2 # The system variables - those indicated will need to be changed to suit your
3 # circumstances (and callsign)
5 # Copyright (c) 1998-2019 - Dirk Koopman G1TLH
7 # Note: Everything is recorded into the ring buffer (in perl terms: a numerically max sized array).
8 # To allow debugging of a category (e.g. 'chan') but not onto disc (just into the ring buffer)
9 # do: set/debug chan nologchan
11 # To print the current contents into the debug log: show/debug_ring
13 # On exit or serious error the ring buffer is printed to the current debug log
16 # Expose a localhost listener on port (default) 27755 to things like watchdbg so that they can carry on
17 # as normal, possibly with a "remember" button to permanently capture stuff observed.
20 # This is likely to be some form of triggering or filtering controlling (some portion
21 # of) ring_buffer dumping.
29 @EXPORT = qw(dbginit dbg dbgadd dbgsub dbglist dbgdump isdbg dbgclose confess croak cluck);
32 use vars qw(%dbglevel $fp $callback $cleandays $keepdays $dbgringlth);
46 our $no_stdout; # set if not running in a terminal
49 # Avoid generating "subroutine redefined" warnings with the following
50 # hack (from CGI::Carp):
51 if (!defined $DB::VERSION) {
53 eval qq( sub confess {
54 \$SIG{__DIE__} = 'DEFAULT';
55 DXDebug::dbgprintring() unless DXDebug::isdbg('chan');
56 DXDebug::dbgclearring();
58 DXDebug::dbg(Carp::shortmess(\@_));
62 \$SIG{__DIE__} = 'DEFAULT';
63 DXDebug::dbgprintring() unless DXDebug::isdbg('chan');
64 DXDebug::dbgclearring();
66 DXDebug::dbg(Carp::longmess(\@_));
69 sub carp { DXDebug::dbg(Carp::shortmess(\@_)); }
70 sub cluck { DXDebug::dbg(Carp::longmess(\@_)); }
73 CORE::die(Carp::shortmess($@)) if $@;
76 eval qq( sub confess { die Carp::longmess(\@_); };
77 sub croak { die Carp::shortmess(\@_); };
78 sub cluck { warn Carp::longmess(\@_); };
79 sub carp { warn Carp::shortmess(\@_); };
84 my $_isdbg; # current dbg level we are processing
93 my @l = split /\n/, $r;
95 s/([\x00-\x08\x0B-\x1f\x7f-\xff])/uc sprintf("%%%02x",ord($1))/eg;
96 print "$_\n" if defined \*STDOUT && !$no_stdout;
98 &$callback($str) if $callback;
100 shift @dbgring while (@dbgring > $dbgringlth);
103 $fp->writeunix($t, $str) unless $dbglevel{"nolog$_isdbg"};
113 # add sig{__DIE__} handling
114 unless (defined $DB::VERSION) {
115 $SIG{__WARN__} = sub {
116 if ($_[0] =~ /Deep\s+recursion/i) {
118 dbg(Carp::longmess(@_));
123 dbg(Carp::shortmess(@_));
127 $SIG{__DIE__} = sub { dbg($@); dbg(Carp::longmess(@_)); };
129 # switch off STDOUT printing if we are not talking to a TTY
130 unless ($^O =~ /^MS/ || $^O =~ /^OS-2/) {
131 unless (isatty(STDOUT->fileno)) {
137 $fp = DXLog::new('debug', 'dat', 'd');
143 $SIG{__DIE__} = $SIG{__WARN__} = 'DEFAULT';
145 dbgprintring() if grep /nolog/, keys %dbglevel;
158 if ($dbglevel{$l} || $l eq 'err') {
160 for (my $o = 0; $o < length $l; $o += 16) {
161 my $c = substr $l, $o, 16;
162 my $h = unpack "H*", $c;
163 $c =~ s/[\x00-\x1f\x7f-\xff]/./g;
164 my $left = 16 - length $c;
165 $h .= ' ' x (2 * $left) if $left > 0;
166 dbg($m . sprintf("%4d:", $o) . "$h $c");
167 $m = ' ' x (length $m);
177 foreach $entry (@_) {
178 $dbglevel{$entry} = 1;
186 foreach $entry (@_) {
187 delete $dbglevel{$entry};
193 return keys (%dbglevel);
199 if ($dbglevel{$_[0]}) {
207 return Carp::shortmess(@_);
212 return Carp::longmess(@_);
219 while (my $l = shift @dbgring) {
220 my ($t, $str) = split /\^/, $l, 2;
224 $fp->writeunix($lt, "$lt^###");
225 $fp->writeunix($lt, "$lt^### RINGBUFFER START");
226 $fp->writeunix($lt, "$lt^###");
229 my $buf = sprintf "%02d:%02d:%02d", (gmtime($t))[2,1,0];
230 $fp->writeunix($lt, "$lt^RING: $buf^$str");
233 $fp->writeunix($et, "$et^###");
234 $fp->writeunix($et, "$et^### RINGBUFFER END");
235 $fp->writeunix($et, "$et^###");
243 # clean out old debug files, stop when you get a gap of more than a month
246 my $date = $fp->unixtoj($main::systime)->sub($keepdays+1);
250 my $fn = $fp->_genfn($date);
258 $date = $date->sub(1);