unlink(file);
82 XBT_INFO("\tClose file '%s'", filename);
88 int main(int argc, char **argv)
90 MSG_init(&argc, argv);
91 MSG_create_environment(argv[1]);
92 xbt_dynar_t hosts = MSG_hosts_as_dynar();
93 MSG_function_register("host", host);
94 unsigned long nb_hosts = xbt_dynar_length(hosts);
95 XBT_INFO("Number of host '%lu'",nb_hosts);
96 for(int i = 0 ; i < nb_hosts; i++){
97 MSG_process_create("host", host, NULL, xbt_dynar_get_as(hosts,i,msg_host_t));
99 xbt_dynar_free(&hosts);
101 int res = MSG_main();
102 XBT_INFO("Simulation time %.6f", MSG_get_clock());
103 return res != MSG_OK;