1b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// Use of this source code is governed by a BSD-style license that can be 3b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// found in the LICENSE file. 4b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 5b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include "base/time/time.h" 6b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 7b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include <CoreFoundation/CFDate.h> 8b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include <CoreFoundation/CFTimeZone.h> 9b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include <mach/mach.h> 10b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include <mach/mach_time.h> 11cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko#include <stddef.h> 12b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include <stdint.h> 13b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include <sys/sysctl.h> 14b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include <sys/time.h> 15b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include <sys/types.h> 16b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include <time.h> 17b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 18b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include "base/logging.h" 19b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include "base/mac/mach_logging.h" 20b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include "base/mac/scoped_cftyperef.h" 21b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include "base/mac/scoped_mach_port.h" 22cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko#include "base/macros.h" 23b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include "base/numerics/safe_conversions.h" 24cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko#include "build/build_config.h" 25b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 26b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratnamespace { 27b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 28b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratint64_t ComputeCurrentTicks() { 29b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#if defined(OS_IOS) 30b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // On iOS mach_absolute_time stops while the device is sleeping. Instead use 31b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // now - KERN_BOOTTIME to get a time difference that is not impacted by clock 32b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // changes. KERN_BOOTTIME will be updated by the system whenever the system 33b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // clock change. 34b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat struct timeval boottime; 35b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat int mib[2] = {CTL_KERN, KERN_BOOTTIME}; 36b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat size_t size = sizeof(boottime); 37b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat int kr = sysctl(mib, arraysize(mib), &boottime, &size, NULL, 0); 38b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat DCHECK_EQ(KERN_SUCCESS, kr); 39b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat base::TimeDelta time_difference = base::Time::Now() - 40b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat (base::Time::FromTimeT(boottime.tv_sec) + 41b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat base::TimeDelta::FromMicroseconds(boottime.tv_usec)); 42b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat return time_difference.InMicroseconds(); 43b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#else 44b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat static mach_timebase_info_data_t timebase_info; 45b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (timebase_info.denom == 0) { 46b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // Zero-initialization of statics guarantees that denom will be 0 before 47b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // calling mach_timebase_info. mach_timebase_info will never set denom to 48b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // 0 as that would be invalid, so the zero-check can be used to determine 49b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // whether mach_timebase_info has already been called. This is 50b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // recommended by Apple's QA1398. 51b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat kern_return_t kr = mach_timebase_info(&timebase_info); 52b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat MACH_DCHECK(kr == KERN_SUCCESS, kr) << "mach_timebase_info"; 53b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 54b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 55b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // mach_absolute_time is it when it comes to ticks on the Mac. Other calls 56b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // with less precision (such as TickCount) just call through to 57b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // mach_absolute_time. 58b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 59b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // timebase_info converts absolute time tick units into nanoseconds. Convert 60b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // to microseconds up front to stave off overflows. 61b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat base::CheckedNumeric<uint64_t> result( 62b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat mach_absolute_time() / base::Time::kNanosecondsPerMicrosecond); 63b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat result *= timebase_info.numer; 64b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat result /= timebase_info.denom; 65b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 66b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // Don't bother with the rollover handling that the Windows version does. 67b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // With numer and denom = 1 (the expected case), the 64-bit absolute time 68b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // reported in nanoseconds is enough to last nearly 585 years. 69b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat return base::checked_cast<int64_t>(result.ValueOrDie()); 70b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#endif // defined(OS_IOS) 71b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 72b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 73b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratint64_t ComputeThreadTicks() { 74b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#if defined(OS_IOS) 75b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat NOTREACHED(); 76b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat return 0; 77b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#else 78b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat base::mac::ScopedMachSendRight thread(mach_thread_self()); 79b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat mach_msg_type_number_t thread_info_count = THREAD_BASIC_INFO_COUNT; 80b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat thread_basic_info_data_t thread_info_data; 81b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 82b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (thread.get() == MACH_PORT_NULL) { 83b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat DLOG(ERROR) << "Failed to get mach_thread_self()"; 84b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat return 0; 85b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 86b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 87b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat kern_return_t kr = thread_info( 88cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko thread.get(), 89b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat THREAD_BASIC_INFO, 90b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat reinterpret_cast<thread_info_t>(&thread_info_data), 91b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat &thread_info_count); 92b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat MACH_DCHECK(kr == KERN_SUCCESS, kr) << "thread_info"; 93b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 94b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat base::CheckedNumeric<int64_t> absolute_micros( 95b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat thread_info_data.user_time.seconds); 96b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat absolute_micros *= base::Time::kMicrosecondsPerSecond; 97b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat absolute_micros += thread_info_data.user_time.microseconds; 98b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat return absolute_micros.ValueOrDie(); 99b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#endif // defined(OS_IOS) 100b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 101b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 102b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} // namespace 103b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 104b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratnamespace base { 105b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 106b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// The Time routines in this file use Mach and CoreFoundation APIs, since the 107b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// POSIX definition of time_t in Mac OS X wraps around after 2038--and 108b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// there are already cookie expiration dates, etc., past that time out in 109b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// the field. Using CFDate prevents that problem, and using mach_absolute_time 110b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// for TimeTicks gives us nice high-resolution interval timing. 111b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 112b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// Time ----------------------------------------------------------------------- 113b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 114b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// Core Foundation uses a double second count since 2001-01-01 00:00:00 UTC. 115b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// The UNIX epoch is 1970-01-01 00:00:00 UTC. 116b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// Windows uses a Gregorian epoch of 1601. We need to match this internally 117b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// so that our time representations match across all platforms. See bug 14734. 118b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// irb(main):010:0> Time.at(0).getutc() 119b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// => Thu Jan 01 00:00:00 UTC 1970 120b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// irb(main):011:0> Time.at(-11644473600).getutc() 121b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// => Mon Jan 01 00:00:00 UTC 1601 122cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenkostatic const int64_t kWindowsEpochDeltaSeconds = INT64_C(11644473600); 123b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 124b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// static 125cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenkoconst int64_t Time::kWindowsEpochDeltaMicroseconds = 126b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat kWindowsEpochDeltaSeconds * Time::kMicrosecondsPerSecond; 127b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 128b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// Some functions in time.cc use time_t directly, so we provide an offset 129b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// to convert from time_t (Unix epoch) and internal (Windows epoch). 130b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// static 131cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenkoconst int64_t Time::kTimeTToMicrosecondsOffset = kWindowsEpochDeltaMicroseconds; 132b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 133b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// static 134b8cf94937c52feb53b55c39e3f82094d27de464cDaniel EratTime Time::Now() { 135b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat return FromCFAbsoluteTime(CFAbsoluteTimeGetCurrent()); 136b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 137b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 138b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// static 139b8cf94937c52feb53b55c39e3f82094d27de464cDaniel EratTime Time::FromCFAbsoluteTime(CFAbsoluteTime t) { 140cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko static_assert(std::numeric_limits<CFAbsoluteTime>::has_infinity, 141cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko "CFAbsoluteTime must have an infinity value"); 142b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (t == 0) 143b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat return Time(); // Consider 0 as a null Time. 144b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (t == std::numeric_limits<CFAbsoluteTime>::infinity()) 145b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat return Max(); 146cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko return Time(static_cast<int64_t>((t + kCFAbsoluteTimeIntervalSince1970) * 147cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko kMicrosecondsPerSecond) + 148cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko kWindowsEpochDeltaMicroseconds); 149b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 150b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 151b8cf94937c52feb53b55c39e3f82094d27de464cDaniel EratCFAbsoluteTime Time::ToCFAbsoluteTime() const { 152cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko static_assert(std::numeric_limits<CFAbsoluteTime>::has_infinity, 153cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko "CFAbsoluteTime must have an infinity value"); 154b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (is_null()) 155b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat return 0; // Consider 0 as a null Time. 156b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (is_max()) 157b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat return std::numeric_limits<CFAbsoluteTime>::infinity(); 158b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat return (static_cast<CFAbsoluteTime>(us_ - kWindowsEpochDeltaMicroseconds) / 159b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat kMicrosecondsPerSecond) - kCFAbsoluteTimeIntervalSince1970; 160b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 161b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 162b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// static 163b8cf94937c52feb53b55c39e3f82094d27de464cDaniel EratTime Time::NowFromSystemTime() { 164b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // Just use Now() because Now() returns the system time. 165b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat return Now(); 166b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 167b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 168b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// static 169b8cf94937c52feb53b55c39e3f82094d27de464cDaniel EratTime Time::FromExploded(bool is_local, const Exploded& exploded) { 170b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat CFGregorianDate date; 171b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat date.second = exploded.second + 172b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat exploded.millisecond / static_cast<double>(kMillisecondsPerSecond); 173b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat date.minute = exploded.minute; 174b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat date.hour = exploded.hour; 175b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat date.day = exploded.day_of_month; 176b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat date.month = exploded.month; 177b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat date.year = exploded.year; 178b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 179b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat base::ScopedCFTypeRef<CFTimeZoneRef> time_zone( 180b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat is_local ? CFTimeZoneCopySystem() : NULL); 181b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat CFAbsoluteTime seconds = CFGregorianDateGetAbsoluteTime(date, time_zone) + 182b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat kCFAbsoluteTimeIntervalSince1970; 183cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko return Time(static_cast<int64_t>(seconds * kMicrosecondsPerSecond) + 184cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko kWindowsEpochDeltaMicroseconds); 185b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 186b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 187b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratvoid Time::Explode(bool is_local, Exploded* exploded) const { 188b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // Avoid rounding issues, by only putting the integral number of seconds 189b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // (rounded towards -infinity) into a |CFAbsoluteTime| (which is a |double|). 190cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko int64_t microsecond = us_ % kMicrosecondsPerSecond; 191b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (microsecond < 0) 192b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat microsecond += kMicrosecondsPerSecond; 193b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat CFAbsoluteTime seconds = ((us_ - microsecond) / kMicrosecondsPerSecond) - 194b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat kWindowsEpochDeltaSeconds - 195b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat kCFAbsoluteTimeIntervalSince1970; 196b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 197b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat base::ScopedCFTypeRef<CFTimeZoneRef> time_zone( 198b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat is_local ? CFTimeZoneCopySystem() : NULL); 199b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat CFGregorianDate date = CFAbsoluteTimeGetGregorianDate(seconds, time_zone); 200b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // 1 = Monday, ..., 7 = Sunday. 201b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat int cf_day_of_week = CFAbsoluteTimeGetDayOfWeek(seconds, time_zone); 202b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 203b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat exploded->year = date.year; 204b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat exploded->month = date.month; 205b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat exploded->day_of_week = cf_day_of_week % 7; 206b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat exploded->day_of_month = date.day; 207b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat exploded->hour = date.hour; 208b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat exploded->minute = date.minute; 209b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // Make sure seconds are rounded down towards -infinity. 210b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat exploded->second = floor(date.second); 211b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // Calculate milliseconds ourselves, since we rounded the |seconds|, making 212b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // sure to round towards -infinity. 213b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat exploded->millisecond = 214b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat (microsecond >= 0) ? microsecond / kMicrosecondsPerMillisecond : 215b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat (microsecond - kMicrosecondsPerMillisecond + 1) / 216b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat kMicrosecondsPerMillisecond; 217b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 218b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 219b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// TimeTicks ------------------------------------------------------------------ 220b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 221b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// static 222b8cf94937c52feb53b55c39e3f82094d27de464cDaniel EratTimeTicks TimeTicks::Now() { 223b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat return TimeTicks(ComputeCurrentTicks()); 224b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 225b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 226b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// static 227b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratbool TimeTicks::IsHighResolution() { 228b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat return true; 229b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 230b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 231b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// static 232b8cf94937c52feb53b55c39e3f82094d27de464cDaniel EratThreadTicks ThreadTicks::Now() { 233b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat return ThreadTicks(ComputeThreadTicks()); 234b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 235b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 236b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} // namespace base 237