Lennart Poettering
b6d5481b3d
Let's a concept of "rate limiting" to event sources: if specific event sources fire too often in some time interval temporarily take them offline, and take them back online once the interval passed. This is a simple scheme of avoiding starvation of event sources if some event source fires too often. This introduces the new conceptual states of "offline" and "online" for event sources: an event source is "online" only when enabled *and* not ratelimited, and offline in all other cases. An event source that is online hence has its fds registered in the epoll, its signals in the signalfd and so on.
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