userspace/tools: use monotonic clock in load-virtex

Proper timeout will not work when clock is set to the past. It is unlikely that problem pop up here, but just to be safe. Problem simillar to bug 1164. Check commit: userspace/snmpd: bugfix 1164, replace time() with monotinic version Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

userspace/tools: use monotonic clock in load-virtex
Proper timeout will not work when clock is set to the past. It is unlikely that problem pop up here, but just to be safe. Problem simillar to bug 1164. Check commit: userspace/snmpd: bugfix 1164, replace time() with monotinic version Signed-off-by: Adam Wujek <adam.wujek@cern.ch>
14a94373 · Adam Wujek · 4f817bed · 14a94373
Commit 14a94373 authored Feb 15, 2016 by Adam Wujek 💬
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load-virtex.c userspace/tools/load-virtex.c +4 -4

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--- a/userspace/tools/load-virtex.c
+++ b/userspace/tools/load-virtex.c
@@ -88,12 +88,12 @@ static int pio_get(int port, int bit)

 static void ud(int usecs) /* horrible udelay thing without scheduling */
 {
-	struct timeval tv1, tv2;
-	gettimeofday(&tv1, NULL);
+	struct timespec tv1, tv2;
+	clock_gettime(CLOCK_MONOTONIC, &tv1);
 	do
-		gettimeofday(&tv2, NULL);
+		clock_gettime(CLOCK_MONOTONIC, &tv2);
 	while ((tv2.tv_sec - tv1.tv_sec) * 1000*1000
-	       + tv2.tv_usec - tv1.tv_usec < usecs);
+	       + (tv2.tv_nsec - tv1.tv_nsec) / 1000 < usecs);
 }