zxfoundation.sys.timer.types Module Reference

Data Structures
struct	zxfoundation::sys::timer::kernel_timer
	Kernel timer descriptor. More...
struct	zxfoundation::sys::timer::timer_heap
	Fixed-capacity binary min-heap of kernel_timer pointers. More...

Enumerations
enum class	timer_mode : u8 { oneshot = 0 , periodic = 1 }
	Timer operating mode.

Typedefs
using	zxfoundation::sys::timer::timer_fn = auto (*)(void* data) noexcept -> void
	Timer callback signature.

Functions
	kernel_timer () noexcept=default
	Default constructor.
	kernel_timer (const kernel_timer &)=delete
	kernel_timer (kernel_timer &&)=delete
auto	operator= (const kernel_timer &)=delete
auto	operator= (kernel_timer &&)=delete
auto	operator= (const timer_heap &)=delete
auto	operator= (timer_heap &&)=delete
	timer_heap () noexcept=default
	Default constructor.
	timer_heap (const timer_heap &)=delete
	timer_heap (timer_heap &&)=delete

Variables
u8	_pad [5] {}
	Pad to nice 8-byte alignment.
bool	armed {false}
	true if currently in a CPU's heap.
timer_fn	callback {nullptr}
	Expiry callback.
u32	count {0}
	Number of active entries.
u16	cpu {0}
	CPU this timer is enqueued on.
void *	data {nullptr}
	Callback context.
u64	deadline_tod {0}
	Absolute TOD deadline (hardware clock units).
kernel_timer *	entries [TIMER_HEAP_CAPACITY] {}
	Heap-ordered array of timer pointers.
constexpr u16	zxfoundation::sys::timer::EXT_CODE_CLK_COMP = 0x1004
	EXT interrupt code for the clock comparator.
constexpr u16	zxfoundation::sys::timer::EXT_CODE_CPU_TIMER = 0x1005
	EXT interrupt code for the CPU timer (PoP §6-12).
u64	interval_tod {0}
	Re-arm interval for periodic timers (TOD units).
timer_mode	mode {timer_mode::oneshot}
	Oneshot or periodic.
constexpr u64	zxfoundation::sys::timer::TICK_INTERVAL_NS = 10'000'000ULL
	Tick interval: 10 ms expressed in nanoseconds.
constexpr u64	zxfoundation::sys::timer::TICK_INTERVAL_TOD = 40'960'000ULL
	Tick interval: 10 ms expressed in TOD clock units.
constexpr u32	zxfoundation::sys::timer::TIMER_HEAP_CAPACITY = 256
	Maximum number of timers in a single CPU's min-heap.

Files
file	zxfoundation/sys/timer.zcomponent/types.cxxm