Blame t/threads.t

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# as of 2.09 on win32 Storable w/threads dies with "free to wrong
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# pool" since it uses the same context for different threads. since
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# win32 perl implementation allocates a different memory pool for each
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# thread using the a memory pool from one thread to allocate memory
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# for another thread makes win32 perl very unhappy
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#
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# but the problem exists everywhere, not only on win32 perl , it's
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# just hard to catch it deterministically - since the same context is
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# used if two or more threads happen to change the state of the
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# context in the middle of the operation, and those operations aren't
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# atomic per thread, bad things including data loss and corrupted data
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# can happen.
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#
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# this has been solved in 2.10 by adding a Storable::CLONE which calls
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# Storable::init_perinterp() to create a new context for each new
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# thread when it starts
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sub BEGIN {
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    unshift @INC, 't';
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    unshift @INC, 't/compat' if $] < 5.006002;
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    require Config; import Config;
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    if ($ENV{PERL_CORE} and $Config{'extensions'} !~ /\bStorable\b/) {
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        print "1..0 # Skip: Storable was not built\n";
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        exit 0;
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    }
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    unless ($Config{'useithreads'} and eval { require threads; 1 }) {
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        print "1..0 # Skip: no threads\n";
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        exit 0;
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    }
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    if ($] eq "5.008" || $] eq "5.010000") {
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        print "1..0 # Skip: threads unreliable in perl-$]\n";
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        exit 0;
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    }
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    # - is \W, so can't use \b at start. Negative look ahead and look behind
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    # works at start/end of string, or where preceded/followed by spaces
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    if ($] == 5.008002 and eval q{ $Config{'ccflags'} =~ /(?
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	# Bug caused by change 21610, fixed by change 21849
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        print "1..0 # Skip: tickles bug in threads combined with -DDEBUGGING on 5.8.2\n";
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        exit 0;
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    }
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}
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use Test::More;
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use strict;
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use threads;
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use Storable qw(nfreeze);
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plan tests => 2;
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threads->new(\&sub1;;
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$_->join() for threads->list();
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ok 1;
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sub sub1 {
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    nfreeze {};
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    ok 1;
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}