cc: Set the mapped memory reclaim limit for the renderer compositor on Android

cc/debug/test_web_graphics_context_3d.cc

 // Copyright 2013 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.
 
 #include "cc/debug/test_web_graphics_context_3d.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/bind.h"
@@ skipping 56 matching lines @@
       times_gen_mailbox_succeeds_(-1),
       context_lost_(false),
       times_map_image_chromium_succeeds_(-1),
       times_map_buffer_chromium_succeeds_(-1),
       context_lost_callback_(NULL),
       swap_buffers_callback_(NULL),
       max_texture_size_(2048),
       width_(0),
       height_(0),
       bound_buffer_(0),
-      weak_ptr_factory_(this) {
+      weak_ptr_factory_(this),
+      transfer_buffer_memory_used_bytes_(0) {
   CreateNamespace();
   test_capabilities_.swapbuffers_complete_callback = true;
 }
 
 TestWebGraphicsContext3D::TestWebGraphicsContext3D(
     const WebGraphicsContext3D::Attributes& attributes)
     : FakeWebGraphicsContext3D(),
       context_id_(s_context_id++),
       attributes_(attributes),
       times_make_current_succeeds_(-1),
@@ skipping 390 matching lines @@
                                           const void* data,
                                           WebKit::WGC3Denum usage) {
   base::AutoLock lock(namespace_->lock);
   base::ScopedPtrHashMap<unsigned, Buffer>& buffers = namespace_->buffers;
   DCHECK_GT(buffers.count(bound_buffer_), 0u);
   DCHECK_EQ(target, buffers.get(bound_buffer_)->target);
   if (context_lost_) {
     buffers.get(bound_buffer_)->pixels.reset();
     return;
   }
+  if (target == GL_PIXEL_UNPACK_TRANSFER_BUFFER_CHROMIUM)
+    transfer_buffer_memory_used_bytes_ += size;

[reveman, 2013/09/06 22:28:27]

This is not going to do the right thing if the buffer is redefined.

I recommend removing the |transfer_buffer_memory_used_bytes_| state and track
the size of each buffer in the "Buffer" struct.
GetTransferBufferMemoryUsedBytes() can just iterate over all buffers..

[kaanb, 2013/09/07 01:30:31]

Done. After this change the number returned by
GetTransferBufferMemoryUsedBytes() went down to 2MB from 40MB.

+
   buffers.get(bound_buffer_)->pixels.reset(new uint8[size]);
   if (data != NULL)
     memcpy(buffers.get(bound_buffer_)->pixels.get(), data, size);
 }
 
 void* TestWebGraphicsContext3D::mapBufferCHROMIUM(WebKit::WGC3Denum target,
                                                   WebKit::WGC3Denum access) {
   base::AutoLock lock(namespace_->lock);
   base::ScopedPtrHashMap<unsigned, Buffer>& buffers = namespace_->buffers;
   DCHECK_GT(buffers.count(bound_buffer_), 0u);
@@ skipping 104 matching lines @@
 
 TestWebGraphicsContext3D::Buffer::Buffer() : target(0) {}
 
 TestWebGraphicsContext3D::Buffer::~Buffer() {}
 
 TestWebGraphicsContext3D::Image::Image() {}
 
 TestWebGraphicsContext3D::Image::~Image() {}
 
 }  // namespace cc