X-Git-Url: http://dxcluster.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=perl%2FMsg.pm;h=e167269363d6f674ac24a016ce2fbabea51a7c0b;hb=e9a4c82122720cd66da440e4ff6f88aaded8e146;hp=449f1790ca8dcb1b0156e06c31d402784264320a;hpb=586cbb347e7639f5575b48572e75140501a109c0;p=spider.git

diff --git a/perl/Msg.pm b/perl/Msg.pm
index 449f1790..e1672693 100644
--- a/perl/Msg.pm
+++ b/perl/Msg.pm
@@ -15,8 +15,6 @@ use IO::Select;
 use IO::Socket;
 use DXDebug;
 use Timer;
-use Errno qw(EWOULDBLOCK EAGAIN EINPROGRESS);
-use POSIX qw(F_GETFL F_SETFL O_NONBLOCK);
 
 use vars qw(%rd_callbacks %wt_callbacks %er_callbacks $rd_handles $wt_handles $er_handles $now %conns $noconns);
 
@@ -28,6 +26,27 @@ $wt_handles   = IO::Select->new();
 $er_handles   = IO::Select->new();
 
 $now = time;
+my $blocking_supported = 0;
+
+BEGIN {
+    # Checks if blocking is supported
+    eval {
+        require POSIX; POSIX->import(qw (F_SETFL F_GETFL O_NONBLOCK));
+    };
+    $blocking_supported = 1 unless $@;
+
+	# import as many of these errno values as are available
+	eval {
+		require Errno; Errno->import(qw(EAGAIN EINPROGRESS EWOULDBLOCK));
+	};
+}
+
+my $w = $^W;
+$^W = 0;
+my $eagain = eval {EAGAIN()};
+my $einprogress = eval {EINPROGRESS()};
+my $ewouldblock = eval {EWOULDBLOCK()};
+$^W = $w;
 
 #
 #-----------------------------------------------------------------
@@ -47,6 +66,7 @@ sub new
 		lineend => "\r\n",
 		csort => 'telnet',
 		timeval => 60,
+		blocking => 0,
     };
 
 	$noconns++;
@@ -62,8 +82,17 @@ sub set_error
 	set_event_handler($conn->{sock}, error => $callback) if exists $conn->{sock};
 }
 
+sub set_rproc
+{
+	my $conn = shift;
+	my $callback = shift;
+	$conn->{rproc} = $callback;
+}
+
 sub blocking
 {
+	return unless $blocking_supported;
+	
 	my $flags = fcntl ($_[0], F_GETFL, 0);
 	if ($_[1]) {
 		$flags &= ~O_NONBLOCK;
@@ -126,18 +155,21 @@ sub connect {
 	my $proto = getprotobyname('tcp');
 	$sock->socket(AF_INET, SOCK_STREAM, $proto) or return undef;
 	
-	blocking($sock, 0);
-	my $ip = gethostbyname($to_host);
-	my $r = $sock->connect($to_port, $ip);
-	unless ($r) {
-		return undef unless $! == EINPROGRESS;
+	if ($conn->{blocking}) {
+		blocking($sock, 0);
+		$conn->{blocking} = 0;
 	}
+
+	my $ip = gethostbyname($to_host);
+#	my $r = $sock->connect($to_port, $ip);
+	my $r = connect($sock, pack_sockaddr_in($to_port, $ip));
+	return undef unless $r || _err_will_block($!);
 	
 	$conn->{sock} = $sock;
     
     if ($conn->{rproc}) {
-        my $callback = sub {_rcv($conn)};
-        set_event_handler ($sock, "read" => $callback);
+        my $callback = sub {$conn->_rcv};
+        set_event_handler ($sock, read => $callback);
     }
     return $conn;
 }
@@ -149,9 +181,6 @@ sub disconnect {
 	$conn->{disconnecting} = 1;
     my $sock = delete $conn->{sock};
 	$conn->{state} = 'E';
-	delete $conn->{cmd};
-	delete $conn->{eproc};
-	delete $conn->{rproc};
 	$conn->{timeout}->del if $conn->{timeout};
 
 	# be careful to delete the correct one
@@ -163,11 +192,19 @@ sub disconnect {
 	$call ||= 'unallocated';
 	dbg('connll', "Connection $call disconnected");
 	
-    set_event_handler ($sock, read => undef, write => undef, error => undef);
 	unless ($^O =~ /^MS/i) {
 		kill 'TERM', $conn->{pid} if exists $conn->{pid};
 	}
+
+	# get rid of any references
+	for (keys %$conn) {
+		if (ref($conn->{$_})) {
+			delete $conn->{$_};
+		}
+	}
+
 	return unless defined($sock);
+    set_event_handler ($sock, read => undef, write => undef, error => undef);
     shutdown($sock, 3);
 	close($sock);
 }
@@ -183,7 +220,7 @@ sub send_later {
     $conn->enqueue($msg);
     my $sock = $conn->{sock};
     return unless defined($sock);
-    set_event_handler ($sock, "write" => sub {$conn->_send(0)});
+    set_event_handler ($sock, write => sub {$conn->_send(0)});
 }
 
 sub enqueue {
@@ -203,7 +240,10 @@ sub _send {
     # return to the event loop only after every message, or if it
     # is likely to block in the middle of a message.
 
-	blocking($sock, $flush);
+	if ($conn->{blocking} != $flush) {
+		blocking($sock, $flush);
+		$conn->{blocking} = $flush;
+	}
     my $offset = (exists $conn->{send_offset}) ? $conn->{send_offset} : 0;
 
     while (@$rq) {
@@ -240,9 +280,9 @@ sub _send {
     }
     # Call me back if queue has not been drained.
     if (@$rq) {
-        set_event_handler ($sock, "write" => sub {$conn->_send(0)});
+        set_event_handler ($sock, write => sub {$conn->_send(0)});
     } else {
-        set_event_handler ($sock, "write" => undef);
+        set_event_handler ($sock, write => undef);
 		if (exists $conn->{close_on_empty}) {
 			&{$conn->{eproc}}($conn, undef) if exists $conn->{eproc};
 			$conn->disconnect; 
@@ -251,8 +291,25 @@ sub _send {
     1;  # Success
 }
 
+sub dup_sock
+{
+	my $conn = shift;
+	my $oldsock = $conn->{sock};
+	my $rc = $rd_callbacks{$oldsock};
+	my $wc = $wt_callbacks{$oldsock};
+	my $ec = $er_callbacks{$oldsock};
+	my $sock = $oldsock->new_from_fd($oldsock, "w+");
+	if ($sock) {
+		set_event_handler($oldsock, read=>undef, write=>undef, error=>undef);
+		$conn->{sock} = $sock;
+		set_event_handler($sock, read=>$rc, write=>$wc, error=>$ec);
+		$oldsock->close;
+	}
+}
+
 sub _err_will_block {
-	return ($_[0] == EAGAIN || $_[0] == EWOULDBLOCK || $_[0] == EINPROGRESS);
+	return 0 unless $blocking_supported;
+	return ($_[0] == $eagain || $_[0] == $ewouldblock || $_[0] == $einprogress);
 }
 
 sub close_on_empty
@@ -276,7 +333,7 @@ sub new_server {
                                           Proto     => 'tcp',
                                           Reuse     => 1);
     die "Could not create socket: $! \n" unless $self->{sock};
-    set_event_handler ($self->{sock}, "read" => sub { $self->new_client }  );
+    set_event_handler ($self->{sock}, read => sub { $self->new_client }  );
 	return $self;
 }
 
@@ -305,7 +362,10 @@ sub _rcv {                     # Complement to _send
     return unless defined($sock);
 
 	my @lines;
-	blocking($sock, 0);
+	if ($conn->{blocking}) {
+		blocking($sock, 0);
+		$conn->{blocking} = 0;
+	}
 	$bytes_read = sysread ($sock, $msg, 1024, 0);
 	if (defined ($bytes_read)) {
 		if ($bytes_read > 0) {
@@ -321,8 +381,8 @@ sub _rcv {                     # Complement to _send
 
 FINISH:
     if (defined $bytes_read && $bytes_read == 0) {
-		&{$conn->{eproc}}($conn, undef) if exists $conn->{eproc};
-		$conn->disconnect();
+		&{$conn->{eproc}}($conn, $!) if exists $conn->{eproc};
+		$conn->disconnect;
     } else {
 		$conn->dequeue if exists $conn->{msg};
 	}
@@ -337,12 +397,12 @@ sub new_client {
 	$conn->{sort} = 'Incoming';
 	if ($eproc) {
 		$conn->{eproc} = $eproc;
-        set_event_handler ($sock, "error" => $eproc);
+        set_event_handler ($sock, error => $eproc);
 	}
     if ($rproc) {
         $conn->{rproc} = $rproc;
-        my $callback = sub {_rcv($conn)};
-        set_event_handler ($sock, "read" => $callback);
+        my $callback = sub {$conn->_rcv};
+        set_event_handler ($sock, read => $callback);
     } else {  # Login failed
 		&{$conn->{eproc}}($conn, undef) if exists $conn->{eproc};
         $conn->disconnect();
@@ -352,7 +412,7 @@ sub new_client {
 sub close_server
 {
 	my $conn = shift;
-	set_event_handler ($conn->{sock}, "read" => undef);
+	set_event_handler ($conn->{sock}, read => undef, write => undef, error => undef );
 	$conn->{sock}->close;
 }
 
@@ -364,6 +424,7 @@ sub close_all_clients
 	}
 }
 
+#
 #----------------------------------------------------
 # Event loop routines used by both client and server
 
@@ -412,7 +473,6 @@ sub event_loop {
         last unless ($rd_handles->count() || $wt_handles->count());
         
 		($rset, $wset) = IO::Select->select($rd_handles, $wt_handles, $er_handles, $timeout);
-		$now = time;
 		
         foreach $e (@$eset) {
             &{$er_callbacks{$e}}($e) if exists $er_callbacks{$e};
@@ -432,6 +492,15 @@ sub event_loop {
     }
 }
 
+sub sleep
+{
+	my ($pkg, $interval) = @_;
+	my $now = time;
+	while (time - $now < $interval) {
+		$pkg->event_loop(10, 0.01);
+	}
+}
+
 sub DESTROY
 {
 	my $conn = shift;