// Copyright (c) 2015, 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 VM_THREAD_H_
#define VM_THREAD_H_

#include "vm/isolate.h"

namespace dart {

// A VM thread; may be executing Dart code or performing helper tasks like
// garbage collection.
class Thread {
 public:
  static Thread* Current() {
    // For now, there is still just one thread per isolate, and the Thread
    // class just aliases the Isolate*. Once all interfaces and uses have been
    // updated to distinguish between isolates and threads, Thread will get its
    // own thread-local storage key.
    return reinterpret_cast<Thread*>(Isolate::Current());
  }

  // The topmost zone used for allocation in this thread.
  Zone* zone() {
    return reinterpret_cast<BaseIsolate*>(this)->current_zone();
  }

  // The isolate that this thread is operating on.
  Isolate* isolate() {
    return reinterpret_cast<Isolate*>(this);
  }

 private:
  DISALLOW_COPY_AND_ASSIGN(Thread);
};

}  // namespace dart

#endif  // VM_THREAD_H_