Action <string> dataAction;//数据委托
///<summary>
/// 初始化共享内存数据 创建一个共享内存
///</summary>
public void Init(Action <string> _dataAction, IPCType type, IPCType addrtype)
{
dataAction = _dataAction;
m_Write = new Semaphore(1, 1, IPCName.GetWriteMapName(type)); //开始的时候有一个可以写
m_Read = new Semaphore(0, 1, IPCName.GetReadMapName(type)); //没有数据可读
//mapLength = 10240000;
IntPtr hFile = new IntPtr(INVALID_HANDLE_VALUE);
handle = CreateFileMapping(hFile, 0, PAGE_READWRITE, 0, IPCName.mapLength, IPCName.GetshareMemoryName(type));
addr = MapViewOfFile(handle, IPCName.GetshareAddress(addrtype), 0, 0, 0);
//handle = OpenFileMapping(0x0002, 0, "shareMemory");
//addr = MapViewOfFile(handle, FILE_MAP_ALL_ACCESS, 0, 0, 0);
threadRed = new Thread(new ThreadStart(ReceiveData));
threadRed.Start();
}
private IntPtr addr; //共享内存地址
//uint mapLength=10240000; //共享内存长
//Thread threadRed;
public void WriteData(string data, IPCType type, IPCType addrtype)
{
try
{
m_Write = Semaphore.OpenExisting(IPCName.GetWriteMapName(type));
m_Read = Semaphore.OpenExisting(IPCName.GetReadMapName(type));
handle = OpenFileMapping(FILE_MAP_WRITE, 0, IPCName.GetshareMemoryName(type));
addr = MapViewOfFile(handle, IPCName.GetshareAddress(addrtype), 0, 0, 0);
m_Write.WaitOne();
byte[] sendStr = Encoding.Default.GetBytes(data + '\0');
//如果要是超长的话，应另外处理，最好是分配足够的内存
if (sendStr.Length < IPCName.mapLength)
{
Copy(sendStr, addr);
}
m_Read.Release();
}
catch
{
//throw new Exception("不存在系统信号量!");
}
}