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 = 60; # 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 = 600; # number of seconds after which maps inactive get swapped out |
8 | our $SWAP_TIMEOUT = $cf::CFG{swap_timeout} || 300; # number of seconds after which inactive maps get swapped out |
8 | our $SCHEDULE_INTERVAL = 8; # time the map scheduler sleeps between runs |
9 | our $SCHEDULE_INTERVAL = $cf::CFG{schedule_interval} || .8; # time the map scheduler sleeps between runs |
9 | our $SAVE_TIMEOUT = 60; # save maps every n seconds |
10 | our $SAVE_TIMEOUT = $cf::CFG{save_timeout} || 30; # save maps every n seconds |
10 | our $SAVE_INTERVAL = 0.4; # save at max. one map every $SAVE_HOLD |
11 | our $SWAP_LOAD1 = $cf::CFG{swap_load1} || .1; # start aggressively swapping at this load |
|
|
12 | our $SWAP_LOAD2 = $cf::CFG{swap_load2} || .4; # swap as fast as possible at this load |
11 | |
13 | |
12 | $DEACTIVATE_TIMEOUT = 3;#d# |
14 | cf::async_ext { |
13 | $SWAP_TIMEOUT = 5;#d# |
15 | $Coro::current->prio (Coro::PRIO_MIN); |
14 | $SCHEDULE_INTERVAL = 1; |
16 | # load the header of swapped-out maps. |
|
|
17 | # this is not a correctness issue, it simply saves diskspace |
|
|
18 | # because old files will get cleaned up on reset time |
|
|
19 | Coro::Timer::sleep 1; |
15 | |
20 | |
|
|
21 | my $files = Coro::AIO::aio_readdir $cf::TMPDIR; |
|
|
22 | |
|
|
23 | for my $map (@$files) { |
|
|
24 | utf8::decode $map; |
|
|
25 | next if $map =~ /\.(?:pst|meta)$/; |
|
|
26 | cf::map::find $map; |
|
|
27 | cf::wait_for_tick; |
|
|
28 | } |
|
|
29 | |
|
|
30 | #TODO: should also preload random maps... |
|
|
31 | }; |
|
|
32 | |
16 | our $SCHEDULER = cf::coro { |
33 | our $SCHEDULER = cf::async_ext { |
17 | while () { |
34 | while () { |
18 | Coro::Timer::sleep $SCHEDULE_INTERVAL; |
35 | Coro::Event::do_timer (after => $SCHEDULE_INTERVAL) |
|
|
36 | unless $cf::LOADAVG > $SWAP_LOAD2; |
19 | |
37 | |
20 | for my $map (values %cf::MAP) { |
38 | # this weird form of iteration over values is used because |
|
|
39 | # the hash changes underneath us frequently, and for |
|
|
40 | # keeps a direct reference to the value without (in 5.8 perls) |
|
|
41 | # keeping a reference, so this is prone to crashes or worse. |
|
|
42 | my @maps = keys %cf::MAP; |
|
|
43 | for (@maps) { |
|
|
44 | my $map = $cf::MAP{$_} |
|
|
45 | or next; |
|
|
46 | $map->valid or next; |
|
|
47 | |
21 | eval { |
48 | eval { |
22 | next if $map->players; |
|
|
23 | my $last_access = $map->last_access; |
|
|
24 | # not yet, because maps might become visible to players nearby |
49 | # not yet, because maps might become visible to players nearby |
25 | # we need a tiled meta map for this to work |
50 | # we need to remove the map from %cf::MAP and all tiled map links |
26 | # if ($last_access + $DEACTIVATE_TIMEOUT <= $cf::RUNTIME) { |
51 | # if ($last_access + $DEACTIVATE_TIMEOUT <= $cf::RUNTIME) { |
27 | # $map->deactivate; |
52 | # $map->deactivate; |
28 | # delete $map->{active}; |
53 | # delete $map->{active}; |
29 | # } |
54 | # } |
30 | if ($map->should_reset) { |
55 | if ($map->should_reset) { |
31 | $map->reset; |
56 | $map->reset; |
32 | } elsif ($last_access + $SWAP_TIMEOUT <= $cf::RUNTIME) { |
57 | } elsif ($map->in_memory == cf::MAP_IN_MEMORY) { |
|
|
58 | my $max_idle = cf::clamp +(cf::lerp $cf::LOADAVG, $SWAP_LOAD1, $SWAP_LOAD2, $SWAP_TIMEOUT, 0), 0, $SWAP_TIMEOUT; |
|
|
59 | |
|
|
60 | if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) { |
33 | $map->swap_out; |
61 | $map->swap_out; |
34 | Coro::Timer::sleep $SAVE_INTERVAL; |
62 | cf::wait_for_tick unless $cf::LOADAVG > $SWAP_LOAD2; |
35 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
63 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
36 | $map->save; |
64 | $map->save; |
37 | Coro::Timer::sleep $SAVE_INTERVAL; |
65 | cf::wait_for_tick unless $cf::LOADAVG > $SWAP_LOAD2; |
|
|
66 | } |
38 | } |
67 | } |
39 | }; |
68 | }; |
40 | warn $@ if $@; |
69 | warn $@ if $@; |
41 | Coro::cede; |
70 | cf::cede_to_tick; |
42 | } |
71 | }; |
43 | } |
72 | } |
44 | }; |
73 | }; |
|
|
74 | |
45 | $SCHEDULER->prio (-2); |
75 | $SCHEDULER->prio (-2); |
46 | |
76 | |