kc3-lang/angle/src/common/MemoryBuffer.h

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• Hash : 3244736a
  Author :
  Date : 2017-06-28T14:53:52
  

  Use MemoryProgramCache.
  
  Add the member functions for saving and loading from the binary cache,
  and hook them into the Program class. Requires that the Renderer
  supports the program binary extension.
  
  BUG=angleproject:1897
  
  Change-Id: I2dc8d21b02da705ded58c5cd1943562c9c97c49b
  Reviewed-on: https://chromium-review.googlesource.com/522874
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/common/MemoryBuffer.h

• //
  // Copyright (c) 2014 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.
  //
  
  #ifndef COMMON_MEMORYBUFFER_H_
  #define COMMON_MEMORYBUFFER_H_
  
  #include "common/angleutils.h"
  
  #include <stdint.h>
  #include <cstddef>
  
  namespace angle
  {
  
  class MemoryBuffer final : NonCopyable
  {
    public:
      MemoryBuffer();
      ~MemoryBuffer();
  
      MemoryBuffer(MemoryBuffer &&other);
      MemoryBuffer &operator=(MemoryBuffer &&other);
  
      bool resize(size_t size);
      size_t size() const;
      bool empty() const { return mSize == 0; }
  
      const uint8_t *data() const;
      uint8_t *data();
  
      void fill(uint8_t datum);
  
    private:
      size_t mSize;
      uint8_t *mData;
  };
  
  class ScratchBuffer final : NonCopyable
  {
    public:
      // If we request a scratch buffer requesting a smaller size this many times, release and
      // recreate the scratch buffer. This ensures we don't have a degenerate case where we are stuck
      // hogging memory.
      ScratchBuffer(uint32_t lifetime);
      ~ScratchBuffer();
  
      // Returns true with a memory buffer of the requested size, or false on failure.
      bool get(size_t requestedSize, MemoryBuffer **memoryBufferOut);
  
      // Ticks the release counter for the scratch buffer. Also done implicitly in get().
      void tick();
  
      void clear();
  
    private:
      const uint32_t mLifetime;
      uint32_t mResetCounter;
      MemoryBuffer mScratchMemory;
  };
  
  }  // namespace angle
  
  #endif  // COMMON_MEMORYBUFFER_H_
  

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