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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "mojo/services/gles2/mojo_buffer_backing.h"
      6 
      7 #include "base/logging.h"
      8 
      9 namespace mojo {
     10 namespace gles2 {
     11 
     12 MojoBufferBacking::MojoBufferBacking(mojo::ScopedSharedBufferHandle handle,
     13                                      void* memory,
     14                                      size_t size)
     15     : handle_(handle.Pass()), memory_(memory), size_(size) {}
     16 
     17 MojoBufferBacking::~MojoBufferBacking() { mojo::UnmapBuffer(memory_); }
     18 
     19 // static
     20 scoped_ptr<gpu::BufferBacking> MojoBufferBacking::Create(
     21     mojo::ScopedSharedBufferHandle handle,
     22     size_t size) {
     23   void* memory = NULL;
     24   MojoResult result = mojo::MapBuffer(
     25       handle.get(), 0, size, &memory, MOJO_MAP_BUFFER_FLAG_NONE);
     26   if (result != MOJO_RESULT_OK)
     27     return scoped_ptr<BufferBacking>();
     28   DCHECK(memory);
     29   return scoped_ptr<BufferBacking>(
     30       new MojoBufferBacking(handle.Pass(), memory, size));
     31 }
     32 void* MojoBufferBacking::GetMemory() const { return memory_; }
     33 size_t MojoBufferBacking::GetSize() const { return size_; }
     34 
     35 }  // namespace gles2
     36 }  // namespace mojo
     37