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 @INC = '../lib'; 13 require './test.pl'; 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$SIG{PIPE} = 'IGNORE'; 26$SIG{HUP} = 'IGNORE' if $^O eq 'interix'; 27 28my $perl = which_perl(); 29$perl .= qq[ "-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$cmd1 = qq/$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 <>;"/; 42 43#warn "#$cmd1\n#$cmd2\n#$cmd3\n#$cmd4\n"; 44 45# start the processes 46ok( $pid1 = open(FH1, "$cmd1 |"), 'first process started'); 47ok( $pid2 = open(FH2, "$cmd2 |"), ' second' ); 48{ 49 no warnings 'once'; 50 ok( $pid3 = open(FH3, "| $cmd3"), ' third' ); 51} 52ok( $pid4 = open(FH4, "| $cmd4"), ' fourth' ); 53 54print "# pids were $pid1, $pid2, $pid3, $pid4\n"; 55 56my $killsig = 'HUP'; 57$killsig = 1 unless $Config{sig_name} =~ /\bHUP\b/; 58 59# get message from first process and kill it 60chomp($from_pid1 = scalar(<FH1>)); 61is( $from_pid1, 'first process', 'message from first process' ); 62 63$kill_cnt = kill $killsig, $pid1; 64is( $kill_cnt, 1, 'first process killed' ) || 65 print "# errno == $!\n"; 66 67# get message from second process and kill second process and reader process 68chomp($from_pid2 = scalar(<FH2>)); 69is( $from_pid2, 'second process', 'message from second process' ); 70 71$kill_cnt = kill $killsig, $pid2, $pid3; 72is( $kill_cnt, 2, 'killing procs 2 & 3' ) || 73 print "# errno == $!\n"; 74 75 76# send one expected line of text to child process and then wait for it 77select(FH4); $| = 1; select(STDOUT); 78 79printf FH4 "ok %d - text sent to fourth process\n", curr_test(); 80next_test(); 81print "# waiting for process $pid4 to exit\n"; 82$reap_pid = waitpid $pid4, 0; 83is( $reap_pid, $pid4, 'fourth process reaped' ); 84 85