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Side by Side Diff: base/time/time_mac.cc

Issue 1538743002: Switch to standard integer types in base/. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: DEPS roll too Created 4 years, 12 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "base/time/time.h" 5 #include "base/time/time.h"
6 6
7 #include <CoreFoundation/CFDate.h> 7 #include <CoreFoundation/CFDate.h>
8 #include <CoreFoundation/CFTimeZone.h> 8 #include <CoreFoundation/CFTimeZone.h>
9 #include <mach/mach.h> 9 #include <mach/mach.h>
10 #include <mach/mach_time.h> 10 #include <mach/mach_time.h>
11 #include <stddef.h>
11 #include <stdint.h> 12 #include <stdint.h>
12 #include <sys/sysctl.h> 13 #include <sys/sysctl.h>
13 #include <sys/time.h> 14 #include <sys/time.h>
14 #include <sys/types.h> 15 #include <sys/types.h>
15 #include <time.h> 16 #include <time.h>
16 17
17 #include "base/basictypes.h"
18 #include "base/logging.h" 18 #include "base/logging.h"
19 #include "base/mac/mach_logging.h" 19 #include "base/mac/mach_logging.h"
20 #include "base/mac/scoped_cftyperef.h" 20 #include "base/mac/scoped_cftyperef.h"
21 #include "base/mac/scoped_mach_port.h" 21 #include "base/mac/scoped_mach_port.h"
22 #include "base/macros.h"
22 #include "base/numerics/safe_conversions.h" 23 #include "base/numerics/safe_conversions.h"
24 #include "build/build_config.h"
23 25
24 namespace { 26 namespace {
25 27
26 int64_t ComputeCurrentTicks() { 28 int64_t ComputeCurrentTicks() {
27 #if defined(OS_IOS) 29 #if defined(OS_IOS)
28 // On iOS mach_absolute_time stops while the device is sleeping. Instead use 30 // On iOS mach_absolute_time stops while the device is sleeping. Instead use
29 // now - KERN_BOOTTIME to get a time difference that is not impacted by clock 31 // now - KERN_BOOTTIME to get a time difference that is not impacted by clock
30 // changes. KERN_BOOTTIME will be updated by the system whenever the system 32 // changes. KERN_BOOTTIME will be updated by the system whenever the system
31 // clock change. 33 // clock change.
32 struct timeval boottime; 34 struct timeval boottime;
(...skipping 77 matching lines...) Expand 10 before | Expand all | Expand 10 after
110 // Time ----------------------------------------------------------------------- 112 // Time -----------------------------------------------------------------------
111 113
112 // Core Foundation uses a double second count since 2001-01-01 00:00:00 UTC. 114 // Core Foundation uses a double second count since 2001-01-01 00:00:00 UTC.
113 // The UNIX epoch is 1970-01-01 00:00:00 UTC. 115 // The UNIX epoch is 1970-01-01 00:00:00 UTC.
114 // Windows uses a Gregorian epoch of 1601. We need to match this internally 116 // Windows uses a Gregorian epoch of 1601. We need to match this internally
115 // so that our time representations match across all platforms. See bug 14734. 117 // so that our time representations match across all platforms. See bug 14734.
116 // irb(main):010:0> Time.at(0).getutc() 118 // irb(main):010:0> Time.at(0).getutc()
117 // => Thu Jan 01 00:00:00 UTC 1970 119 // => Thu Jan 01 00:00:00 UTC 1970
118 // irb(main):011:0> Time.at(-11644473600).getutc() 120 // irb(main):011:0> Time.at(-11644473600).getutc()
119 // => Mon Jan 01 00:00:00 UTC 1601 121 // => Mon Jan 01 00:00:00 UTC 1601
120 static const int64 kWindowsEpochDeltaSeconds = INT64_C(11644473600); 122 static const int64_t kWindowsEpochDeltaSeconds = INT64_C(11644473600);
121 123
122 // static 124 // static
123 const int64 Time::kWindowsEpochDeltaMicroseconds = 125 const int64_t Time::kWindowsEpochDeltaMicroseconds =
124 kWindowsEpochDeltaSeconds * Time::kMicrosecondsPerSecond; 126 kWindowsEpochDeltaSeconds * Time::kMicrosecondsPerSecond;
125 127
126 // Some functions in time.cc use time_t directly, so we provide an offset 128 // Some functions in time.cc use time_t directly, so we provide an offset
127 // to convert from time_t (Unix epoch) and internal (Windows epoch). 129 // to convert from time_t (Unix epoch) and internal (Windows epoch).
128 // static 130 // static
129 const int64 Time::kTimeTToMicrosecondsOffset = kWindowsEpochDeltaMicroseconds; 131 const int64_t Time::kTimeTToMicrosecondsOffset = kWindowsEpochDeltaMicroseconds;
130 132
131 // static 133 // static
132 Time Time::Now() { 134 Time Time::Now() {
133 return FromCFAbsoluteTime(CFAbsoluteTimeGetCurrent()); 135 return FromCFAbsoluteTime(CFAbsoluteTimeGetCurrent());
134 } 136 }
135 137
136 // static 138 // static
137 Time Time::FromCFAbsoluteTime(CFAbsoluteTime t) { 139 Time Time::FromCFAbsoluteTime(CFAbsoluteTime t) {
138 static_assert(std::numeric_limits<CFAbsoluteTime>::has_infinity, 140 static_assert(std::numeric_limits<CFAbsoluteTime>::has_infinity,
139 "CFAbsoluteTime must have an infinity value"); 141 "CFAbsoluteTime must have an infinity value");
140 if (t == 0) 142 if (t == 0)
141 return Time(); // Consider 0 as a null Time. 143 return Time(); // Consider 0 as a null Time.
142 if (t == std::numeric_limits<CFAbsoluteTime>::infinity()) 144 if (t == std::numeric_limits<CFAbsoluteTime>::infinity())
143 return Max(); 145 return Max();
144 return Time(static_cast<int64>( 146 return Time(static_cast<int64_t>((t + kCFAbsoluteTimeIntervalSince1970) *
145 (t + kCFAbsoluteTimeIntervalSince1970) * kMicrosecondsPerSecond) + 147 kMicrosecondsPerSecond) +
146 kWindowsEpochDeltaMicroseconds); 148 kWindowsEpochDeltaMicroseconds);
147 } 149 }
148 150
149 CFAbsoluteTime Time::ToCFAbsoluteTime() const { 151 CFAbsoluteTime Time::ToCFAbsoluteTime() const {
150 static_assert(std::numeric_limits<CFAbsoluteTime>::has_infinity, 152 static_assert(std::numeric_limits<CFAbsoluteTime>::has_infinity,
151 "CFAbsoluteTime must have an infinity value"); 153 "CFAbsoluteTime must have an infinity value");
152 if (is_null()) 154 if (is_null())
153 return 0; // Consider 0 as a null Time. 155 return 0; // Consider 0 as a null Time.
154 if (is_max()) 156 if (is_max())
155 return std::numeric_limits<CFAbsoluteTime>::infinity(); 157 return std::numeric_limits<CFAbsoluteTime>::infinity();
156 return (static_cast<CFAbsoluteTime>(us_ - kWindowsEpochDeltaMicroseconds) / 158 return (static_cast<CFAbsoluteTime>(us_ - kWindowsEpochDeltaMicroseconds) /
(...skipping 14 matching lines...) Expand all
171 date.minute = exploded.minute; 173 date.minute = exploded.minute;
172 date.hour = exploded.hour; 174 date.hour = exploded.hour;
173 date.day = exploded.day_of_month; 175 date.day = exploded.day_of_month;
174 date.month = exploded.month; 176 date.month = exploded.month;
175 date.year = exploded.year; 177 date.year = exploded.year;
176 178
177 base::ScopedCFTypeRef<CFTimeZoneRef> time_zone( 179 base::ScopedCFTypeRef<CFTimeZoneRef> time_zone(
178 is_local ? CFTimeZoneCopySystem() : NULL); 180 is_local ? CFTimeZoneCopySystem() : NULL);
179 CFAbsoluteTime seconds = CFGregorianDateGetAbsoluteTime(date, time_zone) + 181 CFAbsoluteTime seconds = CFGregorianDateGetAbsoluteTime(date, time_zone) +
180 kCFAbsoluteTimeIntervalSince1970; 182 kCFAbsoluteTimeIntervalSince1970;
181 return Time(static_cast<int64>(seconds * kMicrosecondsPerSecond) + 183 return Time(static_cast<int64_t>(seconds * kMicrosecondsPerSecond) +
182 kWindowsEpochDeltaMicroseconds); 184 kWindowsEpochDeltaMicroseconds);
183 } 185 }
184 186
185 void Time::Explode(bool is_local, Exploded* exploded) const { 187 void Time::Explode(bool is_local, Exploded* exploded) const {
186 // Avoid rounding issues, by only putting the integral number of seconds 188 // Avoid rounding issues, by only putting the integral number of seconds
187 // (rounded towards -infinity) into a |CFAbsoluteTime| (which is a |double|). 189 // (rounded towards -infinity) into a |CFAbsoluteTime| (which is a |double|).
188 int64 microsecond = us_ % kMicrosecondsPerSecond; 190 int64_t microsecond = us_ % kMicrosecondsPerSecond;
189 if (microsecond < 0) 191 if (microsecond < 0)
190 microsecond += kMicrosecondsPerSecond; 192 microsecond += kMicrosecondsPerSecond;
191 CFAbsoluteTime seconds = ((us_ - microsecond) / kMicrosecondsPerSecond) - 193 CFAbsoluteTime seconds = ((us_ - microsecond) / kMicrosecondsPerSecond) -
192 kWindowsEpochDeltaSeconds - 194 kWindowsEpochDeltaSeconds -
193 kCFAbsoluteTimeIntervalSince1970; 195 kCFAbsoluteTimeIntervalSince1970;
194 196
195 base::ScopedCFTypeRef<CFTimeZoneRef> time_zone( 197 base::ScopedCFTypeRef<CFTimeZoneRef> time_zone(
196 is_local ? CFTimeZoneCopySystem() : NULL); 198 is_local ? CFTimeZoneCopySystem() : NULL);
197 CFGregorianDate date = CFAbsoluteTimeGetGregorianDate(seconds, time_zone); 199 CFGregorianDate date = CFAbsoluteTimeGetGregorianDate(seconds, time_zone);
198 // 1 = Monday, ..., 7 = Sunday. 200 // 1 = Monday, ..., 7 = Sunday.
(...skipping 26 matching lines...) Expand all
225 bool TimeTicks::IsHighResolution() { 227 bool TimeTicks::IsHighResolution() {
226 return true; 228 return true;
227 } 229 }
228 230
229 // static 231 // static
230 ThreadTicks ThreadTicks::Now() { 232 ThreadTicks ThreadTicks::Now() {
231 return ThreadTicks(ComputeThreadTicks()); 233 return ThreadTicks(ComputeThreadTicks());
232 } 234 }
233 235
234 } // namespace base 236 } // namespace base
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