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Comparing deliantra/server/lib/cf.pm (file contents):
Revision 1.410 by root, Tue Jan 15 12:02:24 2008 UTC vs.
Revision 1.414 by root, Thu Apr 10 09:10:45 2008 UTC

1#
2# This file is part of Deliantra, the Roguelike Realtime MMORPG.
3#
4# Copyright (©) 2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5#
6# Deliantra is free software: you can redistribute it and/or modify
7# it under the terms of the GNU General Public License as published by
8# the Free Software Foundation, either version 3 of the License, or
9# (at your option) any later version.
10#
11# This program is distributed in the hope that it will be useful,
12# but WITHOUT ANY WARRANTY; without even the implied warranty of
13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14# GNU General Public License for more details.
15#
16# You should have received a copy of the GNU General Public License
17# along with this program. If not, see <http://www.gnu.org/licenses/>.
18#
19# The authors can be reached via e-mail to <support@deliantra.net>
20#
21
1package cf; 22package cf;
2 23
3use utf8; 24use utf8;
4use strict; 25use strict;
5 26
6use Symbol; 27use Symbol;
7use List::Util; 28use List::Util;
8use Socket; 29use Socket;
9use EV 1.86; 30use EV 3.2;
10use Opcode; 31use Opcode;
11use Safe; 32use Safe;
12use Safe::Hole; 33use Safe::Hole;
13use Storable (); 34use Storable ();
14 35
15use Coro 4.32 (); 36use Coro 4.50 ();
16use Coro::State; 37use Coro::State;
17use Coro::Handle; 38use Coro::Handle;
18use Coro::EV; 39use Coro::EV;
19use Coro::Timer; 40use Coro::Timer;
20use Coro::Signal; 41use Coro::Signal;
… …
69our $RANDOMDIR = "$LOCALDIR/random"; 90our $RANDOMDIR = "$LOCALDIR/random";
70our $BDBDIR = "$LOCALDIR/db"; 91our $BDBDIR = "$LOCALDIR/db";
71our %RESOURCE; 92our %RESOURCE;
72 93
73our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!) 94our $TICK = MAX_TIME * 1e-6; # this is a CONSTANT(!)
74our $TICK_WATCHER;
75our $AIO_POLL_WATCHER; 95our $AIO_POLL_WATCHER;
76our $NEXT_RUNTIME_WRITE; # when should the runtime file be written 96our $NEXT_RUNTIME_WRITE; # when should the runtime file be written
77our $NEXT_TICK; 97our $NEXT_TICK;
78our $USE_FSYNC = 1; # use fsync to write maps - default off 98our $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 ∕
97our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons 117our $PATH_SEP = "∕"; # U+2215, chosen purely for visual reasons
98 118
99our $LOAD; # a number between 0 (idle) and 1 (too many objects) 119our $LOAD; # a number between 0 (idle) and 1 (too many objects)
100our $LOADAVG; # same thing, but with alpha-smoothing 120our $LOADAVG; # same thing, but with alpha-smoothing
121our $JITTER; # average jitter
101our $tick_start; # for load detecting purposes 122our $TICK_START; # for load detecting purposes
102 123
103binmode STDOUT; 124binmode STDOUT;
104binmode STDERR; 125binmode 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
343sub freeze_mainloop { 364sub 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;
348 };
349 $TICK_WATCHER->stop;
350 $guard
351} 368}
352 369
353=item cf::periodic $interval, $cb 370=item cf::periodic $interval, $cb
354 371
355Like EV::periodic, but randomly selects a starting point so that the actions 372Like 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
462 # (but this is cancel-safe)
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"
486 if $time > $TICK * 0.5 && $TICK_WATCHER->is_active;
487
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
… …
1316 my $msg = $@ ? "$v->{path}: $@\n" 1328 my $msg = $@ ? "$v->{path}: $@\n"
1317 : "$v->{base}: extension inactive.\n"; 1329 : "$v->{base}: extension inactive.\n";
1318 1330
1319 if (exists $v->{meta}{mandatory}) { 1331 if (exists $v->{meta}{mandatory}) {
1320 warn $msg; 1332 warn $msg;
1321 warn "mandatory extension failed to load, exiting.\n"; 1333 cf::cleanup "mandatory extension failed to load, exiting.";
1322 exit 1;
1323 } 1334 }
1324 1335
1325 warn $msg; 1336 warn $msg;
1326 } 1337 }
1327 1338
… …
3350 3361
3351 reload_config; 3362 reload_config;
3352 db_init; 3363 db_init;
3353 load_extensions; 3364 load_extensions;
3354 3365
3355 $TICK_WATCHER->start;
3356 $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
3367 evthread_start IO::AIO::poll_fileno;
3357 EV::loop; 3368 EV::loop;
3358} 3369}
3359 3370
3360############################################################################# 3371#############################################################################
3361# initialisation and cleanup 3372# initialisation and cleanup
… …
3558 warn "leaving sync_job"; 3569 warn "leaving sync_job";
3559 3570
3560 1 3571 1
3561 } or do { 3572 } or do {
3562 warn $@; 3573 warn $@;
3563 warn "error while reloading, exiting."; 3574 cf::cleanup "error while reloading, exiting.";
3564 exit 1;
3565 }; 3575 };
3566 3576
3567 warn "reloaded"; 3577 warn "reloaded";
3568}; 3578};
3569 3579
… …
3597 3607
3598our @WAIT_FOR_TICK; 3608our @WAIT_FOR_TICK;
3599our @WAIT_FOR_TICK_BEGIN; 3609our @WAIT_FOR_TICK_BEGIN;
3600 3610
3601sub wait_for_tick { 3611sub wait_for_tick {
3602 return unless $TICK_WATCHER->is_active; 3612 return if tick_inhibit;
3603 return if $Coro::current == $Coro::main; 3613 return if $Coro::current == $Coro::main;
3604 3614
3605 my $signal = new Coro::Signal; 3615 my $signal = new Coro::Signal;
3606 push @WAIT_FOR_TICK, $signal; 3616 push @WAIT_FOR_TICK, $signal;
3607 $signal->wait; 3617 $signal->wait;
3608} 3618}
3609 3619
3610sub wait_for_tick_begin { 3620sub wait_for_tick_begin {
3611 return unless $TICK_WATCHER->is_active; 3621 return if tick_inhibit;
3612 return if $Coro::current == $Coro::main; 3622 return if $Coro::current == $Coro::main;
3613 3623
3614 my $signal = new Coro::Signal; 3624 my $signal = new Coro::Signal;
3615 push @WAIT_FOR_TICK_BEGIN, $signal; 3625 push @WAIT_FOR_TICK_BEGIN, $signal;
3616 $signal->wait; 3626 $signal->wait;
3617} 3627}
3618 3628
3619$TICK_WATCHER = EV::periodic_ns 0, $TICK, 0, sub { 3629sub tick {
3620 if ($Coro::current != $Coro::main) { 3630 if ($Coro::current != $Coro::main) {
3621 Carp::cluck "major BUG: server tick called outside of main coro, skipping it" 3631 Carp::cluck "major BUG: server tick called outside of main coro, skipping it"
3622 unless ++$bug_warning > 10; 3632 unless ++$bug_warning > 10;
3623 return; 3633 return;
3624 } 3634 }
3625 3635
3626 $NOW = $tick_start = EV::now;
3627
3628 cf::server_tick; # one server iteration 3636 cf::server_tick; # one server iteration
3629
3630 $RUNTIME += $TICK;
3631 $NEXT_TICK = $_[0]->at;
3632 3637
3633 if ($NOW >= $NEXT_RUNTIME_WRITE) { 3638 if ($NOW >= $NEXT_RUNTIME_WRITE) {
3634 $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.;
3635 Coro::async_pool { 3640 Coro::async_pool {
3636 $Coro::current->{desc} = "runtime saver"; 3641 $Coro::current->{desc} = "runtime saver";
… …
3644 } 3649 }
3645 while (my $sig = shift @WAIT_FOR_TICK) { 3650 while (my $sig = shift @WAIT_FOR_TICK) {
3646 $sig->send; 3651 $sig->send;
3647 } 3652 }
3648 3653
3649 $LOAD = ($NOW - $tick_start) / $TICK; 3654 $LOAD = ($NOW - $TICK_START) / $TICK;
3650 $LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25; 3655 $LOADAVG = $LOADAVG * 0.75 + $LOAD * 0.25;
3651 3656
3652 _post_tick; 3657 if (0) {
3653}; 3658 if ($NEXT_TICK) {
3654$TICK_WATCHER->priority (EV::MAXPRI); 3659 my $jitter = $TICK_START - $NEXT_TICK;
3660 $JITTER = $JITTER * 0.75 + $jitter * 0.25;
3661 warn "jitter $JITTER\n";#d#
3662 }
3663 }
3664}
3655 3665
3656{ 3666{
3657 # configure BDB 3667 # configure BDB
3658 3668
3659 BDB::min_parallel 8; 3669 BDB::min_parallel 8;

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