CLObject.h

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Author : John Plate
Date : 2021-06-17 09:29:29
Hash : 44a5c913
Message : 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>

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_

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

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