FFI::Platypus::Type::PointerSizeBuffer(3)

NAME
FFI::Platypus::Type::PointerSizeBuffer - Convert string scalar to a buffer as a pointer / size_t combination

VERSION
version 2.10

SYNOPSIS
In your C code:

 void
 function_with_buffer(void *pointer, size_t size)
 {
   ...
 }

In your Platypus::FFI code:

 use FFI::Platypus 2.00;

 my $ffi = FFI::Platypus->new( api => 2 );
 $ffi->load_custom_type('::PointerSizeBuffer' => 'buffer');

 $ffi->attach(function_with_buffer => ['buffer'] => 'void');
 my $string = "content of buffer";
 function_with_buffer($string);

DESCRIPTION
A common pattern in C code is to pass in a region of memory as a buffer, consisting of a pointer and a size of the memory region. In Perl, string scalars also point to a contiguous series of bytes that has a size, so when interfacing with C libraries it is handy to be able to pass in a string scalar as a pointer / size buffer pair.

SEE ALSO

FFI::Platypus
    Main Platypus documentation.

FFI::Platypus::Type
    Platypus types documentation.

AUTHOR
Author: Graham Ollis <plicease@cpan.org>

Contributors:

Bakkiaraj Murugesan (bakkiaraj)

Dylan Cali (calid)

pipcet

Zaki Mughal (zmughal)

Fitz Elliott (felliott)

Vickenty Fesunov (vyf)

Gregor Herrmann (gregoa)

Shlomi Fish (shlomif)

Damyan Ivanov

Ilya Pavlov (Ilya33)

Petr Písař (ppisar)

Mohammad S Anwar (MANWAR)

Håkon Hægland (hakonhagland, HAKONH)

Meredith (merrilymeredith, MHOWARD)

Diab Jerius (DJERIUS)

Eric Brine (IKEGAMI)

szTheory

José Joaquín Atria (JJATRIA)

Pete Houston (openstrike, HOUSTON)

Lukas Mai (MAUKE)

COPYRIGHT AND LICENSE
This software is copyright (c) 2015-2022 by Graham Ollis.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.