tw_timer_template.c File Reference

TW timer implementation TEMPLATE ONLY, do not compile directly. More...

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Functions
static u32 TW()	make_internal_timer_handle (u32 pool_index, u32 timer_id)
static void	timer_addhead (TWT(tw_timer) *pool, u32 head_index, u32 new_index)
static void	timer_remove (TWT(tw_timer) *pool, TWT(tw_timer) *elt)
static void	timer_add (TWT(tw_timer_wheel) *tw, TWT(tw_timer) *t, u64 interval)
u32 TW()	tw_timer_start (TWT(tw_timer_wheel) *tw, u32 user_id, u32 timer_id, u64 interval)
	Start a Tw Timer. More...
void TW()	tw_timer_stop (TWT(tw_timer_wheel) *tw, u32 handle)
	Stop a tw timer. More...
int TW()	tw_timer_handle_is_free (TWT(tw_timer_wheel) *tw, u32 handle)
void TW()	tw_timer_update (TWT(tw_timer_wheel) *tw, u32 handle, u64 interval)
	Update a tw timer. More...
void TW()	tw_timer_wheel_init (TWT(tw_timer_wheel) *tw, void *expired_timer_callback, f64 timer_interval_in_seconds, u32 max_expirations)
	Initialize a tw timer wheel template instance. More...
void TW()	tw_timer_wheel_free (TWT(tw_timer_wheel) *tw)
	Free a tw timer wheel template instance. More...
static u32 *TW()	tw_timer_expire_timers_internal (TWT(tw_timer_wheel) *tw, f64 now, u32 *callback_vector_arg)
	Advance a tw timer wheel. More...
u32 *TW()	tw_timer_expire_timers (TWT(tw_timer_wheel) *tw, f64 now)
u32 *TW()	tw_timer_expire_timers_vec (TWT(tw_timer_wheel) *tw, f64 now, u32 *vec)

Detailed Description

TW timer implementation TEMPLATE ONLY, do not compile directly.

Definition in file tw_timer_template.c.

Function Documentation

make_internal_timer_handle()

static u32 TW() make_internal_timer_handle ( u32  pool_index, u32  timer_id  )

inlinestatic

Definition at line 103 of file tw_timer_template.c.

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timer_add()

static void timer_add ( TWT(tw_timer_wheel) *  tw, TWT(tw_timer) *  t, u64  interval  )

inlinestatic

Definition at line 161 of file tw_timer_template.c.

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timer_addhead()

static void timer_addhead ( TWT(tw_timer) *  pool, u32  head_index, u32  new_index  )

inlinestatic

Definition at line 119 of file tw_timer_template.c.

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timer_remove()

static void timer_remove ( TWT(tw_timer) *  pool, TWT(tw_timer) *  elt  )

inlinestatic

Definition at line 145 of file tw_timer_template.c.

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tw_timer_expire_timers()

u32* TW() tw_timer_expire_timers	(	TWT(tw_timer_wheel) *	tw,
		f64	now
	)

Definition at line 813 of file tw_timer_template.c.

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tw_timer_expire_timers_internal()

static u32* TW() tw_timer_expire_timers_internal ( TWT(tw_timer_wheel) *  tw, f64  now, u32 *  callback_vector_arg  )

inlinestatic

Advance a tw timer wheel.

Calls the expired timer callback as needed. This routine should be called once every timer_interval seconds

Parameters

tw_timer_wheel_t	* tw timer wheel template instance pointer
f64	now the current time, e.g. from vlib_time_now(vm)

Returns

u32 * vector of expired user handles

Definition at line 503 of file tw_timer_template.c.

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tw_timer_expire_timers_vec()

u32* TW() tw_timer_expire_timers_vec	(	TWT(tw_timer_wheel) *	tw,
		f64	now,
		u32 *	vec
	)

Definition at line 818 of file tw_timer_template.c.

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tw_timer_handle_is_free()

int TW() tw_timer_handle_is_free	(	TWT(tw_timer_wheel) *	tw,
		u32	handle
	)

Definition at line 379 of file tw_timer_template.c.

tw_timer_start()

u32 TW() tw_timer_start	(	TWT(tw_timer_wheel) *	tw,
		u32	user_id,
		u32	timer_id,
		u64	interval
	)

Start a Tw Timer.

Parameters

tw_timer_wheel_t	* tw timer wheel object pointer
u32	user_id user defined timer id, presumably for a tw session
u32	timer_id app-specific timer ID. 4 bits.
u64	interval timer interval in ticks

Returns

handle needed to cancel the timer

Definition at line 296 of file tw_timer_template.c.

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tw_timer_stop()

void TW() tw_timer_stop	(	TWT(tw_timer_wheel) *	tw,
		u32	handle
	)

Stop a tw timer.

Parameters

tw_timer_wheel_t	* tw timer wheel object pointer
u32	handle timer cancellation returned by tw_timer_start

Definition at line 352 of file tw_timer_template.c.

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tw_timer_update()

void TW() tw_timer_update	(	TWT(tw_timer_wheel) *	tw,
		u32	handle,
		u64	interval
	)

Update a tw timer.

Parameters

tw_timer_wheel_t	* tw timer wheel object pointer
u32	handle timer returned by tw_timer_start
u32	interval timer interval in ticks

Definition at line 390 of file tw_timer_template.c.

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tw_timer_wheel_free()

void TW() tw_timer_wheel_free

(

TWT(tw_timer_wheel) *

tw

)

Free a tw timer wheel template instance.

Parameters

tw_timer_wheel_t

* tw timer wheel object pointer

Definition at line 453 of file tw_timer_template.c.

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tw_timer_wheel_init()

void TW() tw_timer_wheel_init	(	TWT(tw_timer_wheel) *	tw,
		void *	expired_timer_callback,
		f64	timer_interval_in_seconds,
		u32	max_expirations
	)

Initialize a tw timer wheel template instance.

Parameters

tw_timer_wheel_t	* tw timer wheel object pointer
void	* expired_timer_callback. Passed a u32 * vector of expired timer handles. The callback is optional.
f64	timer_interval_in_seconds

Definition at line 407 of file tw_timer_template.c.

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