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cuberite-2a/AnvilStats/Processor.cpp

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// Processor.cpp
// Implements the cProcessor class representing the overall processor engine that manages threads, calls callbacks etc.
#include "Globals.h"
#include "Processor.h"
#include "Callback.h"
#include "../source/WorldStorage/FastNBT.h"
#include "zlib.h"
#include "Utils.h"
const int CHUNK_INFLATE_MAX = 1 MiB;
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// cProcessor::cThread:
cProcessor::cThread::cThread(cCallback & a_Callback, cProcessor & a_ParentProcessor) :
super("cProcessor::cThread"),
m_Callback(a_Callback),
m_ParentProcessor(a_ParentProcessor)
{
super::Start();
}
void cProcessor::cThread::Execute(void)
{
LOG("Started a new thread: %d", cIsThread::GetCurrentID());
m_ParentProcessor.m_ThreadsHaveStarted.Set();
for (;;)
{
AString FileName = m_ParentProcessor.GetOneFileName();
if (FileName.empty())
{
// All done, terminate the thread
break;
}
ProcessFile(FileName);
} // for-ever
LOG("Thread %d terminated", cIsThread::GetCurrentID());
}
void cProcessor::cThread::ProcessFile(const AString & a_FileName)
{
LOG("Processing file \"%s\"", a_FileName.c_str());
size_t idx = a_FileName.rfind("r.");
if (idx == AString::npos)
{
LOG("Cannot parse filename \"%s\", skipping file.", a_FileName.c_str());
return;
}
int RegionX = 0, RegionZ = 0;
if (sscanf_s(a_FileName.c_str() + idx, "r.%d.%d.mca", &RegionX, &RegionZ) != 2)
{
LOG("Cannot parse filename \"%s\" into coords, skipping file.", a_FileName.c_str());
return;
}
cFile f;
if (!f.Open(a_FileName, cFile::fmRead))
{
LOG("Cannot open file \"%s\", skipping file.", a_FileName.c_str());
return;
}
AString FileContents;
f.ReadRestOfFile(FileContents);
if (FileContents.size() < sizeof(8 KiB))
{
LOG("Cannot read header in file \"%s\", skipping file.", a_FileName.c_str());
return;
}
ProcessFileData(FileContents.data(), FileContents.size(), RegionX * 32, RegionZ * 32);
}
void cProcessor::cThread::ProcessFileData(const char * a_FileData, size_t a_Size, int a_ChunkBaseX, int a_ChunkBaseZ)
{
int Header[2048];
int * HeaderPtr = (int *)a_FileData;
for (int i = 0; i < ARRAYCOUNT(Header); i++)
{
Header[i] = ntohl(HeaderPtr[i]);
}
for (int i = 0; i < 1024; i++)
{
unsigned Location = Header[i];
unsigned Timestamp = Header[i + 1024];
if (
((Location == 0) && (Timestamp == 0)) || // Official docs' "not present"
(Location >> 8 < 2) || // Logical - no chunk can start inside the header
((Location & 0xff) == 0) || // Logical - no chunk can be zero bytes
((Location >> 8) * 4096 > a_Size) // Logical - no chunk can start at beyond the file end
)
{
// Chunk not present in the file
continue;
}
int ChunkX = a_ChunkBaseX + (i % 32);
int ChunkZ = a_ChunkBaseZ + (i / 32);
if (m_Callback.OnNewChunk(ChunkX, ChunkZ))
{
continue;
}
ProcessChunk(a_FileData, ChunkX, ChunkZ, Location >> 8, Location & 0xff, Timestamp);
} // for i - chunk index
}
void cProcessor::cThread::ProcessChunk(const char * a_FileData, int a_ChunkX, int a_ChunkZ, unsigned a_SectorStart, unsigned a_SectorSize, unsigned a_TimeStamp)
{
if (m_Callback.OnHeader(a_SectorStart * 4096, a_SectorSize, a_TimeStamp))
{
return;
}
const char * ChunkStart = a_FileData + a_SectorStart * 4096;
int ByteSize = ntohl(*(int *)ChunkStart);
char CompressionMethod = ChunkStart[4];
if (m_Callback.OnCompressedDataSizePos(ByteSize, a_SectorStart * 4096 + 5, CompressionMethod))
{
return;
}
ProcessCompressedChunkData(a_ChunkX, a_ChunkZ, ChunkStart + 5, ByteSize);
}
void cProcessor::cThread::ProcessCompressedChunkData(int a_ChunkX, int a_ChunkZ, const char * a_CompressedData, int a_CompressedSize)
{
char Decompressed[CHUNK_INFLATE_MAX];
z_stream strm;
strm.zalloc = (alloc_func)NULL;
strm.zfree = (free_func)NULL;
strm.opaque = NULL;
inflateInit(&strm);
strm.next_out = (Bytef *)Decompressed;
strm.avail_out = sizeof(Decompressed);
strm.next_in = (Bytef *)a_CompressedData;
strm.avail_in = a_CompressedSize;
int res = inflate(&strm, Z_FINISH);
inflateEnd(&strm);
if (res != Z_STREAM_END)
{
LOG("Decompression failed, skipping chunk [%d, %d]", a_ChunkX, a_ChunkZ);
return;
}
if (m_Callback.OnDecompressedData(Decompressed, strm.total_out))
{
return;
}
// Parse the NBT data:
cParsedNBT NBT(Decompressed, strm.total_out);
if (!NBT.IsValid())
{
LOG("NBT Parsing failed, skipping chunk [%d, %d]", a_ChunkX, a_ChunkZ);
return;
}
ProcessParsedChunkData(a_ChunkX, a_ChunkZ, NBT);
}
void cProcessor::cThread::ProcessParsedChunkData(int a_ChunkX, int a_ChunkZ, cParsedNBT & a_NBT)
{
int LevelTag = a_NBT.FindChildByName(0, "Level");
if (LevelTag < 0)
{
LOG("Bad logical structure of the NBT, skipping chunk [%d, %d].", a_ChunkX, a_ChunkZ);
return;
}
int XPosTag = a_NBT.FindChildByName(LevelTag, "xPos");
int ZPosTag = a_NBT.FindChildByName(LevelTag, "zPos");
if ((XPosTag < 0) || (ZPosTag < 0))
{
LOG("Pos tags missing in NTB, skipping chunk [%d, %d].", a_ChunkX, a_ChunkZ);
return;
}
if (m_Callback.OnRealCoords(a_NBT.GetInt(XPosTag), a_NBT.GetInt(ZPosTag)))
{
return;
}
int LastUpdateTag = a_NBT.FindChildByName(LevelTag, "LastUpdate");
if (LastUpdateTag > 0)
{
if (m_Callback.OnLastUpdate(a_NBT.GetLong(LastUpdateTag)))
{
return;
}
}
int TerrainPopulatedTag = a_NBT.FindChildByName(LevelTag, "TerrainPopulated");
bool TerrainPopulated = (TerrainPopulatedTag < 0) ? false : (a_NBT.GetByte(TerrainPopulatedTag) != 0);
if (m_Callback.OnTerrainPopulated(TerrainPopulated))
{
return;
}
int BiomesTag = a_NBT.FindChildByName(LevelTag, "Biomes");
if (BiomesTag > 0)
{
if (m_Callback.OnBiomes((const unsigned char *)(a_NBT.GetData(BiomesTag))))
{
return;
}
}
int HeightMapTag = a_NBT.FindChildByName(LevelTag, "HeightMap");
if (HeightMapTag > 0)
{
if (m_Callback.OnHeightMap((const int *)(a_NBT.GetData(HeightMapTag))))
{
return;
}
}
if (ProcessChunkSections(a_ChunkX, a_ChunkZ, a_NBT, LevelTag))
{
return;
}
if (ProcessChunkEntities(a_ChunkX, a_ChunkZ, a_NBT, LevelTag))
{
return;
}
if (ProcessChunkTileEntities(a_ChunkX, a_ChunkZ, a_NBT, LevelTag))
{
return;
}
if (ProcessChunkTileTicks(a_ChunkX, a_ChunkZ, a_NBT, LevelTag))
{
return;
}
}
bool cProcessor::cThread::ProcessChunkSections(int a_ChunkX, int a_ChunkZ, cParsedNBT & a_NBT, int a_LevelTag)
{
int Sections = a_NBT.FindChildByName(a_LevelTag, "Sections");
if (Sections < 0)
{
return false;
}
bool SectionProcessed[16];
memset(SectionProcessed, 0, sizeof(SectionProcessed));
for (int Tag = a_NBT.GetFirstChild(Sections); Tag > 0; Tag = a_NBT.GetNextSibling(Tag))
{
int YTag = a_NBT.FindChildByName(Tag, "Y");
int BlocksTag = a_NBT.FindChildByName(Tag, "Blocks");
int AddTag = a_NBT.FindChildByName(Tag, "Add");
int DataTag = a_NBT.FindChildByName(Tag, "Data");
int BlockLightTag = a_NBT.FindChildByName(Tag, "BlockLightTag");
int SkyLightTag = a_NBT.FindChildByName(Tag, "SkyLight");
if ((YTag < 0) || (BlocksTag < 0) || (DataTag < 0))
{
continue;
}
unsigned char SectionY = a_NBT.GetByte(YTag);
if (SectionY >= 16)
{
LOG("WARNING: Section Y >= 16 (%d), high world, wtf? Skipping section!", SectionY);
continue;
}
if (m_Callback.OnSection(
SectionY,
(const BLOCKTYPE *) (a_NBT.GetData(BlocksTag)),
(AddTag > 0) ? (const NIBBLETYPE *)(a_NBT.GetData(AddTag)) : NULL,
(const NIBBLETYPE *)(a_NBT.GetData(DataTag)),
(BlockLightTag > 0) ? (const NIBBLETYPE *)(a_NBT.GetData(BlockLightTag)) : NULL,
(BlockLightTag > 0) ? (const NIBBLETYPE *)(a_NBT.GetData(BlockLightTag)) : NULL
))
{
return true;
}
SectionProcessed[SectionY] = true;
} // for Tag - Sections[]
// Call the callback for empty sections:
for (unsigned char y = 0; y < 16; y++)
{
if (!SectionProcessed[y])
{
if (m_Callback.OnEmptySection(y))
{
return true;
}
}
}
if (m_Callback.OnSectionsFinished())
{
return true;
}
return false;
}
bool cProcessor::cThread::ProcessChunkEntities(int a_ChunkX, int a_ChunkZ, cParsedNBT & a_NBT, int a_LevelTag)
{
int EntitiesTag = a_NBT.FindChildByName(a_LevelTag, "Entities");
if (EntitiesTag < 0)
{
return false;
}
for (int EntityTag = a_NBT.GetFirstChild(EntitiesTag); EntityTag > 0; EntityTag = a_NBT.GetNextSibling(EntityTag))
{
int PosTag = a_NBT.FindChildByName(EntityTag, "Pos");
if (PosTag < 0)
{
continue;
}
int SpeedTag = a_NBT.FindChildByName(EntityTag, "Motion");
if (SpeedTag < 0)
{
continue;
}
int RotTag = a_NBT.FindChildByName(EntityTag, "Rotation");
if (RotTag < 0)
{
continue;
}
double Pos[3];
for (int i = 0, tag = a_NBT.GetFirstChild(PosTag); (i < 3) && (tag > 0); i++)
{
Pos[i] = a_NBT.GetDouble(tag);
}
double Speed[3];
for (int i = 0, tag = a_NBT.GetFirstChild(SpeedTag); (i < 3) && (tag > 0); i++)
{
Speed[i] = a_NBT.GetDouble(tag);
}
float Rot[2];
for (int i = 0, tag = a_NBT.GetFirstChild(RotTag); (i < 2) && (tag > 0); i++)
{
Rot[i] = a_NBT.GetFloat(tag);
}
if (m_Callback.OnEntity(
a_NBT.GetString(a_NBT.FindChildByName(EntityTag, "id")),
Pos[0], Pos[1], Pos[2],
Speed[0], Speed[1], Speed[2],
Rot[0], Rot[1],
a_NBT.GetFloat(a_NBT.FindChildByName(EntityTag, "FallDistance")),
a_NBT.GetShort(a_NBT.FindChildByName(EntityTag, "Fire")),
a_NBT.GetShort(a_NBT.FindChildByName(EntityTag, "Air")),
a_NBT.GetByte(a_NBT.FindChildByName(EntityTag, "OnGround")),
a_NBT, EntityTag
))
{
return true;
}
} // for EntityTag - Entities[]
return false;
}
bool cProcessor::cThread::ProcessChunkTileEntities(int a_ChunkX, int a_ChunkZ, cParsedNBT & a_NBT, int a_LevelTag)
{
int TileEntitiesTag = a_NBT.FindChildByName(a_LevelTag, "TileEntities");
if (TileEntitiesTag < 0)
{
return false;
}
for (int TileEntityTag = a_NBT.GetFirstChild(TileEntitiesTag); TileEntityTag > 0; TileEntityTag = a_NBT.GetNextSibling(TileEntityTag))
{
if (m_Callback.OnTileEntity(
a_NBT.GetString(a_NBT.FindChildByName(TileEntityTag, "id")),
a_NBT.GetInt(a_NBT.FindChildByName(TileEntityTag, "x")),
a_NBT.GetInt(a_NBT.FindChildByName(TileEntityTag, "y")),
a_NBT.GetInt(a_NBT.FindChildByName(TileEntityTag, "z")),
a_NBT, TileEntityTag
))
{
return true;
}
} // for EntityTag - Entities[]
return false;
}
bool cProcessor::cThread::ProcessChunkTileTicks(int a_ChunkX, int a_ChunkZ, cParsedNBT & a_NBT, int a_LevelTag)
{
int TileTicksTag = a_NBT.FindChildByName(a_LevelTag, "TileTicks");
if (TileTicksTag < 0)
{
return false;
}
for (int TileTickTag = a_NBT.GetFirstChild(TileTicksTag); TileTickTag > 0; TileTickTag = a_NBT.GetNextSibling(TileTickTag))
{
int iTag = a_NBT.FindChildByName(TileTicksTag, "i");
int tTag = a_NBT.FindChildByName(TileTicksTag, "t");
int xTag = a_NBT.FindChildByName(TileTicksTag, "x");
int yTag = a_NBT.FindChildByName(TileTicksTag, "y");
int zTag = a_NBT.FindChildByName(TileTicksTag, "z");
if ((iTag < 0) || (tTag < 0) || (xTag < 0) || (yTag < 0) || (zTag < 0))
{
continue;
}
if (m_Callback.OnTileTick(
a_NBT.GetInt(iTag),
a_NBT.GetInt(iTag),
a_NBT.GetInt(iTag),
a_NBT.GetInt(iTag),
a_NBT.GetInt(iTag)
))
{
return true;
}
} // for EntityTag - Entities[]
return false;
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// cProcessor:
cProcessor::cProcessor(void) :
m_IsShuttingDown(false)
{
}
cProcessor::~cProcessor()
{
}
void cProcessor::ProcessWorld(const AString & a_WorldFolder, cCallbackFactory & a_CallbackFactory)
{
PopulateFileQueue(a_WorldFolder);
if (m_FileQueue.empty())
{
LOG("No files to process, exitting.");
return;
}
// Start as many threads as there are cores, plus one:
// (One more thread can be in the file-read IO block while all other threads crunch the numbers)
int NumThreads = GetNumCores() + 1;
/*
// Limit the number of threads in DEBUG mode to 1 for easier debugging
#ifdef _DEBUG
NumThreads = 1;
#endif // _DEBUG
//*/
for (int i = 0; i < NumThreads; i++)
{
cCallback * Callback = a_CallbackFactory.GetNewCallback();
m_Threads.push_back(new cThread(*Callback, *this));
}
// Wait for the first thread to start processing:
m_ThreadsHaveStarted.Wait();
// Wait for all threads to finish
// simply by calling each thread's destructor sequentially
LOG("Waiting for threads to finish");
for (cThreads::iterator itr = m_Threads.begin(), end = m_Threads.end(); itr != end; ++itr)
{
delete *itr;
} // for itr - m_Threads[]
LOG("Processor finished");
}
void cProcessor::PopulateFileQueue(const AString & a_WorldFolder)
{
LOG("Processing world in \"%s\"...", a_WorldFolder.c_str());
AString Path = a_WorldFolder;
if (!Path.empty() && (Path[Path.length() - 1] != cFile::PathSeparator))
{
Path.push_back(cFile::PathSeparator);
}
AStringList AllFiles = GetDirectoryContents(Path.c_str());
for (AStringList::iterator itr = AllFiles.begin(), end = AllFiles.end(); itr != end; ++itr)
{
if (itr->rfind(".mca") != itr->length() - 4)
{
// Not a .mca file
continue;
}
m_FileQueue.push_back(Path + *itr);
} // for itr - AllFiles[]
}
AString cProcessor::GetOneFileName(void)
{
cCSLock Lock(m_CS);
if (m_FileQueue.empty())
{
return "";
}
AString res = m_FileQueue.back();
m_FileQueue.pop_back();
return res;
}