kc3-lang/angle/src/libANGLE/CLPlatform.h

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• Hash : daf18594
  Author :
  Date : 2021-05-31T12:04:42
  

  CL: Refactor front end entry functions
  
  Move all front end functions that are only called from the OpenCL
  entry points to a separate section at the top of the front end
  object class bodies, which improves readability.
  
  Bug: angleproject:6001
  Change-Id: Id360adbf0c439e4068c379aa4ea1da25e99f7b53
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2928419
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Cody Northrop <cnorthrop@google.com>
  

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• src/libANGLE/CLPlatform.h

• //
  // Copyright 2021 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // CLPlatform.h: Defines the cl::Platform class, which provides information about platform-specific
  // OpenCL features.
  
  #ifndef LIBANGLE_CLPLATFORM_H_
  #define LIBANGLE_CLPLATFORM_H_
  
  #include "libANGLE/CLObject.h"
  #include "libANGLE/renderer/CLPlatformImpl.h"
  
  #include "anglebase/no_destructor.h"
  
  namespace cl
  {
  
  class Platform final : public _cl_platform_id, public Object
  {
    public:
      // Front end entry functions, only called from OpenCL entry points
  
      static void Initialize(const cl_icd_dispatch &dispatch,
                             rx::CLPlatformImpl::CreateFuncs &&createFuncs);
  
      static Platform *GetDefault();
      static Platform *CastOrDefault(cl_platform_id platform);
      static bool IsValidOrDefault(const _cl_platform_id *platform);
  
      static cl_int GetPlatformIDs(cl_uint numEntries,
                                   cl_platform_id *platforms,
                                   cl_uint *numPlatforms);
  
      cl_int getInfo(PlatformInfo name, size_t valueSize, void *value, size_t *valueSizeRet) const;
  
      cl_int getDeviceIDs(DeviceType deviceType,
                          cl_uint numEntries,
                          cl_device_id *devices,
                          cl_uint *numDevices) const;
  
      static cl_context CreateContext(const cl_context_properties *properties,
                                      cl_uint numDevices,
                                      const cl_device_id *devices,
                                      ContextErrorCB notify,
                                      void *userData,
                                      cl_int &errorCode);
  
      static cl_context CreateContextFromType(const cl_context_properties *properties,
                                              DeviceType deviceType,
                                              ContextErrorCB notify,
                                              void *userData,
                                              cl_int &errorCode);
  
    public:
      ~Platform() override;
  
      const rx::CLPlatformImpl::Info &getInfo() const;
      cl_version getVersion() const;
      bool isVersionOrNewer(cl_uint major, cl_uint minor) const;
      const DevicePtrs &getDevices() const;
  
      template <typename T = rx::CLPlatformImpl>
      T &getImpl() const;
  
      static const PlatformPtrs &GetPlatforms();
  
      static constexpr const char *GetVendor();
  
    private:
      explicit Platform(const rx::CLPlatformImpl::CreateFunc &createFunc);
  
      DevicePtrs createDevices(rx::CLDeviceImpl::CreateDatas &&createDatas);
  
      static PlatformPtrs &GetPointers();
  
      const rx::CLPlatformImpl::Ptr mImpl;
      const rx::CLPlatformImpl::Info mInfo;
      const DevicePtrs mDevices;
  
      static constexpr char kVendor[]    = "ANGLE";
      static constexpr char kIcdSuffix[] = "ANGLE";
  };
  
  inline Platform *Platform::GetDefault()
  {
      return GetPlatforms().empty() ? nullptr : GetPlatforms().front().get();
  }
  
  inline Platform *Platform::CastOrDefault(cl_platform_id platform)
  {
      return platform != nullptr ? &platform->cast<Platform>() : GetDefault();
  }
  
  // Our CL implementation defines that a nullptr value chooses the platform that we provide as
  // default, so this function returns true for a nullptr value if a default platform exists.
  inline bool Platform::IsValidOrDefault(const _cl_platform_id *platform)
  {
      return platform != nullptr ? platform->isValid() : GetDefault() != nullptr;
  }
  
  inline const rx::CLPlatformImpl::Info &Platform::getInfo() const
  {
      return mInfo;
  }
  
  inline cl_version Platform::getVersion() const
  {
      return mInfo.mVersion;
  }
  
  inline bool Platform::isVersionOrNewer(cl_uint major, cl_uint minor) const
  {
      return mInfo.mVersion >= CL_MAKE_VERSION(major, minor, 0u);
  }
  
  inline const DevicePtrs &Platform::getDevices() const
  {
      return mDevices;
  }
  
  template <typename T>
  inline T &Platform::getImpl() const
  {
      return static_cast<T &>(*mImpl);
  }
  
  inline const PlatformPtrs &Platform::GetPlatforms()
  {
      return GetPointers();
  }
  
  constexpr const char *Platform::GetVendor()
  {
      return kVendor;
  }
  
  inline PlatformPtrs &Platform::GetPointers()
  {
      static angle::base::NoDestructor<PlatformPtrs> sPointers;
      return *sPointers;
  }
  
  }  // namespace cl
  
  #endif  // LIBANGLE_CLPLATFORM_H_
  

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