From: Matt S Trout <mst@shadowcat.co.uk>
Date: Thu, 17 May 2012 23:15:36 +0000 (+0000)
Subject: parti8al conversion to future based system; start still being weird
X-Git-Tag: v0.001001~57
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=scpubgit%2FObject-Remote.git;a=commitdiff_plain;h=dc28afe80b27f0eb81eef66e6ba554a7c1fb6e41

parti8al conversion to future based system; start still being weird
---

diff --git a/bin/object-remote-node b/bin/object-remote-node
index 807f834..acdf165 100755
--- a/bin/object-remote-node
+++ b/bin/object-remote-node
@@ -3,6 +3,7 @@
 use strictures 1;
 use Object::Remote::Connector::STDIO;
 use Object::Remote;
+use CPS::Future;
 
 #$Object::Remote::Connection::DEBUG = 1;
 
@@ -10,7 +11,11 @@ my $c = Object::Remote::Connector::STDIO->new->connect;
 
 my $loop = Object::Remote->current_loop;
 
-$c->on_close(sub { $loop->stop });
+my $f = CPS::Future->new;
+
+$f->on_ready(sub { $loop->stop });
+
+$c->on_close($f);
 
 print { $c->send_to_fh } "Shere\n";
 
diff --git a/lib/Object/Remote.pm b/lib/Object/Remote.pm
index 64355af..25f0349 100644
--- a/lib/Object/Remote.pm
+++ b/lib/Object/Remote.pm
@@ -3,6 +3,7 @@ package Object::Remote;
 use Object::Remote::MiniLoop;
 use Object::Remote::Proxy;
 use Scalar::Util qw(weaken blessed);
+use Object::Remote::Future;
 use Module::Runtime qw(use_module);
 use Moo;
 
@@ -40,7 +41,7 @@ sub BUILD {
     die "No id supplied and no class either" unless $args->{class};
     ref($_) eq 'HASH' and $_ = [ %$_ ] for $args->{args};
     $self->_set_id(
-      $self->_await(
+      await_future(
         $self->connection->send(
           class_call => $args->{class}, 0,
           $args->{constructor}||'new', @{$args->{args}||[]}
@@ -57,9 +58,10 @@ sub current_loop {
 
 sub call {
   my ($self, $method, @args) = @_;
-  $self->_await(
-    $self->connection->send(call => $self->id, wantarray, $method, @args)
-  );
+  my $w = wantarray;
+  future {
+    $self->connection->send(call => $self->id, $w, $method, @args)
+  };
 }
 
 sub call_discard {
@@ -73,14 +75,6 @@ sub call_discard_free {
   $self->connection->send_discard(call_free => $self->id, $method, @args);
 }
 
-sub _await {
-  my ($self, $future) = @_;
-  my $loop = $self->current_loop;
-  $future->on_ready(sub { $loop->stop });
-  $loop->run;
-  wantarray ? $future->get : ($future->get)[0];
-}
-
 sub DEMOLISH {
   my ($self, $gd) = @_;
   return if $gd or $self->disarmed_free;
diff --git a/lib/Object/Remote/Connection.pm b/lib/Object/Remote/Connection.pm
index 4e3348a..3b66cd5 100644
--- a/lib/Object/Remote/Connection.pm
+++ b/lib/Object/Remote/Connection.pm
@@ -1,6 +1,6 @@
 package Object::Remote::Connection;
 
-use CPS::Future;
+use Object::Remote::Future;
 use Object::Remote::Null;
 use Object::Remote;
 use IO::Handle;
@@ -156,7 +156,7 @@ sub _receive_data_from {
       $self->_receive($1);
     }
   } else {
-    $self->on_close->();
+    $self->on_close->done();
   }
 }
 
@@ -201,6 +201,12 @@ sub receive_class_call {
 
 sub _invoke {
   my ($self, $future, $local, $ctx, $method, @args) = @_;
+  if ($method =~ /^start::/) {
+    my $f = $local->$method(@args);
+    $f->on_done(sub { undef($f); $future->done(@_) });
+    $f->on_fail(sub { undef($f); $future->fail(@_) });
+    return;
+  }
   my $do = sub { $local->$method(@args) };
   eval {
     $future->done(
diff --git a/lib/Object/Remote/Future.pm b/lib/Object/Remote/Future.pm
new file mode 100644
index 0000000..2fe171b
--- /dev/null
+++ b/lib/Object/Remote/Future.pm
@@ -0,0 +1,60 @@
+package Object::Remote::Future;
+
+use strict;
+use warnings;
+use base qw(Exporter);
+
+use CPS::Future;
+
+our @EXPORT = qw(future await_future);
+
+sub future (&) {
+  my $f = $_[0]->(CPS::Future->new);
+  return $f if ((caller(1)||'') eq 'start');
+  await_future($f);
+}
+
+sub await_future {
+  my $f = shift;
+  return $f if $f->is_ready;
+  require Object::Remote;
+  my $loop = Object::Remote->current_loop;
+  $f->on_ready(sub { $loop->stop });
+  $loop->run;
+  return wantarray ? $f->get : ($f->get)[0];
+}
+
+package start;
+
+sub AUTOLOAD {
+  my $invocant = shift;
+  my ($method) = our $AUTOLOAD =~ /([^:]+)$/;
+  if (ref($invocant) eq 'ARRAY') {
+    return [ map $_->${\"start::${method}"}, @$invocant ];
+  }
+  my $res;
+  unless (eval { $res = $invocant->$method(@_); 1 }) {
+    my $f = CPS::Future->new;
+    $f->fail($@);
+    return $f;
+  }
+  unless (Scalar::Util::blessed($res) and $res->isa('CPS::Future')) {
+    my $f = CPS::Future->new;
+    $f->done($res);
+    return $f;
+  }
+  return $res;
+}
+
+package await;
+
+sub AUTOLOAD {
+  my $invocant = shift;
+  my ($method) = our $AUTOLOAD =~ /([^:]+)$/;
+  my @invocants = (ref($invocant) eq 'ARRAY' ? @$invocant : $invocant);
+  my @futures = map $_->${\"start::${method}"}, @$invocant;
+  Object::Remote::Future::await_future(CPS::Future->needs_all(@futures));
+  return map $_->get, @futures;
+}
+
+1;
diff --git a/lib/Object/Remote/Proxy.pm b/lib/Object/Remote/Proxy.pm
index 8541056..af6a902 100644
--- a/lib/Object/Remote/Proxy.pm
+++ b/lib/Object/Remote/Proxy.pm
@@ -5,6 +5,9 @@ use strictures 1;
 sub AUTOLOAD {
   my $self = shift;
   (my $method) = (our $AUTOLOAD =~ /([^:]+)$/);
+  if ((caller(0)||'') eq 'start') {
+    $method = "start::${method}";
+  }
   $self->{remote}->${\$self->{method}}($method => @_);
 }