| 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 | # it also contains the map prefetching logic |
| 6 | |
6 | |
| 7 | 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 |
| 8 | our $SWAP_TIMEOUT = 35; # 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 |
| 9 | our $SCHEDULE_INTERVAL = 2; # time the map scheduler sleeps between runs |
9 | our $SCHEDULE_INTERVAL = $cf::CFG{schedule_interval} || 5; # time the map scheduler sleeps between runs |
| 10 | our $SAVE_TIMEOUT = 20; # save maps every n seconds |
10 | our $SAVE_TIMEOUT = $cf::CFG{save_timeout} || 30; # save maps every n seconds |
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11 | our $SWAP_LOAD1 = $cf::CFG{swap_load1} || .1; # start aggressively swapping at this load |
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12 | our $SWAP_LOAD2 = $cf::CFG{swap_load2} || .6; # swap as fast as possible at this load |
| 11 | |
13 | |
| 12 | cf::async_ext { |
14 | cf::async_ext { |
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15 | $Coro::current->{desc} = "startup map scanner"; |
| 13 | $Coro::current->prio (Coro::PRIO_MIN); |
16 | $Coro::current->prio (Coro::PRIO_MIN); |
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17 | |
| 14 | # load the header of swapped-out maps. |
18 | # load the header of swapped-out maps. |
| 15 | # this is not a correctness issue, it simply saves diskspace |
19 | # this is not a correctness issue, it simply saves diskspace |
| 16 | # because old files will get cleaned up on reset time |
20 | # because old files will get cleaned up on reset time |
| 17 | Coro::Timer::sleep 1; |
21 | Coro::Timer::sleep 0.25; |
| 18 | |
22 | |
| 19 | my $files = Coro::AIO::aio_readdir cf::localdir . "/" . cf::tmpdir; |
23 | for my $path (@{ cf::map::tmp_maps or [] }, @{ cf::map::random_maps or [] }) { |
| 20 | |
24 | cf::cede_to_tick; |
| 21 | for my $map (@$files) { |
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| 22 | utf8::decode $map; |
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| 23 | next if $map =~ /\.(?:pst|meta)$/; |
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| 24 | $map =~ s/∕/\//g; |
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| 25 | cf::map::find $map; |
25 | cf::map::find $path; |
| 26 | $cf::WAIT_FOR_TICK_ONE->wait; |
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| 27 | } |
26 | } |
| 28 | |
27 | |
| 29 | #TODO: should also preload random maps... |
28 | # now hunt for resettable per-player maps |
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29 | for my $login (@{ cf::player::list_logins or [] }) { |
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30 | for my $path (@{ cf::player::maps $login or [] }) { |
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31 | cf::cede_to_tick; |
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32 | |
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33 | $path =~ /^~[^\/]+(\/.*)$/ |
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34 | or next; # doh |
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35 | |
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36 | my $base = cf::map::find $1; |
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37 | |
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38 | # skip maps without base maps on the assumption |
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39 | # that those are old, unresettable maps |
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40 | next unless $base; |
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41 | |
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42 | # skip unresettable maps, for speed |
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43 | next if $base->{deny_reset}; |
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44 | |
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45 | my $map = cf::map::find $path; |
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46 | |
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47 | if ($map->{deny_reset}) { |
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48 | warn "found noreset map with resettable base map, resetting: $path\n"; |
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49 | delete $map->{deny_reset}; |
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50 | } |
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51 | } |
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52 | } |
| 30 | }; |
53 | }; |
| 31 | |
54 | |
| 32 | our $SCHEDULER = cf::async_ext { |
55 | our $SCHEDULER = cf::async_ext { |
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56 | $Coro::current->{desc} = "map scheduler"; |
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57 | $Coro::current->prio (Coro::PRIO_MAX); |
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58 | |
| 33 | while () { |
59 | while () { |
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60 | if ($cf::LOADAVG > $SWAP_LOAD2) { |
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61 | cf::wait_for_tick; |
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62 | } else { |
| 34 | Coro::Timer::sleep $SCHEDULE_INTERVAL; |
63 | Coro::EV::timer_once $SCHEDULE_INTERVAL; |
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64 | } |
| 35 | |
65 | |
| 36 | # this weird form of iteration over values is used because |
66 | # this weird form of iteration over values is used because |
| 37 | # the hash changes underneath us frequently, and for |
67 | # the hash changes underneath us frequently, and for |
| 38 | # keeps a direct reference to the value without (in 5.8 perls) |
68 | # keeps a direct reference to the value without (in 5.8 perls) |
| 39 | # keeping a reference, so this is prone to crashes or worse. |
69 | # keeping a reference, so this is prone to crashes or worse. |
| … | |
… | |
| 50 | # $map->deactivate; |
80 | # $map->deactivate; |
| 51 | # delete $map->{active}; |
81 | # delete $map->{active}; |
| 52 | # } |
82 | # } |
| 53 | if ($map->should_reset) { |
83 | if ($map->should_reset) { |
| 54 | $map->reset; |
84 | $map->reset; |
| 55 | } elsif ($map->in_memory == cf::MAP_IN_MEMORY) { |
85 | } elsif ($map->in_memory == cf::MAP_ACTIVE) { |
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86 | my $max_idle = cf::clamp +(cf::lerp $cf::LOADAVG, $SWAP_LOAD1, $SWAP_LOAD2, $SWAP_TIMEOUT, $cf::TICK * 1.5), |
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87 | $cf::TICK * 1.5, $SWAP_TIMEOUT; |
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88 | |
| 56 | if ($map->last_access + $SWAP_TIMEOUT <= $cf::RUNTIME && !$map->players) { |
89 | if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) { |
| 57 | $cf::WAIT_FOR_TICK_ONE->wait; |
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| 58 | $map->swap_out; |
90 | $map->swap_out; |
| 59 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
91 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
| 60 | $cf::WAIT_FOR_TICK_ONE->wait; |
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| 61 | $map->save; |
92 | $map->save; |
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93 | $map->{last_save} -= rand; # randomise map save times a bit |
| 62 | } |
94 | } |
| 63 | } |
95 | } |
| 64 | }; |
96 | }; |
| 65 | warn $@ if $@; |
97 | warn $@ if $@; |
| 66 | Coro::cede; |
98 | cf::cede_to_tick; |
| 67 | }; |
99 | }; |
| 68 | } |
100 | } |
| 69 | }; |
101 | }; |
| 70 | |
102 | |
| 71 | $SCHEDULER->prio (-2); |
103 | $SCHEDULER->prio (-2); |
