Some bugs reported by Francis Dupin corrected.
#include <stdlib.h>
#include <sys/time.h>
#include <pthread.h>
#include <signal.h>
#include "applicfg.h"
#include "can_driver.h"
#include "timer.h"
pthread_mutex_t CanFestival_mutex = PTHREAD_MUTEX_INITIALIZER;
TASK_HANDLE TimerLoopThread;
TIMEVAL last_time_set = TIMEVAL_MAX;
struct timeval last_sig;
timer_t timer;
void EnterMutex(void)
{
pthread_mutex_lock(&CanFestival_mutex);
}
void LeaveMutex(void)
{
pthread_mutex_unlock(&CanFestival_mutex);
}
void timer_notify(int val)
{
gettimeofday(&last_sig,NULL);
EnterMutex();
TimeDispatch();
LeaveMutex();
// printf("getCurrentTime() return=%u\n", p.tv_usec);
}
void initTimer(void)
{
struct sigevent sigev;
// Take first absolute time ref.
gettimeofday(&last_sig,NULL);
memset (&sigev, 0, sizeof (struct sigevent));
sigev.sigev_value.sival_int = 0;
sigev.sigev_notify = SIGEV_THREAD;
sigev.sigev_notify_attributes = NULL;
sigev.sigev_notify_function = timer_notify;
timer_create (CLOCK_REALTIME, &sigev, &timer);
}
void StopTimerLoop(void)
{
timer_delete (timer);
}
void StartTimerLoop(TimerCallback_t init_callback)
{
initTimer();
// At first, TimeDispatch will call init_callback.
SetAlarm(NULL, 0, init_callback, 0, 0);
}
void ReceiveLoop(void* arg)
{
canReceiveLoop((CAN_HANDLE)arg);
}
void CreateReceiveTask(CAN_HANDLE fd0, TASK_HANDLE* Thread)
{
pthread_create(Thread, NULL, (void *)&ReceiveLoop, (void*)fd0);
}
void WaitReceiveTaskEnd(TASK_HANDLE *Thread)
{
pthread_kill(*Thread, SIGTERM);
pthread_join(*Thread, NULL);
}
#define maxval(a,b) ((a>b)?a:b)
void setTimer(TIMEVAL value)
{
// printf("setTimer(TIMEVAL value=%d)\n", value);
// TIMEVAL is us whereas setitimer wants ns...
long tv_nsec = 1000 * (maxval(value,1)%1000000);
time_t tv_sec = value/1000000;
struct itimerspec timerValues;
timerValues.it_value.tv_sec = tv_sec;
timerValues.it_value.tv_nsec = tv_nsec;
timerValues.it_interval.tv_sec = 0;
timerValues.it_interval.tv_nsec = 0;
timer_settime (timer, 0, &timerValues, NULL);
}
TIMEVAL getElapsedTime(void)
{
struct timeval p;
gettimeofday(&p,NULL);
// printf("getCurrentTime() return=%u\n", p.tv_usec);
return (p.tv_sec - last_sig.tv_sec)* 1000000 + p.tv_usec - last_sig.tv_usec;
}