base_isolate.h

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// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
 
#ifndef RUNTIME_VM_BASE_ISOLATE_H_
#define RUNTIME_VM_BASE_ISOLATE_H_
 
#include "platform/assert.h"
#include "vm/globals.h"
 
namespace dart {
 
class HandleScope;
class StackResource;
class Thread;
class Zone;
 
// A BaseIsolate contains just enough functionality to allocate
// StackResources.  This allows us to inline the StackResource
// constructor/destructor for performance.
class BaseIsolate {
 public:
#if defined(DEBUG)
  static void AssertCurrent(BaseIsolate* isolate);
#endif
 
 protected:
  BaseIsolate() {}
 
  ~BaseIsolate() {
    // Do not delete stack resources: top_resource_ and current_zone_.
  }
 
  Thread* scheduled_mutator_thread_ = nullptr;
 
  // Stores the saved [Thread] object of a mutator. Mutators may retain their
  // thread even when being descheduled (e.g. due to having an active stack).
  Thread* mutator_thread_ = nullptr;
 
 private:
  DISALLOW_COPY_AND_ASSIGN(BaseIsolate);
};
 
}  // namespace dart
 
#endif  // RUNTIME_VM_BASE_ISOLATE_H_