add

lib/isc/win32/time.c

@@ -0,0 +1,82 @@
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <errno.h>
+
+#include <windows.h>
+
+#include <isc/assertions.h>
+#include <isc/unexpect.h>
+#include <isc/time.h>
+
+isc_result
+isc_time_get(isc_time_t t) {
+	/*
+	 * Set *timep to the current absolute time (secs + nsec since
+	 * January 1, 1970).
+	 */
+	
+	REQUIRE(t != NULL);
+
+	/* XXX No nanoseconds! */
+	t->seconds = (unsigned long)time(NULL);
+	t->nanoseconds = 0;
+	return (ISC_R_SUCCESS);
+}
+
+int
+isc_time_compare(isc_time_t t1, isc_time_t t2) {
+	/*
+	 * Compare the times referenced by 't1' and 't2'
+	 */
+
+	REQUIRE(t1 != NULL && t2 != NULL);
+
+	if (t1->seconds < t2->seconds)
+		return (-1);
+	if (t1->seconds > t2->seconds)
+		return (1);
+	if (t1->nanoseconds < t2->nanoseconds)
+		return (-1);
+	if (t1->nanoseconds > t2->nanoseconds)
+		return (1);
+	return (0);
+}
+
+void
+isc_time_add(isc_time_t t1, isc_time_t t2, isc_time_t t3)
+{
+	/*
+	 * Add 't1' to 't2', storing the result in 't3'.
+	 */
+
+	REQUIRE(t1 != NULL && t2 != NULL && t3 != NULL);
+
+	t3->seconds = t1->seconds + t2->seconds;
+	t3->nanoseconds = t1->nanoseconds + t2->nanoseconds;
+	if (t3->nanoseconds > 1000000000) {
+		t3->seconds++;
+		t3->nanoseconds -= 1000000000;
+	}
+}
+
+void
+isc_time_subtract(isc_time_t t1, isc_time_t t2, isc_time_t t3) {
+	/*
+	 * Subtract 't2' from 't1', storing the result in 't1'.
+	 */
+
+	REQUIRE(t1 != NULL && t2 != NULL && t3 != NULL);
+	REQUIRE(isc_time_compare(t1, t2) >= 0);
+	
+	t3->seconds = t1->seconds - t2->seconds;
+	if (t1->nanoseconds >= t2->nanoseconds)
+		t3->nanoseconds = t1->nanoseconds - t2->nanoseconds;
+	else {
+		t3->nanoseconds = 1000000000 - t2->nanoseconds +
+			t1->nanoseconds;
+		t3->seconds--;
+	}
+}