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Viewing changes to Source/WebKit/chromium/tests/Canvas2DLayerManagerTest.cpp

  • Committer: Package Import Robot
  • Author(s): Jonathan Riddell
  • Date: 2013-02-18 14:24:18 UTC
  • Revision ID: package-import@ubuntu.com-20130218142418-eon0jmjg3nj438uy
Tags: upstream-2.3
Import upstream version 2.3

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Source/WebKit/chromium/tests/Canvas2DLayerManagerTest.cpp
 
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/*
 
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 * Copyright (C) 2012 Google Inc. All rights reserved.
 
3
 *
 
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 * Redistribution and use in source and binary forms, with or without
 
5
 * modification, are permitted provided that the following conditions
 
6
 * are met:
 
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 * 1.  Redistributions of source code must retain the above copyright
 
8
 *     notice, this list of conditions and the following disclaimer.
 
9
 * 2.  Redistributions in binary form must reproduce the above copyright
 
10
 *     notice, this list of conditions and the following disclaimer in the
 
11
 *     documentation and/or other materials provided with the distribution.
 
12
 *
 
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 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
 
14
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 
15
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 
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 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 
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 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 
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 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 
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 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 
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 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
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 */
 
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#include "config.h"
 
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#include "Canvas2DLayerManager.h"
 
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#include "FakeWebGraphicsContext3D.h"
 
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#include "GraphicsContext3DPrivate.h"
 
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#include <gmock/gmock.h>
 
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#include <gtest/gtest.h>
 
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#include <public/Platform.h>
 
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#include <public/WebThread.h>
 
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using namespace WebCore;
 
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using testing::InSequence;
 
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using testing::Return;
 
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using testing::Test;
 
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class FakeCanvas2DLayerBridge : public Canvas2DLayerBridge {
 
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public:
 
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    FakeCanvas2DLayerBridge() 
 
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        : Canvas2DLayerBridge(GraphicsContext3DPrivate::createGraphicsContextFromWebContext(adoptPtr(new WebKit::FakeWebGraphicsContext3D)), IntSize(1, 1), Deferred, 0)
 
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        , m_freeableBytes(0)
 
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        , m_freeMemoryIfPossibleCount(0)
 
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        , m_flushCount(0)
 
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    {
 
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    }
 
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    virtual size_t storageAllocatedForRecording() OVERRIDE
 
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    {
 
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        // Because the fake layer has no canvas to query, just
 
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        // return status quo. Allocation changes that would normally be
 
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        // initiated by the canvas can be faked by invoking
 
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        // storageAllocatedForRecordingChanged directly from the test code.
 
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        return m_bytesAllocated;
 
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    }
 
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    void fakeFreeableBytes(size_t size)
 
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    {
 
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        m_freeableBytes = size;
 
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    }
 
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    virtual size_t freeMemoryIfPossible(size_t size) OVERRIDE
 
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    {
 
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        m_freeMemoryIfPossibleCount++;
 
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        size_t bytesFreed = size < m_freeableBytes ? size : m_freeableBytes;
 
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        m_freeableBytes -= bytesFreed;
 
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        if (bytesFreed)
 
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            Canvas2DLayerManager::get().layerAllocatedStorageChanged(this, -((intptr_t)bytesFreed));
 
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        m_bytesAllocated -= bytesFreed;
 
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        return bytesFreed;
 
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    }
 
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    virtual void flush() OVERRIDE
 
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    {
 
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        flushedDrawCommands();
 
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        m_flushCount++;
 
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    }
 
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public:
 
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    size_t m_freeableBytes;
 
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    int m_freeMemoryIfPossibleCount;
 
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    int m_flushCount;
 
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};
 
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class Canvas2DLayerManagerTest : public Test {
 
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protected:
 
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    void storageAllocationTrackingTest()
 
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    {
 
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        Canvas2DLayerManager& manager = Canvas2DLayerManager::get();
 
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        manager.init(10, 10);
 
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        {
 
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            FakeCanvas2DLayerBridge layer1;
 
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            EXPECT_EQ((size_t)0, manager.m_bytesAllocated);
 
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            layer1.storageAllocatedForRecordingChanged(1);
 
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            EXPECT_EQ((size_t)1, manager.m_bytesAllocated);
 
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            // Test allocation increase
 
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            layer1.storageAllocatedForRecordingChanged(2);
 
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            EXPECT_EQ((size_t)2, manager.m_bytesAllocated);
 
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            // Test allocation decrease
 
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            layer1.storageAllocatedForRecordingChanged(1);
 
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            EXPECT_EQ((size_t)1, manager.m_bytesAllocated);
 
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            {
 
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                FakeCanvas2DLayerBridge layer2;
 
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                EXPECT_EQ((size_t)1, manager.m_bytesAllocated);
 
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                // verify multi-layer allocation tracking
 
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                layer2.storageAllocatedForRecordingChanged(2);
 
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                EXPECT_EQ((size_t)3, manager.m_bytesAllocated);
 
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            }
 
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            // Verify tracking after destruction
 
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            EXPECT_EQ((size_t)1, manager.m_bytesAllocated);
 
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        }
 
116
    }
 
117
 
 
118
    void evictionTest()
 
119
    {
 
120
        Canvas2DLayerManager& manager = Canvas2DLayerManager::get();
 
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        manager.init(10, 5);
 
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        FakeCanvas2DLayerBridge layer;
 
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        layer.fakeFreeableBytes(10);
 
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        layer.storageAllocatedForRecordingChanged(8); // under the max
 
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        EXPECT_EQ(0, layer.m_freeMemoryIfPossibleCount);
 
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        layer.storageAllocatedForRecordingChanged(12); // over the max
 
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        EXPECT_EQ(1, layer.m_freeMemoryIfPossibleCount);
 
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        EXPECT_EQ((size_t)3, layer.m_freeableBytes);
 
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        EXPECT_EQ(0, layer.m_flushCount); // eviction succeeded without triggering a flush
 
130
        EXPECT_EQ((size_t)5, layer.bytesAllocated());
 
131
    }
 
132
 
 
133
    void flushEvictionTest()
 
134
    {
 
135
        Canvas2DLayerManager& manager = Canvas2DLayerManager::get();
 
136
        manager.init(10, 5);
 
137
        FakeCanvas2DLayerBridge layer;
 
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        layer.fakeFreeableBytes(1); // Not enough freeable bytes, will cause aggressive eviction by flushing
 
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        layer.storageAllocatedForRecordingChanged(8); // under the max
 
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        EXPECT_EQ(0, layer.m_freeMemoryIfPossibleCount);
 
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        layer.storageAllocatedForRecordingChanged(12); // over the max
 
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        EXPECT_EQ(2, layer.m_freeMemoryIfPossibleCount); // Two tries, one before flush, one after flush
 
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        EXPECT_EQ((size_t)0, layer.m_freeableBytes);
 
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        EXPECT_EQ(1, layer.m_flushCount); // flush was attempted
 
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        EXPECT_EQ((size_t)11, layer.bytesAllocated()); // flush drops the layer from manager's tracking list
 
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        EXPECT_FALSE(manager.isInList(&layer));
 
147
    }
 
148
 
 
149
    void doDeferredFrameTestTask(FakeCanvas2DLayerBridge* layer, bool skipCommands)
 
150
    {
 
151
        EXPECT_FALSE(Canvas2DLayerManager::get().m_taskObserverActive);
 
152
        layer->contextAcquired();
 
153
        layer->storageAllocatedForRecordingChanged(1);
 
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        EXPECT_TRUE(Canvas2DLayerManager::get().m_taskObserverActive);
 
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        if (skipCommands) {
 
156
            layer->contextAcquired();
 
157
            layer->storageAllocatedForRecordingChanged(0);
 
158
            layer->skippedPendingDrawCommands();
 
159
        }
 
160
        WebKit::Platform::current()->currentThread()->exitRunLoop();
 
161
    }
 
162
 
 
163
    class DeferredFrameTestTask : public WebKit::WebThread::Task {
 
164
    public:
 
165
        DeferredFrameTestTask(Canvas2DLayerManagerTest* test, FakeCanvas2DLayerBridge* layer, bool skipCommands)
 
166
        {
 
167
            m_test = test;
 
168
            m_layer = layer;
 
169
            m_skipCommands = skipCommands;
 
170
        }
 
171
 
 
172
        virtual void run() OVERRIDE
 
173
        {
 
174
            m_test->doDeferredFrameTestTask(m_layer, m_skipCommands);
 
175
        }
 
176
    private:
 
177
        Canvas2DLayerManagerTest* m_test;
 
178
        FakeCanvas2DLayerBridge* m_layer;
 
179
        bool m_skipCommands;
 
180
    };
 
181
 
 
182
    void deferredFrameTest()
 
183
    {
 
184
        Canvas2DLayerManager::get().init(10, 10);
 
185
        FakeCanvas2DLayerBridge fakeLayer;
 
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        WebKit::Platform::current()->currentThread()->postTask(new DeferredFrameTestTask(this, &fakeLayer, true));
 
187
        WebKit::Platform::current()->currentThread()->enterRunLoop();
 
188
        // Verify that didProcessTask was called upon completion
 
189
        EXPECT_FALSE(Canvas2DLayerManager::get().m_taskObserverActive);
 
190
        // Verify that no flush was performed because frame is fresh
 
191
        EXPECT_EQ(0, fakeLayer.m_flushCount);
 
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193
        // Verify that no flushes are triggered as long as frame are fresh
 
194
        WebKit::Platform::current()->currentThread()->postTask(new DeferredFrameTestTask(this, &fakeLayer, true));
 
195
        WebKit::Platform::current()->currentThread()->enterRunLoop();
 
196
        EXPECT_FALSE(Canvas2DLayerManager::get().m_taskObserverActive);
 
197
        EXPECT_EQ(0, fakeLayer.m_flushCount);
 
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199
        WebKit::Platform::current()->currentThread()->postTask(new DeferredFrameTestTask(this, &fakeLayer, true));
 
200
        WebKit::Platform::current()->currentThread()->enterRunLoop();
 
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        EXPECT_FALSE(Canvas2DLayerManager::get().m_taskObserverActive);
 
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        EXPECT_EQ(0, fakeLayer.m_flushCount);
 
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204
        // Verify that a flush is triggered every two frames when they are stale.
 
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        WebKit::Platform::current()->currentThread()->postTask(new DeferredFrameTestTask(this, &fakeLayer, false));
 
206
        WebKit::Platform::current()->currentThread()->enterRunLoop();
 
207
        EXPECT_FALSE(Canvas2DLayerManager::get().m_taskObserverActive);
 
208
        EXPECT_EQ(1, fakeLayer.m_flushCount);
 
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210
        WebKit::Platform::current()->currentThread()->postTask(new DeferredFrameTestTask(this, &fakeLayer, false));
 
211
        WebKit::Platform::current()->currentThread()->enterRunLoop();
 
212
        EXPECT_FALSE(Canvas2DLayerManager::get().m_taskObserverActive);
 
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        EXPECT_EQ(1, fakeLayer.m_flushCount);
 
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215
        WebKit::Platform::current()->currentThread()->postTask(new DeferredFrameTestTask(this, &fakeLayer, false));
 
216
        WebKit::Platform::current()->currentThread()->enterRunLoop();
 
217
        EXPECT_FALSE(Canvas2DLayerManager::get().m_taskObserverActive);
 
218
        EXPECT_EQ(2, fakeLayer.m_flushCount);
 
219
 
 
220
        WebKit::Platform::current()->currentThread()->postTask(new DeferredFrameTestTask(this, &fakeLayer, false));
 
221
        WebKit::Platform::current()->currentThread()->enterRunLoop();
 
222
        EXPECT_FALSE(Canvas2DLayerManager::get().m_taskObserverActive);
 
223
        EXPECT_EQ(2, fakeLayer.m_flushCount);
 
224
    }
 
225
};
 
226
 
 
227
namespace {
 
228
 
 
229
TEST_F(Canvas2DLayerManagerTest, testStorageAllocationTracking)
 
230
{
 
231
    storageAllocationTrackingTest();
 
232
}
 
233
 
 
234
TEST_F(Canvas2DLayerManagerTest, testEviction)
 
235
{
 
236
    evictionTest();
 
237
}
 
238
 
 
239
TEST_F(Canvas2DLayerManagerTest, testFlushEviction)
 
240
{
 
241
    flushEvictionTest();
 
242
}
 
243
 
 
244
TEST_F(Canvas2DLayerManagerTest, testDeferredFrame)
 
245
{
 
246
    deferredFrameTest();
 
247
}
 
248
 
 
249
} // namespace
 
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