Convert::Binary::C::Cached(3pm)
NAME
Convert::Binary::C::Cached - Caching for Convert::Binary::C
SYNOPSIS
use Convert::Binary::C::Cached;
use Data::Dumper;
#------------------------
# Create a cached object
#------------------------
$c = Convert::Binary::C::Cached->new(
Cache => '/tmp/cache.c',
Include => [
'/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/include',
'/usr/include',
],
);
#----------------------------------------------------
# Parse 'time.h' and dump the definition of timespec
#----------------------------------------------------
$c->parse_file('time.h');
print Dumper($c->struct('timespec'));
DESCRIPTION
Convert::Binary::C::Cached simply adds caching capability to
Convert::Binary::C. You can use it in just the same way that you would
use Convert::Binary::C. The interface is exactly the same.
To use the caching capability, you must pass the "Cache" option to the
constructor. If you don't pass it, you will receive an ordinary
Convert::Binary::C object. The argument to the "Cache" option is the
file that is used for caching this object.
The caching algorithm automatically detects when the cache file cannot
be used and the original code has to be parsed. In that case, the
cache file is updated. An update of the cache file can be triggered by
one or more of the following factors:
o The cache file doesn't exist, which is obvious.
o The cache file is corrupt, i.e. cannot be parsed.
o The object's configuration has changed.
o The embedded code for a "parse" method call has changed.
- o At least one of the files that the object depends on does not exist
- or has a different size or a different modification or change
timestamp.
LIMITATIONS
You cannot call "parse" or "parse_file" more that once when using a
Convert::Binary::C::Cached object. This isn't a big problem, as you
usually don't call them multiple times.
If a dependency file changes, but the change affects neither the size
nor the timestamps of that file, the caching algorithm cannot detect
that an update is required.
COPYRIGHT
Copyright (c) 2002-2009 Marcus Holland-Moritz. All rights reserved.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
SEE ALSO
- See Convert::Binary::C.