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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.h" | 5 #include "base/time.h" |
6 | 6 |
7 #include <math.h> | 7 #include <math.h> |
8 #if defined(OS_WIN) | 8 #if defined(OS_WIN) |
9 #include <float.h> | 9 #include <float.h> |
10 #endif | 10 #endif |
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109 if (is_null()) | 109 if (is_null()) |
110 return 0; // Preserve 0 so we can tell it doesn't exist. | 110 return 0; // Preserve 0 so we can tell it doesn't exist. |
111 if (is_max()) { | 111 if (is_max()) { |
112 // Preserve max without offset to prevent overflow. | 112 // Preserve max without offset to prevent overflow. |
113 return std::numeric_limits<double>::max(); | 113 return std::numeric_limits<double>::max(); |
114 } | 114 } |
115 return (static_cast<double>(us_ - kTimeTToMicrosecondsOffset) / | 115 return (static_cast<double>(us_ - kTimeTToMicrosecondsOffset) / |
116 static_cast<double>(kMicrosecondsPerSecond)); | 116 static_cast<double>(kMicrosecondsPerSecond)); |
117 } | 117 } |
118 | 118 |
| 119 #if defined(OS_POSIX) |
| 120 // static |
| 121 Time Time::FromTimeSpec(const timespec& ts) { |
| 122 return FromDoubleT(ts.tv_sec + |
| 123 static_cast<double>(ts.tv_nsec) / |
| 124 base::Time::kNanosecondsPerSecond); |
| 125 } |
| 126 #endif |
| 127 |
119 // static | 128 // static |
120 Time Time::FromJsTime(double ms_since_epoch) { | 129 Time Time::FromJsTime(double ms_since_epoch) { |
121 // The epoch is a valid time, so this constructor doesn't interpret | 130 // The epoch is a valid time, so this constructor doesn't interpret |
122 // 0 as the null time. | 131 // 0 as the null time. |
123 if (ms_since_epoch == std::numeric_limits<double>::max()) | 132 if (ms_since_epoch == std::numeric_limits<double>::max()) |
124 return Max(); | 133 return Max(); |
125 return Time(static_cast<int64>(ms_since_epoch * kMicrosecondsPerMillisecond) + | 134 return Time(static_cast<int64>(ms_since_epoch * kMicrosecondsPerMillisecond) + |
126 kTimeTToMicrosecondsOffset); | 135 kTimeTToMicrosecondsOffset); |
127 } | 136 } |
128 | 137 |
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187 return is_in_range(month, 1, 12) && | 196 return is_in_range(month, 1, 12) && |
188 is_in_range(day_of_week, 0, 6) && | 197 is_in_range(day_of_week, 0, 6) && |
189 is_in_range(day_of_month, 1, 31) && | 198 is_in_range(day_of_month, 1, 31) && |
190 is_in_range(hour, 0, 23) && | 199 is_in_range(hour, 0, 23) && |
191 is_in_range(minute, 0, 59) && | 200 is_in_range(minute, 0, 59) && |
192 is_in_range(second, 0, 60) && | 201 is_in_range(second, 0, 60) && |
193 is_in_range(millisecond, 0, 999); | 202 is_in_range(millisecond, 0, 999); |
194 } | 203 } |
195 | 204 |
196 } // namespace base | 205 } // namespace base |
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