zircon/kernel/object/include/object/event_pair_dispatcher.h

// Copyright 2016 The Fuchsia Authors
//
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file or at
// https://opensource.org/licenses/MIT

#ifndef ZIRCON_KERNEL_OBJECT_INCLUDE_OBJECT_EVENT_PAIR_DISPATCHER_H_
#define ZIRCON_KERNEL_OBJECT_INCLUDE_OBJECT_EVENT_PAIR_DISPATCHER_H_

#include <sys/types.h>
#include <zircon/rights.h>
#include <zircon/types.h>

#include <fbl/ref_ptr.h>
#include <object/dispatcher.h>
#include <object/handle.h>

class EventPairDispatcher final
    : public PeeredDispatcher<EventPairDispatcher, ZX_DEFAULT_EVENTPAIR_RIGHTS, ZX_EVENT_SIGNALED> {
 public:
  static zx_status_t Create(KernelHandle<EventPairDispatcher>* handle0,
                            KernelHandle<EventPairDispatcher>* handle1, zx_rights_t* rights);

  ~EventPairDispatcher() final;
  zx_obj_type_t get_type() const final { return ZX_OBJ_TYPE_EVENTPAIR; }

  // PeeredDispatcher implementation.
  void on_zero_handles_locked() TA_REQ(get_lock());
  void OnPeerZeroHandlesLocked() TA_REQ(get_lock());

 private:
  explicit EventPairDispatcher(fbl::RefPtr<PeerHolder<EventPairDispatcher>> holder);
  void Init(fbl::RefPtr<EventPairDispatcher> other);
};

#endif  // ZIRCON_KERNEL_OBJECT_INCLUDE_OBJECT_EVENT_PAIR_DISPATCHER_H_