xref: /openbsd/gnu/usr.bin/perl/cpan/File-Temp/t/fork.t (revision 73471bf0) 
1#!/usr/bin/perl
2$| = 1;
3
4# Note that because fork loses test count we do not use Test::More
5
6use strict;
7
8BEGIN {
9  require Config;
10  my $can_fork = $Config::Config{d_fork} ||
11    (($^O eq 'MSWin32' || $^O eq 'NetWare') and
12     $Config::Config{useithreads} and
13     $Config::Config{ccflags} =~ /-DPERL_IMPLICIT_SYS/
14    );
15  if ( $can_fork ) {
16    print "1..8\n";
17  } else {
18    print "1..0 # Skip No fork available\n";
19    exit;
20  }
21}
22
23use File::Temp;
24
25# OO interface
26
27my $file = File::Temp->new();
28
29myok( 1, -f $file->filename, "OO File exists" );
30
31my $children = 2;
32for my $i (1 .. $children) {
33  my $pid = fork;
34  die "Can't fork: $!" unless defined $pid;
35  if ($pid) {
36    # parent process
37    next;
38  } else {
39    # in a child we can't keep the count properly so we do it manually
40    # make sure that child 1 dies first
41    srand();
42    my $time = (($i-1) * 5) +int(rand(5));
43    print "# child $i sleeping for $time seconds\n";
44    sleep($time);
45    my $count = $i + 1;
46    myok( $count, -f $file->filename(), "OO file present in child $i" );
47    print "# child $i exiting\n";
48    exit;
49  }
50}
51
52while ($children) {
53    wait;
54    $children--;
55}
56
57
58
59myok( 4, -f $file->filename(), "OO File exists in parent" );
60
61# non-OO interface
62
63my ($fh, $filename) = File::Temp::tempfile( UNLINK => 1 );
64
65myok( 5, -f $filename, "non-OO File exists" );
66
67$children = 2;
68for my $i (1 .. $children) {
69  my $pid = fork;
70  die "Can't fork: $!" unless defined $pid;
71  if ($pid) {
72    # parent process
73    next;
74  } else {
75    srand();
76    my $time = (($i-1) * 5) +int(rand(5));
77    print "# child $i sleeping for $time seconds\n";
78    sleep($time);
79    my $count = 5 + $i;
80    myok( $count, -f $filename, "non-OO File present in child $i" );
81    print "# child $i exiting\n";
82    exit;
83  }
84}
85
86while ($children) {
87    wait;
88    $children--;
89}
90myok(8, -f $filename, "non-OO File exists in parent" );
91
92
93# Local ok sub handles explicit number
94sub myok {
95  my ($count, $test, $msg) = @_;
96
97  if ($test) {
98    print "ok $count - $msg\n";
99  } else {
100    print "not ok $count - $msg\n";
101  }
102  return $test;
103}
104