Re: [ros-dev] Re: [ros-diffs] [ion] 19352: - Reimplement Fast Mutex implementation in HAL/NT to be compatible with the real implementation. (Fast Mutex needs to raise IRQL).

[Alex Ionescu]

Hartmut Birr wrote:
> The thread does wait at passive level. It has called
> ExEnterCriticalRegionAndAcquireFastMutexUnsafe. A other thread tries to
> terminate the waiting thread. KiInsertQueueApc does unwait the waiting
> thread, because the exit APC is a special APC.
> Hartmut

Hi,

The exit APC is a normal APC. Here is a very document on MSDN you can 
read, it answered a lot of my questions about locking, APCs and threads:
http://msdn.microsoft.com/library/en-us/dndevice/html/Locks_Sync.asp

Best regards,
Alex Ionescu