NAME

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

VERSION

version 1.56

SYNOPSIS

In your C code:

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

In your Platypus::FFI code:

 use FFI::Platypus;
 
 my $ffi = FFI::Platypus->new( api => 1 );
 $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.

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)

COPYRIGHT AND LICENSE