kc3-lang/angle/src/libANGLE/CLEvent.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/CLEvent.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.
  //
  // CLEvent.h: Defines the cl::Event class, which can be used to track the execution status of an
  // OpenCL command.
  
  #ifndef LIBANGLE_CLEVENT_H_
  #define LIBANGLE_CLEVENT_H_
  
  #include "libANGLE/CLObject.h"
  #include "libANGLE/renderer/CLEventImpl.h"
  
  #include "common/SynchronizedValue.h"
  
  #include <array>
  
  namespace cl
  {
  
  class Event final : public _cl_event, public Object
  {
    public:
      // Front end entry functions, only called from OpenCL entry points
  
      cl_int setUserEventStatus(cl_int executionStatus);
  
      cl_int getInfo(EventInfo name, size_t valueSize, void *value, size_t *valueSizeRet) const;
  
      cl_int setCallback(cl_int commandExecCallbackType, EventCB pfnNotify, void *userData);
  
      cl_int getProfilingInfo(ProfilingInfo name,
                              size_t valueSize,
                              void *value,
                              size_t *valueSizeRet);
  
    public:
      ~Event() override;
  
      Context &getContext();
      const Context &getContext() const;
      const CommandQueuePtr &getCommandQueue() const;
      cl_command_type getCommandType() const;
      bool wasStatusChanged() const;
  
      template <typename T = rx::CLEventImpl>
      T &getImpl() const;
  
      void callback(cl_int commandStatus);
  
      static EventPtrs Cast(cl_uint numEvents, const cl_event *eventList);
  
    private:
      using CallbackData = std::pair<EventCB, void *>;
      using Callbacks    = std::vector<CallbackData>;
  
      Event(Context &context, cl_int &errorCode);
  
      Event(CommandQueue &queue,
            cl_command_type commandType,
            const rx::CLEventImpl::CreateFunc &createFunc,
            cl_int &errorCode);
  
      const ContextPtr mContext;
      const CommandQueuePtr mCommandQueue;
      const cl_command_type mCommandType;
      const rx::CLEventImpl::Ptr mImpl;
  
      bool mStatusWasChanged = false;
  
      // Create separate storage for each possible callback type.
      static_assert(CL_COMPLETE == 0 && CL_RUNNING == 1 && CL_SUBMITTED == 2,
                    "OpenCL command execution status values are not as assumed");
      angle::SynchronizedValue<std::array<Callbacks, 3u>> mCallbacks;
  
      friend class Object;
  };
  
  inline Context &Event::getContext()
  {
      return *mContext;
  }
  
  inline const Context &Event::getContext() const
  {
      return *mContext;
  }
  
  inline const CommandQueuePtr &Event::getCommandQueue() const
  {
      return mCommandQueue;
  }
  
  inline cl_command_type Event::getCommandType() const
  {
      return mCommandType;
  }
  
  inline bool Event::wasStatusChanged() const
  {
      return mStatusWasChanged;
  }
  
  template <typename T>
  inline T &Event::getImpl() const
  {
      return static_cast<T &>(*mImpl);
  }
  
  }  // namespace cl
  
  #endif  // LIBANGLE_CLEVENT_H_
  

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