Improving IPC by kernel design
SOSP '93 Proceedings of the fourteenth ACM symposium on Operating systems principles
Reimplementing the Synthesis Kernel
Proceedings of the Workshop on Micro-kernels and Other Kernel Architectures
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A thread can make itself exclusive by disabling execution of all other threads running in the same address space. This brute force synchronization mechanism is useful in cases otherwise requiring numerous semaphore or mutex operations or when synchronizytion has to be added to existing software. Based on the L3 experiences, the paper describes how to implement exclusiveness by locking the relevant region of a task's address space. This optimistic method scales better than suspending and later reactivating all threads explicitly.