public override unsafe bool CheckValueChangeToLastRecordValue(void *startMemory, long offset)
{
var mTmpValue = MemoryHelper.ReadInt32(startMemory, offset);
if (mTmpValue != mLastValue || mLastValue == int.MinValue)
{
mLastValue = mTmpValue;
return(true);
}
else
{
return(false);
}
}
/// <summary>
///
/// </summary>
/// <param name="startMemory"></param>
/// <param name="offset"></param>
/// <returns></returns>
public override unsafe bool CheckValueChangeToLastRecordValue(void *startMemory, long offset)
{
var xx = MemoryHelper.ReadInt32(startMemory, offset);
var yy = MemoryHelper.ReadInt32(startMemory, offset + 4);
if (xx != x || yy != y || xx == int.MinValue)
{
x = xx;
y = yy;
return(true);
}
else
{
return(false);
}
}
/// <summary>
///
/// </summary>
/// <param name="datafile"></param>
/// <param name="startTime"></param>
/// <param name="tid"></param>
/// <param name="offset"></param>
/// <param name="start"></param>
/// <param name="end"></param>
/// <param name="timetick"></param>
/// <returns></returns>
private static IEnumerable <Tuple <MarshalMemoryBlock, DateTime, DateTime, int> > ReadTagDataBlock2(DataFileSeriserbase datafile, int tid, long offset, DateTime start, DateTime end)
{
int fileDuration, blockDuration = 0;
int tagCount = 0;
long blockpointer = 0;
int timetick = 0;
DateTime time;
//var tagIndex = ReadTagIndexInDataPointer(datafile,tid, offset, out tagCount, out fileDuration, out blockDuration, out timetick, out blockpointer, out time);
ReadRegionHead(datafile, offset, out tagCount, out fileDuration, out blockDuration, out timetick, out blockpointer, out time);
var tagIndex = tid % tagCount;
int blockcount = fileDuration * 60 / blockDuration;
//读取文件开始时间
var startTime = datafile.ReadDateTime(0);
DateTime sstart = start;
DateTime send = end;
int buffersize = 1024 * 1024 * 2;
//分配读缓存
IntPtr mdataBuffer = Marshal.AllocHGlobal(buffersize);
long mbufferadderss = 0;
int bufferLen = 0;
//var headdata = GetHeadBlock(datafile, offset + blockpointer, tagCount * blockcount * 12);
var headdata = datafile.Read(offset + blockpointer + tagIndex * blockcount * 8, blockcount * 8);
while (sstart < end)
{
var ttmp = Math.Round((sstart - startTime).TotalSeconds, 3);
var vv = blockDuration * 60 - (ttmp % (blockDuration * 60));
send = sstart.AddSeconds(vv);
if (send > end)
{
send = end;
}
int blockindex = (int)(ttmp / (blockDuration * 60));
if (blockindex >= blockcount)
{
break;
//throw new Exception("DataPointer index is out of total block number");
}
var dataPointer = headdata.ReadInt(blockindex * 8); //读取DataBlock的相对地址
if (dataPointer > 0)
{
MarshalMemoryBlock vmm = null;
//说明数据没有采用Zip压缩，可以直接读取使用
var dp = dataPointer;
int datasize = 0;
int dataloc = 0;
if (dp >= mbufferadderss && (dp - mbufferadderss + 4) <= bufferLen && (dp - mbufferadderss + 4 + MemoryHelper.ReadInt32(mdataBuffer, dp - mbufferadderss)) <= bufferLen)
{
datasize = MemoryHelper.ReadInt32(mdataBuffer, dp - mbufferadderss);
dataloc = (int)(dp - mbufferadderss + 4);
}
else
{
bufferLen = datafile.Read(mdataBuffer, dp, buffersize);
mbufferadderss = dp;
datasize = MemoryHelper.ReadInt32(mdataBuffer, 0);
dataloc = (int)(dp - mbufferadderss + 4);
}
if (datasize > 0 && datasize < datafile.Length)
{
vmm = new MarshalMemoryBlock(datasize, datasize);
MemoryHelper.MemoryCopy(mdataBuffer, dataloc, vmm.Buffers[0], 0, datasize);
}
if (vmm != null)
{
yield return(new Tuple <MarshalMemoryBlock, DateTime, DateTime, int>(vmm, sstart, send, timetick));
}
}
sstart = send;
}
headdata.Dispose();
Marshal.FreeHGlobal(mdataBuffer);
}
/// <summary>
///
/// </summary>
/// <param name="datafile"></param>
/// <param name="tid"></param>
/// <param name="offset"></param>
/// <param name="dataTimes"></param>
/// <param name="timetick"></param>
/// <returns></returns>
private static Dictionary <MarshalMemoryBlock, Tuple <List <DateTime>, int> > ReadTagDataBlock2(DataFileSeriserbase datafile, int tid, long offset, List <DateTime> dataTimes, out int timetick)
{
int fileDuration, blockDuration = 0;
int tagCount = 0;
long blockpointer = 0;
DateTime time;
//var tagIndex = ReadTagIndexInDataPointer(datafile,tid, offset, out tagCount, out fileDuration, out blockDuration, out timetick, out blockpointer, out time);
ReadRegionHead(datafile, offset, out tagCount, out fileDuration, out blockDuration, out timetick, out blockpointer, out time);
var tagIndex = tid % tagCount;
Dictionary <long, MarshalMemoryBlock> rtmp = new Dictionary <long, MarshalMemoryBlock>();
Dictionary <MarshalMemoryBlock, Tuple <List <DateTime>, int> > re = new Dictionary <MarshalMemoryBlock, Tuple <List <DateTime>, int> >();
if (tagCount == 0)
{
return(re);
}
int blockcount = fileDuration * 60 / blockDuration;
var startTime = datafile.ReadDateTime(0);
int buffersize = 1024 * 1024 * 2;
//分配读缓存
IntPtr mdataBuffer = Marshal.AllocHGlobal(buffersize);
long mbufferadderss = 0;
int bufferLen = buffersize;
// var headdata = GetHeadBlock(datafile, offset + blockpointer, tagCount * blockcount * 12);
var headdata = datafile.Read(offset + blockpointer + tagIndex * blockcount * 8, blockcount * 8);
long mLastBuffer = 0;
int mLastDataLoc = 0;
int mLastDataSize = 0;
MarshalMemoryBlock vmm = null;
foreach (var vdd in dataTimes)
{
var ttmp = (vdd - startTime).TotalMinutes;
int blockindex = (int)(ttmp / blockDuration);
if (blockindex > blockcount)
{
throw new Exception("DataPointer index is out of total block number");
}
//var dataPointer = headdata.ReadInt(tagIndex * blockcount * 12 + blockindex * 12); //读取DataBlock的相对地址
//var dataPointerbase = headdata.ReadLong(tagIndex * blockcount * 12 + blockindex * 12 + 4); //读取DataBlock的基地址
var dataPointer = headdata.ReadInt(blockindex * 8); //读取DataBlock的相对地址
//var dataPointerbase = headdata.ReadLong(blockindex * 12 + 4); //读取DataBlock的基地址
if (dataPointer > 0)
{
////var datasize = datafile.ReadInt(dataPointer); //读取DataBlock 的大小
//var vmm = GetDataMemory(datafile, dataPointerbase, dataPointer);
//说明数据没有采用Zip压缩，可以直接读取使用
var dp = dataPointer;
int datasize = 0;
int dataloc = 0;
if (dp >= mbufferadderss && (dp - mbufferadderss + 4) <= bufferLen && (dp - mbufferadderss + 4 + MemoryHelper.ReadInt32(mdataBuffer, dp - mbufferadderss)) <= bufferLen)
{
datasize = MemoryHelper.ReadInt32(mdataBuffer, dp - mbufferadderss);
dataloc = (int)(dp - mbufferadderss + 4);
}
else
{
bufferLen = datafile.Read(mdataBuffer, dp, buffersize);
mbufferadderss = dp;
datasize = MemoryHelper.ReadInt32(mdataBuffer, 0);
dataloc = (int)(dp - mbufferadderss + 4);
}
if (datasize > 0 && (mLastBuffer != mbufferadderss || mLastDataLoc != dataloc || mLastDataSize != datasize))
{
vmm = new MarshalMemoryBlock(datasize, datasize);
MemoryHelper.MemoryCopy(mdataBuffer, dataloc, vmm.Buffers[0], 0, datasize);
mLastBuffer = mbufferadderss;
mLastDataLoc = dataloc;
mLastDataSize = datasize;
}
else if (datasize <= 0)
{
vmm = null;
}
if (vmm != null)
{
if (!rtmp.ContainsKey(dataPointer))
{
//var rmm = datafile.Read(dataPointer + 4, datasize);
if (!re.ContainsKey(vmm))
{
re.Add(vmm, new Tuple <List <DateTime>, int>(new List <DateTime>()
{
vdd
}, blockindex));
}
else
{
re[vmm].Item1.Add(vdd);
}
rtmp.Add(dataPointer, vmm);
}
else
{
//var rmm = rtmp[dataPointer];
if (!re.ContainsKey(vmm))
{
re.Add(vmm, new Tuple <List <DateTime>, int>(new List <DateTime>()
{
vdd
}, blockindex));
}
else
{
re[vmm].Item1.Add(vdd);
}
}
}
}
}
headdata.Dispose();
Marshal.FreeHGlobal(mdataBuffer);
return(re);
}
/// <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;
}
/// <summary>
///
/// </summary>
/// <param name="offset"></param>
/// <returns></returns>
public virtual int ReadInt(long offset)
{
mPosition = offset + sizeof(int);
return(MemoryHelper.ReadInt32((void *)mHandles, offset));
}
/// <summary>
///
/// </summary>
/// <param name="index"></param>
/// <returns></returns>
public T GetValue(int index, out DateTime time, out byte qulity)
{
object re = null;
switch (mDataType)
{
case 0:
re = Convert.ToBoolean(MemoryHelper.ReadByte((void *)handle, index));
break;
case 1:
re = MemoryHelper.ReadByte((void *)handle, index);
break;
case 2:
re = MemoryHelper.ReadShort((void *)handle, index * 2);
break;
case 3:
re = MemoryHelper.ReadUShort((void *)handle, index * 2);
break;
case 4:
re = MemoryHelper.ReadInt32((void *)handle, index * 4);
break;
case 5:
re = MemoryHelper.ReadUInt32((void *)handle, index * 4);
break;
case 6:
re = MemoryHelper.ReadInt64((void *)handle, index * 8);
break;
case 7:
re = MemoryHelper.ReadUInt64((void *)handle, index * 8);
break;
case 8:
re = MemoryHelper.ReadFloat((void *)handle, index * 4);
break;
case 9:
re = MemoryHelper.ReadDouble((void *)handle, index * 8);
break;
case 10:
re = MemoryHelper.ReadDateTime((void *)handle, index * 8);
break;
case 11:
if (mStringCach != null)
{
re = mStringCach[index];
}
else
{
mStringCach = new List <string>(mCount);
int cc = 0;
int pos = 0;
int len = 0;
while (cc < this.mCount)
{
len = MemoryHelper.ReadByte((void *)handle, pos);
mStringCach.Add(new string((sbyte *)handle, pos + 1, len, Encoding.Unicode));
pos += len + 1;
cc++;
}
re = mStringCach[index];
}
break;
case 12:
var x = MemoryHelper.ReadInt32((void *)handle, index * 8);
var y = MemoryHelper.ReadInt32((void *)handle, index * 8 + 4);
re = new IntPointData(x, y);
break;
case 13:
re = new UIntPointData(MemoryHelper.ReadUInt32((void *)handle, index * 8), MemoryHelper.ReadUInt32((void *)handle, index * 8 + 4));
break;
case 14:
re = new IntPoint3Data(MemoryHelper.ReadInt32((void *)handle, index * 12), MemoryHelper.ReadInt32((void *)handle, index * 12 + 4), MemoryHelper.ReadInt32((void *)handle, index * 12 + 8));
break;
case 15:
re = new UIntPoint3Data(MemoryHelper.ReadUInt32((void *)handle, index * 12), MemoryHelper.ReadUInt32((void *)handle, index * 12 + 4), MemoryHelper.ReadUInt32((void *)handle, index * 12 + 8));
break;
case 16:
re = new LongPointData(MemoryHelper.ReadInt64((void *)handle, index * 16), MemoryHelper.ReadInt64((void *)handle, index * 16 + 8));
break;
case 17:
re = new ULongPointData(MemoryHelper.ReadUInt64((void *)handle, index * 16), MemoryHelper.ReadUInt64((void *)handle, index * 16 + 8));
break;
case 18:
re = new LongPoint3Data(MemoryHelper.ReadInt64((void *)handle, index * 24), MemoryHelper.ReadInt64((void *)handle, index * 24 + 8), MemoryHelper.ReadInt64((void *)handle, index * 24 + 16));
break;
case 19:
re = new ULongPoint3Data(MemoryHelper.ReadUInt64((void *)handle, index * 24), MemoryHelper.ReadUInt64((void *)handle, index * 24 + 8), MemoryHelper.ReadUInt64((void *)handle, index * 24 + 16));
break;
}
time = MemoryHelper.ReadDateTime((void *)handle, index * 8 + mTimeAddr);
qulity = MemoryHelper.ReadByte((void *)handle, mQulityAddr + index);
return((T)re);
}
/// <summary>
///
/// </summary>
/// <param name="index"></param>
/// <returns></returns>
public T GetValue(int index, out DateTime time, out byte qulity)
{
object re = null;
switch (mDataType)
{
case 0:
re = Convert.ToBoolean(MemoryHelper.ReadByte((void *)handle, index));
break;
case 1:
re = MemoryHelper.ReadByte((void *)handle, index);
break;
case 2:
re = MemoryHelper.ReadShort((void *)handle, index * 2);
break;
case 3:
re = MemoryHelper.ReadShort((void *)handle, index * 2);
break;
case 4:
re = MemoryHelper.ReadInt32((void *)handle, index * 4);
break;
case 5:
re = MemoryHelper.ReadInt32((void *)handle, index * 4);
break;
case 6:
re = MemoryHelper.ReadInt32((void *)handle, index * 8);
break;
case 7:
re = MemoryHelper.ReadInt32((void *)handle, index * 8);
break;
case 8:
re = MemoryHelper.ReadFloat((void *)handle, index * 4);
break;
case 9:
re = MemoryHelper.ReadDouble((void *)handle, index * 8);
break;
case 10:
re = MemoryHelper.ReadDateTime((void *)handle, index * 8);
break;
case 11:
int cc = 0;
int pos = 0;
while (true)
{
if (cc >= index)
{
break;
}
//pos += (mDataBuffer[pos]+1);
pos += MemoryHelper.ReadByte((void *)handle, pos) + 1;
cc++;
}
re = new string((char *)handle, pos + 1, MemoryHelper.ReadByte((void *)handle, pos));
break;
}
time = MemoryHelper.ReadDateTime((void *)handle, index * 8 + mTimeAddr);
qulity = MemoryHelper.ReadByte((void *)handle, mQulityAddr + index);
return((T)re);
}