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