| // Copyright 2021 the V8 project 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 INCLUDE_V8_EMBEDDER_STATE_SCOPE_H_ |
| #define INCLUDE_V8_EMBEDDER_STATE_SCOPE_H_ |
| |
| #include <memory> |
| |
| #include "v8-context.h" // NOLINT(build/include_directory) |
| #include "v8-internal.h" // NOLINT(build/include_directory) |
| #include "v8-local-handle.h" // NOLINT(build/include_directory) |
| |
| namespace v8 { |
| |
| namespace internal { |
| class EmbedderState; |
| } // namespace internal |
| |
| // A StateTag represents a possible state of the embedder. |
| enum class EmbedderStateTag : uint8_t { |
| // reserved |
| EMPTY = 0, |
| OTHER = 1, |
| // embedder can define any state after |
| }; |
| |
| // A stack-allocated class that manages an embedder state on the isolate. |
| // After an EmbedderState scope has been created, a new embedder state will be |
| // pushed on the isolate stack. |
| class V8_EXPORT EmbedderStateScope { |
| public: |
| EmbedderStateScope(Isolate* isolate, Local<v8::Context> context, |
| EmbedderStateTag tag); |
| |
| ~EmbedderStateScope(); |
| |
| private: |
| // Declaring operator new and delete as deleted is not spec compliant. |
| // Therefore declare them private instead to disable dynamic alloc |
| void* operator new(size_t size); |
| void* operator new[](size_t size); |
| void operator delete(void*, size_t); |
| void operator delete[](void*, size_t); |
| |
| std::unique_ptr<internal::EmbedderState> embedder_state_; |
| }; |
| |
| } // namespace v8 |
| |
| #endif // INCLUDE_V8_EMBEDDER_STATE_SCOPE_H_ |