Filename | /usr/local/share/perl/5.18.2/Plack/Middleware/StackTrace.pm |
Statements | Executed 1000030 statements in 5.82s |
Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
---|---|---|---|---|---|
100001 | 1 | 1 | 4.91s | 908s | call | Plack::Middleware::StackTrace::
1 | 1 | 1 | 1.34ms | 5.28ms | BEGIN@6 | Plack::Middleware::StackTrace::
1 | 1 | 1 | 1.13ms | 1.98ms | BEGIN@5 | Plack::Middleware::StackTrace::
1 | 1 | 1 | 14µs | 29µs | BEGIN@2 | Plack::Middleware::StackTrace::
1 | 1 | 1 | 9µs | 30µs | BEGIN@9 | Plack::Middleware::StackTrace::
1 | 1 | 1 | 8µs | 36µs | BEGIN@8 | Plack::Middleware::StackTrace::
1 | 1 | 1 | 7µs | 13µs | BEGIN@3 | Plack::Middleware::StackTrace::
1 | 1 | 1 | 7µs | 31µs | BEGIN@7 | Plack::Middleware::StackTrace::
1 | 1 | 1 | 6µs | 26µs | BEGIN@4 | Plack::Middleware::StackTrace::
0 | 0 | 0 | 0s | 0s | __ANON__[:14] | Plack::Middleware::StackTrace::
0 | 0 | 0 | 0s | 0s | __ANON__[:34] | Plack::Middleware::StackTrace::
0 | 0 | 0 | 0s | 0s | __ANON__[:39] | Plack::Middleware::StackTrace::
0 | 0 | 0 | 0s | 0s | __ANON__[:42] | Plack::Middleware::StackTrace::
0 | 0 | 0 | 0s | 0s | munge_error | Plack::Middleware::StackTrace::
0 | 0 | 0 | 0s | 0s | no_trace_error | Plack::Middleware::StackTrace::
0 | 0 | 0 | 0s | 0s | utf8_safe | Plack::Middleware::StackTrace::
Line | State ments |
Time on line |
Calls | Time in subs |
Code |
---|---|---|---|---|---|
1 | package Plack::Middleware::StackTrace; | ||||
2 | 2 | 27µs | 2 | 44µs | # spent 29µs (14+15) within Plack::Middleware::StackTrace::BEGIN@2 which was called:
# once (14µs+15µs) by Plack::Util::load_class at line 2 # spent 29µs making 1 call to Plack::Middleware::StackTrace::BEGIN@2
# spent 15µs making 1 call to strict::import |
3 | 2 | 25µs | 2 | 20µs | # spent 13µs (7+6) within Plack::Middleware::StackTrace::BEGIN@3 which was called:
# once (7µs+6µs) by Plack::Util::load_class at line 3 # spent 13µs making 1 call to Plack::Middleware::StackTrace::BEGIN@3
# spent 6µs making 1 call to warnings::import |
4 | 2 | 21µs | 2 | 46µs | # spent 26µs (6+20) within Plack::Middleware::StackTrace::BEGIN@4 which was called:
# once (6µs+20µs) by Plack::Util::load_class at line 4 # spent 26µs making 1 call to Plack::Middleware::StackTrace::BEGIN@4
# spent 20µs making 1 call to parent::import |
5 | 2 | 120µs | 1 | 1.98ms | # spent 1.98ms (1.13+844µs) within Plack::Middleware::StackTrace::BEGIN@5 which was called:
# once (1.13ms+844µs) by Plack::Util::load_class at line 5 # spent 1.98ms making 1 call to Plack::Middleware::StackTrace::BEGIN@5 |
6 | 2 | 492µs | 1 | 5.28ms | # spent 5.28ms (1.34+3.93) within Plack::Middleware::StackTrace::BEGIN@6 which was called:
# once (1.34ms+3.93ms) by Plack::Util::load_class at line 6 # spent 5.28ms making 1 call to Plack::Middleware::StackTrace::BEGIN@6 |
7 | 2 | 23µs | 2 | 56µs | # spent 31µs (7+24) within Plack::Middleware::StackTrace::BEGIN@7 which was called:
# once (7µs+24µs) by Plack::Util::load_class at line 7 # spent 31µs making 1 call to Plack::Middleware::StackTrace::BEGIN@7
# spent 24µs making 1 call to Exporter::import |
8 | 2 | 24µs | 2 | 64µs | # spent 36µs (8+28) within Plack::Middleware::StackTrace::BEGIN@8 which was called:
# once (8µs+28µs) by Plack::Util::load_class at line 8 # spent 36µs making 1 call to Plack::Middleware::StackTrace::BEGIN@8
# spent 28µs making 1 call to Exporter::import |
9 | 2 | 447µs | 2 | 50µs | # spent 30µs (9+21) within Plack::Middleware::StackTrace::BEGIN@9 which was called:
# once (9µs+21µs) by Plack::Util::load_class at line 9 # spent 30µs making 1 call to Plack::Middleware::StackTrace::BEGIN@9
# spent 21µs making 1 call to Plack::Util::Accessor::import |
10 | |||||
11 | 1 | 500ns | our $StackTraceClass = "Devel::StackTrace"; | ||
12 | |||||
13 | # Optional since it needs PadWalker | ||||
14 | 2 | 55µs | 1 | 72µs | if (try { require Devel::StackTrace::WithLexicals; Devel::StackTrace::WithLexicals->VERSION(0.08); 1 }) { # spent 72µs making 1 call to Try::Tiny::try |
15 | $StackTraceClass = "Devel::StackTrace::WithLexicals"; | ||||
16 | } | ||||
17 | |||||
18 | # spent 908s (4.91+903) within Plack::Middleware::StackTrace::call which was called 100001 times, avg 9.08ms/call:
# 100001 times (4.91s+903s) by Plack::Component::__ANON__[/usr/local/share/perl/5.18.2/Plack/Component.pm:50] at line 50 of Plack/Component.pm, avg 9.08ms/call | ||||
19 | 100001 | 69.2ms | my($self, $env) = @_; | ||
20 | |||||
21 | 100001 | 55.1ms | my ($trace, %string_traces, %ref_traces); | ||
22 | local $SIG{__DIE__} = sub { | ||||
23 | $trace = $StackTraceClass->new( | ||||
24 | indent => 1, message => munge_error($_[0], [ caller ]), | ||||
25 | ignore_package => __PACKAGE__, no_refs => 1, | ||||
26 | ); | ||||
27 | if (ref $_[0]) { | ||||
28 | $ref_traces{refaddr($_[0])} ||= $trace; | ||||
29 | } | ||||
30 | else { | ||||
31 | $string_traces{$_[0]} ||= $trace; | ||||
32 | } | ||||
33 | die @_; | ||||
34 | 100001 | 1.12s | }; | ||
35 | |||||
36 | 100001 | 24.4ms | my $caught; | ||
37 | my $res = try { | ||||
38 | 100001 | 911ms | 200002 | 895s | $self->app->($env); # spent 895s making 100001 calls to Plack::Component::__ANON__[Plack/Component.pm:50], avg 8.94ms/call
# spent 285ms making 100001 calls to Plack::Util::Accessor::__ANON__[Plack/Util/Accessor.pm:19], avg 3µs/call |
39 | } catch { | ||||
40 | $caught = $_; | ||||
41 | [ 500, [ "Content-Type", "text/plain; charset=utf-8" ], [ no_trace_error(utf8_safe($caught)) ] ]; | ||||
42 | 100001 | 2.13s | 200002 | 903s | }; # spent 902s making 100001 calls to Try::Tiny::try, avg 9.02ms/call
# spent 1.06s making 100001 calls to Try::Tiny::catch, avg 11µs/call |
43 | |||||
44 | 100001 | 44.2ms | if ($caught) { | ||
45 | # Try to find the correct trace for the caught exception | ||||
46 | my $caught_trace; | ||||
47 | if (ref $caught) { | ||||
48 | $caught_trace = $ref_traces{refaddr($caught)}; | ||||
49 | } | ||||
50 | else { | ||||
51 | # This is not guaranteed to work if multiple exceptions with | ||||
52 | # the same message are thrown. | ||||
53 | $caught_trace = $string_traces{$caught}; | ||||
54 | } | ||||
55 | $trace = $caught_trace if $caught_trace; | ||||
56 | } | ||||
57 | |||||
58 | 100001 | 38.9ms | if ($trace && ($caught || ($self->force && ref $res eq 'ARRAY' && $res->[0] == 500)) ) { | ||
59 | my $text = $trace->as_string; | ||||
60 | my $html = $trace->as_html; | ||||
61 | $env->{'plack.stacktrace.text'} = $text; | ||||
62 | $env->{'plack.stacktrace.html'} = $html; | ||||
63 | $env->{'psgi.errors'}->print($text) unless $self->no_print_errors; | ||||
64 | if (($env->{HTTP_ACCEPT} || '*/*') =~ /html/) { | ||||
65 | $res = [500, ['Content-Type' => 'text/html; charset=utf-8'], [ utf8_safe($html) ]]; | ||||
66 | } else { | ||||
67 | $res = [500, ['Content-Type' => 'text/plain; charset=utf-8'], [ utf8_safe($text) ]]; | ||||
68 | } | ||||
69 | } | ||||
70 | |||||
71 | # break $trace here since $SIG{__DIE__} holds the ref to it, and | ||||
72 | # $trace has refs to Standalone.pm's args ($conn etc.) and | ||||
73 | # prevents garbage collection to be happening. | ||||
74 | 100001 | 53.1ms | undef $trace; | ||
75 | |||||
76 | 100001 | 1.38s | return $res; | ||
77 | } | ||||
78 | |||||
79 | sub no_trace_error { | ||||
80 | my $msg = shift; | ||||
81 | chomp($msg); | ||||
82 | |||||
83 | return <<EOF; | ||||
84 | The application raised the following error: | ||||
85 | |||||
86 | $msg | ||||
87 | |||||
88 | and the StackTrace middleware couldn't catch its stack trace, possibly because your application overrides \$SIG{__DIE__} by itself, preventing the middleware from working correctly. Remove the offending code or module that does it: known examples are CGI::Carp and Carp::Always. | ||||
89 | EOF | ||||
90 | } | ||||
91 | |||||
92 | sub munge_error { | ||||
93 | my($err, $caller) = @_; | ||||
94 | return $err if ref $err; | ||||
95 | |||||
96 | # Ugly hack to remove " at ... line ..." automatically appended by perl | ||||
97 | # If there's a proper way to do this, please let me know. | ||||
98 | $err =~ s/ at \Q$caller->[1]\E line $caller->[2]\.\n$//; | ||||
99 | |||||
100 | return $err; | ||||
101 | } | ||||
102 | |||||
103 | sub utf8_safe { | ||||
104 | my $str = shift; | ||||
105 | |||||
106 | # NOTE: I know messing with utf8:: in the code is WRONG, but | ||||
107 | # because we're running someone else's code that we can't | ||||
108 | # guarantee which encoding an exception is encoded, there's no | ||||
109 | # better way than doing this. The latest Devel::StackTrace::AsHTML | ||||
110 | # (0.08 or later) encodes high-bit chars as HTML entities, so this | ||||
111 | # path won't be executed. | ||||
112 | if (utf8::is_utf8($str)) { | ||||
113 | utf8::encode($str); | ||||
114 | } | ||||
115 | |||||
116 | $str; | ||||
117 | } | ||||
118 | |||||
119 | 1 | 3µs | 1; | ||
120 | |||||
121 | __END__ |