Re: Serialize processes
Hans Stoessel wrote:
The problem is, that my "application" is a DLL. The methods from the DLL are
called from a Java application via JNI. And this Java application can have
more than one thread who call methods and the Java application can run more
than one time. This means there can be more than one process (instance of
the DLL) with more than one thread is running. The serialization of the
threads is not the problem, but the serializaion of the processes if I have
more than one instance of the DLL. The functionality in the DLL should run
only one time, not a few times at the same time.
Thanks
If you want the second instance to just wait until the first is
finished, use the named mutex technique referenced. All instances use
CreateMutex with the same name, and attempt to become the "owner" of the
mutex. Only the first instance receives ownership. Other instances use
WaitForSingleObject, which blocks (suspends) until they receive
ownership. When the first instance calls ReleaseMutex another instance
is permitted to run. Only one instance at a time (thread or process)
will own the mutex.
--
Scott McPhillips [VC++ MVP]
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