1 | #! perl # MANDATORY |
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 = $cf::CFG{swap_timeout} || 300; # number of seconds after which inactive maps 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 = $cf::CFG{schedule_interval} || .8; # 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 = $cf::CFG{save_timeout} || 30; # save maps every n seconds |
10 | our $SAVE_TIMEOUT = $cf::CFG{save_timeout} || 30; # save maps every n seconds |
11 | our $SWAP_LOAD1 = $cf::CFG{swap_load1} || .1; # start aggressively swapping at this load |
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 |
12 | our $SWAP_LOAD2 = $cf::CFG{swap_load2} || .6; # swap as fast as possible at this load |
13 | |
13 | |
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14 | cf::post_init { |
14 | cf::async_ext { |
15 | cf::async_ext { |
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16 | $Coro::current->{desc} = "startup map scanner"; |
15 | $Coro::current->prio (Coro::PRIO_MIN); |
17 | $Coro::current->prio (Coro::PRIO_MIN); |
16 | |
18 | |
17 | # load the header of swapped-out maps. |
19 | # load the header of swapped-out maps. |
18 | # this is not a correctness issue, it simply saves diskspace |
20 | # this is not a correctness issue, it simply saves diskspace |
19 | # because old files will get cleaned up on reset time |
21 | # because old files will get cleaned up on reset time |
20 | Coro::Timer::sleep 0.25; |
22 | Coro::Timer::sleep 0.25; |
21 | |
23 | |
22 | for my $map (@{ cf::map::tmp_maps or [] }) { |
24 | for my $path (@{ cf::map::tmp_maps or [] }, @{ cf::map::random_maps or [] }) { |
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25 | cf::cede_to_tick; |
23 | cf::map::find $map; |
26 | cf::map::find $path; |
24 | cf::wait_for_tick; Coro::cede; |
27 | } |
25 | } |
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26 | |
28 | |
27 | #TODO: should also preload random maps... |
29 | # now hunt for resettable per-player maps |
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30 | for my $login (@{ cf::player::list_logins or [] }) { |
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31 | for my $path (@{ cf::player::maps $login or [] }) { |
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32 | cf::cede_to_tick; |
28 | |
33 | |
29 | # now hunt for resettable per-player maps |
34 | $path =~ /^~[^\/]+(\/.*)$/ |
30 | for my $login (@{ cf::player::list_logins or [] }) { |
35 | or next; # doh |
31 | for my $path (@{ cf::player::maps $login or [] }) { |
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32 | Coro::cede; |
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33 | |
36 | |
34 | $path =~ /^~[^\/]+(\/.*)$/ |
37 | my $base = cf::map::find $1; |
35 | or next; # doh |
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36 | |
38 | |
37 | my $base = cf::map::find $1; |
39 | # skip maps without base maps on the assumption |
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40 | # that those are old, unresettable maps |
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41 | next unless $base; |
38 | |
42 | |
39 | # skip maps without base maps on the assumption |
43 | # skip unresettable maps, for speed |
40 | # that those are old, unresettable maps |
44 | next if $base->{deny_reset}; |
41 | next unless $base; |
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42 | |
45 | |
43 | # skip unresettable maps, for speed |
46 | my $map = cf::map::find $path; |
44 | next if $base->{deny_reset}; |
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45 | |
47 | |
46 | my $map = cf::map::find $path; |
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47 | cf::wait_for_tick; |
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48 | |
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49 | if ($map->{deny_reset}) { |
48 | if ($map->{deny_reset}) { |
50 | warn "found noreset map with resettable base map, resetting: $path\n"; |
49 | warn "found noreset map with resettable base map, resetting: $path\n"; |
51 | delete $map->{deny_reset}; |
50 | delete $map->{deny_reset}; |
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51 | } |
52 | } |
52 | } |
53 | } |
53 | } |
54 | } |
54 | }; |
55 | }; |
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56 | |
55 | |
57 | our $SCHEDULER = cf::async_ext { |
56 | our $SCHEDULER = cf::async_ext { |
58 | while () { |
57 | $Coro::current->{desc} = "map scheduler"; |
59 | Coro::Event::do_timer (after => $SCHEDULE_INTERVAL) |
58 | $Coro::current->prio (Coro::PRIO_MAX); |
60 | unless $cf::LOADAVG > $SWAP_LOAD2; |
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61 | |
59 | |
62 | # this weird form of iteration over values is used because |
60 | while () { |
63 | # the hash changes underneath us frequently, and for |
61 | if ($cf::LOADAVG > $SWAP_LOAD2) { |
64 | # keeps a direct reference to the value without (in 5.8 perls) |
62 | cf::wait_for_tick; |
65 | # keeping a reference, so this is prone to crashes or worse. |
63 | } else { |
66 | my @maps = keys %cf::MAP; |
64 | Coro::EV::timer_once $SCHEDULE_INTERVAL; |
67 | for (@maps) { |
65 | } |
68 | my $map = $cf::MAP{$_} |
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69 | or next; |
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70 | $map->valid or next; |
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71 | |
66 | |
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67 | # this weird form of iteration over values is used because |
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68 | # the hash changes underneath us frequently, and for |
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69 | # keeps a direct reference to the value without (in 5.8 perls) |
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70 | # keeping a reference, so this is prone to crashes or worse. |
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71 | my @maps = keys %cf::MAP; |
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72 | for (@maps) { |
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73 | my $map = $cf::MAP{$_} |
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74 | or next; |
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75 | $map->valid or next; |
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76 | |
72 | eval { |
77 | eval { |
73 | # not yet, because maps might become visible to players nearby |
78 | # not yet, because maps might become visible to players nearby |
74 | # we need to remove the map from %cf::MAP and all tiled map links |
79 | # we need to remove the map from %cf::MAP and all tiled map links |
75 | # if ($last_access + $DEACTIVATE_TIMEOUT <= $cf::RUNTIME) { |
80 | # if ($last_access + $DEACTIVATE_TIMEOUT <= $cf::RUNTIME) { |
76 | # $map->deactivate; |
81 | # $map->deactivate; |
77 | # delete $map->{active}; |
82 | # delete $map->{active}; |
78 | # } |
83 | # } |
79 | if ($map->should_reset) { |
84 | if ($map->should_reset) { |
80 | $map->reset; |
85 | $map->reset; |
81 | } elsif ($map->in_memory == cf::MAP_IN_MEMORY) { |
86 | } elsif ($map->in_memory == cf::MAP_ACTIVE) { |
82 | my $max_idle = cf::clamp +(cf::lerp $cf::LOADAVG, $SWAP_LOAD1, $SWAP_LOAD2, $SWAP_TIMEOUT, 0), 0, $SWAP_TIMEOUT; |
87 | my $max_idle = cf::clamp +(cf::lerp $cf::LOADAVG, $SWAP_LOAD1, $SWAP_LOAD2, $SWAP_TIMEOUT, $cf::TICK * 1.5), |
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88 | $cf::TICK * 1.5, $SWAP_TIMEOUT; |
83 | |
89 | |
84 | if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) { |
90 | if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) { |
85 | $map->swap_out; |
91 | $map->swap_out; |
86 | cf::wait_for_tick unless $cf::LOADAVG > $SWAP_LOAD2; |
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87 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
92 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
88 | $map->save; |
93 | $map->save; |
89 | cf::wait_for_tick unless $cf::LOADAVG > $SWAP_LOAD2; |
94 | $map->{last_save} -= rand; # randomise map save times a bit |
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95 | } |
90 | } |
96 | } |
91 | } |
97 | }; |
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98 | warn $@ if $@; |
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99 | cf::cede_to_tick; |
92 | }; |
100 | }; |
93 | warn $@ if $@; |
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94 | cf::cede_to_tick; |
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95 | }; |
101 | } |
96 | } |
102 | }; |
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103 | |
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104 | $SCHEDULER->prio (-2); |
97 | }; |
105 | }; |
98 | |
106 | |
99 | $SCHEDULER->prio (-2); |
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100 | |
107 | |