3 #####################################################################
5 # Test for process id return value from open
6 # Ronald Schmidt (The Software Path) RonaldWS@software-path.com
8 #####################################################################
12 unshift @INC, '../lib';
14 print "1..0 # Skip: no multitasking\n";
23 $SIG{PIPE} = 'IGNORE';
27 $perl = qq[$^X "-I../lib"];
30 # commands run 4 perl programs. Two of these programs write a
31 # short message to STDOUT and exit. Two of these programs
32 # read from STDIN. One reader never exits and must be killed.
33 # the other reader reads one line, waits a few seconds and then
34 # exits to test the waitpid function.
36 $cmd1 = qq/$perl -e "use FileHandle; autoflush STDOUT 1; / .
37 qq/print qq[first process\\n]; sleep 30;"/;
38 $cmd2 = qq/$perl -e "use FileHandle; autoflush STDOUT 1; / .
39 qq/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 <>;"/;
43 #warn "#$cmd1\n#$cmd2\n#$cmd3\n#$cmd4\n";
46 $pid1 = open(FH1, "$cmd1 |") or print "not ";
48 $pid2 = open(FH2, "$cmd2 |") or print "not ";
50 $pid3 = open(FH3, "| $cmd3") or print "not ";
52 $pid4 = open(FH4, "| $cmd4") or print "not ";
55 print "# pids were $pid1, $pid2, $pid3, $pid4\n";
58 $killsig = 1 unless $Config{sig_name} =~ /\bHUP\b/;
60 # get message from first process and kill it
61 chomp($from_pid1 = scalar(<FH1>));
62 print "# child1 returned [$from_pid1]\nnot "
63 unless $from_pid1 eq 'first process';
65 $kill_cnt = kill $killsig, $pid1;
66 print "not " unless $kill_cnt == 1;
69 # get message from second process and kill second process and reader process
70 chomp($from_pid2 = scalar(<FH2>));
71 print "# child2 returned [$from_pid2]\nnot "
72 unless $from_pid2 eq 'second process';
74 $kill_cnt = kill $killsig, $pid2, $pid3;
75 print "not " unless $kill_cnt == 2;
78 # send one expected line of text to child process and then wait for it
81 print "ok 9 # skip VMS\n" if $^O eq 'VMS';
82 print "# waiting for process $pid4 to exit\n";
83 $reap_pid = waitpid $pid4, 0;
84 print "# reaped pid $reap_pid != $pid4\nnot "
85 unless $reap_pid == $pid4;