Difference between revisions of "KTimerAndWDTManager"
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| − | [[Category:Kernel | + | [[Category:Kernel interrupt events]] |
class [[KTimerAndWDTManager]] extends [[KSchedulableInterruptEvent|KSchedulableInterruptEvent]] | class [[KTimerAndWDTManager]] extends [[KSchedulableInterruptEvent|KSchedulableInterruptEvent]] | ||
Size : 0x28 bytes | Size : 0x28 bytes | ||
| − | This is the interrupt event object associated with SGIs #29 and #30 (timer and watchdog timer interrupts). It | + | This is the interrupt event object associated with SGIs #29 and #30 (timer and watchdog timer interrupts). It keeps tracks of the system uptime and manages [[KTimeableInterruptEvent]] instances. |
| − | The interrupt handler of this object updates its counter attributes and returns 0 if it was called with interuptID = | + | The interrupt handler of this object updates its counter attributes and returns 0 if it was called with interuptID = 31 (or any invalid interruptID value) (Watchdog timer underflow), otherwise it does nothing and returns the object itself (timer interrupt). |
There is only one instance of this class (everything uses the timer and watchdog timer of core1). | There is only one instance of this class (everything uses the timer and watchdog timer of core1). | ||
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| 0x10 | | 0x10 | ||
| − | | [[KTimeableInterruptEvent | + | | [[KTimeableInterruptEvent]] |
| − | | Instance of a | + | | Instance of a subclass of [[KTimeableInterruptEvent]] used to keep track of all instances of [[KTimeableInterruptEvent]]. |
| + | Also keeps tracks of the system uptime in CPU ticks, this is updated each time a [[KTimeableInterruptEvent]] is added to its list | ||
|- | |- | ||
| 0x20 | | 0x20 | ||
Latest revision as of 00:51, 12 February 2017
class KTimerAndWDTManager extends KSchedulableInterruptEvent
Size : 0x28 bytes
This is the interrupt event object associated with SGIs #29 and #30 (timer and watchdog timer interrupts). It keeps tracks of the system uptime and manages KTimeableInterruptEvent instances.
The interrupt handler of this object updates its counter attributes and returns 0 if it was called with interuptID = 31 (or any invalid interruptID value) (Watchdog timer underflow), otherwise it does nothing and returns the object itself (timer interrupt).
There is only one instance of this class (everything uses the timer and watchdog timer of core1).
| Offset | Type | Description |
|---|---|---|
| 0x0 | void ** | Pointer to vtable |
| 0x4 | KSynchronizationInterruptEvent * | Next interrupt event (associated with the current one) of type KSchedulableInterruptEvent. The linked list represented by this attribute can contain cycles |
| 0x8 | u32 | Watchdog timer underflow counter |
| 0xC | u32 | Previous value of the underflow counter |
| 0x10 | KTimeableInterruptEvent | Instance of a subclass of KTimeableInterruptEvent used to keep track of all instances of KTimeableInterruptEvent.
Also keeps tracks of the system uptime in CPU ticks, this is updated each time a KTimeableInterruptEvent is added to its list |
| 0x20 | KRecursiveLock | Recursive lock |