notification_broadcaster.h

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#pragma once
 
#include <rex/assert.h>
#include <rex/kernel/types/status.h>
#include <rex/module.h>
#include <rex/platform.h>
#include <rex/result.h>
#include <rex/types.h>
 
namespace rex::kernel {

using XNotificationID = u32;
 
REX_DECLARE_INTERFACE(INotificationBroadcaster, 1)
  virtual ~INotificationBroadcaster() = default;

  [[nodiscard]] virtual Result<X_HANDLE> AddNotifyListener(u64 mask, u32 max_version) = 0;

  virtual void BroadcastNotification(XNotificationID id, u32 data) = 0;
};
 
union XNotificationKey {
  XNotificationID id; 
  struct {
    u32 local_id : 16;  
    u32 version : 9;    
    u32 mask_index : 6; 
    u32 : 1;
  };
 
  constexpr XNotificationKey(XNotificationID notification_id = static_cast<XNotificationID>(0))
      : id(notification_id) {
    REX_STATIC_ASSERT_SIZE(*this, sizeof(id));
  }
 
  constexpr operator XNotificationID() const { return id; }
};
 
}  // namespace rex::kernel