kc3-lang/angle/src/libANGLE/renderer/cl/CLMemoryCL.cpp

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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/renderer/cl/CLMemoryCL.cpp

• //
  // 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.
  //
  // CLMemoryCL.cpp: Implements the class methods for CLMemoryCL.
  
  #include "libANGLE/renderer/cl/CLMemoryCL.h"
  
  #include "libANGLE/renderer/cl/CLContextCL.h"
  
  #include "libANGLE/CLBuffer.h"
  #include "libANGLE/CLContext.h"
  
  namespace rx
  {
  
  CLMemoryCL::CLMemoryCL(const cl::Memory &memory, cl_mem native)
      : CLMemoryImpl(memory), mNative(native)
  {
      memory.getContext().getImpl<CLContextCL>().mData->mMemories.emplace(memory.getNative());
  }
  
  CLMemoryCL::~CLMemoryCL()
  {
      const size_t numRemoved =
          mMemory.getContext().getImpl<CLContextCL>().mData->mMemories.erase(mMemory.getNative());
      ASSERT(numRemoved == 1u);
  
      if (mNative->getDispatch().clReleaseMemObject(mNative) != CL_SUCCESS)
      {
          ERR() << "Error while releasing CL memory object";
      }
  }
  
  size_t CLMemoryCL::getSize(cl_int &errorCode) const
  {
      size_t size = 0u;
      errorCode = mNative->getDispatch().clGetMemObjectInfo(mNative, CL_MEM_SIZE, sizeof(size), &size,
                                                            nullptr);
      if (errorCode != CL_SUCCESS)
      {
          return 0u;
      }
      return size;
  }
  
  CLMemoryImpl::Ptr CLMemoryCL::createSubBuffer(const cl::Buffer &buffer,
                                                cl::MemFlags flags,
                                                size_t size,
                                                cl_int &errorCode)
  {
      const cl_buffer_region region = {buffer.getOffset(), size};
      const cl_mem nativeBuffer     = mNative->getDispatch().clCreateSubBuffer(
          mNative, flags.get(), CL_BUFFER_CREATE_TYPE_REGION, &region, &errorCode);
      return CLMemoryImpl::Ptr(nativeBuffer != nullptr ? new CLMemoryCL(buffer, nativeBuffer)
                                                       : nullptr);
  }
  
  }  // namespace rx
  

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