kc3-lang/angle/src/libANGLE/Thread.cpp

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• Hash : 7b8f3c9b
  Author :
  Date : 2016-11-10T10:42:48
  

  Encapsulate the thread local storage into an egl::Thread class.
  
  Instead of having separate GetGlobal* functions, interact with the global
  objects through a single Thread object.  This reduces the number of TLS
  lookups in many EGL functions and allows the Thread object to be passed
  down to other objects if needed.
  
  BUG=angleproject:1618
  
  Change-Id: I1f9a89e8899d637633f4e91fda0e38ac308dd020
  Reviewed-on: https://chromium-review.googlesource.com/409637
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Commit-Queue: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/Thread.cpp

• //
  // Copyright(c) 2016 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.
  //
  
  // Thread.cpp : Defines the Thread class which represents a global EGL thread.
  
  #include "libANGLE/Thread.h"
  
  #include "libANGLE/Context.h"
  #include "libANGLE/Error.h"
  
  namespace egl
  {
  Thread::Thread()
      : mError(EGL_SUCCESS),
        mAPI(EGL_OPENGL_ES_API),
        mDisplay(static_cast<egl::Display *>(EGL_NO_DISPLAY)),
        mDrawSurface(static_cast<egl::Surface *>(EGL_NO_SURFACE)),
        mReadSurface(static_cast<egl::Surface *>(EGL_NO_SURFACE)),
        mContext(static_cast<gl::Context *>(EGL_NO_CONTEXT))
  {
  }
  
  void Thread::setError(const Error &error)
  {
      mError = error.getCode();
  }
  
  EGLint Thread::getError() const
  {
      return mError;
  }
  
  void Thread::setAPI(EGLenum api)
  {
      mAPI = api;
  }
  
  EGLenum Thread::getAPI() const
  {
      return mAPI;
  }
  
  void Thread::setCurrent(Display *display,
                          Surface *drawSurface,
                          Surface *readSurface,
                          gl::Context *context)
  {
      mDisplay     = display;
      mDrawSurface = drawSurface;
      mReadSurface = readSurface;
      mContext     = context;
  }
  
  Display *Thread::getDisplay() const
  {
      return mDisplay;
  }
  
  Surface *Thread::getDrawSurface() const
  {
      return mDrawSurface;
  }
  
  Surface *Thread::getReadSurface() const
  {
      return mReadSurface;
  }
  
  gl::Context *Thread::getContext() const
  {
      return mContext;
  }
  
  gl::Context *Thread::getValidContext() const
  {
      if (mContext && mContext->isContextLost())
      {
          mContext->handleError(gl::Error(GL_OUT_OF_MEMORY, "Context has been lost."));
          return nullptr;
      }
  
      return mContext;
  }
  
  }  // namespace egl
  

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