public override void Close()
{
if (connectionClosed != null)
{
bool isClosed = connectionClosed.WaitOne(0);
if (!isClosed)
{
connectionClosed.Set();
connectionClosed.Close();
}
connectionClosed = null;
EventWaitHandle[] handles =
{ serverRead, serverWrote, clientRead, clientWrote };
for (int i = 0; i < handles.Length; i++)
{
if (handles[i] != null)
{
handles[i].Close();
}
}
if (data != null)
{
data.Dispose();
data = null;
}
}
}
private void SetupEvents()
{
string prefix = memoryName + "_" + connectNumber;
data = new SharedMemory(prefix + "_DATA", (IntPtr)BUFFERLENGTH);
serverWrote = EventWaitHandle.OpenExisting(prefix + "_SERVER_WROTE");
serverRead = EventWaitHandle.OpenExisting(prefix + "_SERVER_READ");
clientWrote = EventWaitHandle.OpenExisting(prefix + "_CLIENT_WROTE");
clientRead = EventWaitHandle.OpenExisting(prefix + "_CLIENT_READ");
connectionClosed = EventWaitHandle.OpenExisting(prefix + "_CONNECTION_CLOSED");
// tell the server we are ready
serverRead.Set();
}
private void GetConnectNumber(uint timeOut)
{
EventWaitHandle connectRequest;
try
{
connectRequest =
EventWaitHandle.OpenExisting(memoryName + "_CONNECT_REQUEST");
}
catch (Exception)
{
// If server runs as service, its shared memory is global
// And if connector runs in user session, it needs to prefix
// shared memory name with "Global\"
string prefixedMemoryName = @"Global\" + memoryName;
connectRequest =
EventWaitHandle.OpenExisting(prefixedMemoryName + "_CONNECT_REQUEST");
memoryName = prefixedMemoryName;
}
EventWaitHandle connectAnswer =
EventWaitHandle.OpenExisting(memoryName + "_CONNECT_ANSWER");
using (SharedMemory connectData =
new SharedMemory(memoryName + "_CONNECT_DATA", (IntPtr)4))
{
// now start the connection
if (!connectRequest.Set())
{
throw new MySqlException("Failed to open shared memory connection");
}
if (!connectAnswer.WaitOne((int)(timeOut * 1000), false))
{
throw new MySqlException("Timeout during connection");
}
connectNumber = Marshal.ReadInt32(connectData.View);
}
}
private void SetupEvents()
{
string prefix = memoryName + "_" + connectNumber;
data = new SharedMemory(prefix + "_DATA", (IntPtr)BUFFERLENGTH);
serverWrote = EventWaitHandle.OpenExisting(prefix + "_SERVER_WROTE");
serverRead = EventWaitHandle.OpenExisting(prefix + "_SERVER_READ");
clientWrote = EventWaitHandle.OpenExisting(prefix + "_CLIENT_WROTE");
clientRead = EventWaitHandle.OpenExisting(prefix + "_CLIENT_READ");
connectionClosed = EventWaitHandle.OpenExisting(prefix + "_CONNECTION_CLOSED");
// tell the server we are ready
serverRead.Set();
}
private void GetConnectNumber(uint timeOut)
{
EventWaitHandle connectRequest;
try
{
connectRequest =
EventWaitHandle.OpenExisting(memoryName + "_CONNECT_REQUEST");
}
catch (Exception)
{
// If server runs as service, its shared memory is global
// And if connector runs in user session, it needs to prefix
// shared memory name with "Global\"
string prefixedMemoryName = @"Global\" + memoryName;
connectRequest =
EventWaitHandle.OpenExisting(prefixedMemoryName + "_CONNECT_REQUEST");
memoryName = prefixedMemoryName;
}
EventWaitHandle connectAnswer =
EventWaitHandle.OpenExisting(memoryName + "_CONNECT_ANSWER");
using (SharedMemory connectData =
new SharedMemory(memoryName + "_CONNECT_DATA", (IntPtr)4))
{
// now start the connection
if (!connectRequest.Set())
throw new MySqlException("Failed to open shared memory connection");
if (!connectAnswer.WaitOne((int)(timeOut * 1000)))
throw new MySqlException("Timeout during connection");
connectNumber = connectData.ViewAccessor.ReadInt32(0);
}
}
public void Close()
{
if (connectionClosed != null)
{
bool isClosed = connectionClosed.WaitOne(0);
if (!isClosed)
{
connectionClosed.Set();
connectionClosed.Dispose();
}
connectionClosed = null;
EventWaitHandle[] handles =
{serverRead, serverWrote, clientRead, clientWrote};
for (int i = 0; i < handles.Length; i++)
{
if (handles[i] != null)
handles[i].Dispose();
}
if (data != null)
{
data.Dispose();
data = null;
}
}
}
