1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/security/sandbox/chromium/base/time/time.cc Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,208 @@
1.4 +// Copyright (c) 2012 The Chromium Authors. All rights reserved.
1.5 +// Use of this source code is governed by a BSD-style license that can be
1.6 +// found in the LICENSE file.
1.7 +
1.8 +#include "base/time/time.h"
1.9 +
1.10 +#include <limits>
1.11 +#include <ostream>
1.12 +
1.13 +#include "base/float_util.h"
1.14 +#include "base/logging.h"
1.15 +#include "base/third_party/nspr/prtime.h"
1.16 +#include "base/third_party/nspr/prtypes.h"
1.17 +
1.18 +namespace base {
1.19 +
1.20 +// TimeDelta ------------------------------------------------------------------
1.21 +
1.22 +int TimeDelta::InDays() const {
1.23 + return static_cast<int>(delta_ / Time::kMicrosecondsPerDay);
1.24 +}
1.25 +
1.26 +int TimeDelta::InHours() const {
1.27 + return static_cast<int>(delta_ / Time::kMicrosecondsPerHour);
1.28 +}
1.29 +
1.30 +int TimeDelta::InMinutes() const {
1.31 + return static_cast<int>(delta_ / Time::kMicrosecondsPerMinute);
1.32 +}
1.33 +
1.34 +double TimeDelta::InSecondsF() const {
1.35 + return static_cast<double>(delta_) / Time::kMicrosecondsPerSecond;
1.36 +}
1.37 +
1.38 +int64 TimeDelta::InSeconds() const {
1.39 + return delta_ / Time::kMicrosecondsPerSecond;
1.40 +}
1.41 +
1.42 +double TimeDelta::InMillisecondsF() const {
1.43 + return static_cast<double>(delta_) / Time::kMicrosecondsPerMillisecond;
1.44 +}
1.45 +
1.46 +int64 TimeDelta::InMilliseconds() const {
1.47 + return delta_ / Time::kMicrosecondsPerMillisecond;
1.48 +}
1.49 +
1.50 +int64 TimeDelta::InMillisecondsRoundedUp() const {
1.51 + return (delta_ + Time::kMicrosecondsPerMillisecond - 1) /
1.52 + Time::kMicrosecondsPerMillisecond;
1.53 +}
1.54 +
1.55 +int64 TimeDelta::InMicroseconds() const {
1.56 + return delta_;
1.57 +}
1.58 +
1.59 +// Time -----------------------------------------------------------------------
1.60 +
1.61 +// static
1.62 +Time Time::Max() {
1.63 + return Time(std::numeric_limits<int64>::max());
1.64 +}
1.65 +
1.66 +// static
1.67 +Time Time::FromTimeT(time_t tt) {
1.68 + if (tt == 0)
1.69 + return Time(); // Preserve 0 so we can tell it doesn't exist.
1.70 + if (tt == std::numeric_limits<time_t>::max())
1.71 + return Max();
1.72 + return Time((tt * kMicrosecondsPerSecond) + kTimeTToMicrosecondsOffset);
1.73 +}
1.74 +
1.75 +time_t Time::ToTimeT() const {
1.76 + if (is_null())
1.77 + return 0; // Preserve 0 so we can tell it doesn't exist.
1.78 + if (is_max()) {
1.79 + // Preserve max without offset to prevent overflow.
1.80 + return std::numeric_limits<time_t>::max();
1.81 + }
1.82 + if (std::numeric_limits<int64>::max() - kTimeTToMicrosecondsOffset <= us_) {
1.83 + DLOG(WARNING) << "Overflow when converting base::Time with internal " <<
1.84 + "value " << us_ << " to time_t.";
1.85 + return std::numeric_limits<time_t>::max();
1.86 + }
1.87 + return (us_ - kTimeTToMicrosecondsOffset) / kMicrosecondsPerSecond;
1.88 +}
1.89 +
1.90 +// static
1.91 +Time Time::FromDoubleT(double dt) {
1.92 + if (dt == 0 || IsNaN(dt))
1.93 + return Time(); // Preserve 0 so we can tell it doesn't exist.
1.94 + if (dt == std::numeric_limits<double>::max())
1.95 + return Max();
1.96 + return Time(static_cast<int64>((dt *
1.97 + static_cast<double>(kMicrosecondsPerSecond)) +
1.98 + kTimeTToMicrosecondsOffset));
1.99 +}
1.100 +
1.101 +double Time::ToDoubleT() const {
1.102 + if (is_null())
1.103 + return 0; // Preserve 0 so we can tell it doesn't exist.
1.104 + if (is_max()) {
1.105 + // Preserve max without offset to prevent overflow.
1.106 + return std::numeric_limits<double>::max();
1.107 + }
1.108 + return (static_cast<double>(us_ - kTimeTToMicrosecondsOffset) /
1.109 + static_cast<double>(kMicrosecondsPerSecond));
1.110 +}
1.111 +
1.112 +#if defined(OS_POSIX)
1.113 +// static
1.114 +Time Time::FromTimeSpec(const timespec& ts) {
1.115 + return FromDoubleT(ts.tv_sec +
1.116 + static_cast<double>(ts.tv_nsec) /
1.117 + base::Time::kNanosecondsPerSecond);
1.118 +}
1.119 +#endif
1.120 +
1.121 +// static
1.122 +Time Time::FromJsTime(double ms_since_epoch) {
1.123 + // The epoch is a valid time, so this constructor doesn't interpret
1.124 + // 0 as the null time.
1.125 + if (ms_since_epoch == std::numeric_limits<double>::max())
1.126 + return Max();
1.127 + return Time(static_cast<int64>(ms_since_epoch * kMicrosecondsPerMillisecond) +
1.128 + kTimeTToMicrosecondsOffset);
1.129 +}
1.130 +
1.131 +double Time::ToJsTime() const {
1.132 + if (is_null()) {
1.133 + // Preserve 0 so the invalid result doesn't depend on the platform.
1.134 + return 0;
1.135 + }
1.136 + if (is_max()) {
1.137 + // Preserve max without offset to prevent overflow.
1.138 + return std::numeric_limits<double>::max();
1.139 + }
1.140 + return (static_cast<double>(us_ - kTimeTToMicrosecondsOffset) /
1.141 + kMicrosecondsPerMillisecond);
1.142 +}
1.143 +
1.144 +int64 Time::ToJavaTime() const {
1.145 + if (is_null()) {
1.146 + // Preserve 0 so the invalid result doesn't depend on the platform.
1.147 + return 0;
1.148 + }
1.149 + if (is_max()) {
1.150 + // Preserve max without offset to prevent overflow.
1.151 + return std::numeric_limits<int64>::max();
1.152 + }
1.153 + return ((us_ - kTimeTToMicrosecondsOffset) /
1.154 + kMicrosecondsPerMillisecond);
1.155 +}
1.156 +
1.157 +// static
1.158 +Time Time::UnixEpoch() {
1.159 + Time time;
1.160 + time.us_ = kTimeTToMicrosecondsOffset;
1.161 + return time;
1.162 +}
1.163 +
1.164 +Time Time::LocalMidnight() const {
1.165 + Exploded exploded;
1.166 + LocalExplode(&exploded);
1.167 + exploded.hour = 0;
1.168 + exploded.minute = 0;
1.169 + exploded.second = 0;
1.170 + exploded.millisecond = 0;
1.171 + return FromLocalExploded(exploded);
1.172 +}
1.173 +
1.174 +// static
1.175 +bool Time::FromStringInternal(const char* time_string,
1.176 + bool is_local,
1.177 + Time* parsed_time) {
1.178 + DCHECK((time_string != NULL) && (parsed_time != NULL));
1.179 +
1.180 + if (time_string[0] == '\0')
1.181 + return false;
1.182 +
1.183 + PRTime result_time = 0;
1.184 + PRStatus result = PR_ParseTimeString(time_string,
1.185 + is_local ? PR_FALSE : PR_TRUE,
1.186 + &result_time);
1.187 + if (PR_SUCCESS != result)
1.188 + return false;
1.189 +
1.190 + result_time += kTimeTToMicrosecondsOffset;
1.191 + *parsed_time = Time(result_time);
1.192 + return true;
1.193 +}
1.194 +
1.195 +// Time::Exploded -------------------------------------------------------------
1.196 +
1.197 +inline bool is_in_range(int value, int lo, int hi) {
1.198 + return lo <= value && value <= hi;
1.199 +}
1.200 +
1.201 +bool Time::Exploded::HasValidValues() const {
1.202 + return is_in_range(month, 1, 12) &&
1.203 + is_in_range(day_of_week, 0, 6) &&
1.204 + is_in_range(day_of_month, 1, 31) &&
1.205 + is_in_range(hour, 0, 23) &&
1.206 + is_in_range(minute, 0, 59) &&
1.207 + is_in_range(second, 0, 60) &&
1.208 + is_in_range(millisecond, 0, 999);
1.209 +}
1.210 +
1.211 +} // namespace base
