text: /*
     +----------------------------------------------------------------------+
     | HipHop for PHP                                                       |
     +----------------------------------------------------------------------+
     | Copyright (c) 2010-2014 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_GEN_MAP_WAIT_HANDLE_H_
  #define incl_HPHP_EXT_ASIO_GEN_MAP_WAIT_HANDLE_H_
  
  #include "hphp/runtime/ext/extension.h"
  #include "hphp/runtime/base/smart-ptr.h"
  #include "hphp/runtime/ext/asio/waitable_wait_handle.h"
  
  namespace HPHP {
  ///////////////////////////////////////////////////////////////////////////////
  // class GenMapWaitHandle
  
  /**
   * A wait handle that waits for a map of wait handles. The wait handle
   * finishes once all wait handles in the map are finished. The result value
   * preserves the keys of the original map. If one of the wait handles failed,
   * the exception is propagated by failure.
   */
  class c_Map;
  class c_GenMapWaitHandle final : public c_WaitableWaitHandle {
   public:
    DECLARE_CLASS_NO_SWEEP(GenMapWaitHandle)
  
    explicit c_GenMapWaitHandle(Class* cls = c_GenMapWaitHandle::classof())
      : c_WaitableWaitHandle(cls) {}
    ~c_GenMapWaitHandle() {}
  
    static void ti_setoncreatecallback(const Variant& callback);
    static Object ti_create(const Variant& dependencies);
  
   public:
    static constexpr ptrdiff_t blockableOff() {
      return offsetof(c_GenMapWaitHandle, m_blockable);
    }
  
    void onUnblocked();
    String getName();
    c_WaitableWaitHandle* getChild();
    void enterContextImpl(context_idx_t ctx_idx);
  
   private:
    void setState(uint8_t state) { setKindState(Kind::GenMap, state); }
    void initialize(const Object& exception, c_Map* deps,
                    ssize_t iter_pos, c_WaitableWaitHandle* child);
  
    Object m_exception;
    SmartPtr<c_Map> m_deps;
    ssize_t m_iterPos;
    AsioBlockable m_blockable;
  
    static const int8_t STATE_BLOCKED = 2;
  };
  
  inline c_GenMapWaitHandle* c_WaitHandle::asGenMap() {
    assert(getKind() == Kind::GenMap);
    return static_cast<c_GenMapWaitHandle*>(this);
  }
  
  ///////////////////////////////////////////////////////////////////////////////
  }
  
  #endif // incl_HPHP_EXT_ASIO_GEN_MAP_WAIT_HANDLE_H_
  