Interrupt handlers have a multitude of functions, which vary based on what triggered the interrupt and the speed at which the interrupt handler completes its task.
32.
Interrupt handlers have a multitude of functions, which vary based on what triggered the interrupt and the speed at which the interrupt handler completes its task.
33.
The core component permits installation of very low latency interrupt handlers that cannot be delayed or preempted by Linux itself and some low level synchronization and interrupt control routines.
34.
The ROMs interfered with the operation of standard CP / M, which assumed it could write the memory near location 0, in particular the interrupt handler pointers.
35.
In contrast, global data structures protected by mutual exclusion cannot safely be accessed in an interrupt handler, as the preempted thread may be the one holding the lock.
36.
When Adeos encounters a domain that is accepting interrupts it summons its interrupt handler after having set the required CPU environment and stack content for the interrupt handler to operate correctly.
37.
When Adeos encounters a domain that is accepting interrupts it summons its interrupt handler after having set the required CPU environment and stack content for the interrupt handler to operate correctly.
38.
Interrupt handlers are initiated by either hardware interrupts or software interrupt instructions and are used for servicing hardware devices and transitions between protected modes of operation, such as system calls.
39.
Other tasks may include switching back to PowerPC mode, if necessary, upon completion of the interrupt handler, and mapping the Macintosh virtual memory system to the PowerPC hardware.
40.
Another typical use is to generate periodic interrupts by dividing the output of a crystal oscillator and having an interrupt handler count the interrupts in order for a processor to keep time.
