3 # Tests if $$ and getppid return consistent values across threads
15 skip_all_without_config(qw(useithreads d_getppid));
16 skip_all_if_miniperl("no dynamic loading on miniperl, no threads");
17 eval 'use threads; use threads::shared';
20 fail("unable to load thread modules");
23 pass("thread modules loaded");
27 my ($pid, $ppid) = ($$, getppid());
28 my $pid2 : shared = 0;
29 my $ppid2 : shared = 0;
31 new threads( sub { ($pid2, $ppid2) = ($$, getppid()); } ) -> join();
33 # If this breaks you're either running under LinuxThreads (and we
34 # haven't detected it) or your system doesn't have POSIX thread
36 # Newer linuxthreads from gnukfreebsd (0.11) does have POSIX thread
37 # semantics, so include a version check
38 # <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=675606>
39 my $thread_version = qx[getconf GNU_LIBPTHREAD_VERSION 2>&1] // '';
40 chomp $thread_version;
41 if ($^O =~ /^(?:gnukfreebsd|linux)$/ and
42 $thread_version =~ /linuxthreads/ and
43 !($thread_version =~ /linuxthreads-(.*)/ && $1 >= 0.11)) {
44 diag "We're running under $^O with linuxthreads <$thread_version>";
45 isnt($pid, $pid2, "getpid() in a thread is different from the parent on this non-POSIX system");
46 isnt($ppid, $ppid2, "getppid() in a thread is different from the parent on this non-POSIX system");
48 is($pid, $pid2, 'getpid() in a thread is the same as in the parent');
49 is($ppid, $ppid2, 'getppid() in a thread is the same as in the parent');