On Tue, 2011-03-29 at 17:04 -0500, holtrk85 wrote: > I have a Windows based application that was written by my customer. > This application receives data via UDP, massages the data(proprietary > algorithm), then stuffs the output into a shared memory segment. This > app runs perfectly using Wine on my Linux box(Fedora 12). > > My own development environment is Java. I need to write a piece of > native C code that can get at the shared memory segment that is > created by my customer's application using shmat(). > > Does anyone have any idea how to tackle this issue? > Sounds like you'll need to use the JVM's JNI API. See your JDK's documentation set for the JNI documentation. Have you and your customer considered using a socket rather than shared memory to pass information between the programs? That is generally an easier interface to manage when Java needs to talk to a program written in another language. You don't say whether your code will always run under Linux or if it is intended to run in a Windows environment in future. If the latter you're definitely better off using sockets because the C code used to write the JNI extensions to the JVM is OS-specific, so it will not be portable between Linux and Windows. This thread appears more to do with Java than Wine, so I suggest you post any additional questions on comp.lang.java.programmer rather than here. Martin
