| 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} || 300; # number of seconds after which inactive maps get swapped out |
| 8 | our $SCHEDULE_INTERVAL = 2; # 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 = 30; # save maps every n seconds |
10 | our $SAVE_TIMEOUT = $cf::CFG{save_timeout} || 30; # save maps every n seconds |
| 10 | our $SAVE_INTERVAL = 0.3; # 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->prio (Coro::PRIO_MIN); |
|
|
16 | |
|
|
17 | # load the header of swapped-out maps. |
|
|
18 | # this is not a correctness issue, it simply saves diskspace |
|
|
19 | # because old files will get cleaned up on reset time |
|
|
20 | Coro::Timer::sleep 0.25; |
|
|
21 | |
|
|
22 | for my $path (@{ cf::map::tmp_maps or [] }, @{ cf::map::random_maps or [] }) { |
|
|
23 | cf::cede_to_tick; |
|
|
24 | cf::map::find $path; |
|
|
25 | } |
|
|
26 | |
|
|
27 | # now hunt for resettable per-player maps |
|
|
28 | for my $login (@{ cf::player::list_logins or [] }) { |
|
|
29 | for my $path (@{ cf::player::maps $login or [] }) { |
|
|
30 | cf::cede_to_tick; |
|
|
31 | |
|
|
32 | $path =~ /^~[^\/]+(\/.*)$/ |
|
|
33 | or next; # doh |
|
|
34 | |
|
|
35 | my $base = cf::map::find $1; |
|
|
36 | |
|
|
37 | # skip maps without base maps on the assumption |
|
|
38 | # that those are old, unresettable maps |
|
|
39 | next unless $base; |
|
|
40 | |
|
|
41 | # skip unresettable maps, for speed |
|
|
42 | next if $base->{deny_reset}; |
|
|
43 | |
|
|
44 | my $map = cf::map::find $path; |
|
|
45 | |
|
|
46 | if ($map->{deny_reset}) { |
|
|
47 | warn "found noreset map with resettable base map, resetting: $path\n"; |
|
|
48 | delete $map->{deny_reset}; |
|
|
49 | } |
|
|
50 | } |
|
|
51 | } |
|
|
52 | }; |
|
|
53 | |
| 12 | our $SCHEDULER = cf::coro { |
54 | our $SCHEDULER = cf::async_ext { |
|
|
55 | my $timer = Coro::Event->timer (after => 1); |
|
|
56 | |
| 13 | while () { |
57 | while () { |
| 14 | Coro::Timer::sleep $SCHEDULE_INTERVAL; |
58 | $timer->interval ($SCHEDULE_INTERVAL); |
|
|
59 | $timer->next unless $cf::LOADAVG > $SWAP_LOAD2; |
| 15 | |
60 | |
| 16 | # this weird form of iteration over values is used because |
61 | # this weird form of iteration over values is used because |
| 17 | # the hash changes underneath us frequently, and for |
62 | # the hash changes underneath us frequently, and for |
| 18 | # keeps a direct reference to the value without (in 5.8 perls) |
63 | # keeps a direct reference to the value without (in 5.8 perls) |
| 19 | # keeping a reference, so this is prone to crashes or worse. |
64 | # keeping a reference, so this is prone to crashes or worse. |
| … | |
… | |
| 31 | # delete $map->{active}; |
76 | # delete $map->{active}; |
| 32 | # } |
77 | # } |
| 33 | if ($map->should_reset) { |
78 | if ($map->should_reset) { |
| 34 | $map->reset; |
79 | $map->reset; |
| 35 | } elsif ($map->in_memory == cf::MAP_IN_MEMORY) { |
80 | } elsif ($map->in_memory == cf::MAP_IN_MEMORY) { |
|
|
81 | my $max_idle = cf::clamp +(cf::lerp $cf::LOADAVG, $SWAP_LOAD1, $SWAP_LOAD2, $SWAP_TIMEOUT, $cf::TICK * 1.5), |
|
|
82 | $cf::TICK * 1.5, $SWAP_TIMEOUT; |
|
|
83 | |
| 36 | if ($map->last_access + $SWAP_TIMEOUT <= $cf::RUNTIME && !$map->players) { |
84 | if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) { |
| 37 | $map->swap_out; |
85 | $map->swap_out; |
| 38 | Coro::Timer::sleep $SAVE_INTERVAL; |
|
|
| 39 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
86 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
| 40 | $map->save; |
87 | $map->save; |
| 41 | Coro::Timer::sleep $SAVE_INTERVAL; |
88 | $map->{last_save} -= rand; # randomise map save times a bit |
| 42 | } |
89 | } |
| 43 | } |
90 | } |
| 44 | }; |
91 | }; |
| 45 | warn $@ if $@; |
92 | warn $@ if $@; |
| 46 | Coro::cede; |
93 | cf::cede_to_tick; |
| 47 | }; |
94 | }; |
| 48 | } |
95 | } |
| 49 | }; |
96 | }; |
| 50 | |
97 | |
| 51 | $SCHEDULER->prio (-2); |
98 | $SCHEDULER->prio (-2); |
