Convert::Binary::C::Cached - Caching for Convert::Binary::C
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/x86_64-pc-linux-gnu/10.2.0/include',
'/usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/include-fixed',
'/usr/include',
],
);
#----------------------------------------------------
# Parse 'time.h' and dump the definition of timespec
#----------------------------------------------------
$c->parse_file('time.h');
print Dumper($c->struct('timespec'));
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:
- •
- The cache file doesn't exist, which is obvious.
- •
- The cache file is corrupt, i.e. cannot be parsed.
- •
- The object's configuration has changed.
- •
- The embedded code for a "parse" method call has
changed.
- •
- 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.
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 (c) 2002-2020 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 Convert::Binary::C.