src/hotspot/share/gc/z/zLock.hpp

*** 1,7 ****
  /*
!  * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
***************
*** 32,44 ****
    pthread_mutex_t _lock;
  
  public:
    ZLock();
  
!   void lock();
!   bool try_lock();
!   void unlock();
  };
  
  class ZLocker : public StackObj {
  private:
    ZLock* const _lock;
--- 32,44 ----
    pthread_mutex_t _lock;
  
  public:
    ZLock();
  
!   virtual void lock();
!   virtual bool try_lock();
!   virtual void unlock();
  };
  
  class ZLocker : public StackObj {
  private:
    ZLock* const _lock;
***************
*** 46,51 ****
--- 46,65 ----
  public:
    ZLocker(ZLock* lock);
    ~ZLocker();
  };
  
+ class ZReentrantLock: public ZLock {
+   Thread* volatile _owner;
+ 
+ public:
+   ZReentrantLock();
+ 
+   virtual void lock();
+   virtual bool try_lock();
+   virtual void unlock();
+ 
+   bool is_owned() const;
+   bool reentrant_lock();
+ };
+ 
  #endif // SHARE_GC_Z_ZLOCK_HPP