src/hotspot/share/runtime/handshake.hpp

rev 57137 : imported patch 8234796-v2

*** 24,49 ****
  
  #ifndef SHARE_RUNTIME_HANDSHAKE_HPP
  #define SHARE_RUNTIME_HANDSHAKE_HPP
  
  #include "memory/allocation.hpp"
  #include "runtime/flags/flagSetting.hpp"
  #include "runtime/semaphore.hpp"
  
- class ThreadClosure;
  class JavaThread;
  
! // A handshake operation is a callback that is executed for each JavaThread
  // while that thread is in a safepoint safe state. The callback is executed
  // either by the thread itself or by the VM thread while keeping the thread
  // in a blocked state. A handshake can be performed with a single
  // JavaThread as well.
  class Handshake : public AllStatic {
   public:
    // Execution of handshake operation
!   static void execute(ThreadClosure* thread_cl);
!   static bool execute(ThreadClosure* thread_cl, JavaThread* target);
  };
  
  class HandshakeOperation;
  
  // The HandshakeState keep tracks of an ongoing handshake for one JavaThread.
--- 24,59 ----
  
  #ifndef SHARE_RUNTIME_HANDSHAKE_HPP
  #define SHARE_RUNTIME_HANDSHAKE_HPP
  
  #include "memory/allocation.hpp"
+ #include "memory/iterator.hpp"
  #include "runtime/flags/flagSetting.hpp"
  #include "runtime/semaphore.hpp"
  
  class JavaThread;
  
! // A handshake closure is a callback that is executed for each JavaThread
  // while that thread is in a safepoint safe state. The callback is executed
  // either by the thread itself or by the VM thread while keeping the thread
  // in a blocked state. A handshake can be performed with a single
  // JavaThread as well.
+ class HandshakeClosure : public ThreadClosure {
+   const char* const _name;
+  public:
+   HandshakeClosure(const char* name) : _name(name) {}
+   const char* name() const {
+     return _name;
+   }
+   virtual void do_thread(Thread* thread) = 0;
+ };
+ 
  class Handshake : public AllStatic {
   public:
    // Execution of handshake operation
!   static void execute(HandshakeClosure* hs_cl);
!   static bool execute(HandshakeClosure* hs_cl, JavaThread* target);
  };
  
  class HandshakeOperation;
  
  // The HandshakeState keep tracks of an ongoing handshake for one JavaThread.