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 16plan tests => 10; 17watchdog(15, $^O eq 'MSWin32' ? "alarm" : ''); 18 19use Config; 20$| = 1; 21$SIG{PIPE} = 'IGNORE'; 22# reset the handler in case the shell has set a broken default 23$SIG{HUP} = 'DEFAULT'; 24$SIG{HUP} = 'IGNORE' if $^O eq 'interix'; 25 26my $perl = which_perl(); 27$perl .= qq[ "-I../lib"]; 28 29my @perl = ( which_perl(), "-I../lib" ); 30 31# 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. 37# 38# Using 4+ arg open for the children that sleep so that we're 39# killing the perl process instead of an intermediate shell, this 40# allows harness to see the file handles closed sooner. I didn't 41# convert them all since I wanted 3-arg open to continue to be 42# exercised here. 43# 44# VMS does not have the list form of piped open, but it also would 45# not create a separate process for an intermediate shell. 46if ($^O eq 'VMS') { 47 $cmd1 = qq/$perl -e "\$|=1; print qq[first process\\n]; sleep 30;"/; 48 $cmd2 = qq/$perl -e "\$|=1; print qq[second process\\n]; sleep 30;"/; 49} 50else { 51 @cmd1 = ( @perl, "-e", "\$|=1; print qq[first process\\n]; sleep 30;" ); 52 @cmd2 = ( @perl, "-e", "\$|=1; print qq[second process\\n]; sleep 30;" ); 53} 54$cmd3 = qq/$perl -e "print <>;"/; # hangs waiting for end of STDIN 55$cmd4 = qq/$perl -e "print scalar <>;"/; 56 57#warn "#@cmd1\n#@cmd2\n#$cmd3\n#$cmd4\n"; 58 59# start the processes 60if ($^O eq 'VMS') { 61 ok( $pid1 = open(FH1, "$cmd1 |"), 'first process started'); 62 ok( $pid2 = open(FH2, "$cmd2 |"), ' second' ); 63} 64else { 65 ok( $pid1 = open(FH1, "-|", @cmd1), 'first process started'); 66 ok( $pid2 = open(FH2, "-|", @cmd2), ' second' ); 67} 68{ 69 no warnings 'once'; 70 ok( $pid3 = open(FH3, "| $cmd3"), ' third' ); 71} 72ok( $pid4 = open(FH4, "| $cmd4"), ' fourth' ); 73 74print "# pids were $pid1, $pid2, $pid3, $pid4\n"; 75 76my $killsig = 'HUP'; 77$killsig = 1 unless $Config{sig_name} =~ /\bHUP\b/; 78 79# get message from first process and kill it 80chomp($from_pid1 = scalar(<FH1>)); 81is( $from_pid1, 'first process', 'message from first process' ); 82 83$kill_cnt = kill $killsig, $pid1; 84is( $kill_cnt, 1, 'first process killed' ) || 85 print "# errno == $!\n"; 86 87# get message from second process and kill second process and reader process 88chomp($from_pid2 = scalar(<FH2>)); 89is( $from_pid2, 'second process', 'message from second process' ); 90 91$kill_cnt = kill $killsig, $pid2, $pid3; 92is( $kill_cnt, 2, 'killing procs 2 & 3' ) || 93 print "# errno == $!\n"; 94 95 96# send one expected line of text to child process and then wait for it 97select(FH4); $| = 1; select(STDOUT); 98 99printf FH4 "ok %d - text sent to fourth process\n", curr_test(); 100next_test(); 101print "# waiting for process $pid4 to exit\n"; 102$reap_pid = waitpid $pid4, 0; 103is( $reap_pid, $pid4, 'fourth process reaped' ); 104 105