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/*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Watchdog.cpp
* Copyright (C) 2015 Simon Newton
*/
#include "ola/util/Watchdog.h"
namespace ola {
using ola::thread::MutexLocker;
Watchdog::Watchdog(unsigned int cycle_limit, Callback0<void> *reset_callback)
: m_limit(cycle_limit),
m_callback(reset_callback),
m_enabled(false),
m_count(0),
m_fired(false) {
}
void Watchdog::Enable() {
MutexLocker lock(&m_mu);
m_count = 0;
m_fired = false;
m_enabled = true;
}
void Watchdog::Disable() {
MutexLocker lock(&m_mu);
m_enabled = false;
m_fired = false;
}
void Watchdog::Kick() {
MutexLocker lock(&m_mu);
m_count = 0;
}
void Watchdog::Clock() {
bool run_callback = false;
{
MutexLocker lock(&m_mu);
if (!m_enabled) {
return;
}
m_count++;
if (m_count >= m_limit && !m_fired) {
m_fired = true;
run_callback = true;
}
}
if (run_callback) {
m_callback->Run();
}
}
} // namespace ola
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