| 5 | |
| 6 | namespace NNetliba { |
| 7 | int TIBMemStream::WriteImpl(const void* userBuffer, int sizeArg) { |
| 8 | const char* srcData = (const char*)userBuffer; |
| 9 | int size = sizeArg; |
| 10 | for (;;) { |
| 11 | if (size == 0) |
| 12 | return sizeArg; |
| 13 | if (CurBlock == Blocks.ysize()) { |
| 14 | // add new block |
| 15 | TBlock& blk = Blocks.emplace_back(); |
| 16 | blk.StartOffset = GetLength(); |
| 17 | int szLog = 17 + Min(Blocks.ysize() / 2, 13); |
| 18 | blk.BufSize = 1 << szLog; |
| 19 | blk.DataSize = 0; |
| 20 | blk.Mem = MemPool->Alloc(blk.BufSize); |
| 21 | Y_ASSERT(CurBlockOffset == 0); |
| 22 | } |
| 23 | TBlock& curBlk = Blocks[CurBlock]; |
| 24 | int leftSpace = curBlk.BufSize - CurBlockOffset; |
| 25 | int copySize = Min(size, leftSpace); |
| 26 | memcpy(curBlk.Mem->GetData() + CurBlockOffset, srcData, copySize); |
| 27 | size -= copySize; |
| 28 | CurBlockOffset += copySize; |
| 29 | srcData += copySize; |
| 30 | curBlk.DataSize = Max(curBlk.DataSize, CurBlockOffset); |
| 31 | if (CurBlockOffset == curBlk.BufSize) { |
| 32 | ++CurBlock; |
| 33 | CurBlockOffset = 0; |
| 34 | } |
| 35 | } |
| 36 | } |
| 37 | |
| 38 | int TIBMemStream::ReadImpl(void* userBuffer, int sizeArg) { |
| 39 | char* dstData = (char*)userBuffer; |