--- deliantra/Deliantra-Client/DC/DB.pm	2007/07/05 10:15:17	1.8
+++ deliantra/Deliantra-Client/DC/DB.pm	2007/08/06 02:11:45	1.15
@@ -1,6 +1,6 @@
 =head1 NAME
 
-CFPlus::DB - async. database access for cfplus
+CFPlus::DB - async. database and filesystem access for cfplus
 
 =head1 SYNOPSIS
 
@@ -18,17 +18,29 @@
 use utf8;
 
 use Carp ();
-use AnyEvent ();
 use Storable ();
+use Config;
+use Event ();
 
 use CFPlus;
 
+our $DB_HOME = "$Crossfire::VARDIR/cfplus-$BerkeleyDB::db_version-$Config{archname}";
+
+sub path_of_res($) {
+   utf8::downgrade $_[0]; # bug in unpack "H*"
+   "$DB_HOME/res-data-" . unpack "H*", $_[0]
+}
+
 sub sync {
    # for debugging
    #CFPlus::DB::Server::req (sync => sub { });
    CFPlus::DB::Server::sync ();
 }
 
+sub exists($$$) {
+   CFPlus::DB::Server::req (exists => @_);
+}
+
 sub get($$$) {
    CFPlus::DB::Server::req (get => @_);
 }
@@ -37,6 +49,22 @@
    CFPlus::DB::Server::req (put => @_);
 }
 
+sub unlink($$) {
+   CFPlus::DB::Server::req (unlink => @_);
+}
+
+sub write_file($$$) {
+   CFPlus::DB::Server::req (write_file => @_);
+}
+
+sub prefetch_file($$$) {
+   CFPlus::DB::Server::req (prefetch_file => @_);
+}
+
+sub logprint($$$) {
+   CFPlus::DB::Server::req (logprint => @_);
+}
+
 our $tilemap;
 
 sub get_tile_id_sync($) {
@@ -62,9 +90,7 @@
 
 use Fcntl;
 use BerkeleyDB;
-use Config;
 
-our $DB_HOME = "$Crossfire::VARDIR/cfplus-$BerkeleyDB::db_version-$Config{archname}";
 our $DB_ENV;
 our $DB_STATE;
 our %DB_TABLE;
@@ -105,8 +131,6 @@
    }
 }
 
-our $SYNC_INTERVAL = 60;
-
 our %CB;
 our $FH;
 our $ID = "aaa0";
@@ -115,12 +139,17 @@
 our $write_buf;
 our $read_buf;
 
+our $SYNC = Event->idle (min => 5, max => 60, parked => 1, cb => sub {
+   CFPlus::DB::Server::req (sync => sub { });
+   $_[0]->w->stop;
+});
+
 sub fh_write {
    my $len = syswrite $FH, $write_buf;
 
    substr $write_buf, 0, $len, "";
 
-   undef $fh_w_watcher
+   $fh_w_watcher->stop
       unless length $write_buf;
 }
 
@@ -166,12 +195,8 @@
    $write_buf .= pack "N/a*", Storable::freeze [$id, $type, @args];
    $CB{$id} = $cb;
 
-   $fh_w_watcher = AnyEvent->io (fh => $FH, poll => 'w', cb => \&fh_write);
-}
-
-sub sync_tick {
-   req "sync", sub { };
-   $sync_timer = AnyEvent->timer (after => $SYNC_INTERVAL, cb => \&sync_tick);
+   $fh_w_watcher->start;
+   $SYNC->start;
 }
 
 sub do_sync {
@@ -179,6 +204,16 @@
    ()
 }
 
+sub do_exists {
+   my ($db, $key) = @_;
+
+   utf8::downgrade $key;
+   my $data;
+   (table $db)->db_get ($key, $data) == 0
+      ? length $data
+      : ()
+}
+
 sub do_get {
    my ($db, $key) = @_;
 
@@ -237,6 +272,56 @@
    die "maximum number of transaction retries reached - database problems?";
 }
 
+sub do_unlink {
+   unlink $_[0];
+}
+
+sub do_write_file {
+   my ($file, $data) = @_;
+
+   utf8::downgrade $file;
+   utf8::downgrade $data;
+   open my $fh, ">:raw", $file
+      or return;
+   print $fh $data;
+   close $fh;
+
+   1
+}
+
+sub do_prefetch_file {
+   my ($file, $size) = @_;
+
+   utf8::downgrade $file;
+   open my $fh, "<:raw", $file
+      or return;
+   sysread $fh, my $buf, $size;
+
+   1
+}
+
+our %LOG_FH;
+
+sub do_logprint {
+   my ($path, $line) = @_;
+
+   $LOG_FH{$path} ||= do {
+      open my $fh, ">>:utf8", $path
+         or warn "Couldn't open logfile $path: $!";
+
+      $fh->autoflush (1);
+
+      $fh
+   };
+
+   my ($sec, $min, $hour, $mday, $mon, $year) = localtime time;
+
+   my $ts = sprintf "%04d-%02d-%02d %02d:%02d:%02d",
+               $year + 1900, $mon + 1, $mday, $hour, $min, $sec;
+
+   print { $LOG_FH{$path} } "$ts $line\n"
+}
+
 sub run {
    ($FH, my $fh) = CFPlus::socketpipe;
 
@@ -246,7 +331,9 @@
    my $pid = fork;
    
    if (defined $pid && !$pid) {
+      local $SIG{QUIT};
       local $SIG{__DIE__};
+      local $SIG{__WARN__};
       eval {
          close $FH;
 
@@ -290,9 +377,9 @@
 
    $CB{die} = sub { die shift };
 
-   $fh_r_watcher = AnyEvent->io (fh => $FH, poll => 'r', cb => \&fh_read);
-
-   sync_tick;
+   $fh_r_watcher = Event->io (fd => $FH, poll => 'r', nice => 1, cb => \&fh_read);
+   $fh_w_watcher = Event->io (fd => $FH, poll => 'w', nice => -1, parked => 1, cb => \&fh_write);
+   $SYNC->start;
 }
 
 sub stop {