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/*************************************************************************
> File Name: rt_tmr.c
> Author:
> Mail:
> Created Time: 2018年09月19日 星期三 15时57分58秒
************************************************************************/
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <assert.h>
#include <sys/time.h>
#include <stdint.h>
#include <signal.h>
#include "rt_stdlib.h"
#include "rt_sync.h"
#include "rt_string.h"
#include "rt_common.h"
static int init;
enum {
ALLOWED,
FORBIDDEN
};
enum tmr_type{
TMR_PERIODIC,
TMR_ASHOT
};
enum tmr_status{
TMR_STOPPED,
TMR_STARTED
};
struct tmr_task{
rt_pthread pid;
rt_pthread_attr *attr;
void * (*routine)(void *);
};
struct rt_timer_t{
#define TMR_INVALID -1
int module;
/** unique id */
uint32_t uid;
/** Make sure that allocate desc member with malloc like function. */
char *desc;
/** in ms */
int64_t interval;
int64_t curr_ticks;
enum tmr_type type;
enum tmr_status status;
void (*routine)(uint32_t uid, int argc, char **argv);
int argc;
char **argv;
int recycle;
};
struct rt_timer_t *_this;
static volatile atomic64_t g_sys_cur_ticks = ATOMIC_INIT(0);
struct rt_timer_t *
tmr_set(uint32_t uid,
void (*proc)(struct rt_timer_t *t))
{
uid = uid;
if(likely(proc))
proc(_this);
return _this;
}
static void tmr_enable(struct rt_timer_t *t)
{
t->status = TMR_STARTED;
}
static void tmr_disable(struct rt_timer_t *t)
{
t->status = TMR_STOPPED;
}
void tmr_start(uint32_t uid)
{
tmr_set(uid, tmr_enable);
}
void tmr_stop(uint32_t uid)
{
tmr_set(uid, tmr_disable);
}
static void tmr_handler(int __attribute__((__unused__))sig)
{
int64_t old_ticks = 0;
old_ticks = atomic64_add(&g_sys_cur_ticks, 1);
if (likely(_this->status == TMR_STARTED)){
if (likely(old_ticks >= _this->curr_ticks)) {
_this->routine(_this->uid, _this->argc, _this->argv);
if (likely(TMR_ASHOT == _this->type))
_this->status= TMR_STOPPED;
else
_this->curr_ticks = old_ticks + _this->interval;
}
}
}
static void realtimer_init()
{
static struct itimerval tmr;
signal(SIGALRM, tmr_handler);
tmr.it_interval.tv_sec = 1;
tmr.it_interval.tv_usec = 0;
tmr.it_value.tv_sec = 1;
tmr.it_value.tv_usec = 0;
setitimer(ITIMER_REAL, &tmr, NULL);
}
static void
tmr_default_routine(uint32_t uid, int __attribute__((__unused__))argc,
char __attribute__((__unused__))**argv)
{
static int count[2] = {0};
count[uid%2] ++;
printf ("default timer [%u, %d] routine has occured\n", uid, count[uid%2]);
}
static __rt_always_inline__ void *
tmr_alloc()
{
struct rt_timer_t *t;
t = (struct rt_timer_t *)kmalloc(sizeof(struct rt_timer_t), MPF_CLR, -1);
if(likely(t)){
t->uid = TMR_INVALID;
t->routine = tmr_default_routine;
t->interval = 3; //tmr_internal_trans(3);
t->recycle = ALLOWED;
t->type = TMR_ASHOT;
t->status = TMR_STOPPED;
}
return t;
}
static void *
tmr_daemon(void __attribute__((__unused__))*pv_par )
{
FOREVER{
sleep(86400);
}
return NULL;
}
uint32_t tmr_create(int module,
const char *desc,
void (*routine)(uint32_t, int, char **), int argc, char **argv, int sec)
{
uint32_t uid = -1;
if(unlikely(!desc)){
goto finish;
}
_this = (struct rt_timer_t *)tmr_alloc();
if(unlikely(!_this)){
goto finish;
}
_this->module = module;
_this->desc = strdup(desc);
_this->curr_ticks = 0;
_this->interval = sec;
_this->routine = routine ? routine : tmr_default_routine;
_this->type = TMR_PERIODIC;
_this->uid = uid = 1;
_this->recycle = ALLOWED;
_this->status = TMR_STOPPED;
_this->argc = argc;
_this->argv = argv;
if(likely(init == 0)){
struct tmr_task *task = (struct tmr_task*)kmalloc(sizeof(struct tmr_task), MPF_CLR, -1);
if (likely(task)){
if (pthread_create(&task->pid, task->attr, tmr_daemon, NULL)){
goto finish;
}
if (pthread_detach(task->pid)){
goto finish;
}
}
init = 1;
realtimer_init();
}
finish:
return uid;
}
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