X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/ad20d923779746662bb01e56a1dd24d2ecb02dc2..a6c9a8153fb7a55ac70f2d697cf6020eee8fc5f6:/t/test.pl diff --git a/t/test.pl b/t/test.pl index 5ed6c82..f44e43c 100644 --- a/t/test.pl +++ b/t/test.pl @@ -1,36 +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 (defined $planned && $planned != $ran) { - print STDOUT "# 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..$ran\n"; + } } } +# Use this instead of "print STDERR" when outputing failure diagnostic +# messages +sub _diag { + return unless @_; + my @mess = map { /^#/ ? "$_\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); } @@ -41,33 +92,35 @@ sub _ok { # VMS will avenge. my $out; if ($name) { + # escape out '#' or it will interfere with '# skip' and such + $name =~ s/#/\\#/g; $out = $pass ? "ok $test - $name" : "not ok $test - $name"; } else { $out = $pass ? "ok $test" : "not ok $test"; } $out .= " # TODO $TODO" if $TODO; - print STDOUT "$out\n"; + _print "$out\n"; unless ($pass) { - print STDOUT "# Failed $where\n"; + _diag "# Failed $where\n"; } # Ensure that the message is properly escaped. - print STDOUT map { /^#/ ? "$_\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 $caller[2]"; } -sub ok { +# DON'T use this for matches. Use like() instead. +sub ok ($@) { my ($pass, $name, @mess) = @_; _ok($pass, _where(), $name, @mess); } @@ -76,13 +129,59 @@ sub _q { my $x = shift; return 'undef' unless defined $x; my $q = $x; - $q =~ s/'/\\'/; + $q =~ s/\\/\\\\/g; + $q =~ s/'/\\'/g; return "'$q'"; } -sub is { +sub _qq { + my $x = shift; + return defined $x ? '"' . display ($x) . '"' : 'undef'; +}; + +# keys are the codes \n etc map to, values are 2 char strings such as \n +my %backslash_escape; +foreach my $x (split //, 'nrtfa\\\'"') { + $backslash_escape{ord eval "\"\\$x\""} = "\\$x"; +} +# A way to display scalars containing control characters and Unicode. +# Trying to avoid setting $_, or relying on local $_ to work. +sub display { + my @result; + foreach my $x (@_) { + if (defined $x and not ref $x) { + my $y = ''; + foreach my $c (unpack("U*", $x)) { + if ($c > 255) { + $y .= sprintf "\\x{%x}", $c; + } elsif ($backslash_escape{$c}) { + $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; + } + } + $x = $y; + } + return $x unless wantarray; + push @result, $x; + } + return @result; +} + +sub is ($$@) { my ($got, $expected, $name, @mess) = @_; - my $pass = $got eq $expected; + + my $pass; + if( !defined $got || !defined $expected ) { + # undef only matches undef + $pass = !defined $got && !defined $expected; + } + else { + $pass = $got eq $expected; + } + unless ($pass) { unshift(@mess, "# got "._q($got)."\n", "# expected "._q($expected)."\n"); @@ -90,9 +189,18 @@ sub is { _ok($pass, _where(), $name, @mess); } -sub isnt { +sub isnt ($$@) { 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", "# but it is.\n"); @@ -100,25 +208,89 @@ sub isnt { _ok($pass, _where(), $name, @mess); } -# Note: this isn't quite as fancy as Test::More::like(). -sub like { - my ($got, $expected, $name, @mess) = @_; +sub cmp_ok ($$$@) { + my($got, $type, $expected, $name, @mess) = @_; + my $pass; - if (ref $expected eq 'Regexp') { - $pass = $got =~ $expected; - unless ($pass) { - unshift(@mess, "# got '$got'\n"); - } + { + local $^W = 0; + local($@,$!); # don't interfere with $@ + # eval() sometimes resets $! + $pass = eval "\$got $type \$expected"; + } + unless ($pass) { + # It seems Irix long doubles can have 2147483648 and 2147483648 + # that stringify to the same thing but are acutally numerically + # different. Display the numbers if $type isn't a string operator, + # and the numbers are stringwise the same. + # (all string operators have alphabetic names, so tr/a-z// is true) + # This will also show numbers for some uneeded cases, but will + # definately be helpful for things such as == and <= that fail + if ($got eq $expected and $type !~ tr/a-z//) { + unshift @mess, "# $got - $expected = " . ($got - $expected) . "\n"; + } + unshift(@mess, "# got "._q($got)."\n", + "# expected $type "._q($expected)."\n"); + } + _ok($pass, _where(), $name, @mess); +} + +# Check that $got is within $range of $expected +# if $range is 0, then check it's exact +# else if $expected is 0, then $range is an absolute value +# otherwise $range is a fractional error. +# Here $range must be numeric, >= 0 +# Non numeric ranges might be a useful future extension. (eg %) +sub within ($$$@) { + my ($got, $expected, $range, $name, @mess) = @_; + my $pass; + if (!defined $got or !defined $expected or !defined $range) { + # This is a fail, but doesn't need extra diagnostics + } elsif ($got !~ tr/0-9// or $expected !~ tr/0-9// or $range !~ tr/0-9//) { + # This is a fail + unshift @mess, "# got, expected and range must be numeric\n"; + } elsif ($range < 0) { + # This is also a fail + unshift @mess, "# range must not be negative\n"; + } elsif ($range == 0) { + # Within 0 is == + $pass = $got == $expected; + } elsif ($expected == 0) { + # If expected is 0, treat range as absolute + $pass = ($got <= $range) && ($got >= - $range); } else { - $pass = $got =~ /$expected/; - unless ($pass) { - unshift(@mess, "# got '$got'\n", - "# expected /$expected/\n"); - } + my $diff = $got - $expected; + $pass = abs ($diff / $expected) < $range; + } + unless ($pass) { + if ($got eq $expected) { + unshift @mess, "# $got - $expected = " . ($got - $expected) . "\n"; + } + unshift@mess, "# got "._q($got)."\n", + "# expected "._q($expected)." (within "._q($range).")\n"; } _ok($pass, _where(), $name, @mess); } +# Note: this isn't quite as fancy as Test::More::like(). + +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; + $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); +} + sub pass { _ok(1, '', @_); } @@ -128,11 +300,14 @@ 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 @@ -141,23 +316,66 @@ 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; } -sub require_ok { +sub eq_hash { + my ($orig, $suspect) = @_; + my $fail; + while (my ($key, $value) = each %$suspect) { + # Force a hash recompute if this perl's internals can cache the hash key. + $key = "" . $key; + if (exists $orig->{$key}) { + if ($orig->{$key} ne $value) { + _print "# key ", _qq($key), " was ", _qq($orig->{$key}), + " now ", _qq($value), "\n"; + $fail = 1; + } + } else { + _print "# key ", _qq($key), " is ", _qq($value), + ", not in original.\n"; + $fail = 1; + } + } + foreach (keys %$orig) { + # Force a hash recompute if this perl's internals can cache the hash key. + $_ = "" . $_; + next if (exists $suspect->{$_}); + _print "# key ", _qq($_), " was ", _qq($orig->{$_}), " now missing.\n"; + $fail = 1; + } + !$fail; +} + +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 @@ -188,6 +407,7 @@ 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) = @_; @@ -195,16 +415,20 @@ sub _quote_args { foreach (@$args) { # In VMS protect with doublequotes because otherwise # DCL will lowercase -- unless already doublequoted. - $_ = q(").$_.q(") if $is_vms && !/^\"/; + $_ = q(").$_.q(") if $is_vms && !/^\"/ && length($_) > 0; $$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) { @@ -216,28 +440,62 @@ sub 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"; + _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) { + $runperl .= qq ( -e "$prog" ); + } + else { + $runperl .= qq ( -e '$prog' ); + } + } } elsif (defined $args{progfile}) { $runperl .= qq( "$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{)" | } . $runperl; } + elsif ($is_macos) { + # MacOS can only do two processes under MPW at once; + # the test itself is one; we can't do two more, so + # write to temp file + my $stdin = qq{$Perl -e 'print qq(} . $args{stdin} . qq{)' > teststdin; }; + if ($args{verbose}) { + my $stdindisplay = $stdin; + $stdindisplay =~ s/\n/\n\#/g; + _print_stderr "# $stdindisplay\n"; + } + `$stdin`; + $runperl .= q{ < teststdin }; + } else { - $runperl = qq{$^X -e 'print qq(} . + $runperl = qq{$Perl -e 'print qq(} . $args{stdin} . q{)' | } . $runperl; } } @@ -249,18 +507,437 @@ sub runperl { if ($args{verbose}) { my $runperldisplay = $runperl; $runperldisplay =~ s/\n/\n\#/g; - print STDOUT "# $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 $sep; + + eval "require Config; Config->import"; + if ($@) { + warn "test.pl had problems loading Config: $@"; + $sep = ':'; + } else { + $sep = $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 $is_vms && ($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; + $ENV{PATH} .= "$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 BAILOUT { - print STDOUT "Bail out! @_\n"; - exit; +sub DIE { + _print_stderr "# @_\n"; + exit 1; } +# A somewhat safer version of the sometimes wrong $^X. +sub which_perl { + unless (defined $Perl) { + $Perl = $^X; + + # VMS should have 'perl' aliased properly + return $Perl if $^O eq 'VMS'; + + my $exe; + eval "require Config; Config->import"; + if ($@) { + warn "test.pl had problems loading Config: $@"; + $exe = ''; + } else { + $exe = $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 ($@) { + warn "test.pl had problems loading File::Spec: $@"; + $Perl = "./$perl"; + } else { + $Perl = File::Spec->catfile(File::Spec->curdir(), $perl); + } + } + + # Build up the name of the executable file from the name of + # the command. + + if ($Perl !~ /\Q$exe\E$/i) { + $Perl .= $exe; + } + + warn "which_perl: cannot find $Perl from $^X" unless -f $Perl; + + # For subcommands to use. + $ENV{PERLEXE} = $Perl; + } + return $Perl; +} + +sub unlink_all { + foreach my $file (@_) { + 1 while unlink $file; + _print_stderr "# Couldn't unlink '$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$$"; + do { + $try .= $letters[$temp % 26]; + $temp = int ($temp / 26); + } while $temp; + # Need to note all the file names we allocated, as a second request may + # come before the first is created. + if (!-e $try && !$tmpfiles{$try}) { + # We have a winner + $tmpfiles{$try}++; + return $try; + } + $count = $count + 1; + } while $count < 26 * 26; + die "Can't find temporary file name starting 'tmp$$'"; +} + +# This is the temporary file for _fresh_perl +my $tmpfile = tempfile(); + +# +# _fresh_perl +# +# The $resolve must be a subref that tests the first argument +# for success, or returns the definition of success (e.g. the +# expected scalar) if given no arguments. +# + +sub _fresh_perl { + my($prog, $resolve, $runperl_args, $name) = @_; + + $runperl_args ||= {}; + $runperl_args->{progfile} = $tmpfile; + $runperl_args->{stderr} = 1; + + open TEST, ">$tmpfile" or die "Cannot open $tmpfile: $!"; + + # VMS adjustments + if( $^O eq 'VMS' ) { + $prog =~ s#/dev/null#NL:#; + + # VMS file locking + $prog =~ s{if \(-e _ and -f _ and -r _\)} + {if (-e _ and -f _)} + } + + 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. + $results =~ s/\n+$//; + $results =~ s/at\s+$::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'. + $results =~ s/^(syntax|parse) error/syntax error/mig; + + if ($^O eq 'VMS') { + # some tests will trigger VMS messages that won't be expected + $results =~ s/\n?%[A-Z]+-[SIWEF]-[A-Z]+,.*//; + + # pipes double these sometimes + $results =~ s/\n\n/\n/g; + } + + my $pass = $resolve->($results); + unless ($pass) { + _diag "# PROG: \n$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 $name; + } + + _ok($pass, _where(), "fresh_perl - $name"); +} + +# +# fresh_perl_is +# +# Combination of run_perl() and is(). +# + +sub fresh_perl_is { + my($prog, $expected, $runperl_args, $name) = @_; + local $Level = 2; + _fresh_perl($prog, + sub { @_ ? $_[0] eq $expected : $expected }, + $runperl_args, $name); +} + +# +# fresh_perl_like +# +# Combination of run_perl() and like(). +# + +sub fresh_perl_like { + my($prog, $expected, $runperl_args, $name) = @_; + local $Level = 2; + _fresh_perl($prog, + sub { @_ ? + $_[0] =~ (ref $expected ? $expected : /$expected/) : + $expected }, + $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'; + $watchdog = system(1, which_perl(), '-e', + "sleep($timeout);" . + "warn('# $timeout_msg\n');" . + "kill($sig, $pid_to_kill);"); + }; + if ($@ || ($watchdog <= 0)) { + _diag('Failed to start watchdog'); + _diag($@) 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; }) { + threads->create(sub { + # Load POSIX if available + eval { require POSIX; }; + + # Execute the timeout + my $time_left = $timeout; + do { + $time_left -= sleep($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;