From a6163888f3c56123b1db313743c6147ba498732c Mon Sep 17 00:00:00 2001
From: Yuval Adam <yuv.adm@gmail.com>
Date: Fri, 8 Aug 2014 14:42:07 +0300
Subject: Add third_party libs

---
 third_party/ptpd-1.1.0/src/dep/timer.c | 96 ++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 third_party/ptpd-1.1.0/src/dep/timer.c

(limited to 'third_party/ptpd-1.1.0/src/dep/timer.c')

diff --git a/third_party/ptpd-1.1.0/src/dep/timer.c b/third_party/ptpd-1.1.0/src/dep/timer.c
new file mode 100644
index 0000000..4bd7f80
--- /dev/null
+++ b/third_party/ptpd-1.1.0/src/dep/timer.c
@@ -0,0 +1,96 @@
+/**
+ * @file   timer.c
+ * @date   Wed Jun 23 09:41:26 2010
+ * 
+ * @brief  The timers which run the state machine.
+ * 
+ * Timers in the PTP daemon are run off of the signal system.  
+ */
+
+#include "../ptpd.h"
+
+#define TIMER_INTERVAL 1
+int	elapsed;
+
+void 
+catch_alarm(int sig)
+{
+	elapsed += TIMER_INTERVAL;
+
+	DBGV("catch_alarm: elapsed %d\n", elapsed);
+}
+
+void 
+initTimer(void)
+{
+	struct itimerval itimer;
+
+	DBG("initTimer\n");
+
+	signal(SIGALRM, SIG_IGN);
+
+	elapsed = 0;
+	itimer.it_value.tv_sec = itimer.it_interval.tv_sec = TIMER_INTERVAL;
+	itimer.it_value.tv_usec = itimer.it_interval.tv_usec = 0;
+
+	signal(SIGALRM, catch_alarm);
+	setitimer(ITIMER_REAL, &itimer, 0);
+}
+
+void 
+timerUpdate(IntervalTimer * itimer)
+{
+	int i, delta;
+
+	delta = elapsed;
+	elapsed = 0;
+
+	if (delta <= 0)
+		return;
+
+	for (i = 0; i < TIMER_ARRAY_SIZE; ++i) {
+		if (itimer[i].interval > 0 && (itimer[i].left -= delta) <= 0) {
+			itimer[i].left = itimer[i].interval;
+			itimer[i].expire = TRUE;
+			DBGV("timerUpdate: timer %u expired\n", i);
+		}
+	}
+}
+
+void 
+timerStop(UInteger16 index, IntervalTimer * itimer)
+{
+	if (index >= TIMER_ARRAY_SIZE)
+		return;
+
+	itimer[index].interval = 0;
+}
+
+void 
+timerStart(UInteger16 index, UInteger16 interval, IntervalTimer * itimer)
+{
+	if (index >= TIMER_ARRAY_SIZE)
+		return;
+
+	itimer[index].expire = FALSE;
+	itimer[index].left = interval;
+	itimer[index].interval = itimer[index].left;
+
+	DBGV("timerStart: set timer %d to %d\n", index, interval);
+}
+
+Boolean 
+timerExpired(UInteger16 index, IntervalTimer * itimer)
+{
+	timerUpdate(itimer);
+
+	if (index >= TIMER_ARRAY_SIZE)
+		return FALSE;
+
+	if (!itimer[index].expire)
+		return FALSE;
+
+	itimer[index].expire = FALSE;
+
+	return TRUE;
+}
-- 
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