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1 | # |
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2 | # This file is part of Deliantra, the Roguelike Realtime MMORPG. |
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3 | # |
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4 | # Copyright (©) 2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
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5 | # |
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6 | # Deliantra is free software: you can redistribute it and/or modify |
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7 | # it under the terms of the GNU General Public License as published by |
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8 | # the Free Software Foundation, either version 3 of the License, or |
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9 | # (at your option) any later version. |
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10 | # |
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11 | # This program is distributed in the hope that it will be useful, |
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12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | # GNU General Public License for more details. |
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15 | # |
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16 | # You should have received a copy of the GNU General Public License |
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17 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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18 | # |
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19 | # The authors can be reached via e-mail to <support@deliantra.net> |
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20 | # |
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21 | |
1 | package cf; |
22 | package cf; |
2 | |
23 | |
3 | use utf8; |
24 | use utf8; |
4 | use strict; |
25 | use strict; |
5 | |
26 | |
… | |
… | |
69 | our $RANDOMDIR = "$LOCALDIR/random"; |
90 | our $RANDOMDIR = "$LOCALDIR/random"; |
70 | our $BDBDIR = "$LOCALDIR/db"; |
91 | our $BDBDIR = "$LOCALDIR/db"; |
71 | our %RESOURCE; |
92 | our %RESOURCE; |
72 | |
93 | |
73 | our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!) |
94 | our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!) |
74 | our $TICK_WATCHER; |
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75 | our $AIO_POLL_WATCHER; |
95 | our $AIO_POLL_WATCHER; |
76 | our $NEXT_RUNTIME_WRITE; # when should the runtime file be written |
96 | our $NEXT_RUNTIME_WRITE; # when should the runtime file be written |
77 | our $NEXT_TICK; |
97 | our $NEXT_TICK; |
78 | our $USE_FSYNC = 1; # use fsync to write maps - default off |
98 | our $USE_FSYNC = 1; # use fsync to write maps - default off |
79 | |
99 | |
… | |
… | |
96 | # used to convert map paths into valid unix filenames by replacing / by ∕ |
116 | # used to convert map paths into valid unix filenames by replacing / by ∕ |
97 | our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons |
117 | our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons |
98 | |
118 | |
99 | our $LOAD; # a number between 0 (idle) and 1 (too many objects) |
119 | our $LOAD; # a number between 0 (idle) and 1 (too many objects) |
100 | our $LOADAVG; # same thing, but with alpha-smoothing |
120 | our $LOADAVG; # same thing, but with alpha-smoothing |
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121 | our $JITTER; # average jitter |
101 | our $tick_start; # for load detecting purposes |
122 | our $TICK_START; # for load detecting purposes |
102 | |
123 | |
103 | binmode STDOUT; |
124 | binmode STDOUT; |
104 | binmode STDERR; |
125 | binmode STDERR; |
105 | |
126 | |
106 | # read virtual server time, if available |
127 | # read virtual server time, if available |
… | |
… | |
339 | |
360 | |
340 | ! ! $LOCK{$key} |
361 | ! ! $LOCK{$key} |
341 | } |
362 | } |
342 | |
363 | |
343 | sub freeze_mainloop { |
364 | sub freeze_mainloop { |
344 | return unless $TICK_WATCHER->is_active; |
365 | tick_inhibit_inc; |
345 | |
366 | |
346 | my $guard = Coro::guard { |
367 | Coro::guard \&tick_inhibit_dec; |
347 | $TICK_WATCHER->start; |
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348 | }; |
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349 | $TICK_WATCHER->stop; |
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350 | $guard |
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351 | } |
368 | } |
352 | |
369 | |
353 | =item cf::periodic $interval, $cb |
370 | =item cf::periodic $interval, $cb |
354 | |
371 | |
355 | Like EV::periodic, but randomly selects a starting point so that the actions |
372 | Like EV::periodic, but randomly selects a starting point so that the actions |
… | |
… | |
456 | # this is the main coro, too bad, we have to block |
473 | # this is the main coro, too bad, we have to block |
457 | # till the operation succeeds, freezing the server :/ |
474 | # till the operation succeeds, freezing the server :/ |
458 | |
475 | |
459 | LOG llevError, Carp::longmess "sync job";#d# |
476 | LOG llevError, Carp::longmess "sync job";#d# |
460 | |
477 | |
461 | # TODO: use suspend/resume instead |
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462 | # (but this is cancel-safe) |
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463 | my $freeze_guard = freeze_mainloop; |
478 | my $freeze_guard = freeze_mainloop; |
464 | |
479 | |
465 | my $busy = 1; |
480 | my $busy = 1; |
466 | my @res; |
481 | my @res; |
467 | |
482 | |
… | |
… | |
478 | } else { |
493 | } else { |
479 | EV::loop EV::LOOP_ONESHOT; |
494 | EV::loop EV::LOOP_ONESHOT; |
480 | } |
495 | } |
481 | } |
496 | } |
482 | |
497 | |
483 | $time = EV::time - $time; |
498 | my $time = EV::time - $time; |
484 | |
499 | |
485 | LOG llevError | logBacktrace, Carp::longmess "long sync job" |
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486 | if $time > $TICK * 0.5 && $TICK_WATCHER->is_active; |
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487 | |
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488 | $tick_start += $time; # do not account sync jobs to server load |
500 | $TICK_START += $time; # do not account sync jobs to server load |
489 | |
501 | |
490 | wantarray ? @res : $res[0] |
502 | wantarray ? @res : $res[0] |
491 | } else { |
503 | } else { |
492 | # we are in another coroutine, how wonderful, everything just works |
504 | # we are in another coroutine, how wonderful, everything just works |
493 | |
505 | |
… | |
… | |
3349 | |
3361 | |
3350 | reload_config; |
3362 | reload_config; |
3351 | db_init; |
3363 | db_init; |
3352 | load_extensions; |
3364 | load_extensions; |
3353 | |
3365 | |
3354 | $TICK_WATCHER->start; |
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3355 | $Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority |
3366 | $Coro::current->prio (Coro::PRIO_MAX); # give the main loop max. priority |
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3367 | evthread_start; |
3356 | EV::loop; |
3368 | EV::loop; |
3357 | } |
3369 | } |
3358 | |
3370 | |
3359 | ############################################################################# |
3371 | ############################################################################# |
3360 | # initialisation and cleanup |
3372 | # initialisation and cleanup |
… | |
… | |
3595 | |
3607 | |
3596 | our @WAIT_FOR_TICK; |
3608 | our @WAIT_FOR_TICK; |
3597 | our @WAIT_FOR_TICK_BEGIN; |
3609 | our @WAIT_FOR_TICK_BEGIN; |
3598 | |
3610 | |
3599 | sub wait_for_tick { |
3611 | sub wait_for_tick { |
3600 | return unless $TICK_WATCHER->is_active; |
3612 | return if tick_inhibit; |
3601 | return if $Coro::current == $Coro::main; |
3613 | return if $Coro::current == $Coro::main; |
3602 | |
3614 | |
3603 | my $signal = new Coro::Signal; |
3615 | my $signal = new Coro::Signal; |
3604 | push @WAIT_FOR_TICK, $signal; |
3616 | push @WAIT_FOR_TICK, $signal; |
3605 | $signal->wait; |
3617 | $signal->wait; |
3606 | } |
3618 | } |
3607 | |
3619 | |
3608 | sub wait_for_tick_begin { |
3620 | sub wait_for_tick_begin { |
3609 | return unless $TICK_WATCHER->is_active; |
3621 | return if tick_inhibit; |
3610 | return if $Coro::current == $Coro::main; |
3622 | return if $Coro::current == $Coro::main; |
3611 | |
3623 | |
3612 | my $signal = new Coro::Signal; |
3624 | my $signal = new Coro::Signal; |
3613 | push @WAIT_FOR_TICK_BEGIN, $signal; |
3625 | push @WAIT_FOR_TICK_BEGIN, $signal; |
3614 | $signal->wait; |
3626 | $signal->wait; |
3615 | } |
3627 | } |
3616 | |
3628 | |
3617 | $TICK_WATCHER = EV::periodic_ns 0, $TICK, 0, sub { |
3629 | sub tick { |
3618 | if ($Coro::current != $Coro::main) { |
3630 | if ($Coro::current != $Coro::main) { |
3619 | Carp::cluck "major BUG: server tick called outside of main coro, skipping it" |
3631 | Carp::cluck "major BUG: server tick called outside of main coro, skipping it" |
3620 | unless ++$bug_warning > 10; |
3632 | unless ++$bug_warning > 10; |
3621 | return; |
3633 | return; |
3622 | } |
3634 | } |
3623 | |
3635 | |
3624 | $NOW = $tick_start = EV::now; |
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3625 | |
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3626 | cf::server_tick; # one server iteration |
3636 | cf::server_tick; # one server iteration |
3627 | |
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3628 | $RUNTIME += $TICK; |
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3629 | $NEXT_TICK = $_[0]->at; |
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3630 | |
3637 | |
3631 | if ($NOW >= $NEXT_RUNTIME_WRITE) { |
3638 | if ($NOW >= $NEXT_RUNTIME_WRITE) { |
3632 | $NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.; |
3639 | $NEXT_RUNTIME_WRITE = List::Util::max $NEXT_RUNTIME_WRITE + 10, $NOW + 5.; |
3633 | Coro::async_pool { |
3640 | Coro::async_pool { |
3634 | $Coro::current->{desc} = "runtime saver"; |
3641 | $Coro::current->{desc} = "runtime saver"; |
… | |
… | |
3642 | } |
3649 | } |
3643 | while (my $sig = shift @WAIT_FOR_TICK) { |
3650 | while (my $sig = shift @WAIT_FOR_TICK) { |
3644 | $sig->send; |
3651 | $sig->send; |
3645 | } |
3652 | } |
3646 | |
3653 | |
3647 | $LOAD = ($NOW - $tick_start) / $TICK; |
3654 | $LOAD = ($NOW - $TICK_START) / $TICK; |
3648 | $LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25; |
3655 | $LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25; |
3649 | |
3656 | |
3650 | _post_tick; |
3657 | if (0) { |
3651 | }; |
3658 | if ($NEXT_TICK) { |
3652 | $TICK_WATCHER->priority (EV::MAXPRI); |
3659 | my $jitter = $TICK_START - $NEXT_TICK; |
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3660 | $JITTER = $JITTER * 0.75 + $jitter * 0.25; |
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3661 | warn "jitter $JITTER\n";#d# |
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3662 | } |
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3663 | } |
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3664 | } |
3653 | |
3665 | |
3654 | { |
3666 | { |
3655 | # configure BDB |
3667 | # configure BDB |
3656 | |
3668 | |
3657 | BDB::min_parallel 8; |
3669 | BDB::min_parallel 8; |