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/*****************************************************************************
**
** Name: IntervalTimer.cpp
**
** Description: Asynchronous interval timer.
**
** Copyright (c) 2012, Broadcom Corp., All Rights Reserved.
** Proprietary and confidential.
**
*****************************************************************************/
#include "IntervalTimer.h"
#include "OverrideLog.h"
IntervalTimer::IntervalTimer()
{
mTimerId = NULL;
mCb = NULL;
}
bool IntervalTimer::set(int ms, TIMER_FUNC cb)
{
if (mTimerId == NULL)
{
if (cb == NULL)
return false;
if (!create(cb))
return false;
}
if (cb != mCb)
{
kill();
if (!create(cb))
return false;
}
int stat = 0;
struct itimerspec ts;
ts.it_value.tv_sec = ms / 1000;
ts.it_value.tv_nsec = (ms % 1000) * 1000000;
ts.it_interval.tv_sec = 0;
ts.it_interval.tv_nsec = 0;
stat = timer_settime(mTimerId, 0, &ts, 0);
if (stat == -1)
ALOGE("IntervalTimer::set: fail set timer");
return stat == 0;
}
IntervalTimer::~IntervalTimer()
{
kill();
}
void IntervalTimer::kill()
{
if (mTimerId == NULL)
return;
timer_delete(mTimerId);
mTimerId = NULL;
mCb = NULL;
}
bool IntervalTimer::create(TIMER_FUNC cb)
{
struct sigevent se;
int stat = 0;
/*
* Set the sigevent structure to cause the signal to be
* delivered by creating a new thread.
*/
se.sigev_notify = SIGEV_THREAD;
se.sigev_value.sival_ptr = &mTimerId;
se.sigev_notify_function = cb;
se.sigev_notify_attributes = NULL;
mCb = cb;
stat = timer_create(CLOCK_MONOTONIC, &se, &mTimerId);
if (stat == -1)
ALOGE("IntervalTimer::create: fail create timer");
return stat == 0;
}
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