Commit | Line | Data |
---|---|---|
a43cb6b7 BS |
1 | #!./perl |
2 | ||
3 | BEGIN { | |
4 | chdir 't' if -d 't'; | |
5 | @INC = '../lib'; | |
6 | } | |
7 | ||
8 | # Script to test auto flush on fork/exec/system/qx. The idea is to | |
9 | # print "Pe" to a file from a parent process and "rl" to the same file | |
10 | # from a child process. If buffers are flushed appropriately, the | |
11 | # file should contain "Perl". We'll see... | |
12 | use Config; | |
13 | use warnings; | |
14 | use strict; | |
15 | ||
16 | # This attempts to mirror the #ifdef forest found in perl.h so that we | |
17 | # know when to run these tests. If that forest ever changes, change | |
18 | # it here too or expect test gratuitous test failures. | |
19 | if ($Config{useperlio} || $Config{fflushNULL} || $Config{d_sfio}) { | |
20 | print "1..4\n"; | |
21 | } else { | |
22 | if ($Config{fflushall}) { | |
23 | print "1..4\n"; | |
24 | } else { | |
25 | print "1..0 # Skip: fflush(NULL) or equivalent not available\n"; | |
26 | exit; | |
27 | } | |
28 | } | |
29 | ||
30 | my $runperl = qq{$^X "-I../lib"}; | |
31 | my @delete; | |
32 | ||
33 | END { | |
34 | for (@delete) { | |
35 | unlink $_ or warn "unlink $_: $!"; | |
36 | } | |
37 | } | |
38 | ||
39 | sub file_eq { | |
40 | my $f = shift; | |
41 | my $val = shift; | |
42 | ||
43 | open IN, $f or die "open $f: $!"; | |
44 | chomp(my $line = <IN>); | |
45 | close IN; | |
46 | ||
47 | print "# got $line\n"; | |
48 | print "# expected $val\n"; | |
49 | return $line eq $val; | |
50 | } | |
51 | ||
52 | # This script will be used as the command to execute from | |
53 | # child processes | |
54 | open PROG, "> ff-prog" or die "open ff-prog: $!"; | |
55 | print PROG <<'EOF'; | |
56 | my $f = shift; | |
57 | my $str = shift; | |
58 | open OUT, ">> $f" or die "open $f: $!"; | |
59 | print OUT $str; | |
60 | close OUT; | |
61 | EOF | |
62 | ; | |
63 | close PROG; | |
64 | push @delete, "ff-prog"; | |
65 | ||
66 | $| = 0; # we want buffered output | |
67 | ||
68 | # Test flush on fork/exec | |
69 | if ($Config{d_fork} ne "define") { | |
70 | print "ok 1 # skipped: no fork\n"; | |
71 | } else { | |
72 | my $f = "ff-fork-$$"; | |
73 | open OUT, "> $f" or die "open $f: $!"; | |
74 | print OUT "Pe"; | |
75 | my $pid = fork; | |
76 | if ($pid) { | |
77 | # Parent | |
78 | wait; | |
79 | close OUT or die "close $f: $!"; | |
80 | } elsif (defined $pid) { | |
81 | # Kid | |
82 | print OUT "r"; | |
83 | my $command = qq{$runperl "ff-prog" "$f" "l"}; | |
84 | print "# $command\n"; | |
85 | exec $command or die $!; | |
86 | exit; | |
87 | } else { | |
88 | # Bang | |
89 | die "fork: $!"; | |
90 | } | |
91 | ||
92 | print file_eq($f, "Perl") ? "ok 1\n" : "not ok 1\n"; | |
93 | push @delete, $f; | |
94 | } | |
95 | ||
96 | # Test flush on system/qx/pipe open | |
97 | my %subs = ( | |
98 | "system" => sub { | |
99 | my $c = shift; | |
100 | system $c; | |
101 | }, | |
102 | "qx" => sub { | |
103 | my $c = shift; | |
104 | qx{$c}; | |
105 | }, | |
106 | "popen" => sub { | |
107 | my $c = shift; | |
108 | open PIPE, "$c|" or die "$c: $!"; | |
109 | close PIPE; | |
110 | }, | |
111 | ); | |
112 | my $t = 2; | |
113 | for (qw(system qx popen)) { | |
114 | my $code = $subs{$_}; | |
115 | my $f = "ff-$_-$$"; | |
116 | my $command = qq{$runperl "ff-prog" "$f" "rl"}; | |
117 | open OUT, "> $f" or die "open $f: $!"; | |
118 | print OUT "Pe"; | |
119 | print "# $command\n"; | |
120 | $code->($command); | |
121 | close OUT; | |
122 | print file_eq($f, "Perl") ? "ok $t\n" : "not ok $t\n"; | |
123 | push @delete, $f; | |
124 | ++$t; | |
125 | } |