| Current Path : /proc/2/root/usr/local/rvglobalsoft/lib/perl5/Test2/ |
| Current File : //proc/2/root/usr/local/rvglobalsoft/lib/perl5/Test2/Util.pm |
package Test2::Util;
use strict;
use warnings;
our $VERSION = '1.302086';
use Config qw/%Config/;
use Carp qw/croak/;
use PerlIO();
our @EXPORT_OK = qw{
try
pkg_to_file
get_tid USE_THREADS
CAN_THREAD
CAN_REALLY_FORK
CAN_FORK
CAN_SIGSYS
IS_WIN32
ipc_separator
clone_io
};
BEGIN { require Exporter; our @ISA = qw(Exporter) }
BEGIN {
*IS_WIN32 = ($^O eq 'MSWin32') ? sub() { 1 } : sub() { 0 };
}
sub _can_thread {
return 0 unless $] >= 5.008001;
return 0 unless $Config{'useithreads'};
# Threads are broken on perl 5.10.0 built with gcc 4.8+
if ($] == 5.010000 && $Config{'ccname'} eq 'gcc' && $Config{'gccversion'}) {
my @parts = split /\./, $Config{'gccversion'};
return 0 if $parts[0] > 4 || ($parts[0] == 4 && $parts[1] >= 8);
}
# Change to a version check if this ever changes
return 0 if $INC{'Devel/Cover.pm'};
return 1;
}
sub _can_fork {
return 1 if $Config{d_fork};
return 0 unless IS_WIN32 || $^O eq 'NetWare';
return 0 unless $Config{useithreads};
return 0 unless $Config{ccflags} =~ /-DPERL_IMPLICIT_SYS/;
return _can_thread();
}
BEGIN {
no warnings 'once';
*CAN_THREAD = _can_thread() ? sub() { 1 } : sub() { 0 };
}
my $can_fork;
sub CAN_FORK () {
return $can_fork
if defined $can_fork;
$can_fork = !!_can_fork();
no warnings 'redefine';
*CAN_FORK = $can_fork ? sub() { 1 } : sub() { 0 };
$can_fork;
}
my $can_really_fork;
sub CAN_REALLY_FORK () {
return $can_really_fork
if defined $can_really_fork;
$can_really_fork = !!$Config{d_fork};
no warnings 'redefine';
*CAN_REALLY_FORK = $can_really_fork ? sub() { 1 } : sub() { 0 };
$can_really_fork;
}
sub _manual_try(&;@) {
my $code = shift;
my $args = \@_;
my $err;
my $die = delete $SIG{__DIE__};
eval { $code->(@$args); 1 } or $err = $@ || "Error was squashed!\n";
$die ? $SIG{__DIE__} = $die : delete $SIG{__DIE__};
return (!defined($err), $err);
}
sub _local_try(&;@) {
my $code = shift;
my $args = \@_;
my $err;
no warnings;
local $SIG{__DIE__};
eval { $code->(@$args); 1 } or $err = $@ || "Error was squashed!\n";
return (!defined($err), $err);
}
# Older versions of perl have a nasty bug on win32 when localizing a variable
# before forking or starting a new thread. So for those systems we use the
# non-local form. When possible though we use the faster 'local' form.
BEGIN {
if (IS_WIN32 && $] < 5.020002) {
*try = \&_manual_try;
}
else {
*try = \&_local_try;
}
}
BEGIN {
if (CAN_THREAD) {
if ($INC{'threads.pm'}) {
# Threads are already loaded, so we do not need to check if they
# are loaded each time
*USE_THREADS = sub() { 1 };
*get_tid = sub() { threads->tid() };
}
else {
# :-( Need to check each time to see if they have been loaded.
*USE_THREADS = sub() { $INC{'threads.pm'} ? 1 : 0 };
*get_tid = sub() { $INC{'threads.pm'} ? threads->tid() : 0 };
}
}
else {
# No threads, not now, not ever!
*USE_THREADS = sub() { 0 };
*get_tid = sub() { 0 };
}
}
sub pkg_to_file {
my $pkg = shift;
my $file = $pkg;
$file =~ s{(::|')}{/}g;
$file .= '.pm';
return $file;
}
sub ipc_separator() { "~" }
sub _check_for_sig_sys {
my $sig_list = shift;
return $sig_list =~ m/\bSYS\b/;
}
BEGIN {
if (_check_for_sig_sys($Config{sig_name})) {
*CAN_SIGSYS = sub() { 1 };
}
else {
*CAN_SIGSYS = sub() { 0 };
}
}
my %PERLIO_SKIP = (
unix => 1,
via => 1,
);
sub clone_io {
my ($fh) = @_;
my $fileno = fileno($fh) or croak "Could not get fileno for handle";
my %seen;
open(my $out, '>&', $fileno) or die "Can't dup fileno $fileno: $!";
binmode($out, join(":", "", "raw", grep { !$PERLIO_SKIP{$_} and !$seen{$_}++ } PerlIO::get_layers(STDOUT)));
my $old = select $fh;
my $af = $|;
select $out;
$| = $af;
select $old;
return $out;
}
1;
__END__
=pod
=encoding UTF-8
=head1 NAME
Test2::Util - Tools used by Test2 and friends.
=head1 DESCRIPTION
Collection of tools used by L<Test2> and friends.
=head1 EXPORTS
All exports are optional. You must specify subs to import.
=over 4
=item ($success, $error) = try { ... }
Eval the codeblock, return success or failure, and the error message. This code
protects $@ and $!, they will be restored by the end of the run. This code also
temporarily blocks $SIG{DIE} handlers.
=item protect { ... }
Similar to try, except that it does not catch exceptions. The idea here is to
protect $@ and $! from changes. $@ and $! will be restored to whatever they
were before the run so long as it is successful. If the run fails $! will still
be restored, but $@ will contain the exception being thrown.
=item CAN_FORK
True if this system is capable of true or pseudo-fork.
=item CAN_REALLY_FORK
True if the system can really fork. This will be false for systems where fork
is emulated.
=item CAN_THREAD
True if this system is capable of using threads.
=item USE_THREADS
Returns true if threads are enabled, false if they are not.
=item get_tid
This will return the id of the current thread when threads are enabled,
otherwise it returns 0.
=item my $file = pkg_to_file($package)
Convert a package name to a filename.
=back
=head1 NOTES && CAVEATS
=over 4
=item 5.10.0
Perl 5.10.0 has a bug when compiled with newer gcc versions. This bug causes a
segfault whenever a new thread is launched. Test2 will attempt to detect
this, and note that the system is not capable of forking when it is detected.
=item Devel::Cover
Devel::Cover does not support threads. CAN_THREAD will return false if
Devel::Cover is loaded before the check is first run.
=back
=head1 SOURCE
The source code repository for Test2 can be found at
F<http://github.com/Test-More/test-more/>.
=head1 MAINTAINERS
=over 4
=item Chad Granum E<lt>exodist@cpan.orgE<gt>
=back
=head1 AUTHORS
=over 4
=item Chad Granum E<lt>exodist@cpan.orgE<gt>
=item Kent Fredric E<lt>kentnl@cpan.orgE<gt>
=back
=head1 COPYRIGHT
Copyright 2017 Chad Granum E<lt>exodist@cpan.orgE<gt>.
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
See F<http://dev.perl.org/licenses/>
=cut
Copyright 2K16 - 2K18 Indonesian Hacker Rulez
;?>)