| 1 | #! perl |
1 | #! perl |
| 2 | |
2 | |
| 3 | # this extension swaps out maps and resets them, in essence managing |
3 | # this extension swaps out maps and resets them, in essence managing |
| 4 | # the reset/swap policy of the server. |
4 | # the reset/swap policy of the server. |
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5 | # it also contains the map prefetching logic |
| 5 | |
6 | |
| 6 | our $DEACTIVATE_TIMEOUT = 20; # number of seconds after which maps get deactivated to save cpu |
7 | our $DEACTIVATE_TIMEOUT = 20; # number of seconds after which maps get deactivated to save cpu |
| 7 | our $SWAP_TIMEOUT = 50; # number of seconds after which maps inactive get swapped out |
8 | our $SWAP_TIMEOUT = 35; # number of seconds after which maps inactive get swapped out |
| 8 | our $SCHEDULE_INTERVAL = 2; # time the map scheduler sleeps between runs |
9 | our $SCHEDULE_INTERVAL = 2; # time the map scheduler sleeps between runs |
| 9 | our $SAVE_TIMEOUT = 30; # save maps every n seconds |
10 | our $SAVE_TIMEOUT = 20; # save maps every n seconds |
| 10 | our $SAVE_INTERVAL = 0.3; # save at max. one map every $SAVE_INTERVAL |
11 | our $SAVE_INTERVAL = 0.1; # save at max. one map every $SAVE_INTERVAL |
| 11 | |
12 | |
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13 | cf::async_ext { |
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14 | $Coro::current->prio (Coro::PRIO_MIN); |
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15 | # load the header of swapped-out maps. |
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16 | # this is not a correctness issue, it simply saves diskspace |
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17 | # because old files will get cleaned up on reset time |
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18 | Coro::Timer::sleep 1; |
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19 | |
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20 | my $files = Coro::AIO::aio_readdir cf::localdir . "/" . cf::tmpdir; |
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21 | |
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22 | for my $map (@$files) { |
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23 | utf8::decode $map; |
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24 | next if $map =~ /\.(?:pst|meta)$/; |
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25 | $map =~ s/∕/\//g; |
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26 | cf::map::find $map; |
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27 | Coro::Timer::sleep 0.05; |
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28 | } |
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29 | |
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30 | #TODO: should also preload random maps... |
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31 | }; |
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32 | |
| 12 | our $SCHEDULER = cf::coro { |
33 | our $SCHEDULER = cf::async_ext { |
| 13 | while () { |
34 | while () { |
| 14 | Coro::Timer::sleep $SCHEDULE_INTERVAL; |
35 | Coro::Timer::sleep $SCHEDULE_INTERVAL; |
| 15 | |
36 | |
| 16 | # this weird form of iteration over values is used because |
37 | # this weird form of iteration over values is used because |
| 17 | # the hash changes underneath us frequently, and for |
38 | # the hash changes underneath us frequently, and for |
| … | |
… | |
| 48 | } |
69 | } |
| 49 | }; |
70 | }; |
| 50 | |
71 | |
| 51 | $SCHEDULER->prio (-2); |
72 | $SCHEDULER->prio (-2); |
| 52 | |
73 | |
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74 | # map load prefetch for tiled maps, possibly exits, too |
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75 | cf::map->attach ( |
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76 | on_enter => sub { |
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77 | my ($map, $pl) = @_; |
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78 | |
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79 | (cf::async { |
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80 | my @diag; # diagonal neighbours |
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81 | |
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82 | for (0 .. 3) { |
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83 | my $neigh = $map->tile_path ($_) |
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84 | or next; |
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85 | $neigh = cf::map::find $neigh, $map |
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86 | or next; |
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87 | $neigh->load; |
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88 | |
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89 | push @diag, [$neigh->tile_path (($_ + 3) % 4), $neigh], |
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90 | [$neigh->tile_path (($_ + 1) % 4), $neigh]; |
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91 | } |
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92 | |
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93 | for (@diag) { |
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94 | my $neigh = cf::map::find @$_ |
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95 | or next; |
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96 | $neigh->load; |
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97 | } |
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98 | })->prio (2); |
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99 | # higher prio because prefetching is very important |
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100 | # as it prefetches maps that can make the server block |
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101 | }, |
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102 | ); |
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103 | |
