gpu: Reuse transfer buffers more aggresively

gpu/command_buffer/client/query_tracker_unittest.cc

 // 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.
 
 // Tests for the QueryTracker.
 
 #include "gpu/command_buffer/client/query_tracker.h"
 
 #include <GLES2/gl2ext.h>
 #include "base/memory/scoped_ptr.h"
 #include "gpu/command_buffer/client/client_test_helper.h"
 #include "gpu/command_buffer/client/gles2_cmd_helper.h"
 #include "gpu/command_buffer/client/mapped_memory.h"
 #include "gpu/command_buffer/common/command_buffer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace gpu {
 namespace gles2 {
 
+namespace {
+void EmptyPoll() {
+}
+}
+
 class QuerySyncManagerTest : public testing::Test {
  protected:
   static const int32 kNumCommandEntries = 400;
   static const int32 kCommandBufferSizeBytes =
       kNumCommandEntries * sizeof(CommandBufferEntry);
 
   virtual void SetUp() {
     command_buffer_.reset(new MockClientCommandBuffer());
     helper_.reset(new GLES2CmdHelper(command_buffer_.get()));
     helper_->Initialize(kCommandBufferSizeBytes);
     mapped_memory_.reset(new MappedMemoryManager(
-        helper_.get(), MappedMemoryManager::kNoLimit));
+        helper_.get(), base::Bind(&EmptyPoll), MappedMemoryManager::kNoLimit));
     sync_manager_.reset(new QuerySyncManager(mapped_memory_.get()));
   }
 
   virtual void TearDown() {
     sync_manager_.reset();
     mapped_memory_.reset();
     helper_.reset();
     command_buffer_.reset();
   }
 
@@ skipping 33 matching lines @@
  protected:
   static const int32 kNumCommandEntries = 400;
   static const int32 kCommandBufferSizeBytes =
       kNumCommandEntries * sizeof(CommandBufferEntry);
 
   virtual void SetUp() {
     command_buffer_.reset(new MockClientCommandBuffer());
     helper_.reset(new GLES2CmdHelper(command_buffer_.get()));
     helper_->Initialize(kCommandBufferSizeBytes);
     mapped_memory_.reset(new MappedMemoryManager(
-        helper_.get(), MappedMemoryManager::kNoLimit));
+        helper_.get(), base::Bind(&EmptyPoll), MappedMemoryManager::kNoLimit));
     query_tracker_.reset(new QueryTracker(mapped_memory_.get()));
   }
 
   virtual void TearDown() {
     query_tracker_.reset();
     mapped_memory_.reset();
     helper_.reset();
     command_buffer_.reset();
   }
 
@@ skipping 104 matching lines @@
 
   // Check FreeCompletedQueries.
   query_tracker_->FreeCompletedQueries();
   EXPECT_EQ(0u, bucket->used_query_count);
 }
 
 }  // namespace gles2
 }  // namespace gpu