4.8 Interrupt Management Functions

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4.8 Interrupt Management Functions

Interrupt management functions are for de.ning and manipulating handlers for external interrupts and CPU exceptions.

An interrupt handler runs as a task-independent portion. System calls can be invoked in a task-independent portion in the same way as in a task portion, but the following restriction applies to system call issuing in a task-independent portion.

A system call that implicitly specifies the invoking task, or one that may put the invoking task in WAIT state cannot be issued. Error code E_CTX is returned in such cases.

During task-independent portion execution, task switching (dispatching) does not occur. If system call processing results in a dispatch request, the dispatch is delayed until processing leaves the task-independent portion. This is called delayed dispatching.

4.8 Interrupt Management Functions

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