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// Copyright Epic Games, Inc. All Rights Reserved.
#include <zenstore/chunkedfile.h>
#include <zenutil/basicfile.h>
#include "chunking.h"
ZEN_THIRD_PARTY_INCLUDES_START
#include <tsl/robin_map.h>
#include <gsl/gsl-lite.hpp>
ZEN_THIRD_PARTY_INCLUDES_END
namespace zen {
namespace {
struct ChunkedHeader
{
static constexpr uint32_t ExpectedMagic = 0x646b6863; // chkd
static constexpr uint32_t CurrentVersion = 1;
uint32_t Magic = ExpectedMagic;
uint32_t Version = CurrentVersion;
uint32_t ChunkSequenceLength;
uint32_t ChunkHashCount;
uint64_t ChunkSequenceOffset;
uint64_t ChunkHashesOffset;
uint64_t RawSize = 0;
IoHash RawHash;
};
} // namespace
IoBuffer
SerializeChunkedInfo(const ChunkedInfo& Info)
{
size_t HeaderSize = RoundUp(sizeof(ChunkedHeader), 16) + RoundUp(sizeof(uint32_t) * Info.ChunkSequence.size(), 16) +
RoundUp(sizeof(IoHash) * Info.ChunkHashes.size(), 16);
IoBuffer HeaderData(HeaderSize);
ChunkedHeader Header;
Header.ChunkSequenceLength = gsl::narrow<uint32_t>(Info.ChunkSequence.size());
Header.ChunkHashCount = gsl::narrow<uint32_t>(Info.ChunkHashes.size());
Header.ChunkSequenceOffset = RoundUp(sizeof(ChunkedHeader), 16);
Header.ChunkHashesOffset = RoundUp(Header.ChunkSequenceOffset + sizeof(uint32_t) * Header.ChunkSequenceLength, 16);
Header.RawSize = Info.RawSize;
Header.RawHash = Info.RawHash;
MutableMemoryView WriteView = HeaderData.GetMutableView();
{
MutableMemoryView HeaderWriteView = WriteView.Left(sizeof(Header));
HeaderWriteView.CopyFrom(MemoryView(&Header, sizeof(Header)));
}
{
MutableMemoryView ChunkSequenceWriteView = WriteView.Mid(Header.ChunkSequenceOffset, sizeof(uint32_t) * Header.ChunkSequenceLength);
ChunkSequenceWriteView.CopyFrom(MemoryView(Info.ChunkSequence.data(), ChunkSequenceWriteView.GetSize()));
}
{
MutableMemoryView ChunksWriteView = WriteView.Mid(Header.ChunkHashesOffset, sizeof(IoHash) * Header.ChunkHashCount);
ChunksWriteView.CopyFrom(MemoryView(Info.ChunkHashes.data(), ChunksWriteView.GetSize()));
}
return HeaderData;
}
ChunkedInfo
DeserializeChunkedInfo(IoBuffer& Buffer)
{
MemoryView View = Buffer.GetView();
ChunkedHeader Header;
{
MutableMemoryView HeaderWriteView(&Header, sizeof(Header));
HeaderWriteView.CopyFrom(View.Left(sizeof(Header)));
}
if (Header.Magic != ChunkedHeader::ExpectedMagic)
{
return {};
}
if (Header.Version != ChunkedHeader::CurrentVersion)
{
return {};
}
ChunkedInfo Info;
Info.RawSize = Header.RawSize;
Info.RawHash = Header.RawHash;
Info.ChunkSequence.resize(Header.ChunkSequenceLength);
Info.ChunkHashes.resize(Header.ChunkHashCount);
{
MutableMemoryView ChunkSequenceWriteView(Info.ChunkSequence.data(), sizeof(uint32_t) * Header.ChunkSequenceLength);
ChunkSequenceWriteView.CopyFrom(View.Mid(Header.ChunkSequenceOffset, ChunkSequenceWriteView.GetSize()));
}
{
MutableMemoryView ChunksWriteView(Info.ChunkHashes.data(), sizeof(IoHash) * Header.ChunkHashCount);
ChunksWriteView.CopyFrom(View.Mid(Header.ChunkHashesOffset, ChunksWriteView.GetSize()));
}
return Info;
}
void
Reconstruct(const ChunkedInfo& Info, const std::filesystem::path& TargetPath, std::function<IoBuffer(const IoHash& ChunkHash)> GetChunk)
{
BasicFile Reconstructed;
Reconstructed.Open(TargetPath, BasicFile::Mode::kTruncate);
BasicFileWriter ReconstructedWriter(Reconstructed, 64 * 1024);
uint64_t Offset = 0;
for (uint32_t SequenceIndex : Info.ChunkSequence)
{
IoBuffer Chunk = GetChunk(Info.ChunkHashes[SequenceIndex]);
ReconstructedWriter.Write(Chunk.GetData(), Chunk.GetSize(), Offset);
Offset += Chunk.GetSize();
}
}
ChunkedInfoWithSource
ChunkData(BasicFile& RawData, uint64_t Offset, uint64_t Size, ChunkedParams Params)
{
ChunkedInfoWithSource Result;
tsl::robin_map<IoHash, uint32_t, IoHash::Hasher> FoundChunks;
ZenChunkHelper Chunker;
Chunker.SetUseThreshold(Params.UseThreshold);
Chunker.SetChunkSize(Params.MinSize, Params.MaxSize, Params.AvgSize);
size_t End = Offset + Size;
const size_t ScanBufferSize = 1u * 1024 * 1024; // (Params.MaxSize * 9) / 3;//1 * 1024 * 1024;
BasicFileBuffer RawBuffer(RawData, ScanBufferSize);
MemoryView SliceView = RawBuffer.MakeView(Min(End - Offset, ScanBufferSize), Offset);
ZEN_ASSERT(!SliceView.IsEmpty());
size_t SliceSize = SliceView.GetSize();
IoHashStream RawHashStream;
while (Offset < End)
{
size_t ScanLength = Chunker.ScanChunk(SliceView.GetData(), SliceSize);
if (ScanLength == ZenChunkHelper::kNoBoundaryFound)
{
if (Offset + SliceSize == End)
{
ScanLength = SliceSize;
}
else
{
SliceView = RawBuffer.MakeView(Min(End - Offset, ScanBufferSize), Offset);
SliceSize = SliceView.GetSize();
Chunker.Reset();
continue;
}
}
uint32_t ChunkLength = gsl::narrow<uint32_t>(ScanLength); // +HashedLength);
MemoryView ChunkView = SliceView.Left(ScanLength);
RawHashStream.Append(ChunkView);
IoHash ChunkHash = IoHash::HashBuffer(ChunkView);
SliceView.RightChopInline(ScanLength);
if (auto It = FoundChunks.find(ChunkHash); It != FoundChunks.end())
{
Result.Info.ChunkSequence.push_back(It->second);
}
else
{
uint32_t ChunkIndex = gsl::narrow<uint32_t>(Result.Info.ChunkHashes.size());
FoundChunks.insert_or_assign(ChunkHash, ChunkIndex);
Result.Info.ChunkHashes.push_back(ChunkHash);
Result.ChunkSources.push_back(ChunkSource{.Offset = Offset, .Size = ChunkLength});
Result.Info.ChunkSequence.push_back(ChunkIndex);
}
SliceSize = SliceView.GetSize();
Offset += ChunkLength;
}
Result.Info.RawSize = Size;
Result.Info.RawHash = RawHashStream.GetHash();
return Result;
}
} // namespace zen
#if ZEN_WITH_TESTS
# include <zencore/filesystem.h>
# include <zencore/fmtutils.h>
# include <zencore/iohash.h>
# include <zencore/logging.h>
# include <zencore/scopeguard.h>
# include <zencore/timer.h>
# include <zencore/testing.h>
# include <zencore/testutils.h>
# include <zencore/workthreadpool.h>
# include "chunking.h"
ZEN_THIRD_PARTY_INCLUDES_START
# include <tsl/robin_map.h>
# include <tsl/robin_set.h>
ZEN_THIRD_PARTY_INCLUDES_END
namespace zen {
# if 0
TEST_CASE("chunkedfile.findparams")
{
# if 1
DirectoryContent SourceContent1;
GetDirectoryContent("E:\\Temp\\ChunkingTestData\\31379208", DirectoryContent::IncludeFilesFlag, SourceContent1);
const std::vector<std::filesystem::path>& SourceFiles1 = SourceContent1.Files;
DirectoryContent SourceContent2;
GetDirectoryContent("E:\\Temp\\ChunkingTestData\\31379208_2", DirectoryContent::IncludeFilesFlag, SourceContent2);
const std::vector<std::filesystem::path>& SourceFiles2 = SourceContent2.Files;
# else
std::filesystem::path SourcePath1 =
"E:\\Temp\\ChunkingTestData\\31375996\\ShaderArchive-FortniteGame_Chunk10-PCD3D_SM6-PCD3D_SM6.ushaderbytecode";
std::filesystem::path SourcePath2 =
"E:\\Temp\\ChunkingTestData\\31379208\\ShaderArchive-FortniteGame_Chunk10-PCD3D_SM6-PCD3D_SM6.ushaderbytecode";
const std::vector<std::filesystem::path>& SourceFiles1 = {SourcePath1};
const std::vector<std::filesystem::path>& SourceFiles2 = {SourcePath2};
# endif
ChunkedParams Params[] = {ChunkedParams{.UseThreshold = false, .MinSize = 17280, .MaxSize = 139264, .AvgSize = 36340},
ChunkedParams{.UseThreshold = false, .MinSize = 15456, .MaxSize = 122880, .AvgSize = 35598},
ChunkedParams{.UseThreshold = false, .MinSize = 16848, .MaxSize = 135168, .AvgSize = 39030},
ChunkedParams{.UseThreshold = false, .MinSize = 14256, .MaxSize = 114688, .AvgSize = 36222},
ChunkedParams{.UseThreshold = false, .MinSize = 15744, .MaxSize = 126976, .AvgSize = 36600},
ChunkedParams{.UseThreshold = false, .MinSize = 15264, .MaxSize = 122880, .AvgSize = 35442},
ChunkedParams{.UseThreshold = false, .MinSize = 16464, .MaxSize = 131072, .AvgSize = 37950},
ChunkedParams{.UseThreshold = false, .MinSize = 15408, .MaxSize = 122880, .AvgSize = 38914},
ChunkedParams{.UseThreshold = false, .MinSize = 15408, .MaxSize = 122880, .AvgSize = 35556},
ChunkedParams{.UseThreshold = false, .MinSize = 15360, .MaxSize = 122880, .AvgSize = 35520},
ChunkedParams{.UseThreshold = false, .MinSize = 15312, .MaxSize = 122880, .AvgSize = 35478},
ChunkedParams{.UseThreshold = false, .MinSize = 16896, .MaxSize = 135168, .AvgSize = 39072},
ChunkedParams{.UseThreshold = false, .MinSize = 15360, .MaxSize = 122880, .AvgSize = 38880},
ChunkedParams{.UseThreshold = false, .MinSize = 15840, .MaxSize = 126976, .AvgSize = 36678},
ChunkedParams{.UseThreshold = false, .MinSize = 16800, .MaxSize = 135168, .AvgSize = 38994},
ChunkedParams{.UseThreshold = false, .MinSize = 15888, .MaxSize = 126976, .AvgSize = 36714},
ChunkedParams{.UseThreshold = false, .MinSize = 15792, .MaxSize = 126976, .AvgSize = 36636},
ChunkedParams{.UseThreshold = false, .MinSize = 14880, .MaxSize = 118784, .AvgSize = 37609},
ChunkedParams{.UseThreshold = false, .MinSize = 15936, .MaxSize = 126976, .AvgSize = 36756},
ChunkedParams{.UseThreshold = false, .MinSize = 15456, .MaxSize = 122880, .AvgSize = 38955},
ChunkedParams{.UseThreshold = false, .MinSize = 15984, .MaxSize = 126976, .AvgSize = 36792},
ChunkedParams{.UseThreshold = false, .MinSize = 14400, .MaxSize = 114688, .AvgSize = 36338},
ChunkedParams{.UseThreshold = false, .MinSize = 14832, .MaxSize = 118784, .AvgSize = 37568},
ChunkedParams{.UseThreshold = false, .MinSize = 16944, .MaxSize = 135168, .AvgSize = 39108},
ChunkedParams{.UseThreshold = false, .MinSize = 14352, .MaxSize = 114688, .AvgSize = 36297},
ChunkedParams{.UseThreshold = false, .MinSize = 14208, .MaxSize = 114688, .AvgSize = 36188},
ChunkedParams{.UseThreshold = false, .MinSize = 14448, .MaxSize = 114688, .AvgSize = 36372},
ChunkedParams{.UseThreshold = false, .MinSize = 13296, .MaxSize = 106496, .AvgSize = 36592},
ChunkedParams{.UseThreshold = false, .MinSize = 15264, .MaxSize = 122880, .AvgSize = 38805},
ChunkedParams{.UseThreshold = false, .MinSize = 14304, .MaxSize = 114688, .AvgSize = 36263},
ChunkedParams{.UseThreshold = false, .MinSize = 14784, .MaxSize = 118784, .AvgSize = 37534},
ChunkedParams{.UseThreshold = false, .MinSize = 15312, .MaxSize = 122880, .AvgSize = 38839},
ChunkedParams{.UseThreshold = false, .MinSize = 14256, .MaxSize = 114688, .AvgSize = 39360},
ChunkedParams{.UseThreshold = false, .MinSize = 13776, .MaxSize = 110592, .AvgSize = 37976},
ChunkedParams{.UseThreshold = false, .MinSize = 14736, .MaxSize = 118784, .AvgSize = 37493},
ChunkedParams{.UseThreshold = false, .MinSize = 14928, .MaxSize = 118784, .AvgSize = 37643},
ChunkedParams{.UseThreshold = false, .MinSize = 14448, .MaxSize = 114688, .AvgSize = 39504},
ChunkedParams{.UseThreshold = false, .MinSize = 13392, .MaxSize = 106496, .AvgSize = 36664},
ChunkedParams{.UseThreshold = false, .MinSize = 13872, .MaxSize = 110592, .AvgSize = 38048},
ChunkedParams{.UseThreshold = false, .MinSize = 14352, .MaxSize = 114688, .AvgSize = 39432},
ChunkedParams{.UseThreshold = false, .MinSize = 13200, .MaxSize = 106496, .AvgSize = 36520},
ChunkedParams{.UseThreshold = false, .MinSize = 17328, .MaxSize = 139264, .AvgSize = 36378},
ChunkedParams{.UseThreshold = false, .MinSize = 17376, .MaxSize = 139264, .AvgSize = 36421},
ChunkedParams{.UseThreshold = false, .MinSize = 17424, .MaxSize = 139264, .AvgSize = 36459},
ChunkedParams{.UseThreshold = false, .MinSize = 17472, .MaxSize = 139264, .AvgSize = 36502},
ChunkedParams{.UseThreshold = false, .MinSize = 17520, .MaxSize = 139264, .AvgSize = 36540},
ChunkedParams{.UseThreshold = false, .MinSize = 17808, .MaxSize = 143360, .AvgSize = 37423},
ChunkedParams{.UseThreshold = false, .MinSize = 17856, .MaxSize = 143360, .AvgSize = 37466},
ChunkedParams{.UseThreshold = false, .MinSize = 18000, .MaxSize = 143360, .AvgSize = 25834},
ChunkedParams{.UseThreshold = false, .MinSize = 18000, .MaxSize = 143360, .AvgSize = 21917},
ChunkedParams{.UseThreshold = false, .MinSize = 18000, .MaxSize = 143360, .AvgSize = 29751},
ChunkedParams{.UseThreshold = false, .MinSize = 18000, .MaxSize = 143360, .AvgSize = 33668},
ChunkedParams{.UseThreshold = false, .MinSize = 17952, .MaxSize = 143360, .AvgSize = 37547},
ChunkedParams{.UseThreshold = false, .MinSize = 17904, .MaxSize = 143360, .AvgSize = 37504},
ChunkedParams{.UseThreshold = false, .MinSize = 18336, .MaxSize = 147456, .AvgSize = 22371},
ChunkedParams{.UseThreshold = false, .MinSize = 18000, .MaxSize = 143360, .AvgSize = 37585},
ChunkedParams{.UseThreshold = false, .MinSize = 18336, .MaxSize = 147456, .AvgSize = 26406},
ChunkedParams{.UseThreshold = false, .MinSize = 18384, .MaxSize = 147456, .AvgSize = 26450},
ChunkedParams{.UseThreshold = false, .MinSize = 18528, .MaxSize = 147456, .AvgSize = 30615},
ChunkedParams{.UseThreshold = false, .MinSize = 18336, .MaxSize = 147456, .AvgSize = 30441},
ChunkedParams{.UseThreshold = false, .MinSize = 18384, .MaxSize = 147456, .AvgSize = 22417},
ChunkedParams{.UseThreshold = false, .MinSize = 18528, .MaxSize = 147456, .AvgSize = 22557},
ChunkedParams{.UseThreshold = false, .MinSize = 18432, .MaxSize = 147456, .AvgSize = 30528},
ChunkedParams{.UseThreshold = false, .MinSize = 18816, .MaxSize = 151552, .AvgSize = 27112},
ChunkedParams{.UseThreshold = false, .MinSize = 18528, .MaxSize = 147456, .AvgSize = 34644},
ChunkedParams{.UseThreshold = false, .MinSize = 18336, .MaxSize = 147456, .AvgSize = 34476},
ChunkedParams{.UseThreshold = false, .MinSize = 18816, .MaxSize = 151552, .AvgSize = 35408},
ChunkedParams{.UseThreshold = false, .MinSize = 18432, .MaxSize = 147456, .AvgSize = 38592},
ChunkedParams{.UseThreshold = false, .MinSize = 18384, .MaxSize = 147456, .AvgSize = 30483},
ChunkedParams{.UseThreshold = false, .MinSize = 18528, .MaxSize = 147456, .AvgSize = 26586},
ChunkedParams{.UseThreshold = false, .MinSize = 18432, .MaxSize = 147456, .AvgSize = 26496},
ChunkedParams{.UseThreshold = false, .MinSize = 18864, .MaxSize = 151552, .AvgSize = 31302},
ChunkedParams{.UseThreshold = false, .MinSize = 18384, .MaxSize = 147456, .AvgSize = 34516},
ChunkedParams{.UseThreshold = false, .MinSize = 18816, .MaxSize = 151552, .AvgSize = 22964},
ChunkedParams{.UseThreshold = false, .MinSize = 18864, .MaxSize = 151552, .AvgSize = 35448},
ChunkedParams{.UseThreshold = false, .MinSize = 18480, .MaxSize = 147456, .AvgSize = 38630},
ChunkedParams{.UseThreshold = false, .MinSize = 18864, .MaxSize = 151552, .AvgSize = 23010},
ChunkedParams{.UseThreshold = false, .MinSize = 18816, .MaxSize = 151552, .AvgSize = 31260},
ChunkedParams{.UseThreshold = false, .MinSize = 18480, .MaxSize = 147456, .AvgSize = 34600},
ChunkedParams{.UseThreshold = false, .MinSize = 18864, .MaxSize = 151552, .AvgSize = 27156},
ChunkedParams{.UseThreshold = false, .MinSize = 18480, .MaxSize = 147456, .AvgSize = 30570},
ChunkedParams{.UseThreshold = false, .MinSize = 18384, .MaxSize = 147456, .AvgSize = 38549},
ChunkedParams{.UseThreshold = false, .MinSize = 18480, .MaxSize = 147456, .AvgSize = 22510},
ChunkedParams{.UseThreshold = false, .MinSize = 18528, .MaxSize = 147456, .AvgSize = 38673},
ChunkedParams{.UseThreshold = false, .MinSize = 18432, .MaxSize = 147456, .AvgSize = 34560},
ChunkedParams{.UseThreshold = false, .MinSize = 18432, .MaxSize = 147456, .AvgSize = 22464},
ChunkedParams{.UseThreshold = false, .MinSize = 18480, .MaxSize = 147456, .AvgSize = 26540},
ChunkedParams{.UseThreshold = false, .MinSize = 18336, .MaxSize = 147456, .AvgSize = 38511},
ChunkedParams{.UseThreshold = false, .MinSize = 18912, .MaxSize = 151552, .AvgSize = 23057},
ChunkedParams{.UseThreshold = false, .MinSize = 18912, .MaxSize = 151552, .AvgSize = 27202},
ChunkedParams{.UseThreshold = false, .MinSize = 18912, .MaxSize = 151552, .AvgSize = 31347},
ChunkedParams{.UseThreshold = false, .MinSize = 18912, .MaxSize = 151552, .AvgSize = 35492},
ChunkedParams{.UseThreshold = false, .MinSize = 18960, .MaxSize = 151552, .AvgSize = 31389},
ChunkedParams{.UseThreshold = false, .MinSize = 18960, .MaxSize = 151552, .AvgSize = 27246},
ChunkedParams{.UseThreshold = false, .MinSize = 18960, .MaxSize = 151552, .AvgSize = 23103},
ChunkedParams{.UseThreshold = false, .MinSize = 18960, .MaxSize = 151552, .AvgSize = 35532},
ChunkedParams{.UseThreshold = false, .MinSize = 19008, .MaxSize = 151552, .AvgSize = 23150},
ChunkedParams{.UseThreshold = false, .MinSize = 19008, .MaxSize = 151552, .AvgSize = 27292},
ChunkedParams{.UseThreshold = false, .MinSize = 19008, .MaxSize = 151552, .AvgSize = 31434},
ChunkedParams{.UseThreshold = false, .MinSize = 19008, .MaxSize = 151552, .AvgSize = 35576},
ChunkedParams{.UseThreshold = false, .MinSize = 19056, .MaxSize = 151552, .AvgSize = 27336},
ChunkedParams{.UseThreshold = false, .MinSize = 19056, .MaxSize = 151552, .AvgSize = 23196},
ChunkedParams{.UseThreshold = false, .MinSize = 19056, .MaxSize = 151552, .AvgSize = 31476},
ChunkedParams{.UseThreshold = false, .MinSize = 19056, .MaxSize = 151552, .AvgSize = 35616},
ChunkedParams{.UseThreshold = false, .MinSize = 19344, .MaxSize = 155648, .AvgSize = 27862},
ChunkedParams{.UseThreshold = false, .MinSize = 19344, .MaxSize = 155648, .AvgSize = 32121},
ChunkedParams{.UseThreshold = false, .MinSize = 19344, .MaxSize = 155648, .AvgSize = 23603},
ChunkedParams{.UseThreshold = false, .MinSize = 19344, .MaxSize = 155648, .AvgSize = 36380},
ChunkedParams{.UseThreshold = false, .MinSize = 19392, .MaxSize = 155648, .AvgSize = 27908},
ChunkedParams{.UseThreshold = false, .MinSize = 19392, .MaxSize = 155648, .AvgSize = 23650},
ChunkedParams{.UseThreshold = false, .MinSize = 19392, .MaxSize = 155648, .AvgSize = 32166},
ChunkedParams{.UseThreshold = false, .MinSize = 19392, .MaxSize = 155648, .AvgSize = 36424},
ChunkedParams{.UseThreshold = false, .MinSize = 19440, .MaxSize = 155648, .AvgSize = 23696},
ChunkedParams{.UseThreshold = false, .MinSize = 19488, .MaxSize = 155648, .AvgSize = 32253},
ChunkedParams{.UseThreshold = false, .MinSize = 19440, .MaxSize = 155648, .AvgSize = 32208},
ChunkedParams{.UseThreshold = false, .MinSize = 19488, .MaxSize = 155648, .AvgSize = 23743},
ChunkedParams{.UseThreshold = false, .MinSize = 19536, .MaxSize = 155648, .AvgSize = 36548},
ChunkedParams{.UseThreshold = false, .MinSize = 19536, .MaxSize = 155648, .AvgSize = 28042},
ChunkedParams{.UseThreshold = false, .MinSize = 19536, .MaxSize = 155648, .AvgSize = 23789},
ChunkedParams{.UseThreshold = false, .MinSize = 19536, .MaxSize = 155648, .AvgSize = 32295},
ChunkedParams{.UseThreshold = false, .MinSize = 19488, .MaxSize = 155648, .AvgSize = 36508},
ChunkedParams{.UseThreshold = false, .MinSize = 19440, .MaxSize = 155648, .AvgSize = 27952},
ChunkedParams{.UseThreshold = false, .MinSize = 19488, .MaxSize = 155648, .AvgSize = 27998},
ChunkedParams{.UseThreshold = false, .MinSize = 19440, .MaxSize = 155648, .AvgSize = 36464}};
static const size_t ParamsCount = sizeof(Params) / sizeof(ChunkedParams);
std::vector<ChunkedInfoWithSource> Infos1(SourceFiles1.size());
std::vector<ChunkedInfoWithSource> Infos2(SourceFiles2.size());
WorkerThreadPool WorkerPool(32);
for (size_t I = 0; I < ParamsCount; I++)
{
for (int UseThreshold = 0; UseThreshold < 2; UseThreshold++)
{
Latch WorkLatch(1);
ChunkedParams Param = Params[I];
Param.UseThreshold = UseThreshold == 1;
Stopwatch Timer;
for (size_t F = 0; F < SourceFiles1.size(); F++)
{
WorkLatch.AddCount(1);
WorkerPool.ScheduleWork([&WorkLatch, F, Param, &SourceFiles1, &Infos1]() {
auto _ = MakeGuard([&WorkLatch]() { WorkLatch.CountDown(); });
BasicFile SourceData1;
SourceData1.Open(SourceFiles1[F], BasicFile::Mode::kRead);
Infos1[F] = ChunkData(SourceData1, 0, SourceData1.FileSize(), Param);
});
}
for (size_t F = 0; F < SourceFiles2.size(); F++)
{
WorkLatch.AddCount(1);
WorkerPool.ScheduleWork([&WorkLatch, F, Param, &SourceFiles2, &Infos2]() {
auto _ = MakeGuard([&WorkLatch]() { WorkLatch.CountDown(); });
BasicFile SourceData2;
SourceData2.Open(SourceFiles2[F], BasicFile::Mode::kRead);
Infos2[F] = ChunkData(SourceData2, 0, SourceData2.FileSize(), Param);
});
}
WorkLatch.CountDown();
WorkLatch.Wait();
uint64_t ChunkTimeMS = Timer.GetElapsedTimeMs();
uint64_t Raw1Size = 0;
tsl::robin_set<IoHash> Chunks1;
size_t ChunkedSize1 = 0;
for (size_t F = 0; F < SourceFiles1.size(); F++)
{
const ChunkedInfoWithSource& Info = Infos1[F];
Raw1Size += Info.Info.RawSize;
for (uint32_t Chunk1Index = 0; Chunk1Index < Info.Info.ChunkHashes.size(); ++Chunk1Index)
{
const IoHash ChunkHash = Info.Info.ChunkHashes[Chunk1Index];
if (Chunks1.insert(ChunkHash).second)
{
ChunkedSize1 += Info.ChunkSources[Chunk1Index].Size;
}
}
}
uint64_t Raw2Size = 0;
tsl::robin_set<IoHash> Chunks2;
size_t ChunkedSize2 = 0;
size_t DiffSize = 0;
for (size_t F = 0; F < SourceFiles2.size(); F++)
{
const ChunkedInfoWithSource& Info = Infos2[F];
Raw2Size += Info.Info.RawSize;
for (uint32_t Chunk2Index = 0; Chunk2Index < Info.Info.ChunkHashes.size(); ++Chunk2Index)
{
const IoHash ChunkHash = Info.Info.ChunkHashes[Chunk2Index];
if (Chunks2.insert(ChunkHash).second)
{
ChunkedSize2 += Info.ChunkSources[Chunk2Index].Size;
if (!Chunks1.contains(ChunkHash))
{
DiffSize += Info.ChunkSources[Chunk2Index].Size;
}
}
}
}
ZEN_INFO(
"Diff = {}, Chunks1 = {}, Chunks2 = {}, .UseThreshold = {}, .MinSize = {}, .MaxSize = {}, .AvgSize = {}, RawSize(1) = {}, "
"RawSize(2) = {}, "
"Saved(1) = {}, Saved(2) = {} in {}",
NiceBytes(DiffSize),
Chunks1.size(),
Chunks2.size(),
Param.UseThreshold,
Param.MinSize,
Param.MaxSize,
Param.AvgSize,
NiceBytes(Raw1Size),
NiceBytes(Raw2Size),
NiceBytes(Raw1Size - ChunkedSize1),
NiceBytes(Raw2Size - ChunkedSize2),
NiceTimeSpanMs(ChunkTimeMS));
}
}
# if 0
for (int64_t MinSizeBase = (12u * 1024u); MinSizeBase <= (32u * 1024u); MinSizeBase += 512)
{
for (int64_t Wiggle = -132; Wiggle < 126; Wiggle += 2)
{
// size_t MinSize = 7 * 1024 - 61; // (size_t)(MinSizeBase + Wiggle);
// size_t MaxSize = 16 * (7 * 1024); // 8 * 7 * 1024;// MinSizeBase * 6;
// size_t AvgSize = MaxSize / 2; // 4 * 7 * 1024;// MinSizeBase * 3;
size_t MinSize = (size_t)(MinSizeBase + Wiggle);
//for (size_t MaxSize = (MinSize * 4) - 768; MaxSize < (MinSize * 5) + 768; MaxSize += 64)
size_t MaxSize = 8u * MinSizeBase;
{
for (size_t AvgSize = (MaxSize - MinSize) / 32 + MinSize; AvgSize < (MaxSize - MinSize) / 4 + MinSize; AvgSize += (MaxSize - MinSize) / 32)
// size_t AvgSize = (MaxSize - MinSize) / 4 + MinSize;
{
WorkLatch.AddCount(1);
WorkerPool.ScheduleWork([&WorkLatch, MinSize, MaxSize, AvgSize, SourcePath1, SourcePath2]()
{
auto _ = MakeGuard([&WorkLatch]() { WorkLatch.CountDown(); });
ChunkedParams Params{ .UseThreshold = true, .MinSize = MinSize, .MaxSize = MaxSize, .AvgSize = AvgSize };
BasicFile SourceData1;
SourceData1.Open(SourcePath1, BasicFile::Mode::kRead);
BasicFile SourceData2;
SourceData2.Open(SourcePath2, BasicFile::Mode::kRead);
ChunkedInfoWithSource Info1 = ChunkData(SourceData1, Params);
ChunkedInfoWithSource Info2 = ChunkData(SourceData2, Params);
tsl::robin_set<IoHash> Chunks1;
Chunks1.reserve(Info1.Info.ChunkHashes.size());
Chunks1.insert(Info1.Info.ChunkHashes.begin(), Info1.Info.ChunkHashes.end());
size_t ChunkedSize1 = 0;
for (uint32_t Chunk1Index = 0; Chunk1Index < Info1.Info.ChunkHashes.size(); ++Chunk1Index)
{
ChunkedSize1 += Info1.ChunkSources[Chunk1Index].Size;
}
size_t DiffSavedSize = 0;
size_t ChunkedSize2 = 0;
for (uint32_t Chunk2Index = 0; Chunk2Index < Info2.Info.ChunkHashes.size(); ++Chunk2Index)
{
ChunkedSize2 += Info2.ChunkSources[Chunk2Index].Size;
if (Chunks1.find(Info2.Info.ChunkHashes[Chunk2Index]) == Chunks1.end())
{
DiffSavedSize += Info2.ChunkSources[Chunk2Index].Size;
}
}
ZEN_INFO("Diff {}, Chunks1: {}, Chunks2: {}, Min: {}, Max: {}, Avg: {}, Saved(1) {}, Saved(2) {}",
NiceBytes(DiffSavedSize),
Info1.Info.ChunkHashes.size(),
Info2.Info.ChunkHashes.size(),
MinSize,
MaxSize,
AvgSize,
NiceBytes(Info1.Info.RawSize - ChunkedSize1),
NiceBytes(Info2.Info.RawSize - ChunkedSize2));
});
}
}
}
}
# endif // 0
// WorkLatch.CountDown();
// WorkLatch.Wait();
}
# endif // 0
void
chunkedfile_forcelink()
{
}
} // namespace zen
#endif
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