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Update IPC-SysV to CPAN version 2.04
[perl5.git] / cpan / IPC-SysV / t / shm.t
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1################################################################################
2#
dd0df890 3# Version 2.x, Copyright (C) 2007-2013, Marcus Holland-Moritz <mhx@cpan.org>.
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4# Version 1.x, Copyright (C) 1999, Graham Barr <gbarr@pobox.com>.
5#
6# This program is free software; you can redistribute it and/or
7# modify it under the same terms as Perl itself.
8#
9################################################################################
10
11BEGIN {
12 if ($ENV{'PERL_CORE'}) {
13 chdir 't' if -d 't';
14 @INC = '../lib' if -d '../lib' && -d '../ext';
15 }
16
17 require Test::More; import Test::More;
18 require Config; import Config;
19
20 if ($ENV{'PERL_CORE'} && $Config{'extensions'} !~ m[\bIPC/SysV\b]) {
21 plan(skip_all => 'IPC::SysV was not built');
22 }
23}
24
25if ($Config{'d_shm'} ne 'define') {
26 plan(skip_all => '$Config{d_shm} undefined');
27}
28
29use IPC::SysV qw( IPC_PRIVATE S_IRWXU );
30use IPC::SharedMem;
31
32my $shm = sub {
33 my $code = shift;
34 if (exists $SIG{SYS}) {
35 local $SIG{SYS} = sub { plan(skip_all => "SIGSYS caught") };
36 return $code->();
37 }
38 return $code->();
39}->(sub { IPC::SharedMem->new(IPC_PRIVATE, 8, S_IRWXU) });
40
41unless (defined $shm) {
42 my $info = "IPC::SharedMem->new failed: $!";
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43 if ($! == &IPC::SysV::ENOSPC || $! == &IPC::SysV::ENOSYS ||
44 $! == &IPC::SysV::ENOMEM || $! == &IPC::SysV::EACCES) {
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45 plan(skip_all => $info);
46 }
47 else {
48 die $info;
49 }
50}
51
52plan(tests => 23);
53
54pass('acquired shared mem');
55
56my $st = $shm->stat;
57
58ok($st, 'stat it');
59is($st->nattch, 0, 'st->nattch');
60is($st->cpid, $$, 'cpid');
61ok($st->segsz >= 8, 'segsz');
62
63ok($shm->write(pack("N", 4711), 0, 4), 'write(offs=0)');
64ok($shm->write(pack("N", 210577), 4, 4), 'write(offs=4)');
65
66is($shm->read(0, 4), pack("N", 4711), 'read(offs=0)');
67is($shm->read(4, 4), pack("N", 210577), 'read(offs=4)');
68
69ok($shm->attach, 'attach');
70
71$st = $shm->stat;
72
73ok($st, 'stat it');
74is($st->nattch, 1, 'st->nattch');
75is($st->cpid, $$, 'lpid');
76
77is($shm->read(0, 4), pack("N", 4711), 'read(offs=0)');
78is($shm->read(4, 4), pack("N", 210577), 'read(offs=4)');
79
80ok($shm->write("Shared", 1, 6), 'write(offs=1)');
81
82ok(!$shm->is_removed, '!is_removed');
83ok($shm->remove, 'remove');
84ok($shm->is_removed, 'is_removed');
85
86is($shm->read(1, 6), 'Shared', 'read(offs=1)');
87ok($shm->write("Memory", 0, 6), 'write(offs=0)');
88is(unpack("P6", $shm->addr), 'Memory', 'read using unpack');
89
90ok($shm->detach, 'detach');
91