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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "Canvas2DLayerManager.h"
#include "FakeWebGraphicsContext3D.h"
#include "GraphicsContext3DPrivate.h"
#include <gmock/gmock.h>
#include <gtest/gtest.h>
using namespace WebCore;
using testing::InSequence;
using testing::Return;
using testing::Test;
class FakeCanvas2DLayerBridge : public Canvas2DLayerBridge {
public:
FakeCanvas2DLayerBridge()
: Canvas2DLayerBridge(GraphicsContext3DPrivate::createGraphicsContextFromWebContext(adoptPtr(new WebKit::FakeWebGraphicsContext3D)), IntSize(1, 1), Deferred, 0)
, m_freeableBytes(0)
, m_freeMemoryIfPossibleCount(0)
, m_flushCount(0)
{
}
void fakeFreeableBytes(size_t size)
{
m_freeableBytes = size;
}
virtual size_t freeMemoryIfPossible(size_t size) OVERRIDE
{
m_freeMemoryIfPossibleCount++;
size_t bytesFreed = size < m_freeableBytes ? size : m_freeableBytes;
m_freeableBytes -= bytesFreed;
if (bytesFreed)
Canvas2DLayerManager::get().layerAllocatedStorageChanged(this, -((intptr_t)bytesFreed));
m_bytesAllocated -= bytesFreed;
return bytesFreed;
}
virtual void flush() OVERRIDE
{
m_flushCount++;
}
public:
size_t m_freeableBytes;
int m_freeMemoryIfPossibleCount;
int m_flushCount;
};
class Canvas2DLayerManagerTest : public Test {
protected:
void storageAllocationTrackingTest()
{
Canvas2DLayerManager& manager = Canvas2DLayerManager::get();
manager.init(10, 10);
{
FakeCanvas2DLayerBridge layer1;
EXPECT_EQ((size_t)0, manager.m_bytesAllocated);
layer1.storageAllocatedForRecordingChanged(1);
EXPECT_EQ((size_t)1, manager.m_bytesAllocated);
// Test allocation increase
layer1.storageAllocatedForRecordingChanged(2);
EXPECT_EQ((size_t)2, manager.m_bytesAllocated);
// Test allocation decrease
layer1.storageAllocatedForRecordingChanged(1);
EXPECT_EQ((size_t)1, manager.m_bytesAllocated);
{
FakeCanvas2DLayerBridge layer2;
EXPECT_EQ((size_t)1, manager.m_bytesAllocated);
// verify multi-layer allocation tracking
layer2.storageAllocatedForRecordingChanged(2);
EXPECT_EQ((size_t)3, manager.m_bytesAllocated);
}
// Verify tracking after destruction
EXPECT_EQ((size_t)1, manager.m_bytesAllocated);
}
}
void evictionTest()
{
Canvas2DLayerManager& manager = Canvas2DLayerManager::get();
manager.init(10, 5);
FakeCanvas2DLayerBridge layer;
layer.fakeFreeableBytes(10);
layer.storageAllocatedForRecordingChanged(8); // under the max
EXPECT_EQ(0, layer.m_freeMemoryIfPossibleCount);
layer.storageAllocatedForRecordingChanged(12); // over the max
EXPECT_EQ(1, layer.m_freeMemoryIfPossibleCount);
EXPECT_EQ((size_t)3, layer.m_freeableBytes);
EXPECT_EQ(0, layer.m_flushCount); // eviction succeeded without triggering a flush
EXPECT_EQ((size_t)5, layer.bytesAllocated());
}
void flushEvictionTest()
{
Canvas2DLayerManager& manager = Canvas2DLayerManager::get();
manager.init(10, 5);
FakeCanvas2DLayerBridge layer;
layer.fakeFreeableBytes(1); // Not enough freeable bytes, will cause aggressive eviction by flushing
layer.storageAllocatedForRecordingChanged(8); // under the max
EXPECT_EQ(0, layer.m_freeMemoryIfPossibleCount);
layer.storageAllocatedForRecordingChanged(12); // over the max
EXPECT_EQ(2, layer.m_freeMemoryIfPossibleCount); // Two tries, one before flush, one after flush
EXPECT_EQ((size_t)0, layer.m_freeableBytes);
EXPECT_EQ(1, layer.m_flushCount); // flush was attempted
EXPECT_EQ((size_t)11, layer.bytesAllocated()); // flush drops the layer from manager's tracking list
EXPECT_FALSE(manager.isInList(&layer));
}
};
namespace {
TEST_F(Canvas2DLayerManagerTest, testStorageAllocationTracking)
{
storageAllocationTrackingTest();
}
TEST_F(Canvas2DLayerManagerTest, testEviction)
{
evictionTest();
}
TEST_F(Canvas2DLayerManagerTest, testFlushEviction)
{
flushEvictionTest();
}
} // namespace
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