public void TimeTest()
{
MarshalFixedMemoryBlock memory = new MarshalFixedMemoryBlock((long)(1024 * 1024 * 1024) * 4);
DateTime dt = DateTime.Now;
long ltmp = (long)(1024 * 1024 * 1024) * 1;
memory.WriteByte(ltmp, (byte)20);
memory.WriteDatetime(memory.Position, dt);
memory.WriteDouble(memory.Position, 20.5);
memory.WriteFloat(memory.Position, 20.5f);
memory.WriteString(memory.Position, dt.ToString(), Encoding.Unicode);
memory.WriteInt(memory.Position, 20);
memory.WriteLong(memory.Position, 20);
memory.WriteShort(memory.Position, (short)20);
memory.WriteUShort(memory.Position, (ushort)20);
memory.WriteUInt(memory.Position, 20);
memory.WriteULong(memory.Position, 20);
MarshalFixedMemoryBlock mm = new MarshalFixedMemoryBlock(1024);
Stopwatch sw = new Stopwatch();
sw.Start();
for (int i = 0; i < 1000000; i++)
{
mm.WriteBytesDirect(500, mm.StartMemory, (int)ltmp, 50);
memory.WriteUShortDirect(550, 50);
memory.WriteByte(550, 1);
}
sw.Stop();
Debug.Print("10000000:" + sw.ElapsedMilliseconds);
}
/// <summary>
/// 拷贝DataRegion数据
/// </summary>
/// <param name="msource">源流</param>
/// <param name="sourceheadpoint">源数据块指针</param>
/// <param name="tagcount">变量个数</param>
/// <param name="blockcount">数据块个数</param>
/// <param name="mtarget">目标流</param>
/// <param name="targetheadpoint">目标数据块</param>
private unsafe void CopyRegionData(System.IO.Stream msource, MarshalFixedMemoryBlock sourceheadpoint, int tagcount, int blockcount, System.IO.Stream mtarget, out MarshalFixedMemoryBlock targetheadpoint)
{
//Stopwatch sw = new Stopwatch();
//sw.Start();
MarshalFixedMemoryBlock re = new MarshalFixedMemoryBlock(sourceheadpoint.Length);
MarshalFixedMemoryBlock data = new MarshalFixedMemoryBlock(blockcount * 302 * 264 * 2);
//int bufferLenght = 2*1024 * 1024;
//IntPtr[] databuffers = new IntPtr[blockcount];
//long[] databufferLocations = new long[blockcount];
//int[] databufferLens = new int[blockcount];
//for(int i=0;i<blockcount;i++)
//{
// databuffers[i] = Marshal.AllocHGlobal(bufferLenght);
//}
//sw.Stop();
//LoggerService.Service.Debug("HisDataArrange", "初始化分配内存 耗时:"+ ltmp1 +"," +(sw.ElapsedMilliseconds-ltmp1));
mtarget.Position += tagcount * 8 * blockcount;
long mtargetposition = mtarget.Position;
int offset = 0;
for (int tagid = 0; tagid < tagcount; tagid++)
{
data.Clear();
offset = 0;
mtargetposition = mtarget.Position;
for (int blockid = 0; blockid < blockcount; blockid++)
{
CheckPaused();
var baseaddress = sourceheadpoint.ReadInt(blockid * tagcount * 8 + tagid * 8);
//var baseaddress = sourceheadpoint.ReadLong(j * tagcount * 8 + i * 8 + 4);
if (baseaddress > 0)
{
//重新组织数据块指针的分布形式，使得一个变量的数据块指针在一起
//re.WriteInt(j * 12 + i * blockcount * 12, (int)(offset | 0x80000000));
//re.WriteLong(j * 12 + i * blockcount * 12 + 4, mtargetposition);
re.WriteLong(blockid * 8 + tagid * blockcount * 8, mtargetposition + offset);
int datasize = 0;
int dataloc = 0;
if (baseaddress >= databufferLocations[blockid] && (baseaddress - databufferLocations[blockid] + 4) <= databufferLens[blockid] && (baseaddress - databufferLocations[blockid] + 4 + MemoryHelper.ReadInt32((void *)databuffers[blockid], baseaddress - databufferLocations[blockid])) <= databufferLens[blockid])
{
datasize = MemoryHelper.ReadInt32((void *)databuffers[blockid], baseaddress - databufferLocations[blockid]);
dataloc = (int)(baseaddress - databufferLocations[blockid] + 4);
}
else
{
int len = (int)Math.Min(bufferLenght, msource.Length - msource.Position);
msource.Position = baseaddress;
msource.Read(new Span <byte>((void *)databuffers[blockid], len));
databufferLocations[blockid] = baseaddress;
databufferLens[blockid] = len;
datasize = MemoryHelper.ReadInt32((void *)databuffers[blockid], 0);
dataloc = (int)(baseaddress - databufferLocations[blockid] + 4);
}
data.CheckAndResize(data.Position + datasize + 4, 0.5);
data.WriteInt(offset, datasize);
offset += 4;
if ((dataloc + datasize) > bufferLenght || datasize <= 0)
{
targetheadpoint = null;
continue;
}
Buffer.MemoryCopy((void *)(databuffers[blockid] + dataloc), (void *)(data.Buffers + offset), datasize, datasize);
data.Position += datasize;
offset += datasize;
}
else
{
//重新组织数据块指针的分布形式，使得一个变量的数据块指针在一起
//re.WriteInt(j * 12 + i * blockcount * 12, 0);
re.WriteLong(blockid * 8 + tagid * blockcount * 8, 0);
}
}
data.WriteToStream(mtarget, 0, offset);
}
data.Dispose();
//for (int i = 0; i < blockcount; i++)
//{
// Marshal.FreeHGlobal(databuffers[i]);
//}
targetheadpoint = re;
}
