handle checkpoint.

ext/v8/v8.cpp

@@ -1,3 +1,4 @@
+#include "v8_handle.h"
 #include "v8_cxt.h"
 #include "v8_value.h"
 #include "v8_str.h"
@@ -19,27 +20,28 @@
 #include <stdio.h>
 
 extern "C" {
-    void Init_v8();
+  void Init_v8();
 }
 
 extern "C" {
-    void Init_v8() {
-        rr_init_cxt();
-        rr_init_value();
-        rr_init_str();
-        rr_init_script();
-        rr_init_template();
-        rr_init_obj();
-        rr_init_func();
-        rr_init_v8_array();
-        rr_init_v8_date();
-        rr_init_msg();
-        rr_init_v8_try_catch();
-        rr_init_v8_callbacks();
-        rr_init_v8_external();
-        rr_init_v8_exception();
-        rr_init_v8_locker();
-        rr_init_v8_debug();
-        rr_init_v8_v8();
-    }
+  void Init_v8() {
+    rr_init_handle();
+    rr_init_cxt();
+    rr_init_value();
+    rr_init_str();
+    rr_init_script();
+    rr_init_template();
+    rr_init_obj();
+    rr_init_func();
+    rr_init_v8_array();
+    rr_init_v8_date();
+    rr_init_msg();
+    rr_init_v8_try_catch();
+    rr_init_v8_callbacks();
+    rr_init_v8_external();
+    rr_init_v8_exception();
+    rr_init_v8_locker();
+    rr_init_v8_debug();
+    rr_init_v8_v8();
+  }
 }

ext/v8/v8_external.cpp

@@ -27,10 +27,8 @@ namespace {
     return (VALUE)V8_Ref_Get<External>(self)->Value();
   }
   void GCWeakReferenceCallback(Persistent<Value> object, void* parameter) {
-    // printf("V8 GC!!!!\n");
     Local<External> external(External::Cast(*object));
     rb_hash_delete(references, rb_obj_id((VALUE)external->Value()));
-    // V8::AdjustAmountOfExternalAllocatedMemory(-100000000);
   }
 }
 
@@ -51,7 +49,6 @@ Handle<Value> rr_v8_external_create(VALUE value) {
   rb_hash_aset(references, rb_obj_id(value), value);
   Local<Value> external(External::New((void *)value));
   Persistent<Value> record = Persistent<Value>::New(external);
-  // V8::AdjustAmountOfExternalAllocatedMemory(100000000);
   record.MakeWeak(NULL, GCWeakReferenceCallback);
   return external;
 }

ext/v8/v8_handle.cpp

@@ -0,0 +1,60 @@
+
+#include "rr.h"
+#include "v8_ref.h"
+
+using namespace v8;
+
+namespace {
+
+  VALUE New(VALUE self, VALUE handle) {
+    return rr_v8_ref_create(self, rr_v8_handle(handle));
+  }
+
+  VALUE IsEmpty(VALUE self) {
+    return rr_v82rb(rr_v8_handle(self).IsEmpty());
+  }
+
+  VALUE Clear(VALUE self) {
+    rr_v8_handle(self).Clear();
+    return Qnil;
+  }
+
+  VALUE Dispose(VALUE self) {
+    rr_v8_handle(self).Dispose();
+    return Qnil;
+  }
+
+  void NoopWeakReferenceCallback(Persistent<Value> object, void* parameter) {}
+
+  VALUE MakeWeak(VALUE self) {
+    rr_v8_handle(self).MakeWeak(0, NoopWeakReferenceCallback);
+    return Qnil;
+  }
+
+  VALUE ClearWeak(VALUE self) {
+    rr_v8_handle(self).ClearWeak();
+    return Qnil;
+  }
+
+  VALUE IsNearDeath(VALUE self) {
+    return rr_v82rb(rr_v8_handle(self).IsNearDeath());
+  }
+
+  VALUE IsWeak(VALUE self) {
+    return rr_v82rb(rr_v8_handle(self).IsWeak());
+  }
+
+}
+
+void rr_init_handle() {
+  VALUE HandleClass = rr_define_class("Handle");
+  rr_define_singleton_method(HandleClass, "New", New, 1);
+  rr_define_method(HandleClass, "IsEmpty", IsEmpty, 0);
+  rr_define_method(HandleClass, "Clear", Clear, 0);
+  rr_define_method(HandleClass, "Dispose", Dispose, 0);
+  rr_define_method(HandleClass, "MakeWeak", MakeWeak, 0);
+  rr_define_method(HandleClass, "ClearWeak", ClearWeak, 0);
+  rr_define_method(HandleClass, "IsNearDeath", IsNearDeath, 0);
+  rr_define_method(HandleClass, "IsWeak", IsWeak, 0);
+}
+

ext/v8/v8_handle.h

@@ -0,0 +1,8 @@
+#ifndef _RR_V8_HANDLE_
+#define _RR_V8_HANDLE_ 
+
+void rr_init_handle();
+VALUE rr_v8_handle_new(v8::Local<void>& handle);
+VALUE rr_v8_handle_new(v8::Persistent<void>& handle);
+
+#endif

spec/ext/mem_spec.rb

@@ -4,37 +4,56 @@ require 'weakref'
 
 describe "Memory Usage" do
 
-  context "for low level C interface" do
-    it "does not leak a context" do
-      weak :context, V8::C::Context::New()
+  context "the low level C interface" do
+    context "at the very minimum" do
+      it "does not leak a context" do
+        weak :context, V8::C::Context::New()
+      end
+    
+      it "does not leak a simple object either" do
+        cxt = V8::C::Context::New()
+        cxt.Enter()
+        begin
+          weak :object, V8::C::Object::New()
+        ensure
+          cxt.Exit()
+        end
+      end
     end
 
-    it "does not leak a simple object either" do
-      cxt = V8::C::Context::New()
-      cxt.Enter()
-      begin
-        weak :object, V8::C::Object::New()
-      ensure
-        cxt.Exit()
+    context "a ruby proxy for a JavaScript object" do
+      it "holds a strong reference to the JavaScript object" do
+        pending
+        cxt = V8::C::Context::New()
+        handle = c::Handle::New(cxt)
+        handle.MakeWeak()
+        gc do
+          handle.IsEmpty().should be_false
+          handle.IsNearDeath().should be_false
+          handle.IsWeak().should be_true
+        end
+        cxt = nil
+        gc do
+          # handle.IsEmpty().should be_true
+          handle.IsNearDeath().should be_true
+        end
       end
     end
   end
 
-  before(:all) {GC.stress = true}
-  after(:all) {GC.stress = false}
+  before(:all) {@stress = GC.stress; GC.stress = true}
+  after(:all) {GC.stress = @stress}
 
   before do
     @refs = {}
   end
 
   after do
-    GC.start
-    while !V8::C::V8::IdleNotification();end
-    GC.start
-    while !V8::C::V8::IdleNotification();end 
-    for name, ref in @refs
-      if ref.weakref_alive?
-        fail "refererc #{name} was not garbage collected"
+    gc do
+      for name, ref in @refs
+        if ref.weakref_alive?
+          fail "reference #{name} was not garbage collected"
+        end
       end
     end
   end
@@ -45,4 +64,16 @@ describe "Memory Usage" do
     @refs[name] = WeakRef.new(ref)
   end
 
+  def gc
+    GC.start
+    while !V8::C::V8::IdleNotification();end
+    GC.start
+    while !V8::C::V8::IdleNotification();end
+    yield
+  end
+  
+  def c
+    V8::C
+  end
+
 end if GC.respond_to?(:stress=)