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// 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 <memory>
#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(const ContextHolder&) = delete;
ContextHolder& operator=(const ContextHolder&) = delete;
~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_;
std::unique_ptr<PerContextData> data_;
};
} // namespace gin
#endif // GIN_PUBLIC_CONTEXT_HOLDER_H_