2013-07-29 07:13:03 -04:00
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// Processor.cpp
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// Implements the cProcessor class representing the overall processor engine that manages threads, calls callbacks etc.
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#include "Globals.h"
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#include "Processor.h"
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#include "Callback.h"
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#include "../../source/WorldStorage/FastNBT.h"
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#include "zlib.h"
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#include "Utils.h"
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const int CHUNK_INFLATE_MAX = 1 MiB;
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// cProcessor::cThread:
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cProcessor::cThread::cThread(cCallback & a_Callback, cProcessor & a_ParentProcessor) :
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super("cProcessor::cThread"),
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m_Callback(a_Callback),
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m_ParentProcessor(a_ParentProcessor)
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{
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super::Start();
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}
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void cProcessor::cThread::Execute(void)
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{
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LOG("Started a new thread: %d", cIsThread::GetCurrentID());
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m_ParentProcessor.m_ThreadsHaveStarted.Set();
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for (;;)
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{
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AString FileName = m_ParentProcessor.GetOneFileName();
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if (FileName.empty())
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{
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// All done, terminate the thread
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break;
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}
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ProcessFile(FileName);
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} // for-ever
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LOG("Thread %d terminated", cIsThread::GetCurrentID());
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}
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void cProcessor::cThread::ProcessFile(const AString & a_FileName)
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{
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LOG("Processing file \"%s\"", a_FileName.c_str());
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size_t idx = a_FileName.rfind("r.");
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if (idx == AString::npos)
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{
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LOG("Cannot parse filename \"%s\", skipping file.", a_FileName.c_str());
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return;
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}
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int RegionX = 0, RegionZ = 0;
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if (sscanf_s(a_FileName.c_str() + idx, "r.%d.%d.mca", &RegionX, &RegionZ) != 2)
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{
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LOG("Cannot parse filename \"%s\" into coords, skipping file.", a_FileName.c_str());
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return;
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}
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cFile f;
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if (!f.Open(a_FileName, cFile::fmRead))
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{
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LOG("Cannot open file \"%s\", skipping file.", a_FileName.c_str());
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return;
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}
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AString FileContents;
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f.ReadRestOfFile(FileContents);
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if (FileContents.size() < sizeof(8 KiB))
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{
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LOG("Cannot read header in file \"%s\", skipping file.", a_FileName.c_str());
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return;
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}
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ProcessFileData(FileContents.data(), FileContents.size(), RegionX * 32, RegionZ * 32);
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}
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void cProcessor::cThread::ProcessFileData(const char * a_FileData, size_t a_Size, int a_ChunkBaseX, int a_ChunkBaseZ)
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{
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int Header[2048];
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int * HeaderPtr = (int *)a_FileData;
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for (int i = 0; i < ARRAYCOUNT(Header); i++)
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{
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Header[i] = ntohl(HeaderPtr[i]);
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}
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for (int i = 0; i < 1024; i++)
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{
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unsigned Location = Header[i];
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unsigned Timestamp = Header[i + 1024];
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if (
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((Location == 0) && (Timestamp == 0)) || // Official docs' "not present"
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(Location >> 8 < 2) || // Logical - no chunk can start inside the header
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((Location & 0xff) == 0) || // Logical - no chunk can be zero bytes
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((Location >> 8) * 4096 > a_Size) // Logical - no chunk can start at beyond the file end
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)
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{
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// Chunk not present in the file
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continue;
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}
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int ChunkX = a_ChunkBaseX + (i % 32);
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int ChunkZ = a_ChunkBaseZ + (i / 32);
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if (m_Callback.OnNewChunk(ChunkX, ChunkZ))
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{
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continue;
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}
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ProcessChunk(a_FileData, ChunkX, ChunkZ, Location >> 8, Location & 0xff, Timestamp);
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} // for i - chunk index
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}
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void cProcessor::cThread::ProcessChunk(const char * a_FileData, int a_ChunkX, int a_ChunkZ, unsigned a_SectorStart, unsigned a_SectorSize, unsigned a_TimeStamp)
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{
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if (m_Callback.OnHeader(a_SectorStart * 4096, a_SectorSize, a_TimeStamp))
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{
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return;
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}
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const char * ChunkStart = a_FileData + a_SectorStart * 4096;
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int ByteSize = ntohl(*(int *)ChunkStart);
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char CompressionMethod = ChunkStart[4];
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if (m_Callback.OnCompressedDataSizePos(ByteSize, a_SectorStart * 4096 + 5, CompressionMethod))
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{
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return;
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}
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ProcessCompressedChunkData(a_ChunkX, a_ChunkZ, ChunkStart + 5, ByteSize);
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}
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void cProcessor::cThread::ProcessCompressedChunkData(int a_ChunkX, int a_ChunkZ, const char * a_CompressedData, int a_CompressedSize)
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{
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char Decompressed[CHUNK_INFLATE_MAX];
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z_stream strm;
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strm.zalloc = (alloc_func)NULL;
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strm.zfree = (free_func)NULL;
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strm.opaque = NULL;
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inflateInit(&strm);
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strm.next_out = (Bytef *)Decompressed;
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strm.avail_out = sizeof(Decompressed);
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strm.next_in = (Bytef *)a_CompressedData;
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strm.avail_in = a_CompressedSize;
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int res = inflate(&strm, Z_FINISH);
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inflateEnd(&strm);
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if (res != Z_STREAM_END)
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{
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LOG("Decompression failed, skipping chunk [%d, %d]", a_ChunkX, a_ChunkZ);
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return;
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}
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if (m_Callback.OnDecompressedData(Decompressed, strm.total_out))
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{
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return;
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}
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// Parse the NBT data:
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cParsedNBT NBT(Decompressed, strm.total_out);
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if (!NBT.IsValid())
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{
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LOG("NBT Parsing failed, skipping chunk [%d, %d]", a_ChunkX, a_ChunkZ);
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return;
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}
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ProcessParsedChunkData(a_ChunkX, a_ChunkZ, NBT);
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}
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void cProcessor::cThread::ProcessParsedChunkData(int a_ChunkX, int a_ChunkZ, cParsedNBT & a_NBT)
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{
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int LevelTag = a_NBT.FindChildByName(0, "Level");
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if (LevelTag < 0)
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{
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LOG("Bad logical structure of the NBT, skipping chunk [%d, %d].", a_ChunkX, a_ChunkZ);
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return;
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}
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int XPosTag = a_NBT.FindChildByName(LevelTag, "xPos");
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int ZPosTag = a_NBT.FindChildByName(LevelTag, "zPos");
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if ((XPosTag < 0) || (ZPosTag < 0))
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{
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LOG("Pos tags missing in NTB, skipping chunk [%d, %d].", a_ChunkX, a_ChunkZ);
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return;
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}
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if (m_Callback.OnRealCoords(a_NBT.GetInt(XPosTag), a_NBT.GetInt(ZPosTag)))
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{
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return;
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}
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int LastUpdateTag = a_NBT.FindChildByName(LevelTag, "LastUpdate");
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if (LastUpdateTag > 0)
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{
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if (m_Callback.OnLastUpdate(a_NBT.GetLong(LastUpdateTag)))
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{
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return;
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}
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}
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int TerrainPopulatedTag = a_NBT.FindChildByName(LevelTag, "TerrainPopulated");
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bool TerrainPopulated = (TerrainPopulatedTag < 0) ? false : (a_NBT.GetByte(TerrainPopulatedTag) != 0);
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if (m_Callback.OnTerrainPopulated(TerrainPopulated))
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{
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return;
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}
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int BiomesTag = a_NBT.FindChildByName(LevelTag, "Biomes");
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if (BiomesTag > 0)
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{
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if (m_Callback.OnBiomes((const unsigned char *)(a_NBT.GetData(BiomesTag))))
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{
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return;
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}
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}
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int HeightMapTag = a_NBT.FindChildByName(LevelTag, "HeightMap");
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if (HeightMapTag > 0)
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{
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if (m_Callback.OnHeightMap((const int *)(a_NBT.GetData(HeightMapTag))))
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{
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return;
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}
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}
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if (ProcessChunkSections(a_ChunkX, a_ChunkZ, a_NBT, LevelTag))
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{
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return;
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}
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if (ProcessChunkEntities(a_ChunkX, a_ChunkZ, a_NBT, LevelTag))
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{
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return;
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}
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if (ProcessChunkTileEntities(a_ChunkX, a_ChunkZ, a_NBT, LevelTag))
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{
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return;
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}
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if (ProcessChunkTileTicks(a_ChunkX, a_ChunkZ, a_NBT, LevelTag))
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{
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return;
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}
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}
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bool cProcessor::cThread::ProcessChunkSections(int a_ChunkX, int a_ChunkZ, cParsedNBT & a_NBT, int a_LevelTag)
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{
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int Sections = a_NBT.FindChildByName(a_LevelTag, "Sections");
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if (Sections < 0)
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{
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return false;
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}
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bool SectionProcessed[16];
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memset(SectionProcessed, 0, sizeof(SectionProcessed));
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for (int Tag = a_NBT.GetFirstChild(Sections); Tag > 0; Tag = a_NBT.GetNextSibling(Tag))
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{
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int YTag = a_NBT.FindChildByName(Tag, "Y");
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int BlocksTag = a_NBT.FindChildByName(Tag, "Blocks");
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int AddTag = a_NBT.FindChildByName(Tag, "Add");
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int DataTag = a_NBT.FindChildByName(Tag, "Data");
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int BlockLightTag = a_NBT.FindChildByName(Tag, "BlockLightTag");
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int SkyLightTag = a_NBT.FindChildByName(Tag, "SkyLight");
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if ((YTag < 0) || (BlocksTag < 0) || (DataTag < 0))
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{
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continue;
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}
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unsigned char SectionY = a_NBT.GetByte(YTag);
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if (SectionY >= 16)
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{
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LOG("WARNING: Section Y >= 16 (%d), high world, wtf? Skipping section!", SectionY);
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continue;
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}
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if (m_Callback.OnSection(
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SectionY,
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(const BLOCKTYPE *) (a_NBT.GetData(BlocksTag)),
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(AddTag > 0) ? (const NIBBLETYPE *)(a_NBT.GetData(AddTag)) : NULL,
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(const NIBBLETYPE *)(a_NBT.GetData(DataTag)),
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(BlockLightTag > 0) ? (const NIBBLETYPE *)(a_NBT.GetData(BlockLightTag)) : NULL,
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(BlockLightTag > 0) ? (const NIBBLETYPE *)(a_NBT.GetData(BlockLightTag)) : NULL
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))
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{
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return true;
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}
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SectionProcessed[SectionY] = true;
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} // for Tag - Sections[]
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// Call the callback for empty sections:
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for (unsigned char y = 0; y < 16; y++)
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{
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if (!SectionProcessed[y])
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{
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if (m_Callback.OnEmptySection(y))
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{
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return true;
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}
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}
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}
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if (m_Callback.OnSectionsFinished())
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{
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return true;
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}
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return false;
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}
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bool cProcessor::cThread::ProcessChunkEntities(int a_ChunkX, int a_ChunkZ, cParsedNBT & a_NBT, int a_LevelTag)
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{
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int EntitiesTag = a_NBT.FindChildByName(a_LevelTag, "Entities");
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if (EntitiesTag < 0)
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{
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return false;
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}
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for (int EntityTag = a_NBT.GetFirstChild(EntitiesTag); EntityTag > 0; EntityTag = a_NBT.GetNextSibling(EntityTag))
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{
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int PosTag = a_NBT.FindChildByName(EntityTag, "Pos");
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if (PosTag < 0)
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{
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continue;
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}
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int SpeedTag = a_NBT.FindChildByName(EntityTag, "Motion");
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if (SpeedTag < 0)
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{
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continue;
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}
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int RotTag = a_NBT.FindChildByName(EntityTag, "Rotation");
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if (RotTag < 0)
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{
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continue;
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}
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double Pos[3];
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for (int i = 0, tag = a_NBT.GetFirstChild(PosTag); (i < 3) && (tag > 0); i++)
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{
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Pos[i] = a_NBT.GetDouble(tag);
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}
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double Speed[3];
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for (int i = 0, tag = a_NBT.GetFirstChild(SpeedTag); (i < 3) && (tag > 0); i++)
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{
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Speed[i] = a_NBT.GetDouble(tag);
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}
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float Rot[2];
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for (int i = 0, tag = a_NBT.GetFirstChild(RotTag); (i < 2) && (tag > 0); i++)
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{
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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;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|