private void mmf_Length_init()
{
if (IsOwnerOfSharedMemory)
{
mmf_Length = new BufferReadWrite(Name + "_length", 16, true);
}
else
{
mmf_Length = new BufferReadWrite(Name + "_length", 16, false);
}
}
private void mmf_Update_Flag_init()
{
if (IsOwnerOfSharedMemory)
{
mmf_UpdateFlag = new BufferReadWrite(Name + "_flag_update", 8, true);
}
else
{
mmf_UpdateFlag = new BufferReadWrite(Name + "_flag_update", 8, false);
}
}
/// <summary>
/// get date time lastest database updated
/// </summary>
/// <returns></returns>
public long Update_DatetimeLastest()
{
long time = 0;
using (var read = new BufferReadWrite(Name + "_flag_update"))
{
read.Read((IntPtr pr) =>
{
byte[] bArray = new byte[8];
Marshal.Copy(pr, bArray, 0, 8);
time = BitConverter.ToInt64(bArray, 0);
});
}
return(time);
}
private void mmf_Length_update(int len_add)
{
int len = 0;
using (var read = new BufferReadWrite(Name + "_length"))
{
read.Read((IntPtr pr) =>
{
byte[] bArray = new byte[16];
Marshal.Copy(pr, bArray, 0, 16);
len = BitConverter.ToInt32(bArray, 0);
mmf_Length.Write((IntPtr pw) =>
{
len = len + len_add;
bArray = BitConverter.GetBytes(len);
Marshal.Copy(bArray, 0, pw, 1);
});
});
}
event_data_change();
}