| 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 = 70; # 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 = 5; # time the map scheduler sleeps between runs |
9 | our $SCHEDULE_INTERVAL = $cf::CFG{schedule_interval} || 2; # time the map scheduler sleeps between runs |
| 9 | our $SAVE_TIMEOUT = 40; # 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_INTERVAL |
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 | |
|
|
14 | cf::async_ext { |
|
|
15 | $Coro::current->{desc} = "startup map scanner"; |
|
|
16 | $Coro::current->prio (Coro::PRIO_MIN); |
|
|
17 | |
|
|
18 | # load the header of swapped-out maps. |
|
|
19 | # this is not a correctness issue, it simply saves diskspace |
|
|
20 | # because old files will get cleaned up on reset time |
|
|
21 | Coro::Timer::sleep 0.25; |
|
|
22 | |
|
|
23 | for my $path (@{ cf::map::tmp_maps or [] }, @{ cf::map::random_maps or [] }) { |
|
|
24 | cf::cede_to_tick; |
|
|
25 | cf::map::find $path; |
|
|
26 | } |
|
|
27 | |
|
|
28 | # now hunt for resettable per-player maps |
|
|
29 | for my $login (@{ cf::player::list_logins or [] }) { |
|
|
30 | for my $path (@{ cf::player::maps $login or [] }) { |
|
|
31 | cf::cede_to_tick; |
|
|
32 | |
|
|
33 | $path =~ /^~[^\/]+(\/.*)$/ |
|
|
34 | or next; # doh |
|
|
35 | |
|
|
36 | my $base = cf::map::find $1; |
|
|
37 | |
|
|
38 | # skip maps without base maps on the assumption |
|
|
39 | # that those are old, unresettable maps |
|
|
40 | next unless $base; |
|
|
41 | |
|
|
42 | # skip unresettable maps, for speed |
|
|
43 | next if $base->{deny_reset}; |
|
|
44 | |
|
|
45 | my $map = cf::map::find $path; |
|
|
46 | |
|
|
47 | if ($map->{deny_reset}) { |
|
|
48 | warn "found noreset map with resettable base map, resetting: $path\n"; |
|
|
49 | delete $map->{deny_reset}; |
|
|
50 | } |
|
|
51 | } |
|
|
52 | } |
|
|
53 | }; |
|
|
54 | |
| 12 | our $SCHEDULER = cf::coro { |
55 | our $SCHEDULER = cf::async_ext { |
|
|
56 | $Coro::current->{desc} = "map scheduler"; |
|
|
57 | $Coro::current->prio (Coro::PRIO_MAX); |
|
|
58 | |
| 13 | while () { |
59 | while () { |
|
|
60 | if ($cf::LOADAVG > $SWAP_LOAD2) { |
|
|
61 | Coro::EV::timer_once 0.05; |
|
|
62 | cf::wait_for_tick; |
|
|
63 | } else { |
| 14 | Coro::Timer::sleep $SCHEDULE_INTERVAL; |
64 | Coro::EV::timer_once $SCHEDULE_INTERVAL; |
|
|
65 | } |
| 15 | |
66 | |
| 16 | for my $map (values %cf::MAP) { |
67 | # this weird form of iteration over values is used because |
|
|
68 | # the hash changes underneath us frequently, and for |
|
|
69 | # keeps a direct reference to the value without (in 5.8 perls) |
|
|
70 | # keeping a reference, so this is prone to crashes or worse. |
|
|
71 | my @maps = keys %cf::MAP; |
|
|
72 | for (@maps) { |
|
|
73 | my $map = $cf::MAP{$_} |
|
|
74 | or next; |
|
|
75 | $map->valid or next; |
|
|
76 | |
| 17 | eval { |
77 | eval { |
| 18 | next if $map->players; |
|
|
| 19 | # not yet, because maps might become visible to players nearby |
78 | # not yet, because maps might become visible to players nearby |
| 20 | # we need to remove the map from %cf::MAP and all tiled map links |
79 | # we need to remove the map from %cf::MAP and all tiled map links |
| 21 | # if ($last_access + $DEACTIVATE_TIMEOUT <= $cf::RUNTIME) { |
80 | # if ($last_access + $DEACTIVATE_TIMEOUT <= $cf::RUNTIME) { |
| 22 | # $map->deactivate; |
81 | # $map->deactivate; |
| 23 | # delete $map->{active}; |
82 | # delete $map->{active}; |
| 24 | # } |
83 | # } |
| 25 | if ($map->should_reset) { |
84 | if ($map->should_reset) { |
| 26 | $map->reset; |
85 | $map->reset; |
| 27 | } elsif ($map->in_memory == cf::MAP_IN_MEMORY) { |
86 | } elsif ($map->in_memory == cf::MAP_IN_MEMORY) { |
|
|
87 | my $max_idle = cf::clamp +(cf::lerp $cf::LOADAVG, $SWAP_LOAD1, $SWAP_LOAD2, $SWAP_TIMEOUT, $cf::TICK * 1.5), |
|
|
88 | $cf::TICK * 1.5, $SWAP_TIMEOUT; |
|
|
89 | |
| 28 | if ($map->last_access + $SWAP_TIMEOUT <= $cf::RUNTIME) { |
90 | if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) { |
| 29 | $map->swap_out; |
91 | $map->swap_out; |
| 30 | Coro::Timer::sleep $SAVE_INTERVAL; |
|
|
| 31 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
92 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
| 32 | $map->save; |
93 | $map->save; |
| 33 | Coro::Timer::sleep $SAVE_INTERVAL; |
94 | $map->{last_save} -= rand; # randomise map save times a bit |
| 34 | } |
95 | } |
| 35 | } |
96 | } |
| 36 | }; |
97 | }; |
| 37 | warn $@ if $@; |
98 | warn $@ if $@; |
| 38 | Coro::cede; |
99 | cf::cede_to_tick; |
| 39 | } |
100 | }; |
| 40 | } |
101 | } |
| 41 | }; |
102 | }; |
| 42 | |
103 | |
| 43 | $SCHEDULER->prio (-2); |
104 | $SCHEDULER->prio (-2); |
| 44 | |
105 | |
