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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} || 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 $path (@{ cf::map::tmp_maps or [] }, @{ cf::map::random_maps or [] }) { |
24 | for my $path (@{ cf::map::tmp_maps or [] }, @{ cf::map::random_maps or [] }) { |
23 | cf::cede_to_tick; |
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24 | cf::map::find $path; |
25 | cf::map::find $path; |
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 | cf::cede_to_tick; |
31 | $path =~ /^~[^\/]+(\/.*)$/ |
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32 | or next; # doh |
31 | |
33 | |
32 | $path =~ /^~[^\/]+(\/.*)$/ |
34 | my $base = cf::map::find $1; |
33 | or next; # doh |
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34 | |
35 | |
35 | my $base = cf::map::find $1; |
36 | # skip maps without base maps on the assumption |
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37 | # that those are old, unresettable maps |
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38 | next unless $base; |
36 | |
39 | |
37 | # skip maps without base maps on the assumption |
40 | # skip unresettable maps, for speed |
38 | # that those are old, unresettable maps |
41 | next if $base->{deny_reset}; |
39 | next unless $base; |
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40 | |
42 | |
41 | # skip unresettable maps, for speed |
43 | my $map = cf::map::find $path; |
42 | next if $base->{deny_reset}; |
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43 | |
44 | |
44 | my $map = cf::map::find $path; |
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45 | |
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46 | if ($map->{deny_reset}) { |
45 | if ($map->{deny_reset}) { |
47 | warn "found noreset map with resettable base map, resetting: $path\n"; |
46 | warn "found noreset map with resettable base map, resetting: $path\n"; |
48 | delete $map->{deny_reset}; |
47 | delete $map->{deny_reset}; |
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48 | } |
49 | } |
49 | } |
50 | } |
50 | } |
51 | } |
51 | }; |
52 | }; |
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53 | |
52 | |
54 | our $SCHEDULER = cf::async_ext { |
53 | our $SCHEDULER = cf::async_ext { |
55 | my $timer = Coro::Event->timer (after => 1); |
54 | $Coro::current->{desc} = "map scheduler"; |
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55 | $Coro::current->prio (Coro::PRIO_MAX); |
56 | |
56 | |
57 | while () { |
57 | while () { |
58 | $timer->interval ($SCHEDULE_INTERVAL); |
58 | if ($cf::LOADAVG > $SWAP_LOAD2) { |
59 | $timer->next unless $cf::LOADAVG > $SWAP_LOAD2; |
59 | cf::wait_for_tick; |
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60 | } else { |
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61 | Coro::EV::timer_once $SCHEDULE_INTERVAL; |
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62 | } |
60 | |
63 | |
61 | # this weird form of iteration over values is used because |
64 | # this weird form of iteration over values is used because |
62 | # the hash changes underneath us frequently, and for |
65 | # the hash changes underneath us frequently, and 'for' |
63 | # keeps a direct reference to the value without (in 5.8 perls) |
66 | # keeps a direct reference to the value without (in 5.8 perls) |
64 | # keeping a reference, so this is prone to crashes or worse. |
67 | # keeping a reference, so this is prone to crashes or worse. |
65 | my @maps = keys %cf::MAP; |
68 | my @maps = keys %cf::MAP; |
66 | for (@maps) { |
69 | for (@maps) { |
67 | my $map = $cf::MAP{$_} |
70 | my $map = $cf::MAP{$_} |
68 | or next; |
71 | or next; |
69 | $map->valid or next; |
72 | $map->valid or next; |
70 | |
73 | |
71 | eval { |
74 | eval { |
72 | # not yet, because maps might become visible to players nearby |
75 | # not yet, because maps might become visible to players nearby |
73 | # we need to remove the map from %cf::MAP and all tiled map links |
76 | # we need to remove the map from %cf::MAP and all tiled map links |
74 | # if ($last_access + $DEACTIVATE_TIMEOUT <= $cf::RUNTIME) { |
77 | # if ($last_access + $DEACTIVATE_TIMEOUT <= $cf::RUNTIME) { |
75 | # $map->deactivate; |
78 | # $map->deactivate; |
76 | # delete $map->{active}; |
79 | # delete $map->{active}; |
77 | # } |
80 | # } |
78 | if ($map->should_reset) { |
81 | if ($map->should_reset) { |
79 | $map->reset; |
82 | $map->reset; |
80 | } elsif ($map->in_memory == cf::MAP_IN_MEMORY) { |
83 | } elsif ($map->in_memory == cf::MAP_ACTIVE) { |
81 | my $max_idle = cf::clamp +(cf::lerp $cf::LOADAVG, $SWAP_LOAD1, $SWAP_LOAD2, $SWAP_TIMEOUT, $cf::TICK * 1.5), |
84 | 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; |
85 | $cf::TICK * 1.5, $SWAP_TIMEOUT; |
83 | |
86 | |
84 | if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) { |
87 | if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) { |
85 | $map->swap_out; |
88 | $map->swap_out; |
86 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
89 | } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { |
87 | $map->save; |
90 | $map->save; |
88 | $map->{last_save} -= rand; # randomise map save times a bit |
91 | $map->{last_save} -= cf::rndm; # randomise map save times a bit |
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92 | } |
89 | } |
93 | } |
90 | } |
94 | }; |
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95 | warn $@ if $@; |
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96 | cf::cede_to_tick; |
91 | }; |
97 | }; |
92 | warn $@ if $@; |
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93 | cf::cede_to_tick; |
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94 | }; |
98 | } |
95 | } |
99 | }; |
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100 | |
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101 | $SCHEDULER->prio (-2); |
96 | }; |
102 | }; |
97 | |
103 | |
98 | $SCHEDULER->prio (-2); |
104 | # purely for debugging, will load ALL maps |
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105 | sub loadall { |
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106 | my $maps = cf::map::static_maps; |
99 | |
107 | |
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108 | for my $path (@$maps) { |
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109 | my $map = cf::map::find $path |
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110 | or warn "ERROR: unable to find map $path\n"; |
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111 | $map->load; |
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112 | } |
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113 | } |
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114 | |