// Token: 0x0600010F RID: 271 RVA: 0x0000E37C File Offset: 0x0000C57C
protected void Init(string strName)
{
if (!System.IO.File.Exists(strName))
{
throw new Exception("未找到文件");
}
FileInfo fileInfo = new FileInfo(strName);
this.m_FileSize = fileInfo.Length;
this.m_fHandle = this.File.Open(strName);
if (strName.Length > 0)
{
this.m_hSharedMemoryFile = ShareMemory.CreateFileMapping(this.m_fHandle, IntPtr.Zero, 2u, 0u, (uint)this.m_FileSize, "mdata");
if (this.m_hSharedMemoryFile == IntPtr.Zero)
{
this.m_bAlreadyExist = false;
this.m_bInit = false;
throw new Exception("CreateFileMapping失败LastError=" + ShareMemory.GetLastError().ToString());
}
this.m_bInit = true;
if ((ulong)this.m_MemSize > (ulong)this.m_FileSize)
{
this.m_MemSize = (uint)this.m_FileSize;
}
this.m_pwData = ShareMemory.MapViewOfFile(this.m_hSharedMemoryFile, 4u, 0u, 0u, this.m_MemSize);
if (this.m_pwData == IntPtr.Zero)
{
this.m_bInit = false;
throw new Exception("m_hSharedMemoryFile失败LastError=" + ShareMemory.GetLastError().ToString() + " " + new Win32Exception(ShareMemory.GetLastError()).Message);
}
}
}
// Token: 0x06000114 RID: 276 RVA: 0x0000E5BA File Offset: 0x0000C7BA
public void Close()
{
if (this.m_bInit)
{
ShareMemory.UnmapViewOfFile(this.m_pwData);
ShareMemory.CloseHandle(this.m_hSharedMemoryFile);
this.File.Close();
}
}
// Token: 0x06000115 RID: 277 RVA: 0x0000E5E8 File Offset: 0x0000C7E8
public void Read(ref byte[] bytData, int lngAddr, int lngSize, bool Unmap)
{
if ((long)(lngAddr + lngSize) > (long)((ulong)this.m_MemSize))
{
throw new Exception("Read操作超出数据区");
}
if (this.m_bInit)
{
Marshal.Copy(this.m_pwData, bytData, lngAddr, lngSize);
if (Unmap)
{
bool flag = ShareMemory.UnmapViewOfFile(this.m_pwData);
if (flag)
{
this.m_pwData = IntPtr.Zero;
}
}
return;
}
throw new Exception("文件未初始化");
}
// Token: 0x06000112 RID: 274 RVA: 0x0000E4CC File Offset: 0x0000C6CC
public uint GetNextblock()
{
if (!this.m_bInit)
{
throw new Exception("文件未初始化。");
}
uint memberSize = this.GetMemberSize();
if (memberSize == 0u)
{
return(memberSize);
}
this.m_MemSize = memberSize;
this.m_pwData = ShareMemory.MapViewOfFile(this.m_hSharedMemoryFile, 4u, ShareMemory.GetHighWord((ulong)this.m_offsetBegin), ShareMemory.GetLowWord((ulong)this.m_offsetBegin), memberSize);
if (this.m_pwData == IntPtr.Zero)
{
this.m_bInit = false;
throw new Exception("映射文件块失败" + ShareMemory.GetLastError().ToString());
}
this.m_offsetBegin += (long)((ulong)memberSize);
return(memberSize);
}
// Token: 0x0600010B RID: 267 RVA: 0x0000E290 File Offset: 0x0000C490
public static uint GetPartitionsize()
{
ShareMemory.SYSTEM_INFO system_INFO;
ShareMemory.GetSystemInfo(out system_INFO);
return(system_INFO.allocationGranularity);
}
