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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} || 2; # 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} || .4; # swap as fast as possible at this load |
13 | |
13 | |
14 | cf::async_ext { |
14 | cf::async_ext { |
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|
15 | $Coro::current->{desc} = "startup map scanner"; |
15 | $Coro::current->prio (Coro::PRIO_MIN); |
16 | $Coro::current->prio (Coro::PRIO_MIN); |
16 | |
17 | |
17 | # load the header of swapped-out maps. |
18 | # load the header of swapped-out maps. |
18 | # this is not a correctness issue, it simply saves diskspace |
19 | # this is not a correctness issue, it simply saves diskspace |
19 | # because old files will get cleaned up on reset time |
20 | # because old files will get cleaned up on reset time |
20 | Coro::Timer::sleep 0.25; |
21 | Coro::Timer::sleep 0.25; |
21 | |
22 | |
22 | for my $path (@{ cf::map::tmp_maps or [] }, @{ cf::map::random_maps or [] }) { |
23 | for my $path (@{ cf::map::tmp_maps or [] }, @{ cf::map::random_maps or [] }) { |
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|
24 | cf::cede_to_tick; |
23 | cf::map::find $path; |
25 | cf::map::find $path; |
24 | cf::wait_for_tick; Coro::cede; |
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|
25 | } |
26 | } |
26 | |
27 | |
27 | # now hunt for resettable per-player maps |
28 | # now hunt for resettable per-player maps |
28 | for my $login (@{ cf::player::list_logins or [] }) { |
29 | for my $login (@{ cf::player::list_logins or [] }) { |
29 | for my $path (@{ cf::player::maps $login or [] }) { |
30 | for my $path (@{ cf::player::maps $login or [] }) { |
30 | Coro::cede; |
31 | cf::cede_to_tick; |
31 | |
32 | |
32 | $path =~ /^~[^\/]+(\/.*)$/ |
33 | $path =~ /^~[^\/]+(\/.*)$/ |
33 | or next; # doh |
34 | or next; # doh |
34 | |
35 | |
35 | my $base = cf::map::find $1; |
36 | my $base = cf::map::find $1; |
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40 | |
41 | |
41 | # skip unresettable maps, for speed |
42 | # skip unresettable maps, for speed |
42 | next if $base->{deny_reset}; |
43 | next if $base->{deny_reset}; |
43 | |
44 | |
44 | my $map = cf::map::find $path; |
45 | my $map = cf::map::find $path; |
45 | cf::wait_for_tick; |
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|
46 | |
46 | |
47 | if ($map->{deny_reset}) { |
47 | if ($map->{deny_reset}) { |
48 | warn "found noreset map with resettable base map, resetting: $path\n"; |
48 | warn "found noreset map with resettable base map, resetting: $path\n"; |
49 | delete $map->{deny_reset}; |
49 | delete $map->{deny_reset}; |
50 | } |
50 | } |
51 | } |
51 | } |
52 | } |
52 | } |
53 | }; |
53 | }; |
54 | |
54 | |
55 | our $SCHEDULER = cf::async_ext { |
55 | our $SCHEDULER = cf::async_ext { |
|
|
56 | $Coro::current->{desc} = "map scheduler"; |
|
|
57 | $Coro::current->prio (Coro::PRIO_MAX); |
|
|
58 | |
56 | while () { |
59 | while () { |
57 | Coro::Event::do_timer (after => $SCHEDULE_INTERVAL) |
|
|
58 | unless $cf::LOADAVG > $SWAP_LOAD2; |
60 | if ($cf::LOADAVG > $SWAP_LOAD2) { |
|
|
61 | Coro::EV::timer_once 0.05; |
|
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62 | cf::wait_for_tick; |
|
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63 | } else { |
|
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64 | Coro::EV::timer_once $SCHEDULE_INTERVAL; |
|
|
65 | } |
59 | |
66 | |
60 | # this weird form of iteration over values is used because |
67 | # this weird form of iteration over values is used because |
61 | # the hash changes underneath us frequently, and for |
68 | # the hash changes underneath us frequently, and for |
62 | # keeps a direct reference to the value without (in 5.8 perls) |
69 | # keeps a direct reference to the value without (in 5.8 perls) |
63 | # keeping a reference, so this is prone to crashes or worse. |
70 | # keeping a reference, so this is prone to crashes or worse. |
… | |
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75 | # delete $map->{active}; |
82 | # delete $map->{active}; |
76 | # } |
83 | # } |
77 | if ($map->should_reset) { |
84 | if ($map->should_reset) { |
78 | $map->reset; |
85 | $map->reset; |
79 | } elsif ($map->in_memory == cf::MAP_IN_MEMORY) { |
86 | } elsif ($map->in_memory == cf::MAP_IN_MEMORY) { |
80 | 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), |
|
|
88 | $cf::TICK * 1.5, $SWAP_TIMEOUT; |
81 | |
89 | |
82 | if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) { |
90 | if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) { |
83 | $map->swap_out; |
91 | $map->swap_out; |
84 | cf::wait_for_tick unless $cf::LOADAVG > $SWAP_LOAD2; |
|
|
85 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
92 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
86 | $map->save; |
93 | $map->save; |
87 | cf::wait_for_tick unless $cf::LOADAVG > $SWAP_LOAD2; |
94 | $map->{last_save} -= rand; # randomise map save times a bit |
88 | } |
95 | } |
89 | } |
96 | } |
90 | }; |
97 | }; |
91 | warn $@ if $@; |
98 | warn $@ if $@; |
92 | cf::cede_to_tick; |
99 | cf::cede_to_tick; |