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

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• Hash : c27a4a1d
  Author :
  Date : 2023-11-27T14:44:07
  

  Re-use EGL sync object allocations.
  
  Create a pool of EGL sync objects with their implementations that can
  be re-used. Update all backend implementations to support multiple
  calls to initialize/destroy.
  
  Pool size of 32 chosen through experimentation using Chrome.
  
  Bug: angleproject:8430
  Change-Id: I86fea41aed35eddccc953efb3802bf5fdb7f3cb2
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5063341
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Commit-Queue: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/EGLSync.h

• //
  // Copyright 2019 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.
  //
  
  // EGLSync.h: Defines the egl::Sync classes, which support the EGL_KHR_fence_sync,
  // EGL_KHR_wait_sync and EGL 1.5 sync objects.
  
  #ifndef LIBANGLE_EGLSYNC_H_
  #define LIBANGLE_EGLSYNC_H_
  
  #include "libANGLE/Debug.h"
  #include "libANGLE/Error.h"
  #include "libANGLE/RefCountObject.h"
  
  #include "common/angleutils.h"
  
  namespace rx
  {
  class EGLImplFactory;
  class EGLSyncImpl;
  }  // namespace rx
  
  namespace gl
  {
  class Context;
  }  // namespace gl
  
  namespace egl
  {
  class Sync final : public LabeledObject
  {
    public:
      Sync(rx::EGLImplFactory *factory, EGLenum type);
      ~Sync() override;
  
      void setLabel(EGLLabelKHR label) override;
      EGLLabelKHR getLabel() const override;
  
      const SyncID &id() const { return mId; }
  
      void onDestroy(const Display *display);
  
      Error initialize(const Display *display,
                       const gl::Context *context,
                       const SyncID &id,
                       const AttributeMap &attribs);
      Error clientWait(const Display *display,
                       const gl::Context *context,
                       EGLint flags,
                       EGLTime timeout,
                       EGLint *outResult);
      Error serverWait(const Display *display, const gl::Context *context, EGLint flags);
      Error signal(const Display *display, const gl::Context *context, EGLint mode);
      Error getStatus(const Display *display, EGLint *outStatus) const;
  
      Error copyMetalSharedEventANGLE(const Display *display, void **result) const;
      Error dupNativeFenceFD(const Display *display, EGLint *result) const;
  
      EGLenum getType() const { return mType; }
      const AttributeMap &getAttributeMap() const { return mAttributeMap; }
      EGLint getCondition() const { return mCondition; }
      EGLint getNativeFenceFD() const { return mNativeFenceFD; }
  
    private:
      std::unique_ptr<rx::EGLSyncImpl> mFence;
  
      EGLLabelKHR mLabel;
  
      SyncID mId;
      EGLenum mType;
      AttributeMap mAttributeMap;
      EGLint mCondition;
      EGLint mNativeFenceFD;
  };
  
  }  // namespace egl
  
  #endif  // LIBANGLE_FENCE_H_
  

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