I've written some code that runs fine on Windows, but when someone tried to run it
under Mono, it
threw this exception:
Unhandled Exception: System.Threading.SynchronizationLockException: Not locked by this
thread
The code in question is pretty detailed, but the synchronization scheme boils down to
this: I have
two overlapping (avoiding the word "interlocked") synchronized regions, where I start,
the first,
start the second, exit the first, then exit the second, like this:
object monitor1 = new object();
object monitor2 = new object();
lock (monitor1) {
// ...
lock (monitor2) {
Monitor.Exit(monitor1);
// ...
}
}
I was thinking that this might be because the Mono implementation requires that if you
use the
Monitor class to release a lock, you must have used it to acquire the same lock (since
it must be
just holding a handle to the current thread set when you called the Enter() method),
and
Microsoft's .NET wasn't built that way. This brings up the question of whether this
behavior is
part of the platform specification. Any quick answers for this .NET newbie?
Thanks in advance,
Jeff
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