| 1 |
# |
| 2 |
# This file is part of Deliantra, the Roguelike Realtime MMORPG. |
| 3 |
# |
| 4 |
# Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
| 5 |
# |
| 6 |
# Deliantra is free software: you can redistribute it and/or modify it under |
| 7 |
# the terms of the Affero GNU General Public License as published by the |
| 8 |
# Free Software Foundation, either version 3 of the License, or (at your |
| 9 |
# option) any later version. |
| 10 |
# |
| 11 |
# This program is distributed in the hope that it will be useful, |
| 12 |
# but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
# GNU General Public License for more details. |
| 15 |
# |
| 16 |
# You should have received a copy of the Affero GNU General Public License |
| 17 |
# and the GNU General Public License along with this program. If not, see |
| 18 |
# <http://www.gnu.org/licenses/>. |
| 19 |
# |
| 20 |
# The authors can be reached via e-mail to <support@deliantra.net> |
| 21 |
# |
| 22 |
|
| 23 |
package cf::incloader; |
| 24 |
|
| 25 |
use common::sense; |
| 26 |
|
| 27 |
our %FILE; # pre-loaded files |
| 28 |
our $S1; # disk-size |
| 29 |
our $S2; # memory-size |
| 30 |
|
| 31 |
our $PID = $$; |
| 32 |
|
| 33 |
sub find_inc($) { |
| 34 |
for my $dir (@cf::ORIG_INC) { |
| 35 |
ref $dir and next; |
| 36 |
|
| 37 |
my $path = "$dir/$_[0]"; |
| 38 |
|
| 39 |
return $path |
| 40 |
unless Coro::AIO::aio_stat $path; |
| 41 |
} |
| 42 |
|
| 43 |
undef |
| 44 |
} |
| 45 |
|
| 46 |
# async inc loader. yay. |
| 47 |
sub inc_loader { |
| 48 |
my $mod = $_[1]; |
| 49 |
|
| 50 |
my ($path, $data); |
| 51 |
|
| 52 |
if (my $file = delete $FILE{$mod}) { |
| 53 |
# we already have it in memory.. |
| 54 |
cf::debug "incloader: using preloaded file for $mod"; |
| 55 |
$path = $file->[0]; |
| 56 |
$data = Compress::LZF::decompress $file->[1]; |
| 57 |
|
| 58 |
} else { |
| 59 |
# we need to load it from disk. |
| 60 |
|
| 61 |
return if $$ != $PID; # do not do this in child processes |
| 62 |
|
| 63 |
if (cf::in_main && !cf::tick_inhibit) { |
| 64 |
Carp::cluck "ERROR: attempted synchronous perl module load ($mod)"; |
| 65 |
return; # do it blockingly |
| 66 |
} else { |
| 67 |
cf::debug "incloader: loading perl module $mod"; |
| 68 |
} |
| 69 |
|
| 70 |
# find real file |
| 71 |
$path = find_inc $mod; |
| 72 |
|
| 73 |
defined $path |
| 74 |
or Carp::croak "Can't locate $mod in \@INC"; |
| 75 |
|
| 76 |
0 <= Coro::AIO::aio_load $path, $data |
| 77 |
or next; |
| 78 |
|
| 79 |
# hackish way to pre-cache .so/.bs files |
| 80 |
if ($path =~ s/\.pm$//) { |
| 81 |
my @c = split /\//, $path; |
| 82 |
for (reverse 2 .. $#c) { |
| 83 |
my $a = join "/", @c[0..$_-1]; |
| 84 |
my $b = join "/", @c[$_..$#c]; |
| 85 |
|
| 86 |
Coro::AIO::aio_stat "$a/auto/$b/." |
| 87 |
and next; |
| 88 |
|
| 89 |
-f _ |
| 90 |
or next; |
| 91 |
|
| 92 |
$path = "$a/auto/$b/"; |
| 93 |
|
| 94 |
cf::debug "incloader: pre-caching $path"; |
| 95 |
|
| 96 |
my $files = Coro::AIO::aio_readdir $path; |
| 97 |
|
| 98 |
my $grp = IO::AIO::aio_group; |
| 99 |
|
| 100 |
for my $file (@$files) { |
| 101 |
next if $file =~ /(^\.packlist|\.h$|\.xst$)/; |
| 102 |
|
| 103 |
add $grp IO::AIO::aio_open "$path/$file", IO::AIO::O_RDONLY, 0, sub { |
| 104 |
my ($fh) = @_ |
| 105 |
or return; |
| 106 |
|
| 107 |
add $grp IO::AIO::aio_stat $fh, sub { |
| 108 |
my $size = -s _; |
| 109 |
|
| 110 |
add $grp IO::AIO::aio_readahead $fh, 0, $size; |
| 111 |
|
| 112 |
cf::debug "incloader: pre-caching $path/$file ($size)"; |
| 113 |
}; |
| 114 |
}; |
| 115 |
} |
| 116 |
|
| 117 |
Coro::AIO::aio_wait $grp; |
| 118 |
last; |
| 119 |
} |
| 120 |
} |
| 121 |
} |
| 122 |
|
| 123 |
# avoid upgrade when prepending #line, perlio is bugged |
| 124 |
utf8::downgrade $path, 1; |
| 125 |
$data = "#line 1 $path\n$data"; |
| 126 |
|
| 127 |
open my $fh, "<", \$data or die; |
| 128 |
|
| 129 |
cf::get_slot 0.1, 10, "\@INC loader"; |
| 130 |
|
| 131 |
$fh |
| 132 |
} |
| 133 |
|
| 134 |
# load file/directory, so we can load it synchronously |
| 135 |
sub preload_($$$) { |
| 136 |
my ($path, $name, $regex) = @_; |
| 137 |
|
| 138 |
if (exists $INC{$name}) { |
| 139 |
cf::debug "incloader: $name already loaded, not preloading."; |
| 140 |
} else { |
| 141 |
Coro::AIO::aio_stat $path |
| 142 |
and return; |
| 143 |
|
| 144 |
if (-d _) { |
| 145 |
&preload_ ("$path/$_", "$name/$_", $regex) |
| 146 |
for @{ Coro::AIO::aio_readdir $path }; |
| 147 |
} elsif ($name =~ $regex) { |
| 148 |
0 <= Coro::AIO::aio_load $path, my $data |
| 149 |
or die "$path: $!"; |
| 150 |
|
| 151 |
$S1 += length $data; |
| 152 |
|
| 153 |
$data =~ s/^(?:#[^\n]*\n)+//; |
| 154 |
$data = Compress::LZF::compress $data; |
| 155 |
$S2 += (length $path) + (length $data) + 96; |
| 156 |
|
| 157 |
$FILE{$name} = [$path, $data]; |
| 158 |
} |
| 159 |
} |
| 160 |
} |
| 161 |
|
| 162 |
sub preload($;$) { |
| 163 |
my ($name, $regex) = @_; |
| 164 |
|
| 165 |
my $path = find_inc $name; |
| 166 |
|
| 167 |
defined $path |
| 168 |
or return; |
| 169 |
|
| 170 |
preload_ $path, $name, $regex; |
| 171 |
} |
| 172 |
|
| 173 |
sub preload_stuff { |
| 174 |
# load some stuff so perl doesn't load it later... :/ |
| 175 |
|
| 176 |
eval { &Storable::nstore_fd }; |
| 177 |
|
| 178 |
preload "utf8_heavy.pl"; |
| 179 |
preload "unicore", qr/\.pl$/; |
| 180 |
|
| 181 |
cf::info "incloader: preloaded $S1 octets from disk, cache now $S2 octets."; |
| 182 |
} |
| 183 |
|
| 184 |
sub init { |
| 185 |
# save original @INC |
| 186 |
@cf::ORIG_INC = ($cf::LIBDIR, @INC) unless @cf::ORIG_INC; |
| 187 |
|
| 188 |
# make sure we can do scalar-opens |
| 189 |
open my $dummy, "<", \my $dummy2; |
| 190 |
|
| 191 |
preload_stuff; |
| 192 |
|
| 193 |
@INC = (\&inc_loader, @cf::ORIG_INC); # @ORIG_INC is needed for DynaLoader, AutoLoad etc. |
| 194 |
|
| 195 |
cf::debug "incloader: module loading will be asynchronous from this point on."; |
| 196 |
} |
| 197 |
|
| 198 |
1 |
