Linked by nfeske on Thu 26th May 2011 11:41 UTC
OSNews, Generic OSes The concern for efficient and easy-to-use inter-process communication is prevalent among microkernel-based operating systems. Genode has always taken an unorthodox stance on this subject by disregarding the time-tested standard solution of using an IDL compiler in favour of sticking to raw C++ mechanisms. The new version 11.05 of the OS framework takes another leap by introducing a brand new API for implementing procedure calls across process boundaries, facilitating type safety and ease of use, yet still not relying on external tools. Furthermore, the platform support for the Fiasco.OC kernel has been extended to the complete feature set of the framework. The most significant new features are L4Linux (on Fiasco.OC), an experimental integration of GDB, ARM RealView PBX device drivers, and device I/O support for the MicroBlaze platform.
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A single memory shared by everything is a bottleneck in multiprocessor systems. Caches don't solve this problem, they only hide it behind the cache coherency protocol.

You can always have shared memory per process couple (sender-receiver).

"Going through the kernel" is only slow if you make it slow.

In modern 80x86 CPUs, it's very slow. It's also always slower than if you don't go through the kernel.

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