+++ /dev/null
-/*
- * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
- *
- * The contents of this file constitute Original Code as defined in and are
- * subject to the Apple Public Source License Version 1.2 (the 'License').
- * You may not use this file except in compliance with the License. Please obtain
- * a copy of the License at http://www.apple.com/publicsource and read it before
- * using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
- * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
- * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
- * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
- * specific language governing rights and limitations under the License.
- */
-
-
-//
-// timeflow - abstract view of the flow of time
-//
-#include "timeflow.h"
-#include <sys/time.h>
-#include <math.h>
-
-
-namespace Security {
-namespace Time {
-
-
-//
-// Get "now"
-//
-Absolute now()
-{
- struct timeval tv;
- gettimeofday(&tv, NULL);
- return tv.tv_sec + double(tv.tv_usec) / 1E6;
-}
-
-
-//
-// OOL Conversions
-//
-Absolute::Absolute(const struct timeval &tv)
-{ mValue = tv.tv_sec + double(tv.tv_usec) / 1E6; }
-
-Absolute::Absolute(const struct timespec &tv)
-{ mValue = tv.tv_sec + double(tv.tv_nsec) / 1E9; }
-
-Absolute::operator struct timeval () const
-{
- struct timeval tv;
- if (mValue > LONG_MAX) {
- tv.tv_sec = LONG_MAX;
- tv.tv_usec = 0;
- } else {
- tv.tv_sec = int32_t(mValue);
- double intPart;
- tv.tv_usec = int32_t(modf(mValue, &intPart) * 1E6);
- }
- return tv;
-}
-
-Absolute::operator struct timespec () const
-{
- struct timespec ts;
- if (mValue > LONG_MAX) {
- ts.tv_sec = LONG_MAX;
- ts.tv_nsec = 0;
- } else {
- ts.tv_sec = time_t(mValue);
- double intPart;
- ts.tv_nsec = int32_t(modf(mValue, &intPart) * 1E9);
- }
- return ts;
-}
-
-struct timeval Interval::timevalInterval() const
-{
- struct timeval tv;
- if (mValue > LONG_MAX) {
- tv.tv_sec = LONG_MAX;
- tv.tv_usec = 0;
- } else if (mValue < 0) {
- tv.tv_sec = tv.tv_usec = 0;
- } else {
- tv.tv_sec = int32_t(mValue);
- double intPart;
- tv.tv_usec = int32_t(modf(mValue, &intPart) * 1E6);
- }
- return tv;
-}
-
-
-//
-// Estimate resolution at given time.
-//
-// BSD select(2) has theoretical microsecond resolution, but the underlying
-// Mach system deals with milliseconds, so we report that conservatively.
-// Sometime in the future when the sun is near collapse, residual resolution
-// of a double will drop under 1E-3, but we won't worry about that just yet.
-//
-Interval resolution(Absolute)
-{
- return 0.001;
-}
-
-
-} // end namespace Time
-} // end namespace Security