Object.h

// ======================================================================== //
// Copyright 2019-2020 Ingo Wald                                            //
//                                                                          //
// Licensed under the Apache License, Version 2.0 (the "License");          //
// you may not use this file except in compliance with the License.         //
// You may obtain a copy of the License at                                  //
//                                                                          //
//     http://www.apache.org/licenses/LICENSE-2.0                           //
//                                                                          //
// Unless required by applicable law or agreed to in writing, software      //
// distributed under the License is distributed on an "AS IS" BASIS,        //
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. //
// See the License for the specific language governing permissions and      //
// limitations under the License.                                           //
// ======================================================================== //
 
#pragma once
 
#include "DeviceContext.h"
 
namespace owl {
 
  std::string typeToString(OWLDataType type);
 
  size_t      sizeOf(OWLDataType type);
 
 
  struct Object : public std::enable_shared_from_this<Object> {
    typedef std::shared_ptr<Object> SP;
 
    struct DeviceData {
      typedef std::shared_ptr<DeviceData> SP;
 
      DeviceData(DeviceContext::SP device) : device(device) {};
 
      virtual ~DeviceData() {}
 
      template<typename T> inline T &as();
 
      DeviceContext::SP device;
    };
 
    Object();
    virtual ~Object() {}
 
    virtual std::string toString() const;
 
    virtual DeviceData::SP createOn(const std::shared_ptr<DeviceContext> &device);
 
    void createDeviceData(const std::vector<std::shared_ptr<DeviceContext>> &devices);
 
    template<typename T> inline std::shared_ptr<T> as();
 
    const size_t uniqueID;
 
    static std::atomic<uint64_t> nextAvailableID;
 
    std::vector<DeviceData::SP> deviceData;
  };
 
  
  struct ContextObject : public Object {
    typedef std::shared_ptr<ContextObject> SP;
    
    ContextObject(Context *const context)
      : context(context)
    {}
    
    std::string toString() const override;
    
    Context *const context;
  };
 
 
  // ------------------------------------------------------------------
  // implementation section
  // ------------------------------------------------------------------
  
  template<typename T> inline T &Object::DeviceData::as()
  { return *dynamic_cast<T *>(this); }
 
  template<typename T> inline std::shared_ptr<T> Object::as() 
  { return std::dynamic_pointer_cast<T>(shared_from_this()); }
 
} // ::owl