Interrupt Handler - Interrupt Threads

Interrupt Threads

Several operating systems - Solaris, NetBSD, Mac OS X, WinCE and FreeBSD, for example — use different scheme known as interrupt threads. An interrupt handler provided by the device driver is just a high-priority thread which runs with interrupts enabled and, more importantly, may block on mutex. This greatly simplifies locking in the kernel. In addition, an interrupt thread may be preempted by some higher-priority interrupt thread.

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Famous quotes containing the words interrupt and/or threads:

    “Never interrupt a murderer, madame.”
    —Walter Reisch (1903–1963)

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    suspended on invisible threads above the Site,”
    —Elizabeth Bishop (1911–1979)