public AsyncMutex(string name)
{
// https://docs.microsoft.com/en-us/dotnet/api/system.threading.mutex?view=netframework-4.8
// On a server that is running Terminal Services, a named system mutex can have two levels of visibility.
// If its name begins with the prefix "Global\", the mutex is visible in all terminal server sessions.
// If its name begins with the prefix "Local\", the mutex is visible only in the terminal server session where it was created.
// In that case, a separate mutex with the same name can exist in each of the other terminal server sessions on the server.
// If you do not specify a prefix when you create a named mutex, it takes the prefix "Local\".
// Within a terminal server session, two mutexes whose names differ only by their prefixes are separate mutexes,
// and both are visible to all processes in the terminal server session.
// That is, the prefix names "Global\" and "Local\" describe the scope of the mutex name relative to terminal server sessions, not relative to processes.
ShortName = name;
FullName = $"Global\\4AA0E5A2-A94F-4B92-B962-F2BBC7A68323-{name}";
Mutex = null;
MutexThread = null;
// If we already have an asynclock with this fullname then just use it and do not create a new one.
lock (AsyncMutexesLock)
{
if (AsyncMutexes.TryGetValue(FullName, out AsyncMutex asyncMutex))
{
// Use the already existing lock.
AsyncLock = asyncMutex.AsyncLock;
}
else
{
// Create a new lock.
AsyncLock = new AsyncLock();
AsyncMutexes.Add(FullName, this);
}
}
ChangeStatus(AsyncLockStatus.StatusReady, AsyncLockStatus.StatusUninitialized);
}
