1#!perl -w 2 3# Tests if $$ and getppid return consistent values across threads 4 5BEGIN { 6 chdir 't' if -d 't'; 7 @INC = qw(../lib); 8 require './test.pl'; 9} 10 11use strict; 12use Config; 13 14BEGIN { 15 skip_all_without_config(qw(useithreads d_getppid)); 16 skip_all_if_miniperl("no dynamic loading on miniperl, no threads"); 17 eval 'use threads; use threads::shared'; 18 plan tests => 3; 19 if ($@) { 20 fail("unable to load thread modules"); 21 } 22 else { 23 pass("thread modules loaded"); 24 } 25} 26 27my ($pid, $ppid) = ($$, getppid()); 28my $pid2 : shared = 0; 29my $ppid2 : shared = 0; 30 31new threads( sub { ($pid2, $ppid2) = ($$, getppid()); } ) -> join(); 32 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 35# semantics. 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> 39my $thread_version = qx[getconf GNU_LIBPTHREAD_VERSION 2>&1] // ''; 40chomp $thread_version; 41if ($^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, $ppid2, "getppid() in a thread is different from the parent on this non-POSIX system"); 47} else { 48 is($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'); 50} 51