109 lines
3.3 KiB
Perl
109 lines
3.3 KiB
Perl
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#!./perl
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#####################################################################
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#
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# Test for process id return value from open
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# Ronald Schmidt (The Software Path) RonaldWS@software-path.com
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#
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#####################################################################
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BEGIN {
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chdir 't' if -d 't';
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require './test.pl';
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set_up_inc('../lib');
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}
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if ($^O eq 'dos') {
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skip_all("no multitasking");
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}
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plan tests => 10;
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watchdog(15, $^O eq 'MSWin32' ? "alarm" : '');
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use Config;
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$| = 1;
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$SIG{PIPE} = 'IGNORE';
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# reset the handler in case the shell has set a broken default
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$SIG{HUP} = 'DEFAULT';
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$SIG{HUP} = 'IGNORE' if $^O eq 'interix';
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my $perl = which_perl();
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$perl .= qq[ "-I../lib"];
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my @perl = ( which_perl(), "-I../lib" );
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#
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# commands run 4 perl programs. Two of these programs write a
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# short message to STDOUT and exit. Two of these programs
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# read from STDIN. One reader never exits and must be killed.
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# the other reader reads one line, waits a few seconds and then
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# exits to test the waitpid function.
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#
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# Using 4+ arg open for the children that sleep so that that we're
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# killing the perl process instead of an intermediate shell, this
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# allows harness to see the file handles closed sooner. I didn't
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# convert them all since I wanted 3-arg open to continue to be
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# exercised here.
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#
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# VMS does not have the list form of piped open, but it also would
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# not create a separate process for an intermediate shell.
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if ($^O eq 'VMS') {
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$cmd1 = qq/$perl -e "\$|=1; print qq[first process\\n]; sleep 30;"/;
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$cmd2 = qq/$perl -e "\$|=1; print qq[second process\\n]; sleep 30;"/;
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}
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else {
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@cmd1 = ( @perl, "-e", "\$|=1; print qq[first process\\n]; sleep 30;" );
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@cmd2 = ( @perl, "-e", "\$|=1; print qq[second process\\n]; sleep 30;" );
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}
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$cmd3 = qq/$perl -e "print <>;"/; # hangs waiting for end of STDIN
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$cmd4 = qq/$perl -e "print scalar <>;"/;
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#warn "#@cmd1\n#@cmd2\n#$cmd3\n#$cmd4\n";
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# start the processes
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if ($^O eq 'VMS') {
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ok( $pid1 = open(FH1, "$cmd1 |"), 'first process started');
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ok( $pid2 = open(FH2, "$cmd2 |"), ' second' );
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}
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else {
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ok( $pid1 = open(FH1, "-|", @cmd1), 'first process started');
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ok( $pid2 = open(FH2, "-|", @cmd2), ' second' );
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}
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{
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no warnings 'once';
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ok( $pid3 = open(FH3, "| $cmd3"), ' third' );
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}
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ok( $pid4 = open(FH4, "| $cmd4"), ' fourth' );
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print "# pids were $pid1, $pid2, $pid3, $pid4\n";
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my $killsig = 'HUP';
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$killsig = 1 unless $Config{sig_name} =~ /\bHUP\b/;
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# get message from first process and kill it
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chomp($from_pid1 = scalar(<FH1>));
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is( $from_pid1, 'first process', 'message from first process' );
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$kill_cnt = kill $killsig, $pid1;
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is( $kill_cnt, 1, 'first process killed' ) ||
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print "# errno == $!\n";
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# get message from second process and kill second process and reader process
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chomp($from_pid2 = scalar(<FH2>));
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is( $from_pid2, 'second process', 'message from second process' );
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$kill_cnt = kill $killsig, $pid2, $pid3;
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is( $kill_cnt, 2, 'killing procs 2 & 3' ) ||
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print "# errno == $!\n";
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# send one expected line of text to child process and then wait for it
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select(FH4); $| = 1; select(STDOUT);
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printf FH4 "ok %d - text sent to fourth process\n", curr_test();
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next_test();
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print "# waiting for process $pid4 to exit\n";
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$reap_pid = waitpid $pid4, 0;
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is( $reap_pid, $pid4, 'fourth process reaped' );
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