/// <summary>
/// 文件读取器
/// </summary>
/// <param name="fileName">文件名称</param>
public TmphFileReader(TmphPhysical physical)
{
this.physical = physical;
fileStream = new FileStream(physical.path + physical.fileName, FileMode.Open, FileAccess.Read,
FileShare.ReadWrite, TmphAppSetting.StreamBufferSize, FileOptions.SequentialScan);
size = fileStream.Length;
waitHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
clientHandle = new EventWaitHandle(false, EventResetMode.AutoReset);
if ((size & 3) == 0 && size >= sizeof(int) * 3) TmphThreadPool.TinyPool.FastStart(read, null, null);
else
{
Dispose();
physical.dataError();
}
}
/// <summary>
/// 设置数据库物理层
/// </summary>
/// <param name="fileName">数据文件名</param>
/// <param name="physical">数据库物理层</param>
public void Set(string fileName, TmphPhysical physical)
{
FileName = fileName;
Physical = physical;
}
/// <summary>
/// 清除数据库物理层
/// </summary>
/// <param name="identity">索引编号</param>
public void Clear()
{
Physical = null;
FileName.Null();
++Identity;
}
/// <summary>
/// 打开数据库
/// </summary>
/// <param name="fileName">数据文件名</param>
/// <returns>数据库物理层初始化信息</returns>
internal TmphPhysicalServer.TmphPhysicalIdentity Open(string fileName)
{
var physicalInfo = new TmphPhysicalServer.TmphPhysicalIdentity
{
Identity = new TmphPhysicalServer.TmphTimeIdentity { TimeTick = 0, Index = -1 }
};
if (isDisposed == 0)
{
TmphHashString key = fileName;
TmphInterlocked.NoCheckCompareSetSleep0(ref physicalLock);
try
{
if (!fileNameIndexs.ContainsKey(key))
fileNameIndexs.Add(key, physicalInfo.Identity.Index = newIndex());
}
finally
{
physicalLock = 0;
}
if (physicalInfo.Identity.Index != -1)
{
try
{
var physical = new TmphPhysical(fileName, false);
if (!physical.IsDisposed)
{
TmphInterlocked.NoCheckCompareSetSleep0(ref physicalLock);
physicals[physicalInfo.Identity.Index].Set(fileName, physical);
physicalLock = 0;
physicalInfo.Identity.Identity = physicals[physicalInfo.Identity.Index].Identity;
physicalInfo.Identity.TimeTick = TmphPub.StartTime.Ticks;
physicalInfo.IsLoader = physical.IsLoader;
}
}
finally
{
if (physicalInfo.Identity.TimeTick == 0)
{
TmphInterlocked.NoCheckCompareSetSleep0(ref physicalLock);
try
{
fileNameIndexs.Remove(key);
}
finally
{
physicalLock = 0;
}
}
}
}
}
return physicalInfo;
}
