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root |
1.22 |
#! perl # MANDATORY |
| 2 |
root |
1.1 |
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| 3 |
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# this extension swaps out maps and resets them, in essence managing |
| 4 |
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# the reset/swap policy of the server. |
| 5 |
root |
1.18 |
# it also contains the map prefetching logic |
| 6 |
root |
1.1 |
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| 7 |
root |
1.24 |
#our $DEACTIVATE_TIMEOUT = 20; # number of seconds after which maps get deactivated to save cpu |
| 8 |
root |
1.34 |
our $SWAP_TIMEOUT = $cf::CFG{swap_timeout} || 300; # number of seconds after which inactive maps get swapped out |
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our $SCHEDULE_INTERVAL = $cf::CFG{schedule_interval} || .8; # time the map scheduler sleeps between runs |
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our $SAVE_TIMEOUT = $cf::CFG{save_timeout} || 30; # save maps every n seconds |
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our $SWAP_LOAD1 = $cf::CFG{swap_load1} || .1; # start aggressively swapping at this load |
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our $SWAP_LOAD2 = $cf::CFG{swap_load2} || .4; # swap as fast as possible at this load |
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root |
1.1 |
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| 14 |
root |
1.17 |
cf::async_ext { |
| 15 |
root |
1.12 |
$Coro::current->prio (Coro::PRIO_MIN); |
| 16 |
root |
1.14 |
# load the header of swapped-out maps. |
| 17 |
root |
1.12 |
# this is not a correctness issue, it simply saves diskspace |
| 18 |
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# because old files will get cleaned up on reset time |
| 19 |
root |
1.16 |
Coro::Timer::sleep 1; |
| 20 |
root |
1.12 |
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| 21 |
root |
1.33 |
my $files = Coro::AIO::aio_readdir $cf::TMPDIR; |
| 22 |
root |
1.12 |
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| 23 |
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for my $map (@$files) { |
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utf8::decode $map; |
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next if $map =~ /\.(?:pst|meta)$/; |
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cf::map::find $map; |
| 27 |
root |
1.32 |
cf::wait_for_tick; |
| 28 |
root |
1.12 |
} |
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| 30 |
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#TODO: should also preload random maps... |
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}; |
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| 33 |
root |
1.17 |
our $SCHEDULER = cf::async_ext { |
| 34 |
root |
1.1 |
while () { |
| 35 |
root |
1.34 |
Coro::Event::do_timer (after => $SCHEDULE_INTERVAL) |
| 36 |
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unless $cf::LOADAVG > $SWAP_LOAD2; |
| 37 |
root |
1.1 |
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| 38 |
root |
1.9 |
# this weird form of iteration over values is used because |
| 39 |
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# the hash changes underneath us frequently, and for |
| 40 |
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# keeps a direct reference to the value without (in 5.8 perls) |
| 41 |
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# keeping a reference, so this is prone to crashes or worse. |
| 42 |
root |
1.8 |
my @maps = keys %cf::MAP; |
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for (@maps) { |
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my $map = $cf::MAP{$_} |
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or next; |
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$map->valid or next; |
| 47 |
root |
1.9 |
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| 48 |
root |
1.1 |
eval { |
| 49 |
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# not yet, because maps might become visible to players nearby |
| 50 |
root |
1.3 |
# we need to remove the map from %cf::MAP and all tiled map links |
| 51 |
root |
1.1 |
# if ($last_access + $DEACTIVATE_TIMEOUT <= $cf::RUNTIME) { |
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# $map->deactivate; |
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# delete $map->{active}; |
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# } |
| 55 |
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if ($map->should_reset) { |
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$map->reset; |
| 57 |
root |
1.3 |
} elsif ($map->in_memory == cf::MAP_IN_MEMORY) { |
| 58 |
root |
1.34 |
my $max_idle = cf::clamp +(cf::lerp $cf::LOADAVG, $SWAP_LOAD1, $SWAP_LOAD2, $SWAP_TIMEOUT, 0), 0, $SWAP_TIMEOUT; |
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| 60 |
root |
1.26 |
if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) { |
| 61 |
root |
1.25 |
$map->swap_out; |
| 62 |
root |
1.34 |
cf::wait_for_tick unless $cf::LOADAVG > $SWAP_LOAD2; |
| 63 |
root |
1.3 |
} elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
| 64 |
root |
1.25 |
$map->save; |
| 65 |
root |
1.34 |
cf::wait_for_tick unless $cf::LOADAVG > $SWAP_LOAD2; |
| 66 |
root |
1.3 |
} |
| 67 |
root |
1.1 |
} |
| 68 |
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}; |
| 69 |
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warn $@ if $@; |
| 70 |
root |
1.34 |
cf::cede_to_tick; |
| 71 |
root |
1.8 |
}; |
| 72 |
root |
1.1 |
} |
| 73 |
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}; |
| 74 |
root |
1.5 |
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| 75 |
root |
1.1 |
$SCHEDULER->prio (-2); |
| 76 |
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