3 #####################################################################
5 # Test for process id return value from open
6 # Ronald Schmidt (The Software Path) RonaldWS@software-path.com
8 #####################################################################
17 skip_all("no multitasking");
25 $SIG{PIPE} = 'IGNORE';
26 $SIG{HUP} = 'IGNORE' if $^O eq 'interix';
28 my $perl = which_perl();
29 $perl .= qq[ "-I../lib"];
32 # commands run 4 perl programs. Two of these programs write a
33 # short message to STDOUT and exit. Two of these programs
34 # read from STDIN. One reader never exits and must be killed.
35 # the other reader reads one line, waits a few seconds and then
36 # exits to test the waitpid function.
38 $cmd1 = qq/$perl -e "\$|=1; print qq[first process\\n]; sleep 30;"/;
39 $cmd2 = qq/$perl -e "\$|=1; print qq[second process\\n]; sleep 30;"/;
40 $cmd3 = qq/$perl -e "print <>;"/; # hangs waiting for end of STDIN
41 $cmd4 = qq/$perl -e "print scalar <>;"/;
43 #warn "#$cmd1\n#$cmd2\n#$cmd3\n#$cmd4\n";
46 ok( $pid1 = open(FH1, "$cmd1 |"), 'first process started');
47 ok( $pid2 = open(FH2, "$cmd2 |"), ' second' );
50 ok( $pid3 = open(FH3, "| $cmd3"), ' third' );
52 ok( $pid4 = open(FH4, "| $cmd4"), ' fourth' );
54 print "# pids were $pid1, $pid2, $pid3, $pid4\n";
57 $killsig = 1 unless $Config{sig_name} =~ /\bHUP\b/;
59 # get message from first process and kill it
60 chomp($from_pid1 = scalar(<FH1>));
61 is( $from_pid1, 'first process', 'message from first process' );
63 $kill_cnt = kill $killsig, $pid1;
64 is( $kill_cnt, 1, 'first process killed' ) ||
65 print "# errno == $!\n";
67 # get message from second process and kill second process and reader process
68 chomp($from_pid2 = scalar(<FH2>));
69 is( $from_pid2, 'second process', 'message from second process' );
71 $kill_cnt = kill $killsig, $pid2, $pid3;
72 is( $kill_cnt, 2, 'killing procs 2 & 3' ) ||
73 print "# errno == $!\n";
76 # send one expected line of text to child process and then wait for it
77 select(FH4); $| = 1; select(STDOUT);
79 printf FH4 "ok %d - text sent to fourth process\n", curr_test();
81 print "# waiting for process $pid4 to exit\n";
82 $reap_pid = waitpid $pid4, 0;
83 is( $reap_pid, $pid4, 'fourth process reaped' );