Quelle alarmtimer.h Sprache: C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_ALARMTIMER_H
#define _LINUX_ALARMTIMER_H

#include <linux/time.h>
#include <linux/hrtimer.h>
#include <linux/timerqueue.h>

struct rtc_device;

enum alarmtimer_type {
ALARM_REALTIME,
ALARM_BOOTTIME,

/* Supported types end here */
ALARM_NUMTYPE,

/* Used for tracing information. No usable types. */
ALARM_REALTIME_FREEZER,
ALARM_BOOTTIME_FREEZER,
};

#define ALARMTIMER_STATE_INACTIVE 0x00
#define ALARMTIMER_STATE_ENQUEUED 0x01

/**
* struct alarm - Alarm timer structure
* @node: timerqueue node for adding to the event list this value
* also includes the expiration time.
* @timer: hrtimer used to schedule events while running
* @function: Function pointer to be executed when the timer fires.
* @type: Alarm type (BOOTTIME/REALTIME).
* @state: Flag that represents if the alarm is set to fire or not.
* @data: Internal data value.
*/
struct alarm {
struct timerqueue_node node;
struct hrtimer  timer;
void   (*function)(struct alarm *, ktime_t now);
enum alarmtimer_type type;
int   state;
void   *data;
};

void alarm_init(struct alarm *alarm, enum alarmtimer_type type,
  void (*function)(struct alarm *, ktime_t));
void alarm_start(struct alarm *alarm, ktime_t start);
void alarm_start_relative(struct alarm *alarm, ktime_t start);
void alarm_restart(struct alarm *alarm);
int alarm_try_to_cancel(struct alarm *alarm);
int alarm_cancel(struct alarm *alarm);

u64 alarm_forward(struct alarm *alarm, ktime_t now, ktime_t interval);
u64 alarm_forward_now(struct alarm *alarm, ktime_t interval);
ktime_t alarm_expires_remaining(const struct alarm *alarm);

#ifdef CONFIG_RTC_CLASS
/* Provide way to access the rtc device being used by alarmtimers */
struct rtc_device *alarmtimer_get_rtcdev(void);
#else
static inline struct rtc_device *alarmtimer_get_rtcdev(void) { return NULL; }
#endif

#endif

quality100%

¤ Dauer der Verarbeitung: 0.15 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.