Profile of overload.pm

Filename	/usr/share/perl/5.18/overload.pm
Statements	Executed 64 statements in 1.05ms

Subroutines
Calls	P	F	Exclusive Time	Inclusive Time	Subroutine
1	1	1	474µs	508µs	overload::::BEGIN@83overload::BEGIN@83
1	1	1	33µs	33µs	overload::::OVERLOADoverload::OVERLOAD
1	1	1	28µs	61µs	overload::::importoverload::import
12	1	1	20µs	20µs	overload::::AddrRefoverload::AddrRef
1	1	1	17µs	26µs	overload::::BEGIN@114overload::BEGIN@114
1	1	1	11µs	117µs	overload::::BEGIN@144overload::BEGIN@144
0	0	0	0s	0s	overload::::Methodoverload::Method
0	0	0	0s	0s	overload::::Overloadedoverload::Overloaded
0	0	0	0s	0s	overload::::OverloadedStringifyoverload::OverloadedStringify
0	0	0	0s	0s	overload::::constantoverload::constant
0	0	0	0s	0s	overload::::mycanoverload::mycan
0	0	0	0s	0s	overload::::niloverload::nil
0	0	0	0s	0s	overload::::ov_methodoverload::ov_method
0	0	0	0s	0s	overload::::remove_constantoverload::remove_constant
0	0	0	0s	0s	overload::::unimportoverload::unimport

Call graph for these subroutines as a Graphviz dot language file.

Line	State ments	Time on line	Calls	Time in subs	Code
1					package overload;
2
3	1	800ns			our $VERSION = '1.22';
4
5	1	9µs			%ops = (
6					with_assign => "+ - * / % ** << >> x .",
7					assign => "+= -= = /= %= *= <<= >>= x= .=",
8					num_comparison => "< <= > >= == !=",
9					'3way_comparison' => "<=> cmp",
10					str_comparison => "lt le gt ge eq ne",
11					binary => '& &= \| \|= ^ ^=',
12					unary => "neg ! ~",
13					mutators => '++ --',
14					func => "atan2 cos sin exp abs log sqrt int",
15					conversion => 'bool "" 0+ qr',
16					iterators => '<>',
17					filetest => "-X",
18					dereferencing => '${} @{} %{} &{} *{}',
19					matching => '~~',
20					special => 'nomethod fallback =',
21					);
22
23	1	300ns			my %ops_seen;
24	1	4µs			for $category (keys %ops) {
25	15	69µs			$ops_seen{$_}++ for (split /\s+/, $ops{$category});
26					}
27
28					sub nil {}
29
30					# spent 33µs within overload::OVERLOAD which was called: # once (33µs+0s) by overload::import at line 59 sub OVERLOAD {
31	1	300ns			$package = shift;
32	1	3µs			my %arg = @_;
33	1	300ns			my ($sub, $fb);
34	1	7µs			*{$package . "::(("} = \&nil; # Make it findable via fetchmethod.
35	1	9µs			for (keys %arg) {
36	3	3µs			if ($_ eq 'fallback') {
37	1	2µs			for my $sym (*{$package . "::()"}) {
38	1	800ns			*$sym = \&nil; # Make it findable via fetchmethod.
39	1	2µs			$$sym = $arg{$_};
40					}
41					} else {
42	2	1µs			warnings::warnif("overload arg '$_' is invalid")
43					unless $ops_seen{$_};
44	2	1µs			$sub = $arg{$_};
45	2	1µs			if (not ref $sub) {
46	1	2µs			$ {$package . "::(" . $_} = $sub;
47	1	900ns			$sub = \&nil;
48					}
49					#print STDERR "Setting '$ {'package'}::\cO$_' to \\&'$sub'.\n";
50	2	4µs			*{$package . "::(" . $_} = \&{ $sub };
51					}
52					}
53					}
54
55					# spent 61µs (28+33) within overload::import which was called: # once (28µs+33µs) by Data::GUID::BEGIN@282 at line 284 of Data/GUID.pm sub import {
56	1	2µs			$package = (caller())[0];
57					# *{$package . "::OVERLOAD"} = \&OVERLOAD;
58	1	500ns			shift;
59	1	6µs	1	33µs	$package->overload::OVERLOAD(@_); # spent 33µs making 1 call to overload::OVERLOAD
60					}
61
62					sub unimport {
63					$package = (caller())[0];
64					shift;
65					*{$package . "::(("} = \&nil;
66					for (@_) {
67					warnings::warnif("overload arg '$_' is invalid")
68					unless $ops_seen{$_};
69					delete $ {$package . "::"}{$_ eq 'fallback' ? '()' : "(" .$_};
70					}
71					}
72
73					sub Overloaded {
74					my $package = shift;
75					$package = ref $package if ref $package;
76					mycan ($package, '()') \|\| mycan ($package, '((');
77					}
78
79					sub ov_method {
80					my $globref = shift;
81					return undef unless $globref;
82					my $sub = \&{*$globref};
83	2	384µs	2	519µs	# spent 508µs (474+35) within overload::BEGIN@83 which was called: # once (474µs+35µs) by Method::Generate::Accessor::BEGIN@9 at line 83 no overloading; # spent 508µs making 1 call to overload::BEGIN@83 # spent 11µs making 1 call to overloading::unimport
84					return $sub if !ref $sub or $sub != \&nil;
85					return shift->can($ {*$globref});
86					}
87
88					sub OverloadedStringify {
89					my $package = shift;
90					$package = ref $package if ref $package;
91					#$package->can('(""')
92					ov_method mycan($package, '(""'), $package
93					or ov_method mycan($package, '(0+'), $package
94					or ov_method mycan($package, '(bool'), $package
95					or ov_method mycan($package, '(nomethod'), $package;
96					}
97
98					sub Method {
99					my $package = shift;
100					if(ref $package) {
101					local $@;
102					local $!;
103					require Scalar::Util;
104					$package = Scalar::Util::blessed($package);
105					return undef if !defined $package;
106					}
107					#my $meth = $package->can('(' . shift);
108					ov_method mycan($package, '(' . shift), $package;
109					#return $meth if $meth ne \&nil;
110					#return $ {*{$meth}};
111					}
112
113					# spent 20µs within overload::AddrRef which was called 12 times, avg 2µs/call: # 12 times (20µs+0s) by Method::Generate::Accessor::_validate_codulatable at line 626 of Method/Generate/Accessor.pm, avg 2µs/call sub AddrRef {
114	2	193µs	2	35µs	# spent 26µs (17+9) within overload::BEGIN@114 which was called: # once (17µs+9µs) by Method::Generate::Accessor::BEGIN@9 at line 114 no overloading; # spent 26µs making 1 call to overload::BEGIN@114 # spent 9µs making 1 call to overloading::unimport
115	12	39µs			"$_[0]";
116					}
117
118	1	2µs			StrVal = AddrRef;
119
120					sub mycan { # Real can would leave stubs.
121					my ($package, $meth) = @_;
122
123					local $@;
124					local $!;
125					require mro;
126
127					my $mro = mro::get_linear_isa($package);
128					foreach my $p (@$mro) {
129					my $fqmeth = $p . q{::} . $meth;
130					return \*{$fqmeth} if defined &{$fqmeth};
131					}
132
133					return undef;
134					}
135
136	1	2µs			%constants = (
137					'integer' => 0x1000, # HINT_NEW_INTEGER
138					'float' => 0x2000, # HINT_NEW_FLOAT
139					'binary' => 0x4000, # HINT_NEW_BINARY
140					'q' => 0x8000, # HINT_NEW_STRING
141					'qr' => 0x10000, # HINT_NEW_RE
142					);
143
144	2	288µs	2	224µs	# spent 117µs (11+106) within overload::BEGIN@144 which was called: # once (11µs+106µs) by Method::Generate::Accessor::BEGIN@9 at line 144 use warnings::register; # spent 117µs making 1 call to overload::BEGIN@144 # spent 106µs making 1 call to warnings::register::import
145					sub constant {
146					# Arguments: what, sub
147					while (@_) {
148					if (@_ == 1) {
149					warnings::warnif ("Odd number of arguments for overload::constant");
150					last;
151					}
152					elsif (!exists $constants {$_ [0]}) {
153					warnings::warnif ("'$_[0]' is not an overloadable type");
154					}
155					elsif (!ref $_ [1] \|\| "$_[1]" !~ /(^\|=)CODE$0x[0-9a-f]+$$/) {
156					# Can't use C<ref $_[1] eq "CODE"> above as code references can be
157					# blessed, and C<ref> would return the package the ref is blessed into.
158					if (warnings::enabled) {
159					$_ [1] = "undef" unless defined $_ [1];
160					warnings::warn ("'$_[1]' is not a code reference");
161					}
162					}
163					else {
164					$^H{$_[0]} = $_[1];
165					$^H \|= $constants{$_[0]};
166					}
167					shift, shift;
168					}
169					}
170
171					sub remove_constant {
172					# Arguments: what, sub
173					while (@_) {
174					delete $^H{$_[0]};
175					$^H &= ~ $constants{$_[0]};
176					shift, shift;
177					}
178					}
179
180	1	11µs			1;
181
182					__END__