1
2# as of 2.09 on win32 Storable w/threads dies with "free to wrong
3# pool" since it uses the same context for different threads. since
4# win32 perl implementation allocates a different memory pool for each
5# thread using the a memory pool from one thread to allocate memory
6# for another thread makes win32 perl very unhappy
7#
8# but the problem exists everywhere, not only on win32 perl , it's
9# just hard to catch it deterministically - since the same context is
10# used if two or more threads happen to change the state of the
11# context in the middle of the operation, and those operations aren't
12# atomic per thread, bad things including data loss and corrupted data
13# can happen.
14#
15# this has been solved in 2.10 by adding a Storable::CLONE which calls
16# Storable::init_perinterp() to create a new context for each new
17# thread when it starts
18
19sub BEGIN {
20    unshift @INC, 't';
21    unshift @INC, 't/compat' if $] < 5.006002;
22    require Config; import Config;
23    if ($ENV{PERL_CORE} and $Config{'extensions'} !~ /\bStorable\b/) {
24        print "1..0 # Skip: Storable was not built\n";
25        exit 0;
26    }
27    unless ($Config{'useithreads'} and eval { require threads; 1 }) {
28        print "1..0 # Skip: no threads\n";
29        exit 0;
30    }
31    if ($] eq "5.008" || $] eq "5.010000") {
32        print "1..0 # Skip: threads unreliable in perl-$]\n";
33        exit 0;
34    }
35    # - is \W, so can't use \b at start. Negative look ahead and look behind
36    # works at start/end of string, or where preceded/followed by spaces
37    if ($] == 5.008002 and eval q{ $Config{'ccflags'} =~ /(?<!\S)-DDEBUGGING(?!\S)/ }) {
38	# Bug caused by change 21610, fixed by change 21849
39        print "1..0 # Skip: tickles bug in threads combined with -DDEBUGGING on 5.8.2\n";
40        exit 0;
41    }
42}
43
44use Test::More;
45
46use strict;
47
48use threads;
49use Storable qw(nfreeze);
50
51plan tests => 2;
52
53threads->new(\&sub1);
54
55$_->join() for threads->list();
56
57ok 1;
58
59sub sub1 {
60    nfreeze {};
61    ok 1;
62}
63