1 | #! perl |
1 | #! perl # MANDATORY |
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. |
|
|
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 = $cf::CFG{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 = $cf::CFG{schedule_interval} || 10; # time the map scheduler sleeps between runs |
9 | our $SAVE_TIMEOUT = 30; # save maps every n seconds |
10 | our $SAVE_TIMEOUT = $cf::CFG{save_timeout} || 20; # save maps every n seconds |
10 | our $SAVE_INTERVAL = 0.3; # save at max. one map every $SAVE_INTERVAL |
11 | our $MAX_ACTIVES = $cf::CFG{max_actives} || 200000; # swap aggressively when > this many objects are active |
11 | |
12 | |
|
|
13 | cf::async_ext { |
|
|
14 | $Coro::current->prio (Coro::PRIO_MIN); |
|
|
15 | # load the header of swapped-out maps. |
|
|
16 | # this is not a correctness issue, it simply saves diskspace |
|
|
17 | # because old files will get cleaned up on reset time |
|
|
18 | Coro::Timer::sleep 1; |
|
|
19 | |
|
|
20 | my $files = Coro::AIO::aio_readdir cf::localdir . "/" . cf::tmpdir; |
|
|
21 | |
|
|
22 | for my $map (@$files) { |
|
|
23 | utf8::decode $map; |
|
|
24 | next if $map =~ /\.(?:pst|meta)$/; |
|
|
25 | $map =~ s/∕/\//g; |
|
|
26 | $map =~ s/\.map$//; |
|
|
27 | cf::map::find $map; |
|
|
28 | $cf::WAIT_FOR_TICK_ONE->wait; |
|
|
29 | } |
|
|
30 | |
|
|
31 | #TODO: should also preload random maps... |
|
|
32 | }; |
|
|
33 | |
12 | our $SCHEDULER = cf::coro { |
34 | our $SCHEDULER = cf::async_ext { |
|
|
35 | my $schedule_interval = Coro::Event->timer (after => 1, interval => $SCHEDULE_INTERVAL); |
13 | while () { |
36 | while () { |
14 | Coro::Timer::sleep $SCHEDULE_INTERVAL; |
37 | $schedule_interval->next unless cf::object::actives_size > $MAX_ACTIVES; |
15 | |
38 | |
16 | for my $map (values %cf::MAP) { |
39 | # this weird form of iteration over values is used because |
|
|
40 | # the hash changes underneath us frequently, and for |
|
|
41 | # keeps a direct reference to the value without (in 5.8 perls) |
|
|
42 | # keeping a reference, so this is prone to crashes or worse. |
|
|
43 | my @maps = keys %cf::MAP; |
|
|
44 | for (@maps) { |
|
|
45 | my $map = $cf::MAP{$_} |
|
|
46 | or next; |
|
|
47 | $map->valid or next; |
|
|
48 | |
17 | eval { |
49 | eval { |
18 | # not yet, because maps might become visible to players nearby |
50 | # not yet, because maps might become visible to players nearby |
19 | # we need to remove the map from %cf::MAP and all tiled map links |
51 | # we need to remove the map from %cf::MAP and all tiled map links |
20 | # if ($last_access + $DEACTIVATE_TIMEOUT <= $cf::RUNTIME) { |
52 | # if ($last_access + $DEACTIVATE_TIMEOUT <= $cf::RUNTIME) { |
21 | # $map->deactivate; |
53 | # $map->deactivate; |
22 | # delete $map->{active}; |
54 | # delete $map->{active}; |
23 | # } |
55 | # } |
24 | if ($map->should_reset) { |
56 | if ($map->should_reset) { |
25 | $map->reset; |
57 | $map->reset; |
26 | } elsif ($map->in_memory == cf::MAP_IN_MEMORY) { |
58 | } elsif ($map->in_memory == cf::MAP_IN_MEMORY) { |
|
|
59 | my $max_idle = cf::object::actives_size > $MAX_ACTIVES ? 1 : $SWAP_TIMEOUT; |
27 | if ($map->last_access + $SWAP_TIMEOUT <= $cf::RUNTIME && !$map->players) { |
60 | if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) { |
28 | $map->swap_out; |
61 | $map->swap_out; |
29 | Coro::Timer::sleep $SAVE_INTERVAL; |
62 | $cf::WAIT_FOR_TICK_ONE->wait unless $max_idle == 1; |
30 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
63 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
31 | $map->save; |
64 | $map->save; |
32 | Coro::Timer::sleep $SAVE_INTERVAL; |
65 | $cf::WAIT_FOR_TICK_ONE->wait unless $max_idle == 1; |
33 | } |
66 | } |
34 | } |
67 | } |
35 | }; |
68 | }; |
36 | warn $@ if $@; |
69 | warn $@ if $@; |
37 | Coro::cede; |
70 | Coro::cede; |
38 | } |
71 | }; |
39 | } |
72 | } |
40 | }; |
73 | }; |
41 | |
74 | |
42 | $SCHEDULER->prio (-2); |
75 | $SCHEDULER->prio (-2); |
43 | |
76 | |