| 1 | /* |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This source code is licensed under both the BSD-style license (found in the |
| 6 | * LICENSE file in the root directory of this source tree) and the GPLv2 (found |
| 7 | * in the COPYING file in the root directory of this source tree). |
| 8 | */ |
| 9 | #include "Pzstd.h" |
| 10 | extern "C" { |
| 11 | #include "datagen.h" |
| 12 | } |
| 13 | #include "test/RoundTrip.h" |
| 14 | #include "utils/ScopeGuard.h" |
| 15 | |
| 16 | #include <cstddef> |
| 17 | #include <cstdio> |
| 18 | #include <gtest/gtest.h> |
| 19 | #include <memory> |
| 20 | #include <random> |
| 21 | |
| 22 | using namespace std; |
| 23 | using namespace pzstd; |
| 24 | |
| 25 | TEST(Pzstd, SmallSizes) { |
| 26 | unsigned seed = std::random_device{}(); |
| 27 | std::fprintf(stderr, "Pzstd.SmallSizes seed: %u\n", seed); |
| 28 | std::mt19937 gen(seed); |
| 29 | |
| 30 | for (unsigned len = 1; len < 256; ++len) { |
| 31 | if (len % 16 == 0) { |
| 32 | std::fprintf(stderr, "%u / 16\n", len / 16); |
| 33 | } |
| 34 | std::string inputFile = std::tmpnam(nullptr); |
| 35 | auto guard = makeScopeGuard([&] { std::remove(inputFile.c_str()); }); |
| 36 | { |
| 37 | static uint8_t buf[256]; |
| 38 | RDG_genBuffer(buf, len, 0.5, 0.0, gen()); |
| 39 | auto fd = std::fopen(inputFile.c_str(), "wb"); |
| 40 | auto written = std::fwrite(buf, 1, len, fd); |
| 41 | std::fclose(fd); |
| 42 | ASSERT_EQ(written, len); |
| 43 | } |
| 44 | for (unsigned numThreads = 1; numThreads <= 2; ++numThreads) { |
| 45 | for (unsigned level = 1; level <= 4; level *= 4) { |
| 46 | auto errorGuard = makeScopeGuard([&] { |
| 47 | std::fprintf(stderr, "# threads: %u\n", numThreads); |
| 48 | std::fprintf(stderr, "compression level: %u\n", level); |
| 49 | }); |
| 50 | Options options; |
| 51 | options.overwrite = true; |
| 52 | options.inputFiles = {inputFile}; |
| 53 | options.numThreads = numThreads; |
| 54 | options.compressionLevel = level; |
| 55 | options.verbosity = 1; |
| 56 | ASSERT_TRUE(roundTrip(options)); |
| 57 | errorGuard.dismiss(); |
| 58 | } |
| 59 | } |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | TEST(Pzstd, LargeSizes) { |
| 64 | unsigned seed = std::random_device{}(); |
| 65 | std::fprintf(stderr, "Pzstd.LargeSizes seed: %u\n", seed); |
| 66 | std::mt19937 gen(seed); |
| 67 | |
| 68 | for (unsigned len = 1 << 20; len <= (1 << 24); len *= 2) { |
| 69 | std::string inputFile = std::tmpnam(nullptr); |
| 70 | auto guard = makeScopeGuard([&] { std::remove(inputFile.c_str()); }); |
| 71 | { |
| 72 | std::unique_ptr<uint8_t[]> buf(new uint8_t[len]); |
| 73 | RDG_genBuffer(buf.get(), len, 0.5, 0.0, gen()); |
| 74 | auto fd = std::fopen(inputFile.c_str(), "wb"); |
| 75 | auto written = std::fwrite(buf.get(), 1, len, fd); |
| 76 | std::fclose(fd); |
| 77 | ASSERT_EQ(written, len); |
| 78 | } |
| 79 | for (unsigned numThreads = 1; numThreads <= 16; numThreads *= 4) { |
| 80 | for (unsigned level = 1; level <= 4; level *= 4) { |
| 81 | auto errorGuard = makeScopeGuard([&] { |
| 82 | std::fprintf(stderr, "# threads: %u\n", numThreads); |
| 83 | std::fprintf(stderr, "compression level: %u\n", level); |
| 84 | }); |
| 85 | Options options; |
| 86 | options.overwrite = true; |
| 87 | options.inputFiles = {inputFile}; |
| 88 | options.numThreads = std::min(numThreads, options.numThreads); |
| 89 | options.compressionLevel = level; |
| 90 | options.verbosity = 1; |
| 91 | ASSERT_TRUE(roundTrip(options)); |
| 92 | errorGuard.dismiss(); |
| 93 | } |
| 94 | } |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | TEST(Pzstd, DISABLED_ExtremelyLargeSize) { |
| 99 | unsigned seed = std::random_device{}(); |
| 100 | std::fprintf(stderr, "Pzstd.ExtremelyLargeSize seed: %u\n", seed); |
| 101 | std::mt19937 gen(seed); |
| 102 | |
| 103 | std::string inputFile = std::tmpnam(nullptr); |
| 104 | auto guard = makeScopeGuard([&] { std::remove(inputFile.c_str()); }); |
| 105 | |
| 106 | { |
| 107 | // Write 4GB + 64 MB |
| 108 | constexpr size_t kLength = 1 << 26; |
| 109 | std::unique_ptr<uint8_t[]> buf(new uint8_t[kLength]); |
| 110 | auto fd = std::fopen(inputFile.c_str(), "wb"); |
| 111 | auto closeGuard = makeScopeGuard([&] { std::fclose(fd); }); |
| 112 | for (size_t i = 0; i < (1 << 6) + 1; ++i) { |
| 113 | RDG_genBuffer(buf.get(), kLength, 0.5, 0.0, gen()); |
| 114 | auto written = std::fwrite(buf.get(), 1, kLength, fd); |
| 115 | if (written != kLength) { |
| 116 | std::fprintf(stderr, "Failed to write file, skipping test\n"); |
| 117 | return; |
| 118 | } |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | Options options; |
| 123 | options.overwrite = true; |
| 124 | options.inputFiles = {inputFile}; |
| 125 | options.compressionLevel = 1; |
| 126 | if (options.numThreads == 0) { |
| 127 | options.numThreads = 1; |
| 128 | } |
| 129 | ASSERT_TRUE(roundTrip(options)); |
| 130 | } |
| 131 | |
| 132 | TEST(Pzstd, ExtremelyCompressible) { |
| 133 | std::string inputFile = std::tmpnam(nullptr); |
| 134 | auto guard = makeScopeGuard([&] { std::remove(inputFile.c_str()); }); |
| 135 | { |
| 136 | std::unique_ptr<uint8_t[]> buf(new uint8_t[10000]); |
| 137 | std::memset(buf.get(), 'a', 10000); |
| 138 | auto fd = std::fopen(inputFile.c_str(), "wb"); |
| 139 | auto written = std::fwrite(buf.get(), 1, 10000, fd); |
| 140 | std::fclose(fd); |
| 141 | ASSERT_EQ(written, 10000); |
| 142 | } |
| 143 | Options options; |
| 144 | options.overwrite = true; |
| 145 | options.inputFiles = {inputFile}; |
| 146 | options.numThreads = 1; |
| 147 | options.compressionLevel = 1; |
| 148 | ASSERT_TRUE(roundTrip(options)); |
| 149 | } |