Add AsyncFlush when transferbuffer is > a certain size

gpu/command_buffer/client/transfer_buffer.h

 // Copyright (c) 2012 The Chromium 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 GPU_COMMAND_BUFFER_CLIENT_TRANSFER_BUFFER_H_
 #define GPU_COMMAND_BUFFER_CLIENT_TRANSFER_BUFFER_H_
 
 #include "../common/buffer.h"
 #include "../common/compiler_specific.h"
 #include "../common/gles2_cmd_utils.h"
@@ skipping 42 matching lines @@
 class TransferBufferInterface {
  public:
   TransferBufferInterface() { }
   virtual ~TransferBufferInterface() { }
 
   virtual bool Initialize(
       unsigned int buffer_size,
       unsigned int result_size,
       unsigned int min_buffer_size,
       unsigned int max_buffer_size,
-      unsigned int alignment) = 0;
+      unsigned int alignment,
+      unsigned int size_to_flush) = 0;
 
   virtual int GetShmId() = 0;
   virtual void* GetResultBuffer() = 0;
   virtual int GetResultOffset() = 0;
 
   virtual void Free() = 0;
 
   virtual bool HaveBuffer() const = 0;
 
   // Allocates up to size bytes.
@@ skipping 13 matching lines @@
  public:
   TransferBuffer(CommandBufferHelper* helper);
   virtual ~TransferBuffer();
 
   // Overridden from TransferBufferInterface.
   virtual bool Initialize(
       unsigned int buffer_size,
       unsigned int result_size,
       unsigned int min_buffer_size,
       unsigned int max_buffer_size,
-      unsigned int alignment) OVERRIDE;
+      unsigned int alignment,
+      unsigned int size_to_flush) OVERRIDE;
   virtual int GetShmId() OVERRIDE;
   virtual void* GetResultBuffer() OVERRIDE;
   virtual int GetResultOffset() OVERRIDE;
   virtual void Free() OVERRIDE;
   virtual bool HaveBuffer() const OVERRIDE;
   virtual void* AllocUpTo(
       unsigned int size, unsigned int* size_allocated) OVERRIDE;
   virtual void* Alloc(unsigned int size) OVERRIDE;
   virtual RingBuffer::Offset GetOffset(void* pointer) const OVERRIDE;
   virtual void FreePendingToken(void* p, unsigned int token) OVERRIDE;
@@ skipping 16 matching lines @@
 
   // min size we'll consider successful
   unsigned int min_buffer_size_;
 
   // max size we'll let the buffer grow
   unsigned int max_buffer_size_;
 
   // alignment for allocations
   unsigned int alignment_;
 
+  // Size at which to do an async flush. 0 = never.
+  unsigned int size_to_flush_;
+
+  // Number of bytes since we last flushed.
+  unsigned int bytes_since_last_flush_;
+
   // the current buffer.
   gpu::Buffer buffer_;
 
   // id of buffer. -1 = no buffer
   int32 buffer_id_;
 
   // address of result area
   void* result_buffer_;
 
   // offset to result area
@@ skipping 68 matching lines @@
   }
 
   unsigned int num_elements() const {
     return size() / sizeof(T);
   }
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_TRANSFER_BUFFER_H_