Index: base/time_mac.cc |
diff --git a/base/time_mac.cc b/base/time_mac.cc |
deleted file mode 100644 |
index 91e9864952c9319c7fce5c19636d092ab7ddac8a..0000000000000000000000000000000000000000 |
--- a/base/time_mac.cc |
+++ /dev/null |
@@ -1,199 +0,0 @@ |
-// Copyright (c) 2012 The Chromium Authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-#include "base/time.h" |
- |
-#include <CoreFoundation/CFDate.h> |
-#include <CoreFoundation/CFTimeZone.h> |
-#include <mach/mach_time.h> |
-#include <sys/sysctl.h> |
-#include <sys/time.h> |
-#include <sys/types.h> |
-#include <time.h> |
- |
-#include "base/basictypes.h" |
-#include "base/logging.h" |
-#include "base/mac/scoped_cftyperef.h" |
- |
-namespace { |
- |
-uint64_t ComputeCurrentTicks() { |
-#if defined(OS_IOS) |
- // On iOS mach_absolute_time stops while the device is sleeping. Instead use |
- // now - KERN_BOOTTIME to get a time difference that is not impacted by clock |
- // changes. KERN_BOOTTIME will be updated by the system whenever the system |
- // clock change. |
- struct timeval boottime; |
- int mib[2] = {CTL_KERN, KERN_BOOTTIME}; |
- size_t size = sizeof(boottime); |
- int kr = sysctl(mib, arraysize(mib), &boottime, &size, NULL, 0); |
- DCHECK_EQ(KERN_SUCCESS, kr); |
- base::TimeDelta time_difference = base::Time::Now() - |
- (base::Time::FromTimeT(boottime.tv_sec) + |
- base::TimeDelta::FromMicroseconds(boottime.tv_usec)); |
- return time_difference.InMicroseconds(); |
-#else |
- uint64_t absolute_micro; |
- |
- static mach_timebase_info_data_t timebase_info; |
- if (timebase_info.denom == 0) { |
- // Zero-initialization of statics guarantees that denom will be 0 before |
- // calling mach_timebase_info. mach_timebase_info will never set denom to |
- // 0 as that would be invalid, so the zero-check can be used to determine |
- // whether mach_timebase_info has already been called. This is |
- // recommended by Apple's QA1398. |
- kern_return_t kr = mach_timebase_info(&timebase_info); |
- DCHECK_EQ(KERN_SUCCESS, kr); |
- } |
- |
- // mach_absolute_time is it when it comes to ticks on the Mac. Other calls |
- // with less precision (such as TickCount) just call through to |
- // mach_absolute_time. |
- |
- // timebase_info converts absolute time tick units into nanoseconds. Convert |
- // to microseconds up front to stave off overflows. |
- absolute_micro = |
- mach_absolute_time() / base::Time::kNanosecondsPerMicrosecond * |
- timebase_info.numer / timebase_info.denom; |
- |
- // Don't bother with the rollover handling that the Windows version does. |
- // With numer and denom = 1 (the expected case), the 64-bit absolute time |
- // reported in nanoseconds is enough to last nearly 585 years. |
- return absolute_micro; |
-#endif // defined(OS_IOS) |
-} |
- |
-} // namespace |
- |
-namespace base { |
- |
-// The Time routines in this file use Mach and CoreFoundation APIs, since the |
-// POSIX definition of time_t in Mac OS X wraps around after 2038--and |
-// there are already cookie expiration dates, etc., past that time out in |
-// the field. Using CFDate prevents that problem, and using mach_absolute_time |
-// for TimeTicks gives us nice high-resolution interval timing. |
- |
-// Time ----------------------------------------------------------------------- |
- |
-// Core Foundation uses a double second count since 2001-01-01 00:00:00 UTC. |
-// The UNIX epoch is 1970-01-01 00:00:00 UTC. |
-// Windows uses a Gregorian epoch of 1601. We need to match this internally |
-// so that our time representations match across all platforms. See bug 14734. |
-// irb(main):010:0> Time.at(0).getutc() |
-// => Thu Jan 01 00:00:00 UTC 1970 |
-// irb(main):011:0> Time.at(-11644473600).getutc() |
-// => Mon Jan 01 00:00:00 UTC 1601 |
-static const int64 kWindowsEpochDeltaSeconds = GG_INT64_C(11644473600); |
-static const int64 kWindowsEpochDeltaMilliseconds = |
- kWindowsEpochDeltaSeconds * Time::kMillisecondsPerSecond; |
- |
-// static |
-const int64 Time::kWindowsEpochDeltaMicroseconds = |
- kWindowsEpochDeltaSeconds * Time::kMicrosecondsPerSecond; |
- |
-// Some functions in time.cc use time_t directly, so we provide an offset |
-// to convert from time_t (Unix epoch) and internal (Windows epoch). |
-// static |
-const int64 Time::kTimeTToMicrosecondsOffset = kWindowsEpochDeltaMicroseconds; |
- |
-// static |
-Time Time::Now() { |
- return FromCFAbsoluteTime(CFAbsoluteTimeGetCurrent()); |
-} |
- |
-// static |
-Time Time::FromCFAbsoluteTime(CFAbsoluteTime t) { |
- if (t == 0) |
- return Time(); // Consider 0 as a null Time. |
- if (t == std::numeric_limits<CFAbsoluteTime>::max()) |
- return Max(); |
- return Time(static_cast<int64>( |
- (t + kCFAbsoluteTimeIntervalSince1970) * kMicrosecondsPerSecond) + |
- kWindowsEpochDeltaMicroseconds); |
-} |
- |
-CFAbsoluteTime Time::ToCFAbsoluteTime() const { |
- if (is_null()) |
- return 0; // Consider 0 as a null Time. |
- if (is_max()) |
- return std::numeric_limits<CFAbsoluteTime>::max(); |
- return (static_cast<CFAbsoluteTime>(us_ - kWindowsEpochDeltaMicroseconds) / |
- kMicrosecondsPerSecond) - kCFAbsoluteTimeIntervalSince1970; |
-} |
- |
-// static |
-Time Time::NowFromSystemTime() { |
- // Just use Now() because Now() returns the system time. |
- return Now(); |
-} |
- |
-// static |
-Time Time::FromExploded(bool is_local, const Exploded& exploded) { |
- CFGregorianDate date; |
- date.second = exploded.second + |
- exploded.millisecond / static_cast<double>(kMillisecondsPerSecond); |
- date.minute = exploded.minute; |
- date.hour = exploded.hour; |
- date.day = exploded.day_of_month; |
- date.month = exploded.month; |
- date.year = exploded.year; |
- |
- base::ScopedCFTypeRef<CFTimeZoneRef> time_zone( |
- is_local ? CFTimeZoneCopySystem() : NULL); |
- CFAbsoluteTime seconds = CFGregorianDateGetAbsoluteTime(date, time_zone) + |
- kCFAbsoluteTimeIntervalSince1970; |
- return Time(static_cast<int64>(seconds * kMicrosecondsPerSecond) + |
- kWindowsEpochDeltaMicroseconds); |
-} |
- |
-void Time::Explode(bool is_local, Exploded* exploded) const { |
- // Avoid rounding issues, by only putting the integral number of seconds |
- // (rounded towards -infinity) into a |CFAbsoluteTime| (which is a |double|). |
- int64 microsecond = us_ % kMicrosecondsPerSecond; |
- if (microsecond < 0) |
- microsecond += kMicrosecondsPerSecond; |
- CFAbsoluteTime seconds = ((us_ - microsecond) / kMicrosecondsPerSecond) - |
- kWindowsEpochDeltaSeconds - |
- kCFAbsoluteTimeIntervalSince1970; |
- |
- base::ScopedCFTypeRef<CFTimeZoneRef> time_zone( |
- is_local ? CFTimeZoneCopySystem() : NULL); |
- CFGregorianDate date = CFAbsoluteTimeGetGregorianDate(seconds, time_zone); |
- // 1 = Monday, ..., 7 = Sunday. |
- int cf_day_of_week = CFAbsoluteTimeGetDayOfWeek(seconds, time_zone); |
- |
- exploded->year = date.year; |
- exploded->month = date.month; |
- exploded->day_of_week = cf_day_of_week % 7; |
- exploded->day_of_month = date.day; |
- exploded->hour = date.hour; |
- exploded->minute = date.minute; |
- // Make sure seconds are rounded down towards -infinity. |
- exploded->second = floor(date.second); |
- // Calculate milliseconds ourselves, since we rounded the |seconds|, making |
- // sure to round towards -infinity. |
- exploded->millisecond = |
- (microsecond >= 0) ? microsecond / kMicrosecondsPerMillisecond : |
- (microsecond - kMicrosecondsPerMillisecond + 1) / |
- kMicrosecondsPerMillisecond; |
-} |
- |
-// TimeTicks ------------------------------------------------------------------ |
- |
-// static |
-TimeTicks TimeTicks::Now() { |
- return TimeTicks(ComputeCurrentTicks()); |
-} |
- |
-// static |
-TimeTicks TimeTicks::HighResNow() { |
- return Now(); |
-} |
- |
-// static |
-TimeTicks TimeTicks::NowFromSystemTraceTime() { |
- return HighResNow(); |
-} |
- |
-} // namespace base |