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e0fd75b5ab
This caused us to lose our gn check certification. :( Turns out gn check was just ignoring all the header paths it didn't understand and so gn check passing for sky wasn't meaning much. I tried to straighten out some of the mess in this CL, but its going to take several more rounds of massaging before gn check passes again. On the bright side (almost) all of our headers are absolute now. Turns out my script (attached to the bug) didn't notice ../ includes but I'll fix that in the next patch. R=abarth@chromium.org BUG=435361 Review URL: https://codereview.chromium.org/746023002
338 lines
13 KiB
C++
338 lines
13 KiB
C++
/*
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* Copyright (C) 2014 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* 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
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "sky/engine/config.h"
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#include "sky/engine/platform/PurgeableVector.h"
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#include "sky/engine/platform/TestingPlatformSupport.h"
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#include "sky/engine/public/platform/WebDiscardableMemory.h"
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#include "sky/engine/wtf/Vector.h"
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#include <algorithm>
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#include <cstdlib>
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#include <gtest/gtest.h>
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using namespace blink;
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namespace {
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const size_t kTestSize = 32 * 1024;
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enum DiscardableMemorySupport {
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DontSupportDiscardableMemory,
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SupportDiscardableMemory,
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};
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class PurgeableVectorTestWithPlatformSupport : public testing::TestWithParam<DiscardableMemorySupport> {
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public:
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PurgeableVectorTestWithPlatformSupport() : m_testingPlatformSupport(makeTestingPlatformSupportConfig()) { }
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protected:
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bool isDiscardableMemorySupported() const { return GetParam() == SupportDiscardableMemory; }
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TestingPlatformSupport::Config makeTestingPlatformSupportConfig() const
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{
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TestingPlatformSupport::Config config;
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config.hasDiscardableMemorySupport = isDiscardableMemorySupported();
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return config;
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}
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PurgeableVector::PurgeableOption makePurgeableOption() const
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{
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return isDiscardableMemorySupported() ? PurgeableVector::Purgeable : PurgeableVector::NotPurgeable;
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}
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private:
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TestingPlatformSupport m_testingPlatformSupport;
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};
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TEST_P(PurgeableVectorTestWithPlatformSupport, grow)
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{
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PurgeableVector purgeableVector(makePurgeableOption());
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purgeableVector.grow(kTestSize);
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ASSERT_EQ(kTestSize, purgeableVector.size());
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// Make sure the underlying buffer was actually (re)allocated.
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memset(purgeableVector.data(), 0, purgeableVector.size());
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}
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TEST_P(PurgeableVectorTestWithPlatformSupport, clear)
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{
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Vector<char> testData(kTestSize);
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std::generate(testData.begin(), testData.end(), &std::rand);
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PurgeableVector purgeableVector(makePurgeableOption());
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purgeableVector.append(testData.data(), testData.size());
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EXPECT_EQ(testData.size(), purgeableVector.size());
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purgeableVector.clear();
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EXPECT_EQ(0U, purgeableVector.size());
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EXPECT_EQ(0, purgeableVector.data());
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}
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TEST_P(PurgeableVectorTestWithPlatformSupport, clearDoesNotResetLockCounter)
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{
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PurgeableVector purgeableVector(makePurgeableOption());
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purgeableVector.clear();
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EXPECT_TRUE(purgeableVector.isLocked());
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purgeableVector.unlock();
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EXPECT_FALSE(purgeableVector.isLocked());
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}
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TEST_P(PurgeableVectorTestWithPlatformSupport, reserveCapacityDoesNotChangeSize)
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{
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PurgeableVector purgeableVector(makePurgeableOption());
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EXPECT_EQ(0U, purgeableVector.size());
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purgeableVector.reserveCapacity(kTestSize);
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EXPECT_EQ(0U, purgeableVector.size());
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}
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TEST_P(PurgeableVectorTestWithPlatformSupport, multipleAppends)
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{
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Vector<char> testData(kTestSize);
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std::generate(testData.begin(), testData.end(), &std::rand);
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PurgeableVector purgeableVector(makePurgeableOption());
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// Force an allocation.
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const char kSmallString[] = "hello";
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purgeableVector.append(kSmallString, sizeof(kSmallString));
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const char* const data = purgeableVector.data();
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// Append all the testing data in 4 iterations. The |data| pointer should
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// have been changed at the end of the unit test due to reallocations.
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const size_t kIterationCount = 4;
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ASSERT_EQ(0U, testData.size() % kIterationCount);
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for (size_t i = 0; i < kIterationCount; ++i) {
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const char* const testDataStart = testData.data() + i * (testData.size() / kIterationCount);
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purgeableVector.append(testDataStart, testData.size() / kIterationCount);
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ASSERT_EQ((i + 1) * testData.size() / kIterationCount, purgeableVector.size() - sizeof(kSmallString));
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}
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ASSERT_EQ(sizeof(kSmallString) + testData.size(), purgeableVector.size());
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EXPECT_NE(data, purgeableVector.data());
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EXPECT_EQ(0, memcmp(purgeableVector.data() + sizeof(kSmallString), testData.data(), testData.size()));
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}
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TEST_P(PurgeableVectorTestWithPlatformSupport, multipleAppendsAfterReserveCapacity)
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{
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Vector<char> testData(kTestSize);
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std::generate(testData.begin(), testData.end(), &std::rand);
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PurgeableVector purgeableVector(makePurgeableOption());
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purgeableVector.reserveCapacity(testData.size());
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const char* const data = purgeableVector.data();
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// The |data| pointer should be unchanged at the end of the unit test
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// meaning that there should not have been any reallocation.
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const size_t kIterationCount = 4;
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ASSERT_EQ(0U, testData.size() % kIterationCount);
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for (size_t i = 0; i < kIterationCount; ++i) {
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const char* const testDataStart = testData.data() + i * (testData.size() / kIterationCount);
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purgeableVector.append(testDataStart, testData.size() / kIterationCount);
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ASSERT_EQ((i + 1) * testData.size() / kIterationCount, purgeableVector.size());
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}
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ASSERT_EQ(testData.size(), purgeableVector.size());
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EXPECT_EQ(data, purgeableVector.data());
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EXPECT_EQ(0, memcmp(purgeableVector.data(), testData.data(), testData.size()));
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}
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TEST_P(PurgeableVectorTestWithPlatformSupport, reserveCapacityUsesExactCapacityWhenVectorIsEmpty)
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{
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Vector<char> testData(kTestSize);
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std::generate(testData.begin(), testData.end(), &std::rand);
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PurgeableVector purgeableVector(makePurgeableOption());
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purgeableVector.reserveCapacity(kTestSize);
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const char* const data = purgeableVector.data();
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purgeableVector.append(testData.data(), testData.size());
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EXPECT_EQ(data, purgeableVector.data());
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EXPECT_EQ(0, memcmp(purgeableVector.data(), testData.data(), testData.size()));
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// This test is not reliable if the PurgeableVector uses a plain WTF::Vector
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// for storage, as it does if discardable memory is not supported; the vectors
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// capacity will always be expanded to fill the PartitionAlloc bucket.
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if (isDiscardableMemorySupported()) {
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// Appending one extra byte should cause a reallocation since the first
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// allocation happened while the purgeable vector was empty. This behavior
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// helps us guarantee that there is no memory waste on very small vectors
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// (which SharedBuffer requires).
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purgeableVector.append(testData.data(), 1);
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EXPECT_NE(data, purgeableVector.data());
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}
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}
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TEST_P(PurgeableVectorTestWithPlatformSupport, appendReservesCapacityIfNeeded)
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{
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Vector<char> testData(kTestSize);
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std::generate(testData.begin(), testData.end(), &std::rand);
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PurgeableVector purgeableVector(makePurgeableOption());
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// No reserveCapacity().
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ASSERT_FALSE(purgeableVector.data());
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purgeableVector.append(testData.data(), testData.size());
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ASSERT_EQ(testData.size(), purgeableVector.size());
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ASSERT_EQ(0, memcmp(purgeableVector.data(), testData.data(), testData.size()));
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}
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TEST_P(PurgeableVectorTestWithPlatformSupport, adopt)
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{
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Vector<char> testData(kTestSize);
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std::generate(testData.begin(), testData.end(), &std::rand);
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const Vector<char> testDataCopy(testData);
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const char* const testDataPtr = testData.data();
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PurgeableVector purgeableVector(makePurgeableOption());
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purgeableVector.adopt(testData);
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EXPECT_TRUE(testData.isEmpty());
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EXPECT_EQ(kTestSize, purgeableVector.size());
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ASSERT_EQ(0, memcmp(purgeableVector.data(), testDataCopy.data(), testDataCopy.size()));
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if (isDiscardableMemorySupported()) {
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// An extra discardable memory allocation + memcpy() should have happened.
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EXPECT_NE(testDataPtr, purgeableVector.data());
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} else {
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// Vector::swap() should have been used.
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EXPECT_EQ(testDataPtr, purgeableVector.data());
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}
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}
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TEST_P(PurgeableVectorTestWithPlatformSupport, adoptEmptyVector)
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{
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Vector<char> testData;
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PurgeableVector purgeableVector(makePurgeableOption());
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purgeableVector.adopt(testData);
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}
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TEST(PurgeableVectorTestWithPlatformSupport, adoptDiscardsPreviousData)
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{
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Vector<char> testData;
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std::generate(testData.begin(), testData.end(), &std::rand);
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PurgeableVector purgeableVector(PurgeableVector::NotPurgeable);
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static const char smallString[] = "hello";
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purgeableVector.append(smallString, sizeof(smallString));
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ASSERT_EQ(0, memcmp(purgeableVector.data(), smallString, sizeof(smallString)));
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purgeableVector.adopt(testData);
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EXPECT_EQ(testData.size(), purgeableVector.size());
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ASSERT_EQ(0, memcmp(purgeableVector.data(), testData.data(), testData.size()));
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}
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TEST_P(PurgeableVectorTestWithPlatformSupport, unlockWithoutHintAtConstruction)
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{
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Vector<char> testData(30000);
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std::generate(testData.begin(), testData.end(), &std::rand);
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unsigned length = testData.size();
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PurgeableVector purgeableVector(PurgeableVector::NotPurgeable);
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purgeableVector.append(testData.data(), length);
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ASSERT_EQ(length, purgeableVector.size());
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const char* data = purgeableVector.data();
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purgeableVector.unlock();
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// Note that the purgeable vector must be locked before calling data().
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const bool wasPurged = !purgeableVector.lock();
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if (isDiscardableMemorySupported()) {
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// The implementation of purgeable memory used for testing always purges data upon unlock().
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EXPECT_TRUE(wasPurged);
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}
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if (isDiscardableMemorySupported()) {
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// The data should have been moved from the heap-allocated vector to a purgeable buffer.
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ASSERT_NE(data, purgeableVector.data());
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} else {
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ASSERT_EQ(data, purgeableVector.data());
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}
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if (!wasPurged)
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ASSERT_EQ(0, memcmp(purgeableVector.data(), testData.data(), length));
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}
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TEST(PurgeableVectorTest, unlockOnEmptyPurgeableVector)
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{
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PurgeableVector purgeableVector;
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ASSERT_EQ(0U, purgeableVector.size());
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purgeableVector.unlock();
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ASSERT_FALSE(purgeableVector.isLocked());
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}
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TEST_P(PurgeableVectorTestWithPlatformSupport, unlockOnPurgeableVectorWithPurgeableHint)
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{
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Vector<char> testData(kTestSize);
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std::generate(testData.begin(), testData.end(), &std::rand);
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PurgeableVector purgeableVector;
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purgeableVector.append(testData.data(), kTestSize);
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const char* const data = purgeableVector.data();
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// unlock() should happen in place, i.e. without causing any reallocation.
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// Note that the instance must be locked when data() is called.
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purgeableVector.unlock();
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EXPECT_FALSE(purgeableVector.isLocked());
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purgeableVector.lock();
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EXPECT_TRUE(purgeableVector.isLocked());
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EXPECT_EQ(data, purgeableVector.data());
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}
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TEST_P(PurgeableVectorTestWithPlatformSupport, lockingUsesACounter)
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{
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Vector<char> testData(kTestSize);
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std::generate(testData.begin(), testData.end(), &std::rand);
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PurgeableVector purgeableVector(PurgeableVector::NotPurgeable);
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purgeableVector.append(testData.data(), testData.size());
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ASSERT_EQ(testData.size(), purgeableVector.size());
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ASSERT_TRUE(purgeableVector.isLocked()); // SharedBuffer is locked at creation.
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ASSERT_TRUE(purgeableVector.lock()); // Add an extra lock.
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ASSERT_TRUE(purgeableVector.isLocked());
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purgeableVector.unlock();
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ASSERT_TRUE(purgeableVector.isLocked());
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purgeableVector.unlock();
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ASSERT_FALSE(purgeableVector.isLocked());
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if (purgeableVector.lock())
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ASSERT_EQ(0, memcmp(purgeableVector.data(), testData.data(), testData.size()));
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}
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// Instantiates all the unit tests using the SharedBufferTestWithPlatformSupport fixture both with
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// and without discardable memory support.
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INSTANTIATE_TEST_CASE_P(testsWithPlatformSetUp, PurgeableVectorTestWithPlatformSupport,
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::testing::Values(DontSupportDiscardableMemory, SupportDiscardableMemory));
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} // namespace
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