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' || $^O eq 'MacOS') {
17    skip_all("no multitasking");
18}
19
20plan tests => 10;
21
22
23use Config;
24$| = 1;
25$SIG{PIPE} = 'IGNORE';
26
27my $perl = which_perl();
28$perl .= qq[ "-I../lib"];
29
30#
31# commands run 4 perl programs.  Two of these programs write a
32# short message to STDOUT and exit.  Two of these programs
33# read from STDIN.  One reader never exits and must be killed.
34# the other reader reads one line, waits a few seconds and then
35# exits to test the waitpid function.
36#
37$cmd1 = qq/$perl -e "\$|=1; print qq[first process\\n]; sleep 30;"/;
38$cmd2 = qq/$perl -e "\$|=1; print qq[second process\\n]; sleep 30;"/;
39$cmd3 = qq/$perl -e "print <>;"/; # hangs waiting for end of STDIN
40$cmd4 = qq/$perl -e "print scalar <>;"/;
41
42#warn "#$cmd1\n#$cmd2\n#$cmd3\n#$cmd4\n";
43
44# start the processes
45ok( $pid1 = open(FH1, "$cmd1 |"), 'first process started');
46ok( $pid2 = open(FH2, "$cmd2 |"), '    second' );
47ok( $pid3 = open(FH3, "| $cmd3"), '    third'  );
48ok( $pid4 = open(FH4, "| $cmd4"), '    fourth' );
49
50print "# pids were $pid1, $pid2, $pid3, $pid4\n";
51
52my $killsig = 'HUP';
53$killsig = 1 unless $Config{sig_name} =~ /\bHUP\b/;
54
55# get message from first process and kill it
56chomp($from_pid1 = scalar(<FH1>));
57is( $from_pid1, 'first process',    'message from first process' );
58
59$kill_cnt = kill $killsig, $pid1;
60is( $kill_cnt, 1,   'first process killed' ) ||
61  print "# errno == $!\n";
62
63# get message from second process and kill second process and reader process
64chomp($from_pid2 = scalar(<FH2>));
65is( $from_pid2, 'second process',   'message from second process' );
66
67$kill_cnt = kill $killsig, $pid2, $pid3;
68is( $kill_cnt, 2,   'killing procs 2 & 3' ) ||
69  print "# errno == $!\n";
70
71
72# send one expected line of text to child process and then wait for it
73select(FH4); $| = 1; select(STDOUT);
74
75printf FH4 "ok %d - text sent to fourth process\n", curr_test();
76next_test();
77print "# waiting for process $pid4 to exit\n";
78$reap_pid = waitpid $pid4, 0;
79is( $reap_pid, $pid4, 'fourth process reaped' );
80
81