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#!perl -w
# Tests if $$ and getppid return consistent values across threads
BEGIN {
chdir 't' if -d 't';
@INC = qw(../lib);
require './test.pl';
}
use strict;
use Config;
BEGIN {
skip_all_without_config(qw(useithreads d_getppid));
skip_all_if_miniperl("no dynamic loading on miniperl, no threads");
eval 'use threads; use threads::shared';
plan tests => 3;
if ($@) {
fail("unable to load thread modules");
}
else {
pass("thread modules loaded");
}
}
my ($pid, $ppid) = ($$, getppid());
my $pid2 : shared = 0;
my $ppid2 : shared = 0;
new threads( sub { ($pid2, $ppid2) = ($$, getppid()); } ) -> join();
# If this breaks you're either running under LinuxThreads (and we
# haven't detected it) or your system doesn't have POSIX thread
# semantics.
# Newer linuxthreads from gnukfreebsd (0.11) does have POSIX thread
# semantics, so include a version check
# <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=675606>
my $thread_version = qx[getconf GNU_LIBPTHREAD_VERSION 2>&1];
chomp $thread_version;
if ($^O =~ /^(?:gnukfreebsd|linux)$/ and
$thread_version =~ /linuxthreads/ and
!($thread_version =~ /linuxthreads-(.*)/ && $1 >= 0.11)) {
diag "We're running under $^O with linuxthreads <$thread_version>";
isnt($pid, $pid2, "getpid() in a thread is different from the parent on this non-POSIX system");
isnt($ppid, $ppid2, "getppid() in a thread is different from the parent on this non-POSIX system");
} else {
is($pid, $pid2, 'getpid() in a thread is the same as in the parent');
is($ppid, $ppid2, 'getppid() in a thread is the same as in the parent');
}
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