chromium/v8/src/execution/local-isolate.h

// Copyright 2020 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 V8_EXECUTION_LOCAL_ISOLATE_H_
#define V8_EXECUTION_LOCAL_ISOLATE_H_

#include <optional>

#include "src/base/macros.h"
#include "src/execution/shared-mutex-guard-if-off-thread.h"
#include "src/execution/thread-id.h"
#include "src/handles/handles.h"
#include "src/handles/local-handles.h"
#include "src/handles/maybe-handles.h"
#include "src/heap/local-factory.h"
#include "src/heap/local-heap.h"
#include "src/logging/runtime-call-stats.h"

namespace v8 {

namespace bigint {
class Processor;
}

namespace internal {

class Isolate;
class LocalLogger;
class RuntimeCallStats;

// HiddenLocalFactory parallels Isolate's HiddenFactory
class V8_EXPORT_PRIVATE HiddenLocalFactory : private LocalFactory { … };

// And Isolate-like class that can be passed in to templated methods that need
// an isolate syntactically, but are usable off-thread.
//
// This class holds an LocalFactory, but is otherwise effectively a stub
// implementation of an Isolate. In particular, it doesn't allow throwing
// exceptions, and hard crashes if you try.
class V8_EXPORT_PRIVATE LocalIsolate final : private HiddenLocalFactory { … };

SharedMutexGuardIfOffThread<LocalIsolate, kIsShared>;

}  // namespace internal
}  // namespace v8

#endif  // V8_EXECUTION_LOCAL_ISOLATE_H_