+++ /dev/null
-/*
- * Copyright (c) 2000-2001,2003-2004 Apple Computer, Inc. All Rights Reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
- * The 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.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-
-
-//
-// timeflow - abstract view of the flow of time
-//
-#include "timeflow.h"
-#include <stdint.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