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TABLE 2: Hook routines
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Hook routine
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When itýs called
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StartupHook()
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After the system startup code has called the StartOS() service and
the service has initialized all internal data, but prior to starting the
scheduler.
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PreTaskHook()
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By the scheduler, prior to a task being moved from the ready to
the running state. No task is running at the time of the call.
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PostTaskHook()
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After a task has been moved from running to ready, but prior to
the next task being started. No task is running at the time of the
call.
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ErrorHook()
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Whenever the OS detects an error. The error code is passed as an
argument.
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ShutdownHook()
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After the service ShutdownOS() has been called and the OS has
shut down all other services.
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