Provided by: libffi-platypus-perl_0.83-1_amd64
FFI::Platypus::Memory - Memory functions for FFI
use FFI::Platypus::Memory; # allocate 64 bytes of memory using the # libc malloc function. my $pointer = malloc 64; # use that memory wisely ... # free the memory when you are done. free $pointer;
This module provides an interface to common memory functions provided by the standard C library. They may be useful when constructing interfaces to C libraries with FFI.
calloc my $pointer = calloc $count, $size; The "calloc" function contiguously allocates enough space for $count objects that are $size bytes of memory each. free free $pointer; The "free" function frees the memory allocated by "malloc", "calloc", "realloc" or "strdup". It is important to only free memory that you yourself have allocated. A good way to crash your program is to try and free a pointer that some C library has returned to you. malloc my $pointer = malloc $size; The "malloc" function allocates $size bytes of memory. memcpy memcpy $dst_pointer, $src_pointer, $size; The "memcpy" function copies $size bytes from $src_pointer to $dst_pointer. It also returns $dst_pointer. memset memset $buffer, $value, $length; The "memset" function writes $length bytes of $value to the address specified by $buffer. realloc my $new_pointer = realloc $old_pointer, $size; The "realloc" function reallocates enough memory to fit $size bytes. It copies the existing data and frees $old_pointer. If you pass "undef" in as $old_pointer, then it behaves exactly like "malloc": my $pointer = realloc undef, 64; # same as malloc 64 strdup my $pointer = strdup $string; The "strdup" function allocates enough memory to contain $string and then copies it to that newly allocated memory. This version of "strdup" returns an opaque pointer type, not a string type. This may seem a little strange, but returning a string type would not be very useful in Perl. strndup my $pointer = strndup $string, $max; The same as "strdup" above, except at most $max characters will be copied in the new string.
FFI::Platypus Main Platypus documentation.
Author: Graham Ollis <firstname.lastname@example.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)
COPYRIGHT AND LICENSE
This software is copyright (c) 2015,2016,2017,2018,2019 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.