/*
- * Copyright 2013 Facebook, Inc.
+ * Copyright 2014 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* limitations under the License.
*/
-#include "folly/io/Compression.h"
+#include <folly/io/Compression.h>
// Yes, tr1, as that's what gtest requires
#include <random>
#include <tr1/tuple>
#include <unordered_map>
+#include <boost/noncopyable.hpp>
#include <glog/logging.h>
#include <gtest/gtest.h>
-#include "folly/Benchmark.h"
-#include "folly/Hash.h"
-#include "folly/Random.h"
-#include "folly/io/IOBufQueue.h"
+#include <folly/Benchmark.h>
+#include <folly/Hash.h>
+#include <folly/Random.h>
+#include <folly/io/IOBufQueue.h>
namespace folly { namespace io { namespace test {
-constexpr size_t randomDataSizeLog2 = 27; // 128MiB
-constexpr size_t randomDataSize = size_t(1) << randomDataSizeLog2;
+class DataHolder : private boost::noncopyable {
+ public:
+ uint64_t hash(size_t size) const;
+ ByteRange data(size_t size) const;
-std::unique_ptr<uint8_t[]> randomData;
-std::unordered_map<uint64_t, uint64_t> hashes;
+ protected:
+ explicit DataHolder(size_t sizeLog2);
+ const size_t size_;
+ std::unique_ptr<uint8_t[]> data_;
+ mutable std::unordered_map<uint64_t, uint64_t> hashCache_;
+};
-uint64_t hashIOBuf(const IOBuf* buf) {
- uint64_t h = folly::hash::FNV_64_HASH_START;
- for (auto& range : *buf) {
- h = folly::hash::fnv64_buf(range.data(), range.size(), h);
- }
- return h;
+DataHolder::DataHolder(size_t sizeLog2)
+ : size_(size_t(1) << sizeLog2),
+ data_(new uint8_t[size_]) {
}
-uint64_t getRandomDataHash(uint64_t size) {
- auto p = hashes.find(size);
- if (p != hashes.end()) {
+uint64_t DataHolder::hash(size_t size) const {
+ CHECK_LE(size, size_);
+ auto p = hashCache_.find(size);
+ if (p != hashCache_.end()) {
return p->second;
}
- uint64_t h = folly::hash::fnv64_buf(randomData.get(), size);
- hashes[size] = h;
+ uint64_t h = folly::hash::fnv64_buf(data_.get(), size);
+ hashCache_[size] = h;
+ return h;
+}
+
+ByteRange DataHolder::data(size_t size) const {
+ CHECK_LE(size, size_);
+ return ByteRange(data_.get(), size);
+}
+
+uint64_t hashIOBuf(const IOBuf* buf) {
+ uint64_t h = folly::hash::FNV_64_HASH_START;
+ for (auto& range : *buf) {
+ h = folly::hash::fnv64_buf(range.data(), range.size(), h);
+ }
return h;
}
-void generateRandomData() {
- randomData.reset(new uint8_t[size_t(1) << randomDataSizeLog2]);
+class RandomDataHolder : public DataHolder {
+ public:
+ explicit RandomDataHolder(size_t sizeLog2);
+};
+RandomDataHolder::RandomDataHolder(size_t sizeLog2)
+ : DataHolder(sizeLog2) {
constexpr size_t numThreadsLog2 = 3;
constexpr size_t numThreads = size_t(1) << numThreadsLog2;
threads.reserve(numThreads);
for (size_t t = 0; t < numThreads; ++t) {
threads.emplace_back(
- [seed, t, numThreadsLog2] () {
+ [this, seed, t, numThreadsLog2, sizeLog2] () {
std::mt19937 rng(seed + t);
- size_t countLog2 = size_t(1) << (randomDataSizeLog2 - numThreadsLog2);
+ size_t countLog2 = size_t(1) << (sizeLog2 - numThreadsLog2);
size_t start = size_t(t) << countLog2;
for (size_t i = 0; i < countLog2; ++i) {
- randomData[start + i] = rng();
+ this->data_[start + i] = rng();
}
});
}
}
}
+class ConstantDataHolder : public DataHolder {
+ public:
+ explicit ConstantDataHolder(size_t sizeLog2);
+};
+
+ConstantDataHolder::ConstantDataHolder(size_t sizeLog2)
+ : DataHolder(sizeLog2) {
+ memset(data_.get(), 'a', size_);
+}
+
+constexpr size_t dataSizeLog2 = 27; // 128MiB
+RandomDataHolder randomDataHolder(dataSizeLog2);
+ConstantDataHolder constantDataHolder(dataSizeLog2);
+
+TEST(CompressionTestNeedsUncompressedLength, Simple) {
+ EXPECT_FALSE(getCodec(CodecType::NO_COMPRESSION)->needsUncompressedLength());
+ EXPECT_TRUE(getCodec(CodecType::LZ4)->needsUncompressedLength());
+ EXPECT_FALSE(getCodec(CodecType::SNAPPY)->needsUncompressedLength());
+ EXPECT_FALSE(getCodec(CodecType::ZLIB)->needsUncompressedLength());
+ EXPECT_FALSE(getCodec(CodecType::LZ4_VARINT_SIZE)->needsUncompressedLength());
+ EXPECT_TRUE(getCodec(CodecType::LZMA2)->needsUncompressedLength());
+ EXPECT_FALSE(getCodec(CodecType::LZMA2_VARINT_SIZE)
+ ->needsUncompressedLength());
+}
+
class CompressionTest : public testing::TestWithParam<
std::tr1::tuple<int, CodecType>> {
protected:
codec_ = getCodec(std::tr1::get<1>(tup));
}
+ void runSimpleTest(const DataHolder& dh);
+
uint64_t uncompressedLength_;
std::unique_ptr<Codec> codec_;
};
-TEST_P(CompressionTest, Simple) {
- auto original = IOBuf::wrapBuffer(randomData.get(), uncompressedLength_);
+void CompressionTest::runSimpleTest(const DataHolder& dh) {
+ auto original = IOBuf::wrapBuffer(dh.data(uncompressedLength_));
auto compressed = codec_->compress(original.get());
if (!codec_->needsUncompressedLength()) {
auto uncompressed = codec_->uncompress(compressed.get());
EXPECT_EQ(uncompressedLength_, uncompressed->computeChainDataLength());
- EXPECT_EQ(getRandomDataHash(uncompressedLength_),
- hashIOBuf(uncompressed.get()));
+ EXPECT_EQ(dh.hash(uncompressedLength_), hashIOBuf(uncompressed.get()));
}
{
auto uncompressed = codec_->uncompress(compressed.get(),
uncompressedLength_);
EXPECT_EQ(uncompressedLength_, uncompressed->computeChainDataLength());
- EXPECT_EQ(getRandomDataHash(uncompressedLength_),
- hashIOBuf(uncompressed.get()));
+ EXPECT_EQ(dh.hash(uncompressedLength_), hashIOBuf(uncompressed.get()));
}
}
+TEST_P(CompressionTest, RandomData) {
+ runSimpleTest(randomDataHolder);
+}
+
+TEST_P(CompressionTest, ConstantData) {
+ runSimpleTest(constantDataHolder);
+}
+
INSTANTIATE_TEST_CASE_P(
CompressionTest,
CompressionTest,
testing::Combine(
- testing::Values(0, 1, 12, 22, int(randomDataSizeLog2)),
+ testing::Values(0, 1, 12, 22, 25, 27),
testing::Values(CodecType::NO_COMPRESSION,
CodecType::LZ4,
CodecType::SNAPPY,
- CodecType::ZLIB)));
+ CodecType::ZLIB,
+ CodecType::LZ4_VARINT_SIZE,
+ CodecType::LZMA2,
+ CodecType::LZMA2_VARINT_SIZE)));
class CompressionCorruptionTest : public testing::TestWithParam<CodecType> {
protected:
codec_ = getCodec(GetParam());
}
+ void runSimpleTest(const DataHolder& dh);
+
std::unique_ptr<Codec> codec_;
};
-TEST_P(CompressionCorruptionTest, Simple) {
+void CompressionCorruptionTest::runSimpleTest(const DataHolder& dh) {
constexpr uint64_t uncompressedLength = 42;
- auto original = IOBuf::wrapBuffer(randomData.get(), uncompressedLength);
+ auto original = IOBuf::wrapBuffer(dh.data(uncompressedLength));
auto compressed = codec_->compress(original.get());
if (!codec_->needsUncompressedLength()) {
auto uncompressed = codec_->uncompress(compressed.get());
EXPECT_EQ(uncompressedLength, uncompressed->computeChainDataLength());
- EXPECT_EQ(getRandomDataHash(uncompressedLength),
- hashIOBuf(uncompressed.get()));
+ EXPECT_EQ(dh.hash(uncompressedLength), hashIOBuf(uncompressed.get()));
}
{
auto uncompressed = codec_->uncompress(compressed.get(),
uncompressedLength);
EXPECT_EQ(uncompressedLength, uncompressed->computeChainDataLength());
- EXPECT_EQ(getRandomDataHash(uncompressedLength),
- hashIOBuf(uncompressed.get()));
+ EXPECT_EQ(dh.hash(uncompressedLength), hashIOBuf(uncompressed.get()));
}
EXPECT_THROW(codec_->uncompress(compressed.get(), uncompressedLength + 1),
std::runtime_error);
}
+TEST_P(CompressionCorruptionTest, RandomData) {
+ runSimpleTest(randomDataHolder);
+}
+
+TEST_P(CompressionCorruptionTest, ConstantData) {
+ runSimpleTest(constantDataHolder);
+}
+
INSTANTIATE_TEST_CASE_P(
CompressionCorruptionTest,
CompressionCorruptionTest,
testing::InitGoogleTest(&argc, argv);
google::ParseCommandLineFlags(&argc, &argv, true);
- folly::io::test::generateRandomData(); // 4GB
-
auto ret = RUN_ALL_TESTS();
if (!ret) {
folly::runBenchmarksOnFlag();
projects / folly.git / blobdiff