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Diffstat (limited to 'Sluift/Watchdog.cpp')
-rw-r--r--Sluift/Watchdog.cpp50
1 files changed, 50 insertions, 0 deletions
diff --git a/Sluift/Watchdog.cpp b/Sluift/Watchdog.cpp
new file mode 100644
index 0000000..8b1c9ab
--- /dev/null
+++ b/Sluift/Watchdog.cpp
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2014 Remko Tronçon
+ * Licensed under the GNU General Public License.
+ * See the COPYING file for more information.
+ */
+
+#include <Sluift/Watchdog.h>
+
+#include <Sluift/globals.h>
+
+static const int INTERVAL_MS = 500;
+
+
+using namespace Swift;
+
+Watchdog::Watchdog(int timeout, TimerFactory* timerFactory) :
+ remainingTime(timeout),
+ timerFactory(timerFactory),
+ timedOut(false) {
+ Sluift::globals.interruptRequested = 0;
+
+ int nextTimeout = remainingTime >= 0 ? std::min(remainingTime, INTERVAL_MS) : INTERVAL_MS;
+
+ timer = timerFactory->createTimer(nextTimeout);
+ timer->onTick.connect(boost::bind(&Watchdog::handleTimerTick, this));
+ remainingTime -= nextTimeout;
+ timer->start();
+}
+
+Watchdog::~Watchdog() {
+ if (timer) {
+ timer->stop();
+ }
+}
+
+void Watchdog::handleTimerTick() {
+ if (Sluift::globals.interruptRequested || remainingTime == 0) {
+ timedOut = true;
+ }
+ else {
+ int nextTimeout = remainingTime >= 0 ? std::min(remainingTime, INTERVAL_MS) : INTERVAL_MS;
+ if (nextTimeout != INTERVAL_MS) {
+ timer->onTick.disconnect(boost::bind(&Watchdog::handleTimerTick, this));
+ timer = timerFactory->createTimer(nextTimeout);
+ timer->onTick.connect(boost::bind(&Watchdog::handleTimerTick, this));
+ }
+ remainingTime -= nextTimeout;
+ timer->start();
+ }
+}