1 package Test::Valgrind::Session;
8 Test::Valgrind::Session - Test::Valgrind session object.
16 our $VERSION = '1.02';
20 This class supervises the execution of the C<valgrind> process.
21 It also acts as a dispatcher between the different components.
28 use Fcntl (); # F_SETFD
29 use POSIX (); # SIGKILL
33 use base qw/Test::Valgrind::Carp/;
37 =head2 C<< new search_dirs => \@search_dirs, valgrind => [ $valgrind | \@valgrind ], min_version => $min_version, no_def_supp => $no_def_supp, extra_supps => \@extra_supps >>
39 The package constructor, which takes several options :
45 All the directories from C<@search_dirs> will have F<valgrind> appended to create a list of candidates for the C<valgrind> executable.
47 Defaults to the current C<PATH> environment variable.
51 If a simple scalar C<$valgrind> is passed as the value to C<'valgrind'>, it will be the only candidate.
52 C<@search_dirs> will then be ignored.
54 If an array refernce C<\@valgrind> is passed, its values will be I<prepended> to the list of the candidates resulting from C<@search_dirs>.
58 C<$min_version> specifies the minimal C<valgrind> version required.
59 The constructor will croak if it's not able to find an adequate C<valgrind> from the supplied candidates list and search path.
65 If C<$no_def_supp> is false, C<valgrind> won't read the default suppression file associated with the tool and the command.
71 C<$extra_supps> is a reference to an array of optional suppression files that will be passed to C<valgrind>.
81 $class = ref($class) || $class;
86 my $vg = delete $args{vg};
87 if (defined $vg and not ref $vg) {
90 push @paths, @$vg if $vg and ref $vg eq 'ARRAY';
91 my $dirs = delete $args{search_dirs};
92 $dirs = [ File::Spec->path ] unless $dirs;
93 push @paths, map File::Spec->catfile($_, 'valgrind'), @$dirs
94 if ref $dirs eq 'ARRAY';
96 $class->_croak('Empty valgrind candidates list') unless @paths;
98 my $min_version = delete $args{min_version};
99 defined and not ref and $_ = version->new($_) for $min_version;
101 my ($valgrind, $version);
104 my $ver = qx/$_ --version/;
105 if ($ver =~ /^valgrind-(\d+(\.\d+)*)/) {
107 $version = version->new($1);
108 next if $version < $min_version;
116 $class->_croak('No appropriate valgrind executable could be found')
117 unless defined $valgrind;
119 my $extra_supps = delete $args{extra_supps};
120 $extra_supps = [ ] unless $extra_supps and ref $extra_supps eq 'ARRAY';
121 @$extra_supps = grep { defined && -f $_ && -r _ } @$extra_supps;
124 valgrind => $valgrind,
126 no_def_supp => delete($args{no_def_supp}),
127 extra_supps => $extra_supps,
133 The path to the selected C<valgrind> executable.
137 The L<version> object associated to the selected C<valgrind>.
144 my $version = $self->{version};
145 $self->{version} = $version = version->new($version) unless ref $version;
150 =head2 C<no_def_supp>
152 Read-only accessor for the C<no_def_supp> option.
156 eval "sub $_ { \$_[0]->{$_} }" for qw/valgrind no_def_supp/;
158 =head2 C<extra_supps>
160 Read-only accessor for the C<extra_supps> option.
164 sub extra_supps { @{$_[0]->{extra_supps} || []} }
166 =head2 C<< run action => $action, tool => $tool, command => $command >>
168 Runs the command C<$command> through C<valgrind> with the tool C<$tool>, which will report to the action C<$action>.
170 If the command is a L<Test::Valgrind::Command::Aggregate> object, the action and the tool will be initialized once before running all the aggregated commands.
180 my $guard = bless sub { $self->finish } => 'Test::Valgrind::Session::Guard';
182 $self->_run($args{command});
186 my ($self, $cmd) = @_;
188 if ($cmd->isa('Test::Valgrind::Command::Aggregate')) {
189 $self->_run($_) for $cmd->commands;
193 $self->command($cmd);
195 $self->report($self->report_class->new_diag(
196 'Using valgrind ' . $self->version . ' located at ' . $self->valgrind
199 my $env = $self->command->env($self);
202 if ($self->do_suppressions) {
203 push @supp_args, '--gen-suppressions=all';
204 } elsif (not $self->no_def_supp) {
205 my $def_supp = $self->def_supp_file;
206 if (defined $def_supp and not -e $def_supp) {
207 $self->report($self->report_class->new_diag(
208 "Generating suppressions..."
210 require Test::Valgrind::Suppressions;
211 Test::Valgrind::Suppressions->generate(
213 command => $self->command,
216 $self->_croak('Couldn\'t generate suppressions') unless -e $def_supp;
217 $self->report($self->report_class->new_diag(
218 "Suppressions for this perl stored in $def_supp"
221 push @supp_args, '--suppressions=' . $_ for $self->suppressions;
224 pipe my $vrdr, my $vwtr or $self->_croak("pipe(\$vrdr, \$vwtr): $!");
226 my $oldfh = select $vrdr;
232 $self->_croak("fork(): $!") unless defined $pid;
236 close $vrdr or $self->_croak("close(\$vrdr): $!");
237 fcntl $vwtr, Fcntl::F_SETFD(), 0
238 or $self->_croak("fcntl(\$vwtr, F_SETFD, 0): $!");
242 $self->tool->args($self),
244 $self->parser->args($self, $vwtr),
245 $self->command->args($self),
248 # $self->report($self->report_class->new_diag("@args"));
250 exec { $args[0] } @args or $self->_croak("exec @args: $!");
253 local $SIG{INT} = sub {
254 kill -(POSIX::SIGKILL()) => $pid;
259 close $vwtr or $self->_croak("close(\$vwtr): $!");
261 $self->parser->parse($self, $vrdr);
263 $self->{exit_code} = (waitpid($pid, 0) == $pid) ? $? >> 8 : 255;
265 close $vrdr or $self->_croak("close(\$vrdr): $!");
270 sub Test::Valgrind::Session::Guard::DESTROY { $_[0]->() }
274 Read-only accessor for the C<action> associated to the current run.
278 Read-only accessor for the C<tool> associated to the current run.
282 Read-only accessor for the C<command> associated to the current run.
288 @members = qw/action tool command parser/;
290 eval "sub $_ { \@_ <= 1 ? \$_[0]->{$_} : (\$_[0]->{$_} = \$_[1]) }";
295 =head2 C<do_suppressions>
297 Forwards to C<< ->action->do_suppressions >>.
301 sub do_suppressions { $_[0]->action->do_suppressions }
303 =head2 C<report_class>
305 Calls C<< ->action->report_class >> with the current session object as the unique argument.
309 sub report_class { $_[0]->tool->report_class($_[0]) }
311 =head2 C<def_supp_file>
313 Returns an absolute path to the default suppression file associated to the current session.
315 C<undef> will be returned as soon as any of C<< ->command->suppressions_tag >> or C<< ->tool->suppressions_tag >> are also C<undef>.
316 Otherwise, the file part of the name is builded by joining those two together, and the directory part is roughly F<< File::HomeDir->my_home / .perl / Test-Valgrind / suppressions / $VERSION >>.
323 my $tool_tag = $self->tool->suppressions_tag($self);
324 return unless defined $tool_tag;
326 my $cmd_tag = $self->command->suppressions_tag($self);
327 return unless defined $cmd_tag;
329 require File::HomeDir; # So that it's not needed at configure time.
331 return File::Spec->catfile(
332 File::HomeDir->my_home,
337 "$tool_tag-$cmd_tag.supp",
341 =head2 C<suppressions>
343 Returns the list of all the suppressions that will be passed to C<valgrind>.
344 Honors L</no_def_supp> and L</extra_supps>.
352 unless ($self->no_def_supp) {
353 my $def_supp = $self->def_supp_file;
354 push @supps, $def_supp if defined $def_supp;
356 push @supps, $self->extra_supps;
363 Starts the action and tool associated to the current run.
364 It's automatically called at the beginning of L</run>.
373 for (qw/action tool command/) {
374 my $base = 'Test::Valgrind::' . ucfirst;
375 my $value = $args{$_};
376 $self->_croak("Invalid $_") unless Scalar::Util::blessed($value)
377 and $value->isa($base);
381 delete @{$self}{qw/last_status exit_code/};
383 $self->tool->start($self);
384 $self->parser($self->tool->parser_class($self)->new)->start($self);
385 $self->action->start($self);
392 Forwards to C<< ->action->abort >> after unshifting the session object to the argument list.
399 $self->action->abort($self, @_);
402 =head2 C<report $report>
404 Forwards to C<< ->action->report >> after unshifting the session object to the argument list.
409 my ($self, $report) = @_;
411 return unless defined $report;
413 for my $handler (qw/tool command/) {
414 $report = $self->$handler->filter($self, $report);
415 return unless defined $report;
418 $self->action->report($self, $report);
423 Finishes the action and tool associated to the current run.
424 It's automatically called at the end of L</run>.
431 my $action = $self->action;
433 $action->finish($self);
434 $self->parser->finish($self);
435 $self->tool->finish($self);
437 my $status = $action->status($self);
438 $self->{last_status} = defined $status ? $status : $self->{exit_code};
440 $self->$_(undef) for @members;
447 Returns the status code of the last run of the session.
451 sub status { $_[0]->{last_status} }
455 L<Test::Valgrind>, L<Test::Valgrind::Action>, L<Test::Valgrind::Command>, L<Test::Valgrind::Tool>, L<Test::Valgrind::Parser>.
457 L<version>, L<File::HomeDir>.
461 Vincent Pit, C<< <perl at profvince.com> >>, L<http://www.profvince.com>.
463 You can contact me by mail or on C<irc.perl.org> (vincent).
467 Please report any bugs or feature requests to C<bug-test-valgrind at rt.cpan.org>, or through the web interface at L<http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Test-Valgrind>.
468 I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.
472 You can find documentation for this module with the perldoc command.
474 perldoc Test::Valgrind::Session
476 =head1 COPYRIGHT & LICENSE
478 Copyright 2009 Vincent Pit, all rights reserved.
480 This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
484 1; # End of Test::Valgrind::Session