Unit Instance

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        "The responsibility of the critical section API is to prevent context switches inside of a critical section. With a fully preemptive kernel, every `setrunqueue` of a thread other than the current thread is a preemption point. One implementation is for `critical_enter` to set a per-thread flag that is cleared by its counterpart. If `setrunqueue` is called with this flag set, it does not preempt regardless of the priority of the new thread relative to the current thread. However, since critical sections are used in spin mutexes to prevent context switches and multiple spin mutexes can be acquired, the critical section API must support nesting. For this reason the current implementation uses a nesting count instead of a single per-thread flag."
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        "The responsibility of the critical section API is to prevent context switches inside of a critical section. With a fully preemptive kernel, every `setrunqueue` of a thread other than the current thread is a preemption point. One implementation is for `critical_enter` to set a per-thread flag that is cleared by its counterpart. If `setrunqueue` is called with this flag set, it does not preempt regardless of the priority of the new thread relative to the current thread. However, since critical sections are used in spin mutexes to prevent context switches and multiple spin mutexes can be acquired, the critical section API must support nesting. For this reason the current implementation uses a nesting count instead of a single per-thread flag."
    ],
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    "note": "type: Plain text",
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    "state": 100,
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    "position": 36,
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    "num_words": 120,
    "source_unit": "https://translate-dev.freebsd.org/api/units/1134232/?format=api",
    "priority": 100,
    "id": 1134232,
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    "explanation": "",
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    "pending": false,
    "timestamp": "2021-05-23T13:16:46.898793Z"
}