gin/per_context_data.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "gin/per_context_data.h"
   6
   7 #include "base/logging.h"
   8 #include "gin/public/context_holder.h"
   9 #include "gin/public/wrapper_info.h"
  10
  11 namespace gin {
  12
  13 ContextSupplement::ContextSupplement() {
  14 }
  15
  16 ContextSupplement::~ContextSupplement() {
  17 }
  18
  19 PerContextData::PerContextData(v8::Handle<v8::Context> context)
  20     : runner_(NULL) {
  21   context->SetAlignedPointerInEmbedderData(
  22       kPerContextDataStartIndex + kEmbedderNativeGin, this);
  23 }
  24
  25 PerContextData::~PerContextData() {
  26   DCHECK(supplements_.empty());
  27 }
  28
  29 void PerContextData::Detach(v8::Handle<v8::Context> context) {
  30   DCHECK(From(context) == this);
  31   context->SetAlignedPointerInEmbedderData(
  32       kPerContextDataStartIndex + kEmbedderNativeGin, NULL);
  33
  34   SuplementVector supplements;
  35   supplements.swap(supplements_);
  36
  37   for (SuplementVector::iterator it = supplements.begin();
  38        it != supplements.end(); ++it) {
  39     (*it)->Detach(context);
  40   }
  41 }
  42
  43 // static
  44 PerContextData* PerContextData::From(v8::Handle<v8::Context> context) {
  45   return static_cast<PerContextData*>(
  46       context->GetAlignedPointerFromEmbedderData(kEncodedValueIndex));
  47 }
  48
  49 void PerContextData::AddSupplement(scoped_ptr<ContextSupplement> supplement) {
  50   supplements_.push_back(supplement.release());
  51 }
  52
  53 }  // namespace gin