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

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• Hash : 44a5c913
  Author :
  Date : 2021-06-17T09:29:29
  

  CL: Make CL front end and back end thread-safe
  
  Add locking to all mutable variables of the CL objects in the
  front end and pass-through back end to make them thread-safe.
  This fixes a crash in a multi-threaded CTS test.
  
  Bug: angleproject:6015
  Change-Id: I1d6471c851217639411c434c82acd32d14035291
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2967468
  Commit-Queue: John Plate <jplate@google.com>
  Reviewed-by: Cody Northrop <cnorthrop@google.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/CLObject.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.
  //
  // CLObject.h: Defines the cl::Object class, which is the base class of all ANGLE CL objects.
  
  #ifndef LIBANGLE_CLOBJECT_H_
  #define LIBANGLE_CLOBJECT_H_
  
  #include "libANGLE/CLtypes.h"
  #include "libANGLE/renderer/CLtypes.h"
  
  #include <atomic>
  
  namespace cl
  {
  
  class Object
  {
    public:
      Object();
      virtual ~Object();
  
      cl_uint getRefCount() const noexcept { return mRefCount; }
  
      void retain() noexcept { ++mRefCount; }
  
      bool release()
      {
          if (mRefCount == 0u)
          {
              WARN() << "Unreferenced object without references";
              return true;
          }
          return --mRefCount == 0u;
      }
  
      template <typename T, typename... Args>
      static T *Create(cl_int &errorCode, Args &&... args)
      {
          T *object = new T(std::forward<Args>(args)..., errorCode);
          if (errorCode != CL_SUCCESS)
          {
              delete object;
              object = nullptr;
          }
          return object;
      }
  
    private:
      std::atomic<cl_uint> mRefCount;
  };
  
  }  // namespace cl
  
  #endif  // LIBANGLE_CLCONTEXT_H_
  

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