amxp_timer.c File Reference

#include <stdlib.h>
#include <amxc/amxc.h>
#include <amxc/amxc_macros.h>
#include <amxp/amxp.h>

Go to the source code of this file.

Macros
#define	_GNU_SOURCE

Functions
static void	amxp_timer_free_it (amxc_llist_it_t *it)
static struct timeval	amxp_timer_get_elapsed_time (void)
static void	amxp_timer_update_current (struct timeval *elapsed)
static void	amxp_timer_start_timer (amxp_timer_t *timer, struct timeval *smallest)
static bool	amxp_timer_update (amxp_timer_t *timer, struct timeval *smallest, struct timeval *elapsed)
void	amxp_timers_calculate (void)
	Caclulates the remaining time of all timers. More...
void	amxp_timers_check (void)
	Check all timers and call the callback function when the timer is in Timer expired state. More...
void	amxp_timers_enable (bool enable)
	Enable or disable all timers. More...
int	amxp_timer_new (amxp_timer_t **timer, amxp_timer_cb_t cb, void *priv)
	Allocate and initializes a new timer. More...
void	amxp_timer_delete (amxp_timer_t **timer)
	Deletes a timer. More...
int	amxp_timer_set_interval (amxp_timer_t *timer, unsigned int msec)
	Sets the interval of a timer in milli seconds. More...
unsigned int	amxp_timer_remaining_time (amxp_timer_t *timer)
	Get the remaining time of the timer. More...
int	amxp_timer_start (amxp_timer_t *timer, unsigned int timeout_msec)
	Starts or resets a timer. More...
int	amxp_timer_stop (amxp_timer_t *timer)
	Stops the timer. More...
amxp_timer_state_t	amxp_timer_get_state (amxp_timer_t *timer)
	Get the timer's state. More...
	CONSTRUCTOR_LVL (101)
	DESTRUCTOR_LVL (101)

Variables
static amxc_llist_t	timers
static struct timeval	current
static bool	timers_enabled = true

Macro Definition Documentation

_GNU_SOURCE

#define _GNU_SOURCE

Definition at line 56 of file amxp_timer.c.

Function Documentation

amxp_timer_free_it()

static void amxp_timer_free_it ( amxc_llist_it_t *  it )

static

Definition at line 69 of file amxp_timer.c.

                                                    {
    amxp_timer_t* timer = amxc_llist_it_get_data(it, amxp_timer_t, it);
    free(timer);
}

amxp_timer_get_elapsed_time()

static struct timeval amxp_timer_get_elapsed_time ( void  )

static

Definition at line 69 of file amxp_timer.c.

                                                        {
    struct itimerval ti;
    struct timeval elapsed = { 0, 0 };
 
    /* get the elapsed period */
    if(!timerisset(&current)) {
        return elapsed;
    }
 
    getitimer(ITIMER_REAL, &ti);
    if(timerisset(&ti.it_value)) {
        timersub(&current, &ti.it_value, &elapsed);
    } else {
        elapsed = current;
    }
 
    return elapsed;
}

amxp_timer_start_timer()

static void amxp_timer_start_timer ( amxp_timer_t *  timer, struct timeval *  smallest  )

static

Definition at line 101 of file amxp_timer.c.

                                                                                  {
    timer->state = amxp_timer_running;
    // *INDENT-OFF*
    if(!timerisset(smallest) || timercmp(smallest, &timer->timer.it_value, >)) {
        (*smallest) = timer->timer.it_value;
    }
    // *INDENT-ON*
}

amxp_timer_update()

static bool amxp_timer_update ( amxp_timer_t *  timer, struct timeval *  smallest, struct timeval *  elapsed  )

static

Definition at line 110 of file amxp_timer.c.

                                                       {
    timersub(&timer->timer.it_value, elapsed, &timer->timer.it_value);
    if(!((timer->timer.it_value.tv_sec < 0) ||
         !timerisset(&timer->timer.it_value))) {
 
        // *INDENT-OFF*
        if(!timerisset(smallest) ||
           timercmp(smallest, &timer->timer.it_value, >)) {
            (*smallest) = timer->timer.it_value;
        }
        // *INDENT-ON*
        return true;
    }
 
    if(timer->state != amxp_timer_expired) {
        timer->state = amxp_timer_expired;
    }
 
    if(timerisset(&timer->timer.it_interval)) {
        timer->timer.it_value = timer->timer.it_interval;
        // *INDENT-OFF*
        if(!timerisset(smallest) ||
           timercmp(smallest, &timer->timer.it_value, >)) {
            (*smallest) = timer->timer.it_value;
        }
        // *INDENT-ON*
        return true;
    }
 
    return false;
}

amxp_timer_update_current()

static void amxp_timer_update_current ( struct timeval *  elapsed )

static

Definition at line 93 of file amxp_timer.c.

                                                               {
    timersub(&current, elapsed, &current);
 
    if(current.tv_sec < 0) {
        timerclear(&current);
    }
}

CONSTRUCTOR_LVL()

CONSTRUCTOR_LVL

(

101

)

Definition at line 338 of file amxp_timer.c.

                                                        {
    amxc_llist_init(&timers);
}

DESTRUCTOR_LVL()

DESTRUCTOR_LVL

(

101

)

Definition at line 342 of file amxp_timer.c.

                                                          {
    amxc_llist_clean(&timers, amxp_timer_free_it);
}

Variable Documentation

current

struct timeval current

static

Definition at line 65 of file amxp_timer.c.

timers

amxc_llist_t timers

static

Definition at line 65 of file amxp_timer.c.

timers_enabled

bool timers_enabled = true

static

Definition at line 67 of file amxp_timer.c.