File | /usr/local/lib/perl5/5.10.1/SelectSaver.pm |
Statements Executed | 23 |
Statement Execution Time | 944µs |
Calls | P | F | Exclusive Time |
Inclusive Time |
Subroutine |
---|---|---|---|---|---|
2 | 1 | 1 | 37µs | 76µs | new | SelectSaver::
6 | 3 | 2 | 36µs | 36µs | CORE:select (opcode) | SelectSaver::
1 | 1 | 1 | 14µs | 47µs | BEGIN@38 | SelectSaver::
2 | 1 | 1 | 12µs | 13µs | DESTROY | SelectSaver::
1 | 1 | 1 | 8µs | 40µs | BEGIN@39 | SelectSaver::
Line | State ments |
Time on line |
Calls | Time in subs |
Code |
---|---|---|---|---|---|
1 | package SelectSaver; | ||||
2 | |||||
3 | 1 | 3µs | our $VERSION = '1.02'; | ||
4 | |||||
5 | =head1 NAME | ||||
6 | |||||
7 | SelectSaver - save and restore selected file handle | ||||
8 | |||||
9 | =head1 SYNOPSIS | ||||
10 | |||||
11 | use SelectSaver; | ||||
12 | |||||
13 | { | ||||
14 | my $saver = SelectSaver->new(FILEHANDLE); | ||||
15 | # FILEHANDLE is selected | ||||
16 | } | ||||
17 | # previous handle is selected | ||||
18 | |||||
19 | { | ||||
20 | my $saver = SelectSaver->new; | ||||
21 | # new handle may be selected, or not | ||||
22 | } | ||||
23 | # previous handle is selected | ||||
24 | |||||
25 | =head1 DESCRIPTION | ||||
26 | |||||
27 | A C<SelectSaver> object contains a reference to the file handle that | ||||
28 | was selected when it was created. If its C<new> method gets an extra | ||||
29 | parameter, then that parameter is selected; otherwise, the selected | ||||
30 | file handle remains unchanged. | ||||
31 | |||||
32 | When a C<SelectSaver> is destroyed, it re-selects the file handle | ||||
33 | that was selected when it was created. | ||||
34 | |||||
35 | =cut | ||||
36 | |||||
37 | 1 | 40µs | require 5.000; | ||
38 | 3 | 112µs | 2 | 80µs | # spent 47µs (14+33) within SelectSaver::BEGIN@38 which was called
# once (14µs+33µs) by IO::File::BEGIN@132 at line 38 # spent 47µs making 1 call to SelectSaver::BEGIN@38
# spent 33µs making 1 call to Exporter::import |
39 | 3 | 691µs | 2 | 72µs | # spent 40µs (8+32) within SelectSaver::BEGIN@39 which was called
# once (8µs+32µs) by IO::File::BEGIN@132 at line 39 # spent 40µs making 1 call to SelectSaver::BEGIN@39
# spent 32µs making 1 call to Exporter::import |
40 | |||||
41 | # spent 76µs (37+39) within SelectSaver::new which was called 2 times, avg 38µs/call:
# 2 times (37µs+39µs) by IO::Handle::autoflush at line 479 of IO/Handle.pm, avg 38µs/call | ||||
42 | 2 | 5µs | @_ >= 1 && @_ <= 2 or croak 'usage: SelectSaver->new( [FILEHANDLE] )'; | ||
43 | 2 | 15µs | 2 | 6µs | my $fh = select; # spent 6µs making 2 calls to SelectSaver::CORE:select, avg 3µs/call |
44 | 2 | 6µs | my $self = bless \$fh, $_[0]; | ||
45 | 2 | 39µs | 4 | 33µs | select qualify($_[1], caller) if @_ > 1; # spent 30µs making 2 calls to SelectSaver::CORE:select, avg 15µs/call
# spent 4µs making 2 calls to Symbol::qualify, avg 2µs/call |
46 | 2 | 7µs | $self; | ||
47 | } | ||||
48 | |||||
49 | # spent 13µs (12+700ns) within SelectSaver::DESTROY which was called 2 times, avg 6µs/call:
# 2 times (12µs+700ns) by IO::Handle::autoflush at line 44 of IO/Socket.pm, avg 6µs/call | ||||
50 | 2 | 1µs | my $self = $_[0]; | ||
51 | 2 | 13µs | 2 | 700ns | select $$self; # spent 700ns making 2 calls to SelectSaver::CORE:select, avg 350ns/call |
52 | } | ||||
53 | |||||
54 | 1 | 12µs | 1; | ||
# spent 36µs within SelectSaver::CORE:select which was called 6 times, avg 6µs/call:
# 2 times (30µs+0s) by SelectSaver::new at line 45 of SelectSaver.pm, avg 15µs/call
# 2 times (6µs+0s) by SelectSaver::new at line 43 of SelectSaver.pm, avg 3µs/call
# 2 times (700ns+0s) by SelectSaver::DESTROY at line 51 of SelectSaver.pm, avg 350ns/call |