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# |
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# This file is part of Deliantra, the Roguelike Realtime MMORPG. |
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# |
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# Copyright (©) 2017,2018 Marc Alexander Lehmann / the Deliantra team |
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# Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
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# |
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# Deliantra is free software: you can redistribute it and/or modify it under |
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# the terms of the Affero GNU General Public License as published by the |
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# Free Software Foundation, either version 3 of the License, or (at your |
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# option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the Affero GNU General Public License |
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# and the GNU General Public License along with this program. If not, see |
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# <http://www.gnu.org/licenses/>. |
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# |
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# The authors can be reached via e-mail to <support@deliantra.net> |
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# |
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|
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package cf::incloader; |
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|
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use common::sense; |
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|
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our %FILE; # pre-loaded files |
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our $S1; # disk-size |
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our $S2; # memory-size |
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|
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our $PID = $$; |
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|
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sub find_inc($) { |
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for my $dir (@cf::ORIG_INC) { |
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ref $dir and next; |
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|
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my $path = "$dir/$_[0]"; |
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|
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return $path |
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unless Coro::AIO::aio_stat $path; |
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} |
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|
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undef |
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} |
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|
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# async inc loader. yay. |
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sub inc_loader { |
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my $mod = $_[1]; |
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|
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my ($path, $data); |
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|
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if (my $file = delete $FILE{$mod}) { |
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# we already have it in memory.. |
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cf::debug "incloader: using preloaded file for $mod"; |
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$path = $file->[0]; |
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$data = Compress::LZF::decompress $file->[1]; |
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|
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} else { |
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# we need to load it from disk. |
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|
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return if $$ != $PID; # do not do this in child processes |
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|
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if (cf::in_main && !cf::tick_inhibit) { |
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Carp::cluck "ERROR: attempted synchronous perl module load ($mod)"; |
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return; # do it blockingly |
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} else { |
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cf::debug "incloader: loading perl module $mod"; |
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} |
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|
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# find real file |
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$path = find_inc $mod; |
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|
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defined $path |
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or Carp::croak "Can't locate $mod in \@INC"; |
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|
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0 <= Coro::AIO::aio_load $path, $data |
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or next; |
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|
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# hackish way to pre-cache .so/.bs files |
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if ($path =~ s/\.pm$//) { |
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my @c = split /\//, $path; |
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for (reverse 2 .. $#c) { |
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my $a = join "/", @c[0..$_-1]; |
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my $b = join "/", @c[$_..$#c]; |
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|
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Coro::AIO::aio_stat "$a/auto/$b/." |
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and next; |
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|
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-f _ |
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or next; |
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|
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$path = "$a/auto/$b/"; |
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|
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cf::debug "incloader: pre-caching $path"; |
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|
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my $files = Coro::AIO::aio_readdir $path; |
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|
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my $grp = IO::AIO::aio_group; |
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|
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for my $file (@$files) { |
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next if $file =~ /(^\.packlist|\.h$|\.xst$)/; |
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|
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add $grp IO::AIO::aio_open "$path/$file", IO::AIO::O_RDONLY, 0, sub { |
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my ($fh) = @_ |
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or return; |
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|
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add $grp IO::AIO::aio_stat $fh, sub { |
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my $size = -s _; |
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|
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add $grp IO::AIO::aio_readahead $fh, 0, $size; |
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|
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cf::debug "incloader: pre-caching $path/$file ($size)"; |
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}; |
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}; |
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} |
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|
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Coro::AIO::aio_wait $grp; |
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last; |
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} |
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} |
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} |
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|
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# avoid upgrade when prepending #line, perlio is bugged |
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utf8::downgrade $path, 1; |
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$data = "#line 1 $path\n$data"; |
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|
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open my $fh, "<", \$data or die; |
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|
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cf::get_slot 0.1, 10, "\@INC loader" if $PID == $$; |
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|
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$fh |
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} |
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|
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# load file/directory, so we can load it synchronously |
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sub preload_($$$) { |
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my ($path, $name, $regex) = @_; |
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|
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if (exists $INC{$name}) { |
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cf::debug "incloader: $name already loaded, not preloading."; |
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} else { |
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Coro::AIO::aio_stat $path |
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and return; |
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|
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if (-d _) { |
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&preload_ ("$path/$_", "$name/$_", $regex) |
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for @{ Coro::AIO::aio_readdir $path }; |
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} elsif ($name =~ $regex) { |
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0 <= Coro::AIO::aio_load $path, my $data |
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or die "$path: $!"; |
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|
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$S1 += length $data; |
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|
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$data =~ s/^(?:#[^\n]*\n)+//; |
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$data = Compress::LZF::compress $data; |
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$S2 += (length $path) + (length $data) + 96; |
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|
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$FILE{$name} = [$path, $data]; |
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} |
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} |
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} |
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|
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sub preload($;$) { |
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my ($name, $regex) = @_; |
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|
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my $path = find_inc $name; |
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|
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defined $path |
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or return; |
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|
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preload_ $path, $name, $regex; |
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} |
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|
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sub preload_stuff { |
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# load some stuff so perl doesn't load it later... :/ |
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|
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eval { &Storable::nstore_fd }; |
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|
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preload "utf8_heavy.pl"; |
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preload "unicore", qr/\.pl$/; |
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|
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cf::info "incloader: preloaded $S1 octets from disk, cache now $S2 octets."; |
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} |
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|
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sub init { |
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# save original @INC |
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@cf::ORIG_INC = ($cf::LIBDIR, @INC) unless @cf::ORIG_INC; |
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|
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# make sure we can do scalar-opens |
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open my $dummy, "<", \my $dummy2; |
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|
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preload_stuff; |
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|
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@INC = (\&inc_loader, @cf::ORIG_INC); # @ORIG_INC is needed for DynaLoader, AutoLoad etc. |
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cf::debug "incloader: module loading will be asynchronous from this point on."; |
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} |
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|
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