$ perl
use strict;
use warnings;
use Log::Log4perl qw(:easy);
Log::Log4perl->easy_init($DEBUG);
sub show_call_stack {
my $max_depth = 7;
my $i = 1; # start on 1 to skip last function call
DEBUG("--- Begin stack trace ---");
while ((my @call_details = (caller($i++))) && ($i < $max_depth)) {
DEBUG(
"$call_details[1] line $call_details[2] in function $call_detail
+s[3]");
}
DEBUG("--- End stack trace ---");
}
sub foo {
show_call_stack();
bar();
}
sub bar {
show_call_stack();
tze();
}
sub tze {
show_call_stack();
}
# ------ main ------
foo();
__END__
2008/09/26 12:16:35 --- Begin stack trace ---
2008/09/26 12:16:35 - line 33 in function main::foo
2008/09/26 12:16:35 --- End stack trace ---
2008/09/26 12:16:35 --- Begin stack trace ---
2008/09/26 12:16:35 - line 20 in function main::bar
2008/09/26 12:16:35 - line 33 in function main::foo
2008/09/26 12:16:35 --- End stack trace ---
2008/09/26 12:16:35 --- Begin stack trace ---
2008/09/26 12:16:35 - line 25 in function main::tze
2008/09/26 12:16:35 - line 20 in function main::bar
2008/09/26 12:16:35 - line 33 in function main::foo
2008/09/26 12:16:35 --- End stack trace ---
$
--
No matter how great and destructive your problems may seem now, remember, you've probably only seen the tip of them. [1]
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