| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef GIN_PUBLIC_CONTEXT_HOLDER_H_ |
| #define GIN_PUBLIC_CONTEXT_HOLDER_H_ |
| |
| #include <list> |
| |
| #include "base/macros.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "gin/gin_export.h" |
| #include "v8/include/v8.h" |
| |
| namespace gin { |
| |
| // Gin embedder that store embedder data in v8::Contexts must do so in a |
| // single field with the index kPerContextDataStartIndex + GinEmbedder-enum. |
| // The field at kDebugIdIndex is treated specially by V8 and is reserved for |
| // a V8 debugger implementation (not used by gin). |
| enum ContextEmbedderDataFields { |
| kDebugIdIndex = v8::Context::kDebugIdIndex, |
| kPerContextDataStartIndex, |
| }; |
| |
| class PerContextData; |
| |
| // ContextHolder is a generic class for holding a v8::Context. |
| class GIN_EXPORT ContextHolder { |
| public: |
| explicit ContextHolder(v8::Isolate* isolate); |
| ~ContextHolder(); |
| |
| v8::Isolate* isolate() const { return isolate_; } |
| |
| v8::Local<v8::Context> context() const { |
| return v8::Local<v8::Context>::New(isolate_, context_); |
| } |
| |
| void SetContext(v8::Local<v8::Context> context); |
| |
| private: |
| v8::Isolate* isolate_; |
| v8::UniquePersistent<v8::Context> context_; |
| scoped_ptr<PerContextData> data_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ContextHolder); |
| }; |
| |
| } // namespace gin |
| |
| #endif // GIN_PUBLIC_CONTEXT_HOLDER_H_ |