text: /*
     +----------------------------------------------------------------------+
     | HipHop for PHP                                                       |
     +----------------------------------------------------------------------+
     | Copyright (c) 2010-2015 Facebook, Inc. (http://www.facebook.com)     |
     | Copyright (c) 1997-2010 The PHP Group                                |
     +----------------------------------------------------------------------+
     | This source file is subject to version 3.01 of the PHP license,      |
     | that is bundled with this package in the file LICENSE, and is        |
     | available through the world-wide-web at the following url:           |
     | http://www.php.net/license/3_01.txt                                  |
     | If you did not receive a copy of the PHP license and are unable to   |
     | obtain it through the world-wide-web, please send a note to          |
     | license@php.net so we can mail you a copy immediately.               |
     +----------------------------------------------------------------------+
  */
  
  #ifndef incl_HPHP_EXT_ASIO_EXTERNAL_THREAD_EVENT_WAIT_HANDLE_H_
  #define incl_HPHP_EXT_ASIO_EXTERNAL_THREAD_EVENT_WAIT_HANDLE_H_
  
  #include "hphp/runtime/ext/extension.h"
  #include "hphp/runtime/ext/asio/ext_waitable-wait-handle.h"
  
  namespace HPHP {
  ///////////////////////////////////////////////////////////////////////////////
  // class ExternalThreadEventWaitHandle
  
  /**
   * A wait handle that synchronizes against C++ operation in external thread.
   *
   * See asio-external-thread-event.h for more details.
   */
  class AsioExternalThreadEvent;
  struct c_ExternalThreadEventWaitHandle final : c_WaitableWaitHandle {
    WAITHANDLE_CLASSOF(ExternalThreadEventWaitHandle);
    WAITHANDLE_DTOR(ExternalThreadEventWaitHandle);
    void sweep();
  
    explicit c_ExternalThreadEventWaitHandle(Class* cls =
        c_ExternalThreadEventWaitHandle::classof())
      : c_WaitableWaitHandle(cls) {}
    ~c_ExternalThreadEventWaitHandle() {}
  
   public:
    static req::ptr<c_ExternalThreadEventWaitHandle>
      Create(AsioExternalThreadEvent* event, ObjectData* priv_data);
  
    c_ExternalThreadEventWaitHandle* getNextToProcess() {
      assert(getState() == STATE_WAITING);
      return m_nextToProcess;
    }
    void setNextToProcess(c_ExternalThreadEventWaitHandle* next) {
      assert(getState() == STATE_WAITING);
      m_nextToProcess = next;
    }
    ObjectData* getPrivData() { return m_privData.get(); }
  
    void abandon(bool sweeping);
    void process();
    String getName();
    void exitContext(context_idx_t ctx_idx);
    void registerToContext();
    void unregisterFromContext();
  
   private:
    void setState(uint8_t s) { setKindState(Kind::ExternalThreadEvent, s); }
    void initialize(AsioExternalThreadEvent* event, ObjectData* priv_data);
    void destroyEvent(bool sweeping = false);
  
   private:
    c_ExternalThreadEventWaitHandle* m_nextToProcess;
    AsioExternalThreadEvent* m_event;
    Object m_privData;
    SweepableMember<c_ExternalThreadEventWaitHandle> m_sweepable;
  
   public:
    static const uint8_t STATE_WAITING = 2;
  
    friend struct SweepableMember<c_ExternalThreadEventWaitHandle>;
  };
  
  void HHVM_STATIC_METHOD(ExternalThreadEventWaitHandle, setOnCreateCallback,
                          const Variant& callback);
  void HHVM_STATIC_METHOD(ExternalThreadEventWaitHandle, setOnSuccessCallback,
                          const Variant& callback);
  void HHVM_STATIC_METHOD(ExternalThreadEventWaitHandle, setOnFailCallback,
                          const Variant& callback);
  
  inline c_ExternalThreadEventWaitHandle* c_WaitHandle::asExternalThreadEvent() {
    assert(getKind() == Kind::ExternalThreadEvent);
    return static_cast<c_ExternalThreadEventWaitHandle*>(this);
  }
  
  ///////////////////////////////////////////////////////////////////////////////
  }
  
  #endif // incl_HPHP_EXT_ASIO_EXTERNAL_THREAD_EVENT_WAIT_HANDLE_H_
  