1#!./perl 2 3##################################################################### 4# 5# Test for process id return value from open 6# Ronald Schmidt (The Software Path) RonaldWS@software-path.com 7# 8##################################################################### 9 10BEGIN { 11 chdir 't' if -d 't'; 12 require './test.pl'; 13 set_up_inc('../lib'); 14} 15 16if ($^O eq 'dos') { 17 skip_all("no multitasking"); 18} 19 20plan tests => 10; 21watchdog(15, $^O eq 'MSWin32' ? "alarm" : ''); 22 23use Config; 24$| = 1; 25$SIG{PIPE} = 'IGNORE'; 26# reset the handler in case the shell has set a broken default 27$SIG{HUP} = 'DEFAULT'; 28$SIG{HUP} = 'IGNORE' if $^O eq 'interix'; 29 30my $perl = which_perl(); 31$perl .= qq[ "-I../lib"]; 32 33my @perl = ( which_perl(), "-I../lib" ); 34 35# 36# commands run 4 perl programs. Two of these programs write a 37# short message to STDOUT and exit. Two of these programs 38# read from STDIN. One reader never exits and must be killed. 39# the other reader reads one line, waits a few seconds and then 40# exits to test the waitpid function. 41# 42# Using 4+ arg open for the children that sleep so that that we're 43# killing the perl process instead of an intermediate shell, this 44# allows harness to see the file handles closed sooner. I didn't 45# convert them all since I wanted 3-arg open to continue to be 46# exercised here. 47# 48# VMS does not have the list form of piped open, but it also would 49# not create a separate process for an intermediate shell. 50if ($^O eq 'VMS') { 51 $cmd1 = qq/$perl -e "\$|=1; print qq[first process\\n]; sleep 30;"/; 52 $cmd2 = qq/$perl -e "\$|=1; print qq[second process\\n]; sleep 30;"/; 53} 54else { 55 @cmd1 = ( @perl, "-e", "\$|=1; print qq[first process\\n]; sleep 30;" ); 56 @cmd2 = ( @perl, "-e", "\$|=1; print qq[second process\\n]; sleep 30;" ); 57} 58$cmd3 = qq/$perl -e "print <>;"/; # hangs waiting for end of STDIN 59$cmd4 = qq/$perl -e "print scalar <>;"/; 60 61#warn "#@cmd1\n#@cmd2\n#$cmd3\n#$cmd4\n"; 62 63# start the processes 64if ($^O eq 'VMS') { 65 ok( $pid1 = open(FH1, "$cmd1 |"), 'first process started'); 66 ok( $pid2 = open(FH2, "$cmd2 |"), ' second' ); 67} 68else { 69 ok( $pid1 = open(FH1, "-|", @cmd1), 'first process started'); 70 ok( $pid2 = open(FH2, "-|", @cmd2), ' second' ); 71} 72{ 73 no warnings 'once'; 74 ok( $pid3 = open(FH3, "| $cmd3"), ' third' ); 75} 76ok( $pid4 = open(FH4, "| $cmd4"), ' fourth' ); 77 78print "# pids were $pid1, $pid2, $pid3, $pid4\n"; 79 80my $killsig = 'HUP'; 81$killsig = 1 unless $Config{sig_name} =~ /\bHUP\b/; 82 83# get message from first process and kill it 84chomp($from_pid1 = scalar(<FH1>)); 85is( $from_pid1, 'first process', 'message from first process' ); 86 87$kill_cnt = kill $killsig, $pid1; 88is( $kill_cnt, 1, 'first process killed' ) || 89 print "# errno == $!\n"; 90 91# get message from second process and kill second process and reader process 92chomp($from_pid2 = scalar(<FH2>)); 93is( $from_pid2, 'second process', 'message from second process' ); 94 95$kill_cnt = kill $killsig, $pid2, $pid3; 96is( $kill_cnt, 2, 'killing procs 2 & 3' ) || 97 print "# errno == $!\n"; 98 99 100# send one expected line of text to child process and then wait for it 101select(FH4); $| = 1; select(STDOUT); 102 103printf FH4 "ok %d - text sent to fourth process\n", curr_test(); 104next_test(); 105print "# waiting for process $pid4 to exit\n"; 106$reap_pid = waitpid $pid4, 0; 107is( $reap_pid, $pid4, 'fourth process reaped' ); 108 109