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An important part of implementing device drivers is to control the interrupt facilities of the hardware platform and to program interrupt handlers. Current methods for handling interrupts in Java use a server thread waiting for the VM to signal an interrupt occurrence. It means that the interrupt is handled at a later time, which has some disadvantages. This paper presents constructs that allow interrupts to be handled directly and not at a later point decided by a scheduler. A desirable feature of the approach is that the authors do not require a native middelware layer but can handle interrupts entirely with Java code. The authors have implemented the approach using an interpreter and a Java processor, and give an example demonstrating its use.
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