# Debugger for Perl 5.00x; perl5db.pl patch level:
-$VERSION = 1.07;
+$VERSION = 1.14;
$header = "perl5db.pl version $VERSION";
#
# if caller() is called from the package DB, it provides some
# additional data.
#
-# The array @{$main::{'_<'.$filename} is the line-by-line contents of
+# The array @{$main::{'_<'.$filename}} is the line-by-line contents of
# $filename.
#
# The hash %{'_<'.$filename} contains breakpoints and action (it is
##################################################################
# Enhanced by ilya@math.ohio-state.edu (Ilya Zakharevich)
-# Latest version available: ftp://ftp.math.ohio-state.edu/pub/users/ilya/perl
# modified Perl debugger, to be run from Emacs in perldb-mode
# Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990
# Some additional words on internal work of debugger.
# `b load filename' implemented.
# `b postpone subr' implemented.
-# now only `q' exits debugger (overwriteable on $inhibit_exit).
+# now only `q' exits debugger (overwritable on $inhibit_exit).
# When restarting debugger breakpoints/actions persist.
# Buglet: When restarting debugger only one breakpoint/action per
# autoloaded function persists.
# new `inhibitExit' option.
# printing of a very long statement interruptible.
# Changes: 0.98: New command `m' for printing possible methods
-# 'l -' is a synonim for `-'.
+# 'l -' is a synonym for `-'.
# Cosmetic bugs in printing stack trace.
# `frame' & 8 to print "expanded args" in stack trace.
# Can list/break in imported subs.
# when completing a subroutine name (same for `l').
# Changes: 1.07: Many fixed by tchrist 13-March-2000
# BUG FIXES:
-# + Added bare mimimal security checks on perldb rc files, plus
+# + Added bare minimal security checks on perldb rc files, plus
# comments on what else is needed.
# + Fixed the ornaments that made "|h" completely unusable.
# They are not used in print_help if they will hurt. Strip pod
# + Fixed mis-formatting of help messages caused by ornaments
# to restore Larry's original formatting.
# + Fixed many other formatting errors. The code is still suboptimal,
-# and needs a lot of work at restructuing. It's also misindented
+# and needs a lot of work at restructuring. It's also misindented
# in many places.
# + Fixed bug where trying to look at an option like your pager
# shows "1".
# or else not caring about detailed status. This should really be
# unified into one place, too.
# + Fixed bug where invisible trailing whitespace on commands hoses you,
-# tricking Perl into thinking you wern't calling a debugger command!
+# tricking Perl into thinking you weren't calling a debugger command!
# + Fixed bug where leading whitespace on commands hoses you. (One
# suggests a leading semicolon or any other irrelevant non-whitespace
# to indicate literal Perl code.)
# + Added to and rearranged the help information.
# + Detected apparent misuse of { ... } to declare a block; this used
# to work but now is a command, and mysteriously gave no complaint.
-
+#
+# Changes: 1.08: Apr 25, 2001 Jon Eveland <jweveland@yahoo.com>
+# BUG FIX:
+# + This patch to perl5db.pl cleans up formatting issues on the help
+# summary (h h) screen in the debugger. Mostly columnar alignment
+# issues, plus converted the printed text to use all spaces, since
+# tabs don't seem to help much here.
+#
+# Changes: 1.09: May 19, 2001 Ilya Zakharevich <ilya@math.ohio-state.edu>
+# 0) Minor bugs corrected;
+# a) Support for auto-creation of new TTY window on startup, either
+# unconditionally, or if started as a kid of another debugger session;
+# b) New `O'ption CreateTTY
+# I<CreateTTY> bits control attempts to create a new TTY on events:
+# 1: on fork() 2: debugger is started inside debugger
+# 4: on startup
+# c) Code to auto-create a new TTY window on OS/2 (currently one one
+# extra window per session - need named pipes to have more...);
+# d) Simplified interface for custom createTTY functions (with a backward
+# compatibility hack); now returns the TTY name to use; return of ''
+# means that the function reset the I/O handles itself;
+# d') Better message on the semantic of custom createTTY function;
+# e) Convert the existing code to create a TTY into a custom createTTY
+# function;
+# f) Consistent support for TTY names of the form "TTYin,TTYout";
+# g) Switch line-tracing output too to the created TTY window;
+# h) make `b fork' DWIM with CORE::GLOBAL::fork;
+# i) High-level debugger API cmd_*():
+# cmd_b_load($filenamepart) # b load filenamepart
+# cmd_b_line($lineno [, $cond]) # b lineno [cond]
+# cmd_b_sub($sub [, $cond]) # b sub [cond]
+# cmd_stop() # Control-C
+# cmd_d($lineno) # d lineno
+# The cmd_*() API returns FALSE on failure; in this case it outputs
+# the error message to the debugging output.
+# j) Low-level debugger API
+# break_on_load($filename) # b load filename
+# @files = report_break_on_load() # List files with load-breakpoints
+# breakable_line_in_filename($name, $from [, $to])
+# # First breakable line in the
+# # range $from .. $to. $to defaults
+# # to $from, and may be less than $to
+# breakable_line($from [, $to]) # Same for the current file
+# break_on_filename_line($name, $lineno [, $cond])
+# # Set breakpoint,$cond defaults to 1
+# break_on_filename_line_range($name, $from, $to [, $cond])
+# # As above, on the first
+# # breakable line in range
+# break_on_line($lineno [, $cond]) # As above, in the current file
+# break_subroutine($sub [, $cond]) # break on the first breakable line
+# ($name, $from, $to) = subroutine_filename_lines($sub)
+# # The range of lines of the text
+# The low-level API returns TRUE on success, and die()s on failure.
+#
+# Changes: 1.10: May 23, 2001 Daniel Lewart <d-lewart@uiuc.edu>
+# BUG FIXES:
+# + Fixed warnings generated by "perl -dWe 42"
+# + Corrected spelling errors
+# + Squeezed Help (h) output into 80 columns
+#
+# Changes: 1.11: May 24, 2001 David Dyck <dcd@tc.fluke.com>
+# + Made "x @INC" work like it used to
+#
+# Changes: 1.12: May 24, 2001 Daniel Lewart <d-lewart@uiuc.edu>
+# + Fixed warnings generated by "O" (Show debugger options)
+# + Fixed warnings generated by "p 42" (Print expression)
+# Changes: 1.13: Jun 19, 2001 Scott.L.Miller@compaq.com
+# + Added windowSize option
####################################################################
# Needed for the statement after exec():
TTY noTTY ReadLine NonStop LineInfo maxTraceLen
recallCommand ShellBang pager tkRunning ornaments
signalLevel warnLevel dieLevel inhibit_exit
- ImmediateStop bareStringify
- RemotePort);
+ ImmediateStop bareStringify CreateTTY
+ RemotePort windowSize);
%optionVars = (
hashDepth => \$dumpvar::hashDepth,
HighBit => \$dumpvar::quoteHighBit,
undefPrint => \$dumpvar::printUndef,
globPrint => \$dumpvar::globPrint,
- UsageOnly => \$dumpvar::usageOnly,
+ UsageOnly => \$dumpvar::usageOnly,
+ CreateTTY => \$CreateTTY,
bareStringify => \$dumpvar::bareStringify,
frame => \$frame,
AutoTrace => \$trace,
maxTraceLen => \$maxtrace,
ImmediateStop => \$ImmediateStop,
RemotePort => \$remoteport,
+ windowSize => \$window,
);
%optionAction = (
# These guys may be defined in $ENV{PERL5DB} :
$rl = 1 unless defined $rl;
-$warnLevel = 0 unless defined $warnLevel;
-$dieLevel = 0 unless defined $dieLevel;
+$warnLevel = 1 unless defined $warnLevel;
+$dieLevel = 1 unless defined $dieLevel;
$signalLevel = 1 unless defined $signalLevel;
$pre = [] unless defined $pre;
$post = [] unless defined $post;
$pretype = [] unless defined $pretype;
+$CreateTTY = 3 unless defined $CreateTTY;
warnLevel($warnLevel);
dieLevel($dieLevel);
setman();
&recallCommand("!") unless defined $prc;
&shellBang("!") unless defined $psh;
+sethelp();
$maxtrace = 400 unless defined $maxtrace;
+$ini_pids = $ENV{PERLDB_PIDS};
+if (defined $ENV{PERLDB_PIDS}) {
+ $pids = "[$ENV{PERLDB_PIDS}]";
+ $ENV{PERLDB_PIDS} .= "->$$";
+ $term_pid = -1;
+} else {
+ $ENV{PERLDB_PIDS} = "$$";
+ $pids = '';
+ $term_pid = $$;
+}
+$pidprompt = '';
+*emacs = $slave_editor if $slave_editor; # May be used in afterinit()...
if (-e "/dev/tty") { # this is the wrong metric!
$rcfile=".perldb";
parse_options($ENV{PERLDB_OPTS});
}
+if ( not defined &get_fork_TTY and defined $ENV{TERM} and $ENV{TERM} eq 'xterm'
+ and defined $ENV{WINDOWID} and defined $ENV{DISPLAY} ) { # _inside_ XTERM?
+ *get_fork_TTY = \&xterm_get_fork_TTY;
+} elsif ($^O eq 'os2') {
+ *get_fork_TTY = \&os2_get_fork_TTY;
+}
+
# Here begin the unreadable code. It needs fixing.
if (exists $ENV{PERLDB_RESTART}) {
$console = "/dev/tty";
} elsif ($^O eq 'dos' or -e "con" or $^O eq 'MSWin32') {
$console = "con";
+ } elsif ($^O eq 'MacOS') {
+ if ($MacPerl::Version !~ /MPW/) {
+ $console = "Dev:Console:Perl Debug"; # Separate window for application
+ } else {
+ $console = "Dev:Console";
+ }
} else {
$console = "sys\$command";
}
$console = undef;
}
+ if ($^O eq 'NetWare') {
+ $console = undef;
+ }
+
# Around a bug:
if (defined $ENV{OS2_SHELL} and ($slave_editor or $ENV{WINDOWID})) { # In OS/2
$console = undef;
PeerAddr => $remoteport,
Proto => 'tcp',
);
- if (!$OUT) { die "Could not create socket to connect to remote host."; }
+ if (!$OUT) { die "Unable to connect to remote host: $remoteport\n"; }
$IN = $OUT;
- }
- else {
+ } elsif ($CreateTTY & 4) {
+ create_IN_OUT(4);
+ } else {
if (defined $console) {
- open(IN,"+<$console") || open(IN,"<$console") || open(IN,"<&STDIN");
- open(OUT,"+>$console") || open(OUT,">$console") || open(OUT,">&STDERR")
+ my ($i, $o) = split /,/, $console;
+ $o = $i unless defined $o;
+ open(IN,"+<$i") || open(IN,"<$i") || open(IN,"<&STDIN");
+ open(OUT,"+>$o") || open(OUT,">$o") || open(OUT,">&STDERR")
|| open(OUT,">&STDOUT"); # so we don't dongle stdout
} else {
open(IN,"<&STDIN");
$OUT = \*OUT;
}
- select($OUT);
+ my $previous = select($OUT);
$| = 1; # for DB::OUT
- select(STDOUT);
+ select($previous);
$LINEINFO = $OUT unless defined $LINEINFO;
$lineinfo = $console unless defined $lineinfo;
- $| = 1; # for real STDOUT
-
$header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/;
unless ($runnonstop) {
- print $OUT "\nLoading DB routines from $header\n";
- print $OUT ("Editor support ",
- $slave_editor ? "enabled" : "available",
- ".\n");
- print $OUT "\nEnter h or `h h' for help, or `$doccmd perldebug' for more help.\n\n";
+ if ($term_pid eq '-1') {
+ print $OUT "\nDaughter DB session started...\n";
+ } else {
+ print $OUT "\nLoading DB routines from $header\n";
+ print $OUT ("Editor support ",
+ $slave_editor ? "enabled" : "available",
+ ".\n");
+ print $OUT "\nEnter h or `h h' for help, or `$doccmd perldebug' for more help.\n\n";
+ }
}
}
"package $package;"; # this won't let them modify, alas
local(*dbline) = $main::{'_<' . $filename};
$max = $#dbline;
- if (($stop,$action) = split(/\0/,$dbline{$line})) {
+ if ($dbline{$line} && (($stop,$action) = split(/\0/,$dbline{$line}))) {
if ($stop eq '1') {
$signal |= 1;
} elsif ($stop) {
if ($single || ($trace & 1) || $was_signal) {
if ($slave_editor) {
$position = "\032\032$filename:$line:0\n";
- print $LINEINFO $position;
+ print_lineinfo($position);
} elsif ($package eq 'DB::fake') {
$term || &setterm;
print_help(<<EOP);
$position = "$prefix$line$infix$dbline[$line]$after";
}
if ($frame) {
- print $LINEINFO ' ' x $stack_depth, "$line:\t$dbline[$line]$after";
+ print_lineinfo(' ' x $stack_depth, "$line:\t$dbline[$line]$after");
} else {
- print $LINEINFO $position;
+ print_lineinfo($position);
}
for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { #{ vi
last if $dbline[$i] =~ /^\s*[\;\}\#\n]/;
$incr_pos = "$prefix$i$infix$dbline[$i]$after";
$position .= $incr_pos;
if ($frame) {
- print $LINEINFO ' ' x $stack_depth, "$i:\t$dbline[$i]$after";
+ print_lineinfo(' ' x $stack_depth, "$i:\t$dbline[$i]$after");
} else {
- print $LINEINFO $incr_pos;
+ print_lineinfo($incr_pos);
}
}
}
@typeahead = (@$pretype, @typeahead);
CMD:
while (($term || &setterm),
- ($term_pid == $$ or &resetterm),
- defined ($cmd=&readline(" DB" . ('<' x $level) .
+ ($term_pid == $$ or resetterm(1)),
+ defined ($cmd=&readline("$pidprompt DB" . ('<' x $level) .
($#hist+1) . ('>' x $level) .
" ")))
{
next CMD;
}
}
- $cmd =~ /^q$/ && ($exiting = 1) && exit 0;
+ $cmd =~ /^q$/ && ($fall_off_end = 1) && exit $?;
$cmd =~ /^h$/ && do {
print_help($help);
next CMD; };
$cmd = "$1 $s";
};
$cmd =~ /^l\b\s*([\':A-Za-z_][\':\w]*(\[.*\])?)/s && do {
- $subname = $1;
+ my $s = $subname = $1;
$subname =~ s/\'/::/;
$subname = $package."::".$subname
unless $subname =~ /::/;
+ $subname = "CORE::GLOBAL::$s"
+ if not defined &$subname and $s !~ /::/
+ and defined &{"CORE::GLOBAL::$s"};
$subname = "main".$subname if substr($subname,0,2) eq "::";
@pieces = split(/:/,find_sub($subname) || $sub{$subname});
$subrange = pop @pieces;
$filename = $filename_ini;
*dbline = $main::{'_<' . $filename};
$max = $#dbline;
- print $LINEINFO $position;
+ print_lineinfo($position);
next CMD };
$cmd =~ /^w\b\s*(\d*)$/ && do {
$incr = $window - 1;
$i = $end;
} else {
for (; $i <= $end; $i++) {
- ($stop,$action) = split(/\0/, $dbline{$i});
+ my ($stop,$action);
+ ($stop,$action) = split(/\0/, $dbline{$i}) if
+ $dbline{$i};
$arrow = ($i==$line
and $filename eq $filename_ini)
? '==>'
next CMD; };
$cmd =~ /^b\b\s*load\b\s*(.*)/ && do {
my $file = $1; $file =~ s/\s+$//;
- {
- $break_on_load{$file} = 1;
- $break_on_load{$::INC{$file}} = 1 if $::INC{$file};
- $file .= '.pm', redo unless $file =~ /\./;
- }
- $had_breakpoints{$file} |= 1;
- print $OUT "Will stop on load of `@{[join '\', `', sort keys %break_on_load]}'.\n";
+ cmd_b_load($file);
next CMD; };
$cmd =~ /^b\b\s*(postpone|compile)\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do {
my $cond = length $3 ? $3 : '1';
$cmd =~ /^b\b\s*([':A-Za-z_][':\w]*(?:\[.*\])?)\s*(.*)/ && do {
$subname = $1;
$cond = length $2 ? $2 : '1';
- $subname =~ s/\'/::/g;
- $subname = "${'package'}::" . $subname
- unless $subname =~ /::/;
- $subname = "main".$subname if substr($subname,0,2) eq "::";
- # Filename below can contain ':'
- ($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/);
- $i += 0;
- if ($i) {
- local $filename = $file;
- local *dbline = $main::{'_<' . $filename};
- $had_breakpoints{$filename} |= 1;
- $max = $#dbline;
- ++$i while $dbline[$i] == 0 && $i < $max;
- $dbline{$i} =~ s/^[^\0]*/$cond/;
- } else {
- print $OUT "Subroutine $subname not found.\n";
- }
+ cmd_b_sub($subname, $cond);
next CMD; };
$cmd =~ /^b\b\s*(\d*)\s*(.*)/ && do {
$i = $1 || $line;
- $cond = defined $2 ? $2 : '1';
- if ($dbline[$i] == 0) {
- print $OUT "Line $i not breakable.\n";
- } else {
- $had_breakpoints{$filename} |= 1;
- $dbline{$i} =~ s/^[^\0]*/$cond/;
- }
+ $cond = length $2 ? $2 : '1';
+ cmd_b_line($i, $cond);
next CMD; };
$cmd =~ /^d\b\s*(\d*)/ && do {
- $i = $1 || $line;
- if ($dbline[$i] == 0) {
- print $OUT "Line $i not breakable.\n";
- } else {
- $dbline{$i} =~ s/^[^\0]*//;
- delete $dbline{$i} if $dbline{$i} eq '';
- }
+ cmd_d($1 || $line);
next CMD; };
$cmd =~ /^A$/ && do {
print $OUT "Deleting all actions...\n";
*dbline = $main::{'_<' . $file};
next unless %dbline or $postponed_file{$file};
(push @hard, $file), next
- if $file =~ /^\(eval \d+\)$/;
+ if $file =~ /^\(\w*eval/;
my @add;
@add = %{$postponed_file{$file}}
if $postponed_file{$file};
set_list("PERLDB_POST", @$post);
set_list("PERLDB_TYPEAHEAD", @typeahead);
$ENV{PERLDB_RESTART} = 1;
+ delete $ENV{PERLDB_PIDS}; # Restore ini state
+ $ENV{PERLDB_PIDS} = $ini_pids if defined $ini_pids;
#print "$^X, '-d', @flags, @script, ($slave_editor ? '-emacs' : ()), @ARGS";
- exec $^X, '-d', @flags, @script, ($slave_editor ? '-emacs' : ()), @ARGS;
+ exec($^X, '-d', @flags, @script, ($slave_editor ? '-emacs' : ()), @ARGS) ||
print $OUT "exec failed: $!\n";
last CMD; };
$cmd =~ /^T$/ && do {
}
}
next CMD; };
+ $cmd =~ /^\@\s*(.*\S)/ && do {
+ if (open my $fh, $1) {
+ push @cmdfhs, $fh;
+ }
+ else {
+ &warn("Can't execute `$1': $!\n");
+ }
+ next CMD; };
$cmd =~ /^\|\|?\s*[^|]/ && do {
if ($pager =~ /^\|/) {
open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT");
$piped= "";
}
} # CMD:
- $exiting = 1 unless defined $cmd;
+ $fall_off_end = 1 unless defined $cmd; # Emulate `q' on EOF
foreach $evalarg (@$post) {
&eval;
}
$single &= 1;
$single |= 4 if $stack_depth == $deep;
($frame & 4
- ? ( (print $LINEINFO ' ' x ($stack_depth - 1), "in "),
+ ? ( print_lineinfo(' ' x ($stack_depth - 1), "in "),
# Why -1? But it works! :-(
print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
- : print $LINEINFO ' ' x ($stack_depth - 1), "entering $sub$al\n") if $frame;
+ : print_lineinfo(' ' x ($stack_depth - 1), "entering $sub$al\n")) if $frame;
if (wantarray) {
@ret = &$sub;
$single |= $stack[$stack_depth--];
($frame & 4
- ? ( (print $LINEINFO ' ' x $stack_depth, "out "),
+ ? ( print_lineinfo(' ' x $stack_depth, "out "),
print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
- : print $LINEINFO ' ' x $stack_depth, "exited $sub$al\n") if $frame & 2;
+ : print_lineinfo(' ' x $stack_depth, "exited $sub$al\n")) if $frame & 2;
if ($doret eq $stack_depth or $frame & 16) {
my $fh = ($doret eq $stack_depth ? $OUT : $LINEINFO);
print $fh ' ' x $stack_depth if $frame & 16;
};
$single |= $stack[$stack_depth--];
($frame & 4
- ? ( (print $LINEINFO ' ' x $stack_depth, "out "),
+ ? ( print_lineinfo(' ' x $stack_depth, "out "),
print_trace($LINEINFO, -1, 1, 1, "$sub$al") )
- : print $LINEINFO ' ' x $stack_depth, "exited $sub$al\n") if $frame & 2;
+ : print_lineinfo(' ' x $stack_depth, "exited $sub$al\n")) if $frame & 2;
if ($doret eq $stack_depth or $frame & 16 and defined wantarray) {
my $fh = ($doret eq $stack_depth ? $OUT : $LINEINFO);
print $fh (' ' x $stack_depth) if $frame & 16;
}
}
+### The API section
+
+### Functions with multiple modes of failure die on error, the rest
+### returns FALSE on error.
+### User-interface functions cmd_* output error message.
+
+sub break_on_load {
+ my $file = shift;
+ $break_on_load{$file} = 1;
+ $had_breakpoints{$file} |= 1;
+}
+
+sub report_break_on_load {
+ sort keys %break_on_load;
+}
+
+sub cmd_b_load {
+ my $file = shift;
+ my @files;
+ {
+ push @files, $file;
+ push @files, $::INC{$file} if $::INC{$file};
+ $file .= '.pm', redo unless $file =~ /\./;
+ }
+ break_on_load($_) for @files;
+ @files = report_break_on_load;
+ print $OUT "Will stop on load of `@files'.\n";
+}
+
+$filename_error = '';
+
+sub breakable_line {
+ my ($from, $to) = @_;
+ my $i = $from;
+ if (@_ >= 2) {
+ my $delta = $from < $to ? +1 : -1;
+ my $limit = $delta > 0 ? $#dbline : 1;
+ $limit = $to if ($limit - $to) * $delta > 0;
+ $i += $delta while $dbline[$i] == 0 and ($limit - $i) * $delta > 0;
+ }
+ return $i unless $dbline[$i] == 0;
+ my ($pl, $upto) = ('', '');
+ ($pl, $upto) = ('s', "..$to") if @_ >=2 and $from != $to;
+ die "Line$pl $from$upto$filename_error not breakable\n";
+}
+
+sub breakable_line_in_filename {
+ my ($f) = shift;
+ local *dbline = $main::{'_<' . $f};
+ local $filename_error = " of `$f'";
+ breakable_line(@_);
+}
+
+sub break_on_line {
+ my ($i, $cond) = @_;
+ $cond = 1 unless @_ >= 2;
+ my $inii = $i;
+ my $after = '';
+ my $pl = '';
+ die "Line $i$filename_error not breakable.\n" if $dbline[$i] == 0;
+ $had_breakpoints{$filename} |= 1;
+ if ($dbline{$i}) { $dbline{$i} =~ s/^[^\0]*/$cond/; }
+ else { $dbline{$i} = $cond; }
+}
+
+sub cmd_b_line {
+ eval { break_on_line(@_); 1 } or print $OUT $@ and return;
+}
+
+sub break_on_filename_line {
+ my ($f, $i, $cond) = @_;
+ $cond = 1 unless @_ >= 3;
+ local *dbline = $main::{'_<' . $f};
+ local $filename_error = " of `$f'";
+ local $filename = $f;
+ break_on_line($i, $cond);
+}
+
+sub break_on_filename_line_range {
+ my ($f, $from, $to, $cond) = @_;
+ my $i = breakable_line_in_filename($f, $from, $to);
+ $cond = 1 unless @_ >= 3;
+ break_on_filename_line($f,$i,$cond);
+}
+
+sub subroutine_filename_lines {
+ my ($subname,$cond) = @_;
+ # Filename below can contain ':'
+ find_sub($subname) =~ /^(.*):(\d+)-(\d+)$/;
+}
+
+sub break_subroutine {
+ my $subname = shift;
+ my ($file,$s,$e) = subroutine_filename_lines($subname) or
+ die "Subroutine $subname not found.\n";
+ $cond = 1 unless @_ >= 2;
+ break_on_filename_line_range($file,$s,$e,@_);
+}
+
+sub cmd_b_sub {
+ my ($subname,$cond) = @_;
+ $cond = 1 unless @_ >= 2;
+ unless (ref $subname eq 'CODE') {
+ $subname =~ s/\'/::/g;
+ my $s = $subname;
+ $subname = "${'package'}::" . $subname
+ unless $subname =~ /::/;
+ $subname = "CORE::GLOBAL::$s"
+ if not defined &$subname and $s !~ /::/ and defined &{"CORE::GLOBAL::$s"};
+ $subname = "main".$subname if substr($subname,0,2) eq "::";
+ }
+ eval { break_subroutine($subname,$cond); 1 } or print $OUT $@ and return;
+}
+
+sub cmd_stop { # As on ^C, but not signal-safy.
+ $signal = 1;
+}
+
+sub delete_breakpoint {
+ my $i = shift;
+ die "Line $i not breakable.\n" if $dbline[$i] == 0;
+ $dbline{$i} =~ s/^[^\0]*//;
+ delete $dbline{$i} if $dbline{$i} eq '';
+}
+
+sub cmd_d {
+ my $i = shift;
+ eval { delete_breakpoint $i; 1 } or print $OUT $@ and return;
+}
+
+### END of the API section
+
sub save {
@saved = ($@, $!, $^E, $,, $/, $\, $^W);
$, = ""; $/ = "\n"; $\ = ""; $^W = 0;
}
+sub print_lineinfo {
+ resetterm(1) if $LINEINFO eq $OUT and $term_pid != $$;
+ print $LINEINFO @_;
+}
+
# The following takes its argument via $evalarg to preserve current @_
sub eval {
# 'my' would make it visible from user code
- # but so does local! --tchrist
- local @res;
+ # but so does local! --tchrist [... into @DB::res, not @res. IZ]
+ local @res;
{
local $otrace = $trace;
local $osingle = $single;
local $od = $^D;
+ { ($evalarg) = $evalarg =~ /(.*)/s; }
@res = eval "$usercontext $evalarg;\n"; # '\n' for nice recursive debug
$trace = $otrace;
$single = $osingle;
eval { &DB::save };
if ($at) {
print $OUT $at;
- } elsif ($onetimeDump eq 'dump') {
- dumpit($OUT, \@res);
- } elsif ($onetimeDump eq 'methods') {
- methods($res[0]);
+ } elsif ($onetimeDump) {
+ dumpit($OUT, \@res) if $onetimeDump eq 'dump';
+ methods($res[0]) if $onetimeDump eq 'methods';
}
@res;
}
$filename =~ s/^_<//;
$signal = 1, print $OUT "'$filename' loaded...\n"
if $break_on_load{$filename};
- print $LINEINFO ' ' x $stack_depth, "Package $filename.\n" if $frame;
+ print_lineinfo(' ' x $stack_depth, "Package $filename.\n") if $frame;
return unless $postponed_file{$filename};
$had_breakpoints{$filename} |= 1;
#%dbline = %{$postponed_file{$filename}}; # Cannot be done: unsufficient magic
sub print_trace {
my $fh = shift;
+ resetterm(1) if $fh eq $LINEINFO and $LINEINFO eq $OUT and $term_pid != $$;
my @sub = dump_trace($_[0] + 1, $_[1]);
my $short = $_[2]; # Print short report, next one for sub name
my $s;
eval { require Term::ReadLine } or die $@;
if ($notty) {
if ($tty) {
- open(IN,"<$tty") or die "Cannot open TTY `$TTY' for read: $!";
- open(OUT,">$tty") or die "Cannot open TTY `$TTY' for write: $!";
+ my ($i, $o) = split $tty, /,/;
+ $o = $i unless defined $o;
+ open(IN,"<$i") or die "Cannot open TTY `$i' for read: $!";
+ open(OUT,">$o") or die "Cannot open TTY `$o' for write: $!";
$IN = \*IN;
$OUT = \*OUT;
my $sel = select($OUT);
$OUT = $term_rv->OUT;
}
}
+ if ($term_pid eq '-1') { # In a TTY with another debugger
+ resetterm(2);
+ }
if (!$rl) {
$term = new Term::ReadLine::Stub 'perldb', $IN, $OUT;
} else {
$term_pid = $$;
}
-sub resetterm { # We forked, so we need a different TTY
- $term_pid = $$;
- if (defined &get_fork_TTY) {
- &get_fork_TTY;
- } elsif (not defined $fork_TTY
- and defined $ENV{TERM} and $ENV{TERM} eq 'xterm'
- and defined $ENV{WINDOWID} and defined $ENV{DISPLAY}) {
- # Possibly _inside_ XTERM
- open XT, q[3>&1 xterm -title 'Forked Perl debugger' -e sh -c 'tty 1>&3;\
+# Example get_fork_TTY functions
+sub xterm_get_fork_TTY {
+ (my $name = $0) =~ s,^.*[/\\],,s;
+ open XT, qq[3>&1 xterm -title "Daughter Perl debugger $pids $name" -e sh -c 'tty 1>&3;\
sleep 10000000' |];
- $fork_TTY = <XT>;
- chomp $fork_TTY;
- }
- if (defined $fork_TTY) {
- TTY($fork_TTY);
- undef $fork_TTY;
- } else {
+ my $tty = <XT>;
+ chomp $tty;
+ $pidprompt = ''; # Shown anyway in titlebar
+ return $tty;
+}
+
+# This one resets $IN, $OUT itself
+sub os2_get_fork_TTY {
+ $^F = 40; # XXXX Fixme!
+ my ($in1, $out1, $in2, $out2);
+ # Having -d in PERL5OPT would lead to a disaster...
+ local $ENV{PERL5OPT} = $ENV{PERL5OPT} if $ENV{PERL5OPT};
+ $ENV{PERL5OPT} =~ s/(?:^|(?<=\s))-d\b// if $ENV{PERL5OPT};
+ $ENV{PERL5OPT} =~ s/(?:^|(?<=\s))-d\B/-/ if $ENV{PERL5OPT};
+ print $OUT "Making PERL5OPT->`$ENV{PERL5OPT}'.\n" if $ENV{PERL5OPT};
+ (my $name = $0) =~ s,^.*[/\\],,s;
+ if ( pipe $in1, $out1 and pipe $in2, $out2 and
+ # system P_SESSION will fail if there is another process
+ # in the same session with a "dependent" asynchronous child session.
+ (($kpid = CORE::system 4, $^X, '-we', <<'ES', fileno $in1, fileno $out2, "Daughter Perl debugger $pids $name") >= 0 or warn "system P_SESSION: $!, $^E" and 0) # P_SESSION
+use Term::ReadKey;
+use OS2::Process;
+
+my $in = shift; # Read from here and pass through
+set_title pop;
+system P_NOWAIT, $^X, '-we', <<EOS or die "Cannot start a grandkid";
+ open IN, '<&=$in' or die "open <&=$in: \$!";
+ \$| = 1; print while sysread IN, \$_, 1<<16;
+EOS
+
+my $out = shift;
+open OUT, ">&=$out" or die "Cannot open &=$out for writing: $!";
+select OUT; $| = 1;
+ReadMode 4; # Nodelay on kbd. Pipe is automatically nodelay...
+print while sysread STDIN, $_, 1<<16;
+ES
+ and close $in1 and close $out2 ) {
+ $pidprompt = ''; # Shown anyway in titlebar
+ reset_IN_OUT($in2, $out1);
+ $tty = '*reset*';
+ return ''; # Indicate that reset_IN_OUT is called
+ }
+ return;
+}
+
+sub create_IN_OUT { # Create a window with IN/OUT handles redirected there
+ my $in = &get_fork_TTY if defined &get_fork_TTY;
+ $in = $fork_TTY if defined $fork_TTY; # Backward compatibility
+ if (not defined $in) {
+ my $why = shift;
+ print_help(<<EOP) if $why == 1;
+I<#########> Forked, but do not know how to create a new B<TTY>. I<#########>
+EOP
+ print_help(<<EOP) if $why == 2;
+I<#########> Daughter session, do not know how to change a B<TTY>. I<#########>
+ This may be an asynchronous session, so the parent debugger may be active.
+EOP
+ print_help(<<EOP) if $why != 4;
+ Since two debuggers fight for the same TTY, input is severely entangled.
+
+EOP
print_help(<<EOP);
-I<#########> Forked, but do not know how to change a B<TTY>. I<#########>
- Define B<\$DB::fork_TTY>
- - or a function B<DB::get_fork_TTY()> which will set B<\$DB::fork_TTY>.
- The value of B<\$DB::fork_TTY> should be the name of I<TTY> to use.
+ I know how to switch the output to a different window in xterms
+ and OS/2 consoles only. For a manual switch, put the name of the created I<TTY>
+ in B<\$DB::fork_TTY>, or define a function B<DB::get_fork_TTY()> returning this.
+
On I<UNIX>-like systems one can get the name of a I<TTY> for the given window
by typing B<tty>, and disconnect the I<shell> from I<TTY> by B<sleep 1000000>.
+
EOP
+ } elsif ($in ne '') {
+ TTY($in);
}
+ undef $fork_TTY;
+}
+
+sub resetterm { # We forked, so we need a different TTY
+ my $in = shift;
+ my $systemed = $in > 1 ? '-' : '';
+ if ($pids) {
+ $pids =~ s/\]/$systemed->$$]/;
+ } else {
+ $pids = "[$term_pid->$$]";
+ }
+ $pidprompt = $pids;
+ $term_pid = $$;
+ return unless $CreateTTY & $in;
+ create_IN_OUT($in);
}
sub readline {
}
local $frame = 0;
local $doret = -2;
+ while (@cmdfhs) {
+ my $line = CORE::readline($cmdfhs[-1]);
+ defined $line ? (print $OUT ">> $line" and return $line)
+ : close pop @cmdfhs;
+ }
if (ref $OUT and UNIVERSAL::isa($OUT, 'IO::Socket::INET')) {
$OUT->write(join('', @_));
my $stuff;
} else {
$val = $option{$opt};
}
+ $val = $default unless defined $val;
$val
}
# too dangerous to let intuitive usage overwrite important things
# defaultion should never be the default
my %opt_needs_val = map { ( $_ => 1 ) } qw{
- arrayDepth hashDepth LineInfo maxTraceLen ornaments
+ arrayDepth hashDepth LineInfo maxTraceLen ornaments windowSize
pager quote ReadLine recallCommand RemotePort ShellBang TTY
};
while (length) {
print $OUT $msg;
}
+sub reset_IN_OUT {
+ my $switch_li = $LINEINFO eq $OUT;
+ if ($term and $term->Features->{newTTY}) {
+ ($IN, $OUT) = (shift, shift);
+ $term->newTTY($IN, $OUT);
+ } elsif ($term) {
+ &warn("Too late to set IN/OUT filehandles, enabled on next `R'!\n");
+ } else {
+ ($IN, $OUT) = (shift, shift);
+ }
+ my $o = select $OUT;
+ $| = 1;
+ select $o;
+ $LINEINFO = $OUT if $switch_li;
+}
+
sub TTY {
if (@_ and $term and $term->Features->{newTTY}) {
my ($in, $out) = shift;
}
open IN, $in or die "cannot open `$in' for read: $!";
open OUT, ">$out" or die "cannot open `$out' for write: $!";
- $term->newTTY(\*IN, \*OUT);
- $IN = \*IN;
- $OUT = \*OUT;
+ reset_IN_OUT(\*IN,\*OUT);
return $tty = $in;
- } elsif ($term and @_) {
- &warn("Too late to set TTY, enabled on next `R'!\n");
- }
+ }
+ &warn("Too late to set TTY, enabled on next `R'!\n") if $term and @_;
+ # Useful if done through PERLDB_OPTS:
$tty = shift if @_;
$tty or $console;
}
$psh = $sh;
$psh =~ s/\\b$//;
$psh =~ s/\\(.)/$1/g;
- &sethelp;
$psh;
}
$prc = $rc;
$prc =~ s/\\b$//;
$prc =~ s/\\(.)/$1/g;
- &sethelp;
$prc;
}
}
sub sethelp {
- # XXX: make sure these are tabs between the command and explantion,
+ # XXX: make sure there are tabs between the command and explanation,
# or print_help will screw up your formatting if you have
# eeevil ornaments enabled. This is an insane mess.
B<>>B<>> I<expr> Add to the list of Perl commands to run after each prompt.
B<{> I<db_command> Define debugger command to run before each prompt.
B<{> ? List debugger commands to run before each prompt.
-B<<> I<expr> Define Perl command to run before each prompt.
B<{{> I<db_command> Add to the list of debugger commands to run before each prompt.
B<$prc> I<number> Redo a previous command (default previous command).
B<$prc> I<-number> Redo number'th-to-last command.
. ( $rc eq $sh ? "" : "
B<$psh> [I<cmd>] Run I<cmd> in subshell (forces \"\$SHELL -c 'cmd'\")." ) . "
See 'B<O> I<shellBang>' too.
+B<@>I<file> Execute I<file> containing debugger commands (may nest).
B<H> I<-number> Display last number commands (default all).
B<p> I<expr> Same as \"I<print {DB::OUT} expr>\" in current package.
B<|>I<dbcmd> Run debugger command, piping DB::OUT to current pager.
B<v> Show versions of loaded modules.
B<R> Pure-man-restart of debugger, some of debugger state
and command-line options may be lost.
- Currently the following setting are preserved:
+ Currently the following settings are preserved:
history, breakpoints and actions, debugger B<O>ptions
and the following command-line options: I<-w>, I<-I>, I<-e>.
I<bareStringify> Do not print the overload-stringified value;
Other options include:
I<PrintRet> affects printing of return value after B<r> command,
- I<frame> affects printing messages on entry and exit from subroutines.
- I<AutoTrace> affects printing messages on every possible breaking point.
- I<maxTraceLen> gives maximal length of evals/args listed in stack trace.
+ I<frame> affects printing messages on subroutine entry/exit.
+ I<AutoTrace> affects printing messages on possible breaking points.
+ I<maxTraceLen> gives max length of evals/args listed in stack trace.
I<ornaments> affects screen appearance of the command line.
+ I<CreateTTY> bits control attempts to create a new TTY on events:
+ 1: on fork() 2: debugger is started inside debugger
+ 4: on startup
During startup options are initialized from \$ENV{PERLDB_OPTS}.
You can put additional initialization options I<TTY>, I<noTTY>,
I<ReadLine>, I<NonStop>, and I<RemotePort> there (or use
Type `|h' for a paged display if this was too hard to read.
-"; # Fix balance of vi % matching: } }}
+"; # Fix balance of vi % matching: }}}}
+ # note: tabs in the following section are not-so-helpful
$summary = <<"END_SUM";
I<List/search source lines:> I<Control script execution:>
B<l> [I<ln>|I<sub>] List source code B<T> Stack trace
B<w> [I<line>] List around line B<n> [I<expr>] Next, steps over subs
B<f> I<filename> View source in file <B<CR>/B<Enter>> Repeat last B<n> or B<s>
B</>I<pattern>B</> B<?>I<patt>B<?> Search forw/backw B<r> Return from subroutine
- B<v> Show versions of modules B<c> [I<ln>|I<sub>] Continue until position
+ B<v> Show versions of modules B<c> [I<ln>|I<sub>] Continue until position
I<Debugger controls:> B<L> List break/watch/actions
B<O> [...] Set debugger options B<t> [I<expr>] Toggle trace [trace expr]
B<<>[B<<>]|B<{>[B<{>]|B<>>[B<>>] [I<cmd>] Do pre/post-prompt B<b> [I<ln>|I<event>|I<sub>] [I<cnd>] Set breakpoint
B<=> [I<a> I<val>] Define/list an alias B<W> I<expr> Add a watch expression
B<h> [I<db_cmd>] Get help on command B<A> or B<W> Delete all actions/watch
B<|>[B<|>]I<db_cmd> Send output to pager B<$psh>\[B<$psh>\] I<syscmd> Run cmd in a subprocess
- B<q> or B<^D> Quit B<R> Attempt a restart
-I<Data Examination:> B<expr> Execute perl code, also see: B<s>,B<n>,B<t> I<expr>
- B<x>|B<m> I<expr> Evals expr in list context, dumps the result or lists methods.
- B<p> I<expr> Print expression (uses script's current package).
- B<S> [[B<!>]I<pat>] List subroutine names [not] matching pattern
- B<V> [I<Pk> [I<Vars>]] List Variables in Package. Vars can be ~pattern or !pattern.
- B<X> [I<Vars>] Same as \"B<V> I<current_package> [I<Vars>]\".
+ B<q> or B<^D> Quit B<R> Attempt a restart
+I<Data Examination:> B<expr> Execute perl code, also see: B<s>,B<n>,B<t> I<expr>
+ B<x>|B<m> I<expr> Evals expr in list context, dumps the result or lists methods.
+ B<p> I<expr> Print expression (uses script's current package).
+ B<S> [[B<!>]I<pat>] List subroutine names [not] matching pattern
+ B<V> [I<Pk> [I<Vars>]] List Variables in Package. Vars can be ~pattern or !pattern.
+ B<X> [I<Vars>] Same as \"B<V> I<current_package> [I<Vars>]\".
For more help, type B<h> I<cmd_letter>, or run B<$doccmd perldebug> for all docs.
END_SUM
# ')}}; # Fix balance of vi % matching
# ornaments: A pox on both their houses!
#
# A help command will have everything up to and including
- # the first tab sequence paddeed into a field 16 (or if indented 20)
- # wide. If it's wide than that, an extra space will be added.
+ # the first tab sequence padded into a field 16 (or if indented 20)
+ # wide. If it's wider than that, an extra space will be added.
s{
^ # only matters at start of line
( \040{4} | \t )* # some subcommands are indented
my $clean = $command;
$clean =~ s/[BI]<([^>]*)>/$1/g;
# replace with this whole string:
- (length($leadwhite) ? " " x 4 : "")
+ ($leadwhite ? " " x 4 : "")
. $command
- . ((" " x (16 + (length($leadwhite) ? 4 : 0) - length($clean))) || " ")
+ . ((" " x (16 + ($leadwhite ? 4 : 0) - length($clean))) || " ")
. $text;
}mgex;
local $SIG{__DIE__} = '';
eval { require Carp } if defined $^S; # If error/warning during compilation,
# require may be broken.
- warn(@_, "\nCannot print stack trace, load with -MCarp option to see stack"),
+ CORE::warn(@_, "\nCannot print stack trace, load with -MCarp option to see stack"),
return unless defined &Carp::longmess;
my ($mysingle,$mytrace) = ($single,$trace);
$single = 0; $trace = 0;
if ($dieLevel < 2) {
die @_ if $^S; # in eval propagate
}
- eval { require Carp } if defined $^S; # If error/warning during compilation,
+ # No need to check $^S, eval is much more robust nowadays
+ eval { require Carp }; #if defined $^S;# If error/warning during compilation,
# require may be broken.
die(@_, "\nCannot print stack trace, load with -MCarp option to see stack")
# inside DB::DB, but not in Carp).
my ($mysingle,$mytrace) = ($single,$trace);
$single = 0; $trace = 0;
- my $mess = Carp::longmess(@_);
+ my $mess = "@_";
+ {
+ package Carp; # Do not include us in the list
+ eval {
+ $mess = Carp::longmess(@_);
+ };
+ }
($single,$trace) = ($mysingle,$mytrace);
die $mess;
}
$warnLevel = shift;
if ($warnLevel) {
$SIG{__WARN__} = \&DB::dbwarn;
- } else {
+ } elsif ($prevwarn) {
$SIG{__WARN__} = $prevwarn;
}
}
( $dieLevel == 1 ? " outside of evals" : ""), ".\n"
if $I_m_init;
print $OUT "Dump printed too.\n" if $dieLevel > 2;
- } else {
+ } elsif ($prevdie) {
$SIG{__DIE__} = $prevdie;
print $OUT "Default die handler restored.\n";
}
sub CvGV_name_or_bust {
my $in = shift;
return if $skipCvGV; # Backdoor to avoid problems if XS broken...
+ return unless ref $in;
$in = \&$in; # Hard reference...
eval {require Devel::Peek; 1} or return;
my $gv = Devel::Peek::CvGV($in) or return;
}
sub setman {
- $doccmd = $^O !~ /^(?:MSWin32|VMS|os2|dos|amigaos|riscos|MacOS)\z/s
+ $doccmd = $^O !~ /^(?:MSWin32|VMS|os2|dos|amigaos|riscos|MacOS|NetWare)\z/s
? "man" # O Happy Day!
: "perldoc"; # Alas, poor unfortunates
}
my $oldpath = $ENV{MANPATH};
$ENV{MANPATH} = $manpath if $manpath;
my $nopathopt = $^O =~ /dunno what goes here/;
- if (system($doccmd,
+ if (CORE::system($doccmd,
# I just *know* there are men without -M
(($manpath && !$nopathopt) ? ("-M", $manpath) : ()),
split ' ', $page) )
})
{
$page =~ s/^/perl/;
- system($doccmd,
+ CORE::system($doccmd,
(($manpath && !$nopathopt) ? ("-M", $manpath) : ()),
$page);
}
BEGIN {$^W = $ini_warn;} # Switch warnings back
-#use Carp; # This did break, left for debuggin
+#use Carp; # This did break, left for debugging
sub db_complete {
# Specific code for b c l V m f O, &blah, $blah, @blah, %blah
}
END {
- $finished = $inhibit_exit; # So that some keys may be disabled.
+ $finished = 1 if $inhibit_exit; # So that some keys may be disabled.
+ $fall_off_end = 1 unless $inhibit_exit;
# Do not stop in at_exit() and destructors on exit:
- $DB::single = !$exiting && !$runnonstop;
- DB::fake::at_exit() unless $exiting or $runnonstop;
+ $DB::single = !$fall_off_end && !$runnonstop;
+ DB::fake::at_exit() unless $fall_off_end or $runnonstop;
}
package DB::fake;
https://perl5.git.perl.org / perl5.git / blobdiff