X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=t%2Ftest.pl;h=d39c010b308f6f1448cd6e8788897ce95dc7a822;hb=6b8a2794cd62dd8d195b1d5c2699448cfd2be2c8;hp=91daf1ae1b5b046db17e09a604c08439151c31d3;hpb=58d76dfdf30230046d41beb912124c3381ef2bc8;p=p5sagit%2Fp5-mst-13.2.git diff --git a/t/test.pl b/t/test.pl index 91daf1a..d39c010 100644 --- a/t/test.pl +++ b/t/test.pl @@ -1,44 +1,87 @@ # # t/test.pl - most of Test::More functionality without the fuss + + +# NOTE: +# +# Increment ($x++) has a certain amount of cleverness for things like +# +# $x = 'zz'; +# $x++; # $x eq 'aaa'; # +# stands more chance of breaking than just a simple +# +# $x = $x + 1 +# +# In this file, we use the latter "Baby Perl" approach, and increment +# will be worked over by t/op/inc.t +$Level = 1; my $test = 1; my $planned; +my $noplan; +my $Perl; # Safer version of $^X set by which_perl() $TODO = 0; $NO_ENDING = 0; +# Use this instead of print to avoid interference while testing globals. +sub _print { + local($\, $", $,) = (undef, ' ', ''); + print STDOUT @_; +} + +sub _print_stderr { + local($\, $", $,) = (undef, ' ', ''); + print STDERR @_; +} + sub plan { my $n; if (@_ == 1) { $n = shift; + if ($n eq 'no_plan') { + undef $n; + $noplan = 1; + } } else { my %plan = @_; - $n = $plan{tests}; + $n = $plan{tests}; } - print STDOUT "1..$n\n"; + _print "1..$n\n" unless $noplan; $planned = $n; } END { my $ran = $test - 1; - if (!$NO_ENDING && defined $planned && $planned != $ran) { - print STDERR "# Looks like you planned $planned tests but ran $ran.\n"; + if (!$NO_ENDING) { + if (defined $planned && $planned != $ran) { + _print_stderr + "# Looks like you planned $planned tests but ran $ran.\n"; + } elsif ($noplan) { + _print "1..$ran\n"; + } } } -# Use this instead of "print STDERR" when outputing failure diagnostic +# Use this instead of "print STDERR" when outputing failure diagnostic # messages sub _diag { - my $fh = $TODO ? *STDOUT : *STDERR; - print $fh @_; + return unless @_; + my @mess = map { /^#/ ? "$_\n" : "# $_\n" } + map { split /\n/ } @_; + $TODO ? _print(@mess) : _print_stderr(@mess); +} + +sub diag { + _diag(@_); } sub skip_all { if (@_) { - print STDOUT "1..0 - @_\n"; + _print "1..0 # Skip @_\n"; } else { - print STDOUT "1..0\n"; + _print "1..0\n"; } exit(0); } @@ -56,29 +99,28 @@ sub _ok { $out = $pass ? "ok $test" : "not ok $test"; } - $out .= " # TODO $TODO" if $TODO; - print STDOUT "$out\n"; + $out = $out . " # TODO $TODO" if $TODO; + _print "$out\n"; unless ($pass) { _diag "# Failed $where\n"; } # Ensure that the message is properly escaped. - _diag map { /^#/ ? "$_\n" : "# $_\n" } - map { split /\n/ } @mess if @mess; + _diag @mess; - $test++; + $test = $test + 1; # don't use ++ return $pass; } sub _where { - my @caller = caller(1); + my @caller = caller($Level); return "at $caller[1] line $caller[2]"; } # DON'T use this for matches. Use like() instead. -sub ok { +sub ok ($@) { my ($pass, $name, @mess) = @_; _ok($pass, _where(), $name, @mess); } @@ -87,8 +129,8 @@ sub _q { my $x = shift; return 'undef' unless defined $x; my $q = $x; - $q =~ s/\\/\\\\/; - $q =~ s/'/\\'/; + $q =~ s/\\/\\\\/g; + $q =~ s/'/\\'/g; return "'$q'"; } @@ -111,13 +153,22 @@ sub display { my $y = ''; foreach my $c (unpack("U*", $x)) { if ($c > 255) { - $y .= sprintf "\\x{%x}", $c; + $y = $y . sprintf "\\x{%x}", $c; } elsif ($backslash_escape{$c}) { - $y .= $backslash_escape{$c}; + $y = $y . $backslash_escape{$c}; } else { my $z = chr $c; # Maybe we can get away with a literal... - $z = sprintf "\\%03o", $c if $z =~ /[[:^print:]]/; - $y .= $z; + if ($z =~ /[[:^print:]]/) { + + # Use octal for characters traditionally expressed as + # such: the low controls + if ($c <= 037) { + $z = sprintf "\\%03o", $c; + } else { + $z = sprintf "\\x{%x}", $c; + } + } + $y = $y . $z; } } $x = $y; @@ -128,27 +179,45 @@ sub display { return @result; } -sub is { +sub is ($$@) { my ($got, $expected, $name, @mess) = @_; - my $pass = $got eq $expected; + + my $pass; + if( !defined $got || !defined $expected ) { + # undef only matches undef + $pass = !defined $got && !defined $expected; + } + else { + $pass = $got eq $expected; + } + unless ($pass) { - unshift(@mess, "# got "._q($got)."\n", - "# expected "._q($expected)."\n"); + unshift(@mess, "# got "._qq($got)."\n", + "# expected "._qq($expected)."\n"); } _ok($pass, _where(), $name, @mess); } -sub isnt { +sub isnt ($$@) { my ($got, $isnt, $name, @mess) = @_; - my $pass = $got ne $isnt; + + my $pass; + if( !defined $got || !defined $isnt ) { + # undef only matches undef + $pass = defined $got || defined $isnt; + } + else { + $pass = $got ne $isnt; + } + unless( $pass ) { - unshift(@mess, "# it should not be "._q($got)."\n", + unshift(@mess, "# it should not be "._qq($got)."\n", "# but it is.\n"); } _ok($pass, _where(), $name, @mess); } -sub cmp_ok { +sub cmp_ok ($$$@) { my($got, $type, $expected, $name, @mess) = @_; my $pass; @@ -169,8 +238,8 @@ sub cmp_ok { if ($got eq $expected and $type !~ tr/a-z//) { unshift @mess, "# $got - $expected = " . ($got - $expected) . "\n"; } - unshift(@mess, "# got "._q($got)."\n", - "# expected $type "._q($expected)."\n"); + unshift(@mess, "# got "._qq($got)."\n", + "# expected $type "._qq($expected)."\n"); } _ok($pass, _where(), $name, @mess); } @@ -181,7 +250,7 @@ sub cmp_ok { # otherwise $range is a fractional error. # Here $range must be numeric, >= 0 # Non numeric ranges might be a useful future extension. (eg %) -sub within { +sub within ($$$@) { my ($got, $expected, $range, $name, @mess) = @_; my $pass; if (!defined $got or !defined $expected or !defined $range) { @@ -206,29 +275,28 @@ sub within { if ($got eq $expected) { unshift @mess, "# $got - $expected = " . ($got - $expected) . "\n"; } - unshift@mess, "# got "._q($got)."\n", - "# expected "._q($expected)." (within "._q($range).")\n"; + unshift@mess, "# got "._qq($got)."\n", + "# expected "._qq($expected)." (within "._qq($range).")\n"; } _ok($pass, _where(), $name, @mess); } # Note: this isn't quite as fancy as Test::More::like(). -sub like { - my ($got, $expected, $name, @mess) = @_; + +sub like ($$@) { like_yn (0,@_) }; # 0 for - +sub unlike ($$@) { like_yn (1,@_) }; # 1 for un- + +sub like_yn ($$$@) { + my ($flip, $got, $expected, $name, @mess) = @_; my $pass; - if (ref $expected eq 'Regexp') { - $pass = $got =~ $expected; - unless ($pass) { - unshift(@mess, "# got '$got'\n", - "# expected /$expected/\n"); - } - } else { - $pass = $got =~ /$expected/; - unless ($pass) { - unshift(@mess, "# got '$got'\n", - "# expected /$expected/\n"); - } + $pass = $got =~ /$expected/ if !$flip; + $pass = $got !~ /$expected/ if $flip; + unless ($pass) { + unshift(@mess, "# got '$got'\n", + $flip + ? "# expected !~ /$expected/\n" : "# expected /$expected/\n"); } + local $Level = $Level + 1; _ok($pass, _where(), $name, @mess); } @@ -241,11 +309,14 @@ sub fail { } sub curr_test { + $test = shift if @_; return $test; } sub next_test { - $test++ + my $retval = $test; + $test = $test + 1; # don't use ++ + $retval; } # Note: can't pass multipart messages since we try to @@ -254,17 +325,32 @@ sub skip { my $why = shift; my $n = @_ ? shift : 1; for (1..$n) { - print STDOUT "ok $test # skip: $why\n"; - $test++; + _print "ok $test # skip $why\n"; + $test = $test + 1; } local $^W = 0; last SKIP; } +sub todo_skip { + my $why = shift; + my $n = @_ ? shift : 1; + + for (1..$n) { + _print "not ok $test # TODO & SKIP $why\n"; + $test = $test + 1; + } + local $^W = 0; + last TODO; +} + sub eq_array { my ($ra, $rb) = @_; return 0 unless $#$ra == $#$rb; for my $i (0..$#$ra) { + next if !defined $ra->[$i] && !defined $rb->[$i]; + return 0 if !defined $ra->[$i]; + return 0 if !defined $rb->[$i]; return 0 unless $ra->[$i] eq $rb->[$i]; } return 1; @@ -278,12 +364,12 @@ sub eq_hash { $key = "" . $key; if (exists $orig->{$key}) { if ($orig->{$key} ne $value) { - print STDOUT "# key ", _qq($key), " was ", _qq($orig->{$key}), + _print "# key ", _qq($key), " was ", _qq($orig->{$key}), " now ", _qq($value), "\n"; $fail = 1; } } else { - print STDOUT "# key ", _qq($key), " is ", _qq($value), + _print "# key ", _qq($key), " is ", _qq($value), ", not in original.\n"; $fail = 1; } @@ -292,13 +378,13 @@ sub eq_hash { # Force a hash recompute if this perl's internals can cache the hash key. $_ = "" . $_; next if (exists $suspect->{$_}); - print STDOUT "# key ", _qq($_), " was ", _qq($orig->{$_}), " now missing.\n"; + _print "# key ", _qq($_), " was ", _qq($orig->{$_}), " now missing.\n"; $fail = 1; } !$fail; } -sub require_ok { +sub require_ok ($) { my ($require) = @_; eval < [ command-line switches ] # nolib => 1 # don't use -I../lib (included by default) # prog => one-liner (avoid quotes) +# progs => [ multi-liner (avoid quotes) ] # progfile => perl script # stdin => string to feed the stdin # stderr => redirect stderr to stdout @@ -327,8 +414,8 @@ USE_OK my $is_mswin = $^O eq 'MSWin32'; my $is_netware = $^O eq 'NetWare'; -my $is_macos = $^O eq 'MacOS'; my $is_vms = $^O eq 'VMS'; +my $is_cygwin = $^O eq 'cygwin'; sub _quote_args { my ($runperl, $args) = @_; @@ -337,96 +424,157 @@ sub _quote_args { # In VMS protect with doublequotes because otherwise # DCL will lowercase -- unless already doublequoted. $_ = q(").$_.q(") if $is_vms && !/^\"/ && length($_) > 0; - $$runperl .= ' ' . $_; + $runperl = $runperl . ' ' . $_; } + return $runperl; } -sub runperl { +sub _create_runperl { # Create the string to qx in runperl(). my %args = @_; - my $runperl = $^X; - if ($args{switches}) { - _quote_args(\$runperl, $args{switches}); + my $runperl = which_perl(); + if ($runperl =~ m/\s/) { + $runperl = qq{"$runperl"}; + } + #- this allows, for example, to set PERL_RUNPERL_DEBUG=/usr/bin/valgrind + if ($ENV{PERL_RUNPERL_DEBUG}) { + $runperl = "$ENV{PERL_RUNPERL_DEBUG} $runperl"; } unless ($args{nolib}) { - if ($is_macos) { - $runperl .= ' -I::lib'; - # Use UNIX style error messages instead of MPW style. - $runperl .= ' -MMac::err=unix' if $args{stderr}; - } - else { - $runperl .= ' "-I../lib"'; # doublequotes because of VMS - } + $runperl = $runperl . ' "-I../lib"'; # doublequotes because of VMS + } + if ($args{switches}) { + local $Level = 2; + die "test.pl:runperl(): 'switches' must be an ARRAYREF " . _where() + unless ref $args{switches} eq "ARRAY"; + $runperl = _quote_args($runperl, $args{switches}); } if (defined $args{prog}) { - if ($is_mswin || $is_netware || $is_vms) { - $runperl .= qq( -e ") . $args{prog} . qq("); - } - else { - $runperl .= qq( -e ') . $args{prog} . qq('); - } + die "test.pl:runperl(): both 'prog' and 'progs' cannot be used " . _where() + if defined $args{progs}; + $args{progs} = [$args{prog}] + } + if (defined $args{progs}) { + die "test.pl:runperl(): 'progs' must be an ARRAYREF " . _where() + unless ref $args{progs} eq "ARRAY"; + foreach my $prog (@{$args{progs}}) { + if ($is_mswin || $is_netware || $is_vms) { + $runperl = $runperl . qq ( -e "$prog" ); + } + else { + $runperl = $runperl . qq ( -e '$prog' ); + } + } } elsif (defined $args{progfile}) { - $runperl .= qq( "$args{progfile}"); + $runperl = $runperl . qq( "$args{progfile}"); + } else { + # You probaby didn't want to be sucking in from the upstream stdin + die "test.pl:runperl(): none of prog, progs, progfile, args, " + . " switches or stdin specified" + unless defined $args{args} or defined $args{switches} + or defined $args{stdin}; } if (defined $args{stdin}) { - # so we don't try to put literal newlines and crs onto the - # command line. - $args{stdin} =~ s/\n/\\n/g; - $args{stdin} =~ s/\r/\\r/g; + # so we don't try to put literal newlines and crs onto the + # command line. + $args{stdin} =~ s/\n/\\n/g; + $args{stdin} =~ s/\r/\\r/g; if ($is_mswin || $is_netware || $is_vms) { - $runperl = qq{$^X -e "print qq(} . + $runperl = qq{$Perl -e "print qq(} . $args{stdin} . q{)" | } . $runperl; } else { - $runperl = qq{$^X -e 'print qq(} . + $runperl = qq{$Perl -e 'print qq(} . $args{stdin} . q{)' | } . $runperl; } } if (defined $args{args}) { - _quote_args(\$runperl, $args{args}); + $runperl = _quote_args($runperl, $args{args}); } - $runperl .= ' 2>&1' if $args{stderr} && !$is_macos; - $runperl .= " \xB3 Dev:Null" if !$args{stderr} && $is_macos; + $runperl = $runperl . ' 2>&1' if $args{stderr}; if ($args{verbose}) { my $runperldisplay = $runperl; $runperldisplay =~ s/\n/\n\#/g; - print STDERR "# $runperldisplay\n"; + _print_stderr "# $runperldisplay\n"; + } + return $runperl; +} + +sub runperl { + die "test.pl:runperl() does not take a hashref" + if ref $_[0] and ref $_[0] eq 'HASH'; + my $runperl = &_create_runperl; + my $result; + + my $tainted = ${^TAINT}; + my %args = @_; + exists $args{switches} && grep m/^-T$/, @{$args{switches}} and $tainted = $tainted + 1; + + if ($tainted) { + # We will assume that if you're running under -T, you really mean to + # run a fresh perl, so we'll brute force launder everything for you + my $sep; + + if (! eval 'require Config; 1') { + warn "test.pl had problems loading Config: $@"; + $sep = ':'; + } else { + $sep = $Config::Config{path_sep}; + } + + my @keys = grep {exists $ENV{$_}} qw(CDPATH IFS ENV BASH_ENV); + local @ENV{@keys} = (); + # Untaint, plus take out . and empty string: + local $ENV{'DCL$PATH'} = $1 if $is_vms && exists($ENV{'DCL$PATH'}) && ($ENV{'DCL$PATH'} =~ /(.*)/s); + $ENV{PATH} =~ /(.*)/s; + local $ENV{PATH} = + join $sep, grep { $_ ne "" and $_ ne "." and -d $_ and + ($is_mswin or $is_vms or !(stat && (stat _)[2]&0022)) } + split quotemeta ($sep), $1; + $ENV{PATH} = $ENV{PATH} . "$sep/bin" if $is_cygwin; # Must have /bin under Cygwin + + $runperl =~ /(.*)/s; + $runperl = $1; + + $result = `$runperl`; + } else { + $result = `$runperl`; } - my $result = `$runperl`; $result =~ s/\n\n/\n/ if $is_vms; # XXX pipes sometimes double these return $result; } +*run_perl = \&runperl; # Nice alias. sub DIE { - print STDERR "# @_\n"; + _print_stderr "# @_\n"; exit 1; } # A somewhat safer version of the sometimes wrong $^X. -my $Perl; sub which_perl { unless (defined $Perl) { $Perl = $^X; - + + # VMS should have 'perl' aliased properly + return $Perl if $^O eq 'VMS'; + my $exe; - eval "require Config; Config->import"; - if ($@) { + if (! eval 'require Config; 1') { warn "test.pl had problems loading Config: $@"; $exe = ''; } else { - $exe = $Config{_exe}; + $exe = $Config::Config{_exe}; } $exe = '' unless defined $exe; - + # This doesn't absolutize the path: beware of future chdirs(). # We could do File::Spec->abs2rel() but that does getcwd()s, # which is a bit heavyweight to do here. - + if ($Perl =~ /^perl\Q$exe\E$/i) { my $perl = "perl$exe"; - eval "require File::Spec"; - if ($@) { + if (! eval 'require File::Spec; 1') { warn "test.pl had problems loading File::Spec: $@"; $Perl = "./$perl"; } else { @@ -438,11 +586,11 @@ sub which_perl { # the command. if ($Perl !~ /\Q$exe\E$/i) { - $Perl .= $exe; + $Perl = $Perl . $exe; } warn "which_perl: cannot find $Perl from $^X" unless -f $Perl; - + # For subcommands to use. $ENV{PERLEXE} = $Perl; } @@ -452,14 +600,41 @@ sub which_perl { sub unlink_all { foreach my $file (@_) { 1 while unlink $file; - print STDERR "# Couldn't unlink '$file': $!\n" if -f $file; + _print_stderr "# Couldn't unlink '$file': $!\n" if -f $file; } } +my %tmpfiles; +END { unlink_all keys %tmpfiles } + +# A regexp that matches the tempfile names +$::tempfile_regexp = 'tmp\d+[A-Z][A-Z]?'; + +# Avoid ++, avoid ranges, avoid split // +my @letters = qw(A B C D E F G H I J K L M N O P Q R S T U V W X Y Z); +sub tempfile { + my $count = 0; + do { + my $temp = $count; + my $try = "tmp$$"; + do { + $try = $try . $letters[$temp % 26]; + $temp = int ($temp / 26); + } while $temp; + # Need to note all the file names we allocated, as a second request may + # come before the first is created. + if (!-e $try && !$tmpfiles{$try}) { + # We have a winner + $tmpfiles{$try} = 1; + return $try; + } + $count = $count + 1; + } while $count < 26 * 26; + die "Can't find temporary file name starting 'tmp$$'"; +} -my $tmpfile = "misctmp000"; -1 while -f ++$tmpfile; -END { unlink_all $tmpfile } +# This is the temporary file for _fresh_perl +my $tmpfile = tempfile(); # # _fresh_perl @@ -472,7 +647,14 @@ END { unlink_all $tmpfile } sub _fresh_perl { my($prog, $resolve, $runperl_args, $name) = @_; - $runperl_args ||= {}; + # Given the choice of the mis-parsable {} + # (we want an anon hash, but a borked lexer might think that it's a block) + # or relying on taking a reference to a lexical + # (\ might be mis-parsed, and the reference counting on the pad may go + # awry) + # it feels like the least-worse thing is to assume that auto-vivification + # works. At least, this is only going to be a run-time failure, so won't + # affect tests using this file but not this function. $runperl_args->{progfile} = $tmpfile; $runperl_args->{stderr} = 1; @@ -482,21 +664,21 @@ sub _fresh_perl { if( $^O eq 'VMS' ) { $prog =~ s#/dev/null#NL:#; - # VMS file locking + # VMS file locking $prog =~ s{if \(-e _ and -f _ and -r _\)} {if (-e _ and -f _)} } - print TEST $prog, "\n"; + print TEST $prog; close TEST or die "Cannot close $tmpfile: $!"; my $results = runperl(%$runperl_args); my $status = $?; # Clean up the results into something a bit more predictable. - $results =~ s/\n+$//; - $results =~ s/at\s+misctmp\d+\s+line/at - line/g; - $results =~ s/of\s+misctmp\d+\s+aborted/of - aborted/g; + $results =~ s/\n+$//; + $results =~ s/at\s+$::tempfile_regexp\s+line/at - line/g; + $results =~ s/of\s+$::tempfile_regexp\s+aborted/of - aborted/g; # bison says 'parse error' instead of 'syntax error', # various yaccs may or may not capitalize 'syntax'. @@ -512,47 +694,245 @@ sub _fresh_perl { my $pass = $resolve->($results); unless ($pass) { - print STDERR "# PROG: $switch\n$prog\n"; - print STDERR "# EXPECTED:\n", $resolve->(), "\n"; - print STDERR "# GOT:\n$results\n"; - print STDERR "# STATUS: $status\n"; + _diag "# PROG: \n$prog\n"; + _diag "# EXPECTED:\n", $resolve->(), "\n"; + _diag "# GOT:\n$results\n"; + _diag "# STATUS: $status\n"; } # Use the first line of the program as a name if none was given unless( $name ) { ($first_line, $name) = $prog =~ /^((.{1,50}).*)/; - $name .= '...' if length $first_line > length $name; + $name = $name . '...' if length $first_line > length $name; } _ok($pass, _where(), "fresh_perl - $name"); } # -# run_perl_is +# fresh_perl_is # # Combination of run_perl() and is(). # sub fresh_perl_is { my($prog, $expected, $runperl_args, $name) = @_; + + # _fresh_perl() is going to clip the trailing newlines off the result. + # This will make it so the test author doesn't have to know that. + $expected =~ s/\n+$//; + + local $Level = 2; _fresh_perl($prog, sub { @_ ? $_[0] eq $expected : $expected }, $runperl_args, $name); } # -# run_perl_like +# fresh_perl_like # # Combination of run_perl() and like(). # sub fresh_perl_like { my($prog, $expected, $runperl_args, $name) = @_; + local $Level = 2; _fresh_perl($prog, - sub { @_ ? - $_[0] =~ (ref $expected ? $expected : /$expected/) : - $expected }, + sub { @_ ? $_[0] =~ $expected : $expected }, $runperl_args, $name); } +sub can_ok ($@) { + my($proto, @methods) = @_; + my $class = ref $proto || $proto; + + unless( @methods ) { + return _ok( 0, _where(), "$class->can(...)" ); + } + + my @nok = (); + foreach my $method (@methods) { + local($!, $@); # don't interfere with caller's $@ + # eval sometimes resets $! + eval { $proto->can($method) } || push @nok, $method; + } + + my $name; + $name = @methods == 1 ? "$class->can('$methods[0]')" + : "$class->can(...)"; + + _ok( !@nok, _where(), $name ); +} + +sub isa_ok ($$;$) { + my($object, $class, $obj_name) = @_; + + my $diag; + $obj_name = 'The object' unless defined $obj_name; + my $name = "$obj_name isa $class"; + if( !defined $object ) { + $diag = "$obj_name isn't defined"; + } + elsif( !ref $object ) { + $diag = "$obj_name isn't a reference"; + } + else { + # We can't use UNIVERSAL::isa because we want to honor isa() overrides + local($@, $!); # eval sometimes resets $! + my $rslt = eval { $object->isa($class) }; + if( $@ ) { + if( $@ =~ /^Can't call method "isa" on unblessed reference/ ) { + if( !UNIVERSAL::isa($object, $class) ) { + my $ref = ref $object; + $diag = "$obj_name isn't a '$class' it's a '$ref'"; + } + } else { + die <isa on your object and got some weird error. +This should never happen. Please contact the author immediately. +Here's the error. +$@ +WHOA + } + } + elsif( !$rslt ) { + my $ref = ref $object; + $diag = "$obj_name isn't a '$class' it's a '$ref'"; + } + } + + _ok( !$diag, _where(), $name ); +} + +# Set a watchdog to timeout the entire test file +# NOTE: If the test file uses 'threads', then call the watchdog() function +# _AFTER_ the 'threads' module is loaded. +sub watchdog ($) +{ + my $timeout = shift; + my $timeout_msg = 'Test process timed out - terminating'; + + my $pid_to_kill = $$; # PID for this process + + # Don't use a watchdog process if 'threads' is loaded - + # use a watchdog thread instead + if (! $threads::threads) { + + # On Windows and VMS, try launching a watchdog process + # using system(1, ...) (see perlport.pod) + if (($^O eq 'MSWin32') || ($^O eq 'VMS')) { + # On Windows, try to get the 'real' PID + if ($^O eq 'MSWin32') { + eval { require Win32; }; + if (defined(&Win32::GetCurrentProcessId)) { + $pid_to_kill = Win32::GetCurrentProcessId(); + } + } + + # If we still have a fake PID, we can't use this method at all + return if ($pid_to_kill <= 0); + + # Launch watchdog process + my $watchdog; + eval { + local $SIG{'__WARN__'} = sub { + _diag("Watchdog warning: $_[0]"); + }; + my $sig = $^O eq 'VMS' ? 'TERM' : 'KILL'; + my $cmd = _create_runperl( prog => "sleep($timeout);" . + "warn qq/# $timeout_msg" . '\n/;' . + "kill($sig, $pid_to_kill);"); + $watchdog = system(1, $cmd); + }; + if ($@ || ($watchdog <= 0)) { + _diag('Failed to start watchdog'); + _diag($@) if $@; + undef($watchdog); + return; + } + + # Add END block to parent to terminate and + # clean up watchdog process + eval "END { local \$! = 0; local \$? = 0; + wait() if kill('KILL', $watchdog); };"; + return; + } + + # Try using fork() to generate a watchdog process + my $watchdog; + eval { $watchdog = fork() }; + if (defined($watchdog)) { + if ($watchdog) { # Parent process + # Add END block to parent to terminate and + # clean up watchdog process + eval "END { local \$! = 0; local \$? = 0; + wait() if kill('KILL', $watchdog); };"; + return; + } + + ### Watchdog process code + + # Load POSIX if available + eval { require POSIX; }; + + # Execute the timeout + sleep($timeout - 2) if ($timeout > 2); # Workaround for perlbug #49073 + sleep(2); + + # Kill test process if still running + if (kill(0, $pid_to_kill)) { + _diag($timeout_msg); + kill('KILL', $pid_to_kill); + } + + # Don't execute END block (added at beginning of this file) + $NO_ENDING = 1; + + # Terminate ourself (i.e., the watchdog) + POSIX::_exit(1) if (defined(&POSIX::_exit)); + exit(1); + } + + # fork() failed - fall through and try using a thread + } + + # Use a watchdog thread because either 'threads' is loaded, + # or fork() failed + if (eval 'require threads; 1') { + threads->create(sub { + # Load POSIX if available + eval { require POSIX; }; + + # Execute the timeout + my $time_left = $timeout; + do { + $time_left = $time_left - sleep($time_left); + } while ($time_left > 0); + + # Kill the parent (and ourself) + select(STDERR); $| = 1; + _diag($timeout_msg); + POSIX::_exit(1) if (defined(&POSIX::_exit)); + my $sig = $^O eq 'VMS' ? 'TERM' : 'KILL'; + kill($sig, $pid_to_kill); + })->detach(); + return; + } + + # If everything above fails, then just use an alarm timeout + if (eval { alarm($timeout); 1; }) { + # Load POSIX if available + eval { require POSIX; }; + + # Alarm handler will do the actual 'killing' + $SIG{'ALRM'} = sub { + select(STDERR); $| = 1; + _diag($timeout_msg); + POSIX::_exit(1) if (defined(&POSIX::_exit)); + my $sig = $^O eq 'VMS' ? 'TERM' : 'KILL'; + kill($sig, $pid_to_kill); + }; + } +} + 1;