1FFI::Platypus::Closure(U3s)er Contributed Perl DocumentatFiFoIn::Platypus::Closure(3)
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NAME

6       FFI::Platypus::Closure - Platypus closure object
7

VERSION

9       version 1.43
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SYNOPSIS

12       create closure with OO interface
13
14        use FFI::Platypus::Closure;
15        my $closure = FFI::Platypus::Closure->new(sub { print "hello world\n" });
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17       create closure from Platypus object
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19        use FFI::Platypus 1.00;
20        my $ffi = FFI::Platypus->new( api => 1 );
21        my $closure = $ffi->closure(sub { print "hello world\n" });
22
23       use closure
24
25        $ffi->function(foo => ['()->void'] => 'void')->call($closure);
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DESCRIPTION

28       This class represents a Perl code reference that can be called from
29       compiled code.  When you create a closure object, you can pass it into
30       any function that expects a function pointer.  Care needs to be taken
31       with closures because compiled languages typically have a different way
32       of handling lifetimes of objects.  You have to make sure that if the
33       compiled code is going to call a closure that the closure object is
34       still in scope somewhere, or has been made sticky, otherwise you may
35       get a segment violation or other mysterious crash.
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CONSTRUCTOR

38   new
39        my $closure = FFI::Platypus::Closure->new($coderef);
40
41       Create a new closure object; $coderef must be a subroutine code
42       reference.
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METHODS

45   call
46        $closure->call(@arguments);
47        $closure->(@arguments);
48
49       Call the closure from Perl space.  May also be invoked by treating the
50       closure object as a code reference.
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52   sticky
53        $closure->sticky;
54
55       Mark the closure sticky, meaning that it won't be free'd even if all
56       the reference of the object fall out of scope.
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58   unstick
59        $closure->unstick;
60
61       Unmark the closure as sticky.
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AUTHOR

64       Author: Graham Ollis <plicease@cpan.org>
65
66       Contributors:
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68       Bakkiaraj Murugesan (bakkiaraj)
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70       Dylan Cali (calid)
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72       pipcet
73
74       Zaki Mughal (zmughal)
75
76       Fitz Elliott (felliott)
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78       Vickenty Fesunov (vyf)
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80       Gregor Herrmann (gregoa)
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82       Shlomi Fish (shlomif)
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84       Damyan Ivanov
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86       Ilya Pavlov (Ilya33)
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88       Petr Pisar (ppisar)
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90       Mohammad S Anwar (MANWAR)
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92       Håkon Hægland (hakonhagland, HAKONH)
93
94       Meredith (merrilymeredith, MHOWARD)
95
96       Diab Jerius (DJERIUS)
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98       Eric Brine (IKEGAMI)
99
100       szTheory
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103       This software is copyright (c) 2015,2016,2017,2018,2019,2020 by Graham
104       Ollis.
105
106       This is free software; you can redistribute it and/or modify it under
107       the same terms as the Perl 5 programming language system itself.
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111perl v5.32.1                      2021-03-18         FFI::Platypus::Closure(3)
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