ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/deliantra/server/ext/map-scheduler.ext
(Generate patch)

Comparing deliantra/server/ext/map-scheduler.ext (file contents):
Revision 1.39 by root, Sat Jul 28 13:13:36 2007 UTC vs.
Revision 1.50 by root, Fri Oct 23 03:28:11 2009 UTC

… …
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
8our $SWAP_TIMEOUT = $cf::CFG{swap_timeout} || 300; # number of seconds after which inactive maps get swapped out 8our $SWAP_TIMEOUT = $cf::CFG{swap_timeout} || 300; # number of seconds after which inactive maps get swapped out
9our $SCHEDULE_INTERVAL = $cf::CFG{schedule_interval} || .8; # time the map scheduler sleeps between runs 9our $SCHEDULE_INTERVAL = $cf::CFG{schedule_interval} || 5; # time the map scheduler sleeps between runs
10our $SAVE_TIMEOUT = $cf::CFG{save_timeout} || 30; # save maps every n seconds 10our $SAVE_TIMEOUT = $cf::CFG{save_timeout} || 30; # save maps every n seconds
11our $SWAP_LOAD1 = $cf::CFG{swap_load1} || .1; # start aggressively swapping at this load 11our $SWAP_LOAD1 = $cf::CFG{swap_load1} || .1; # start aggressively swapping at this load
12our $SWAP_LOAD2 = $cf::CFG{swap_load2} || .4; # swap as fast as possible at this load 12our $SWAP_LOAD2 = $cf::CFG{swap_load2} || .6; # swap as fast as possible at this load
13 13
14warn "load1 ", $SWAP_LOAD1;#d# 14cf::post_init {
15warn "load2 ", $SWAP_LOAD2;#d# 15 cf::async_ext {
16 $Coro::current->{desc} = "startup map scanner";
17 $Coro::current->prio (Coro::PRIO_MIN);
16 18
17cf::async_ext { 19 # load the header of swapped-out maps.
18 $Coro::current->prio (Coro::PRIO_MIN); 20 # this is not a correctness issue, it simply saves diskspace
21 # because old files will get cleaned up on reset time
22 Coro::Timer::sleep 0.25;
19 23
20 # load the header of swapped-out maps. 24 for my $path (@{ cf::map::tmp_maps or [] }, @{ cf::map::random_maps or [] }) {
21 # this is not a correctness issue, it simply saves diskspace 25 cf::cede_to_tick;
22 # because old files will get cleaned up on reset time 26 cf::map::find $path;
23 Coro::Timer::sleep 0.25; 27 }
24 28
25 for my $path (@{ cf::map::tmp_maps or [] }, @{ cf::map::random_maps or [] }) { 29 # now hunt for resettable per-player maps
30 for my $login (@{ cf::player::list_logins or [] }) {
31 for my $path (@{ cf::player::maps $login or [] }) {
26 cf::cede_to_tick; 32 cf::cede_to_tick;
27 cf::map::find $path;
28 }
29 33
30 # now hunt for resettable per-player maps 34 $path =~ /^~[^\/]+(\/.*)$/
31 for my $login (@{ cf::player::list_logins or [] }) { 35 or next; # doh
32 for my $path (@{ cf::player::maps $login or [] }) {
33 cf::cede_to_tick;
34 36
35 $path =~ /^~[^\/]+(\/.*)$/ 37 my $base = cf::map::find $1;
36 or next; # doh
37 38
38 my $base = cf::map::find $1; 39 # skip maps without base maps on the assumption
40 # that those are old, unresettable maps
41 next unless $base;
39 42
40 # skip maps without base maps on the assumption 43 # skip unresettable maps, for speed
41 # that those are old, unresettable maps 44 next if $base->{deny_reset};
42 next unless $base;
43 45
44 # skip unresettable maps, for speed 46 my $map = cf::map::find $path;
45 next if $base->{deny_reset};
46 47
47 my $map = cf::map::find $path;
48
49 if ($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};
51 }
52 } 52 }
53 } 53 }
54 } 54 };
55};
56 55
57our $SCHEDULER = cf::async_ext { 56 our $SCHEDULER = cf::async_ext {
58 my $timer = Coro::Event->timer (after => 1); 57 $Coro::current->{desc} = "map scheduler";
58 $Coro::current->prio (Coro::PRIO_MAX);
59 59
60 while () { 60 while () {
61 $timer->interval ($SCHEDULE_INTERVAL); 61 if ($cf::LOADAVG > $SWAP_LOAD2) {
62 $timer->next unless $cf::LOADAVG > $SWAP_LOAD2; 62 cf::wait_for_tick;
63 } else {
64 Coro::EV::timer_once $SCHEDULE_INTERVAL;
65 }
63 66
64 # this weird form of iteration over values is used because 67 # this weird form of iteration over values is used because
65 # the hash changes underneath us frequently, and for 68 # the hash changes underneath us frequently, and for
66 # 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)
67 # keeping a reference, so this is prone to crashes or worse. 70 # keeping a reference, so this is prone to crashes or worse.
68 my @maps = keys %cf::MAP; 71 my @maps = keys %cf::MAP;
69 for (@maps) { 72 for (@maps) {
70 my $map = $cf::MAP{$_} 73 my $map = $cf::MAP{$_}
71 or next; 74 or next;
72 $map->valid or next; 75 $map->valid or next;
73 76
74 eval { 77 eval {
75 # not yet, because maps might become visible to players nearby 78 # not yet, because maps might become visible to players nearby
76 # we need to remove the map from %cf::MAP and all tiled map links 79 # we need to remove the map from %cf::MAP and all tiled map links
77# if ($last_access + $DEACTIVATE_TIMEOUT <= $cf::RUNTIME) { 80# if ($last_access + $DEACTIVATE_TIMEOUT <= $cf::RUNTIME) {
78# $map->deactivate; 81# $map->deactivate;
79# delete $map->{active}; 82# delete $map->{active};
80# } 83# }
81 if ($map->should_reset) { 84 if ($map->should_reset) {
82 $map->reset; 85 $map->reset;
83 } elsif ($map->in_memory == cf::MAP_IN_MEMORY) { 86 } elsif ($map->in_memory == cf::MAP_ACTIVE) {
84 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, $SWAP_TIMEOUT;
85 89
86 if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) { 90 if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) {
87 $map->swap_out; 91 $map->swap_out;
88 } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { 92 } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) {
89 $map->save; 93 $map->save;
90 $map->{last_save} -= rand; # randomise map save times a bit 94 $map->{last_save} -= rand; # randomise map save times a bit
95 }
91 } 96 }
92 } 97 };
98 warn $@ if $@;
99 cf::cede_to_tick;
93 }; 100 };
94 warn $@ if $@;
95 cf::cede_to_tick;
96 }; 101 }
97 } 102 };
103
104 $SCHEDULER->prio (-2);
98}; 105};
99 106
100$SCHEDULER->prio (-2); 107# purely for debugging, will load ALL maps
108sub loadall {
109 my $maps = cf::map::static_maps;
101 110
111 for my $path (@$maps) {
112 my $map = cf::map::find $path
113 or warn "ERROR: unable to find map $path\n";
114 $map->load;
115 }
116}
117
118

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines