There are a number of special data structures provided to the debugger by
the Perl interpreter.
-The array C<@{$main::{'_<'.$filename}}> (aliased locally to C<@dbline> via glob
-assignment) contains the text from C<$filename>, with each element
-corresponding to a single line of C<$filename>.
+The array C<@{$main::{'_<'.$filename}}> (aliased locally to C<@dbline>
+via glob assignment) contains the text from C<$filename>, with each
+element corresponding to a single line of C<$filename>. Additionally,
+breakable lines will be dualvars with the numeric component being the
+memory address of a COP node. Non-breakable lines are dualvar to 0.
The hash C<%{'_<'.$filename}> (aliased locally to C<%dbline> via glob
assignment) contains breakpoints and actions. The keys are line numbers;
# Changes: 1.32: Jun 03, 2009 Jonathan Leto <jonathan@leto.net>
# + Fix bug where a key _< with undefined value was put into the symbol table
# + when the $filename variable is not set
+# Changes: 1.33:
+# + Debugger prints lines to the remote port when it forks and openes a new port (f633fd2)
+# + The debugger now continues to use RemotePort when it's been configured to use it. (11653f7)
+# + Stop using $ENV{LESS} for parameters not intended for less (d463cf2)
+# + Configure has a path to less and perl5db.pl can use it (bf320d6)
+# + Die with $@ instead of empty message (86755f4)
+# + Remove extra/useless $@ check after eval { require PadWalker } (which is still checked) (dab8d6d)
+# + Promote eval( "require ..." ) to eval { require ... } (4a49187)
+# + Promote eval { require( ... )} || die to mere require( ... ) (999f23b)
+# + Remove indirect object notation from debugger (bee4b46)
+# + Document that @{$main::{'_<'.$filename}} lines are dualvar to (COP*). (7e17a74)
+# + Remove MacOS classic support from the debugger. (2b894b7)
########################################################################
=head1 DEBUGGER INITIALIZATION
The last thing we do during initialization is determine which subroutine is
to be used to obtain a new terminal when a new debugger is started. Right now,
-the debugger only handles X Windows, OS/2, and Mac OS X (darwin).
+the debugger only handles TCP sockets, X Windows, OS/2, amd Mac OS X
+(darwin).
=cut
if (not defined &get_fork_TTY) # only if no routine exists
{
- if (defined $ENV{TERM} # If we know what kind
+ if ( defined $remoteport ) {
+ # Expect an inetd-like server
+ *get_fork_TTY = \&socket_get_fork_TTY; # to listen to us
+ }
+ elsif (defined $ENV{TERM} # If we know what kind
# of terminal this is,
and $ENV{TERM} eq 'xterm' # and it's an xterm,
and defined $ENV{DISPLAY} # and what display it's on,
# If RemotePort was defined in the options, connect input and output
# to the socket.
- require IO::Socket;
- $OUT = new IO::Socket::INET(
- Timeout => '10',
- PeerAddr => $remoteport,
- Proto => 'tcp',
- );
- if ( !$OUT ) { die "Unable to connect to remote host: $remoteport\n"; }
- $IN = $OUT;
+ $IN = $OUT = connect_remoteport();
} ## end if (defined $remoteport)
=pod
# Load Term::Readline, but quietly; don't debug it and don't trace it.
local $frame = 0;
local $doret = -2;
- eval { require Term::ReadLine } or die $@;
+ require Term::ReadLine;
# If noTTY is set, but we have a TTY name, go ahead and hook up to it.
if ($notty) {
# We don't have a TTY - try to find one via Term::Rendezvous.
else {
- eval "require Term::Rendezvous;" or die;
+ require Term::Rendezvous;
# See if we have anything to pass to Term::Rendezvous.
# Use $HOME/.perldbtty$$ if not.
my $rv = $ENV{PERLDB_NOTTY} || "$ENV{HOME}/.perldbtty$$";
# Rendezvous and get the filehandles.
- my $term_rv = new Term::Rendezvous $rv;
+ my $term_rv = Term::Rendezvous->new( $rv );
$IN = $term_rv->IN;
$OUT = $term_rv->OUT;
} ## end else [ if ($tty)
# If we shouldn't use Term::ReadLine, don't.
if ( !$rl ) {
- $term = new Term::ReadLine::Stub 'perldb', $IN, $OUT;
+ $term = Term::ReadLine::Stub->new( 'perldb', $IN, $OUT );
}
# We're using Term::ReadLine. Get all the attributes for this terminal.
else {
- $term = new Term::ReadLine 'perldb', $IN, $OUT;
+ $term = Term::ReadLine->new( 'perldb', $IN, $OUT );
$rl_attribs = $term->Attribs;
$rl_attribs->{basic_word_break_characters} .= '-:+/*,[])}'
TTY (and probably another window) and to direct the new debugger to read and
write there.
-The debugger provides C<get_fork_TTY> functions which work for X Windows,
-OS/2, and Mac OS X. Other systems are not supported. You are encouraged
-to write C<get_fork_TTY> functions which work for I<your> platform
-and contribute them.
+The debugger provides C<get_fork_TTY> functions which work for TCP
+socket servers, X Windows, OS/2, and Mac OS X. Other systems are not
+supported. You are encouraged to write C<get_fork_TTY> functions which
+work for I<your> platform and contribute them.
+
+=head3 C<socket_get_fork_TTY>
+
+=cut
+
+sub connect_remoteport {
+ require IO::Socket;
+
+ my $socket = IO::Socket::INET->new(
+ Timeout => '10',
+ PeerAddr => $remoteport,
+ Proto => 'tcp',
+ );
+ if ( ! $socket ) {
+ die "Unable to connect to remote host: $remoteport\n";
+ }
+ return $socket;
+}
+
+sub socket_get_fork_TTY {
+ $tty = $LINEINFO = $IN = $OUT = connect_remoteport();
+
+ # Do I need to worry about setting $term?
+
+ reset_IN_OUT( $IN, $OUT );
+ return '';
+}
=head3 C<xterm_get_fork_TTY>
# We need $term defined or we can not switch to the newly created xterm
if ($tty ne '' && !defined $term) {
- eval { require Term::ReadLine } or die $@;
+ require Term::ReadLine;
if ( !$rl ) {
- $term = new Term::ReadLine::Stub 'perldb', $IN, $OUT;
+ $term = Term::ReadLine::Stub->new( 'perldb', $IN, $OUT );
}
else {
- $term = new Term::ReadLine 'perldb', $IN, $OUT;
+ $term = Term::ReadLine->new( 'perldb', $IN, $OUT );
}
}
# There's our new TTY.
local \$doret = -2;
require '$optionRequire{$option}';
1;
- } || die # XXX: shouldn't happen
+ } || die $@ # XXX: shouldn't happen
if defined $optionRequire{$option}
&& defined $val;
This routine does a lot of gyrations to be sure that the pager is C<less>.
It checks for C<less> masquerading as C<more> and records the result in
-C<$ENV{LESS}> so we don't have to go through doing the stats again.
+C<$fixed_less> so we don't have to go through doing the stats again.
=cut
sub fix_less {
+ my $config_less = eval {
+ require Config;
+ $Config::Config{less};
+ };
+ return $config_less if $config_less;
+
# We already know if this is set.
- return if defined $ENV{LESS} && $ENV{LESS} =~ /r/;
+ return if $fixed_less;
# Pager is less for sure.
my $is_less = $pager =~ /\bless\b/;
# changes environment!
# 'r' added so we don't do (slow) stats again.
- $ENV{LESS} .= 'r' if $is_less;
+ $fixed_less = 1 if $is_less;
} ## end sub fix_less
=head1 DIE AND WARN MANAGEMENT
=cut
- if (not $text =~ /::/ and eval "require PadWalker; 1" and not $@ ) {
+ if (not $text =~ /::/ and eval { require PadWalker } ) {
my $level = 1;
while (1) {
my @info = caller($level);
https://perl5.git.perl.org / perl5.git / blobdiff