SimGrid  3.16
Versatile Simulation of Distributed Systems
examples/msg/io-file/io-file.c
/* Copyright (c) 2008-2016. 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. */
#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;
sg_size_t write;
const char* st_name;
case 1:
file = MSG_file_open("c:\\Windows\\setupact.log", NULL);
st_name = "Disk2";
break;
case 2:
file = MSG_file_open("/home/doc/simgrid/examples/platforms/nancy.xml", NULL);
st_name = "Disk1";
break;
case 3:
file = MSG_file_open("/home/doc/simgrid/examples/platforms/g5k_cabinets.xml", NULL);
st_name = "Disk3";
break;
case 4:
file = MSG_file_open("/home/doc/simgrid/examples/platforms/g5k.xml", NULL);
st_name = "Disk4";
break;
default:
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",
/* 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",
/* rewind to the beginning of the file */
XBT_INFO("\tComing back to the beginning of the stream for file '%s'", filename);
/* 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);
/* 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",
if (MSG_process_self_PID() == 1){
XBT_INFO("\tUnlink file '%s'",MSG_file_get_name(file));
} else {
XBT_INFO("\tClose file '%s'",filename);
}
return 0;
}
int main(int argc, char **argv)
{
MSG_init(&argc, argv);
unsigned long nb_hosts = xbt_dynar_length(hosts);
XBT_INFO("Number of host '%lu'",nb_hosts);
for(int i = 0 ; i < nb_hosts; i++){
}
xbt_dynar_free(&hosts);
int res = MSG_main();
XBT_INFO("Simulation time %g", MSG_get_clock());
return res != MSG_OK;
}