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Comparing deliantra/server/ext/map-scheduler.ext (file contents):
Revision 1.24 by root, Mon Jan 22 03:44:41 2007 UTC vs.
Revision 1.28 by root, Mon Jan 29 17:57:22 2007 UTC

… …
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
8our $SWAP_TIMEOUT = 35; # number of seconds after which maps inactive get swapped out 8our $SWAP_TIMEOUT = $cf::CFG{swap_timeout} || 35; # number of seconds after which maps inactive get swapped out
9our $SCHEDULE_INTERVAL = 2; # time the map scheduler sleeps between runs 9our $SCHEDULE_INTERVAL = $cf::CFG{schedule_interval} || 10; # time the map scheduler sleeps between runs
10our $SAVE_TIMEOUT = 20; # save maps every n seconds 10our $SAVE_TIMEOUT = $cf::CFG{save_timeout} || 20; # save maps every n seconds
11our $MAX_ACTIVES = $cf::CFG{max_actives} || 200000; # swap aggressively when > this many objects are active
11 12
12cf::async_ext { 13cf::async_ext {
13 $Coro::current->prio (Coro::PRIO_MIN); 14 $Coro::current->prio (Coro::PRIO_MIN);
14 # load the header of swapped-out maps. 15 # load the header of swapped-out maps.
15 # this is not a correctness issue, it simply saves diskspace 16 # this is not a correctness issue, it simply saves diskspace
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19 my $files = Coro::AIO::aio_readdir cf::localdir . "/" . cf::tmpdir; 20 my $files = Coro::AIO::aio_readdir cf::localdir . "/" . cf::tmpdir;
20 21
21 for my $map (@$files) { 22 for my $map (@$files) {
22 utf8::decode $map; 23 utf8::decode $map;
23 next if $map =~ /\.(?:pst|meta)$/; 24 next if $map =~ /\.(?:pst|meta)$/;
24 $map =~ s/∕/\//g;
25 $map =~ s/\.map$//;
26 cf::map::find $map; 25 cf::map::find $map;
27 $cf::WAIT_FOR_TICK_ONE->wait; 26 $cf::WAIT_FOR_TICK_ONE->wait;
28 } 27 }
29 28
30 #TODO: should also preload random maps... 29 #TODO: should also preload random maps...
31}; 30};
32 31
33our $SCHEDULER = cf::async_ext { 32our $SCHEDULER = cf::async_ext {
34 my $schedule_interval = Coro::Event->timer (after => 1, interval => $SCHEDULE_INTERVAL); 33 my $schedule_interval = Coro::Event->timer (after => 1, interval => $SCHEDULE_INTERVAL);
35 while () { 34 while () {
36 $schedule_interval->next; 35 $schedule_interval->next unless cf::object::actives_size > $MAX_ACTIVES;
37 36
38 # this weird form of iteration over values is used because 37 # this weird form of iteration over values is used because
39 # the hash changes underneath us frequently, and for 38 # the hash changes underneath us frequently, and for
40 # keeps a direct reference to the value without (in 5.8 perls) 39 # keeps a direct reference to the value without (in 5.8 perls)
41 # keeping a reference, so this is prone to crashes or worse. 40 # keeping a reference, so this is prone to crashes or worse.
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53# delete $map->{active}; 52# delete $map->{active};
54# } 53# }
55 if ($map->should_reset) { 54 if ($map->should_reset) {
56 $map->reset; 55 $map->reset;
57 } elsif ($map->in_memory == cf::MAP_IN_MEMORY) { 56 } elsif ($map->in_memory == cf::MAP_IN_MEMORY) {
57 my $max_idle = cf::object::actives_size > $MAX_ACTIVES ? 1 : $SWAP_TIMEOUT;
58 if ($map->last_access + $SWAP_TIMEOUT <= $cf::RUNTIME && !$map->players) { 58 if ($map->last_access + $max_idle <= $cf::RUNTIME && !$map->players) {
59 $cf::WAIT_FOR_TICK_ONE->wait;
60 $map->swap_out; 59 $map->swap_out;
60 $cf::WAIT_FOR_TICK_ONE->wait unless $max_idle == 1;
61 } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) { 61 } elsif ($map->{last_save} + $SAVE_TIMEOUT <= $cf::RUNTIME) {
62 $cf::WAIT_FOR_TICK_ONE->wait;
63 $map->save; 62 $map->save;
63 $cf::WAIT_FOR_TICK_ONE->wait unless $max_idle == 1;
64 } 64 }
65 } 65 }
66 }; 66 };
67 warn $@ if $@; 67 warn $@ if $@;
68 Coro::cede; 68 Coro::cede;

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