1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
/* Copyright (c) 2012-2018. 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. */
/********************* Files and Storage handling ****************************
* This example implements all main file functions of the MSG API
*
* Scenario: Each host
* - opens a file
* - tries to read 10,000 bytes in this file
* - writes 100,000 bytes in the file
* - seeks back to the beginning of the file
* - tries to read 150,000 bytes in this file
*
******************************************************************************/
package io.file;
import org.simgrid.msg.Msg;
import org.simgrid.msg.File;
import org.simgrid.msg.Host;
import org.simgrid.msg.Process;
import org.simgrid.msg.MsgException;
public class Node extends Process {
private static String file1 = "/doc/simgrid/examples/platforms/g5k.xml";
private static String file2 = "\\Windows\\setupact.log";
private static String file3 = "/doc/simgrid/examples/platforms/g5k_cabinets.xml";
private static String file4 = "/doc/simgrid/examples/platforms/nancy.xml";
protected int rank;
public Node(Host host, int number) {
super(host, Integer.toString(number), null);
this.rank = number;
}
public void main(String[] args) throws MsgException {
String mount = "/home";
String fileName;
switch (rank) {
case 4:
fileName = mount + file1;
break;
case 0:
mount = "c:";
fileName = mount + file2;
break;
case 2:
fileName = mount + file3;
break;
case 1:
fileName = mount + file4;
break;
default:
fileName = mount + file1;
break;
}
Msg.info("Open file " + fileName);
File file = new File(fileName);
long read = file.read(10000,1);
Msg.info("Having read " + read + " on " + fileName);
long write = file.write(100000,1);
Msg.info("Having write " + write + " on " + fileName);
Msg.info("Seek back to the beginning of " + fileName);
file.seek(0,File.SEEK_SET);
read = file.read(150000,1);
Msg.info("Having read " + read + " on " + fileName);
}
}
|
