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Diffstat (limited to 'chrome/browser/sync/notifier/base/time.h')
| -rw-r--r-- | chrome/browser/sync/notifier/base/time.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/chrome/browser/sync/notifier/base/time.h b/chrome/browser/sync/notifier/base/time.h new file mode 100644 index 0000000..9bdb6f6 --- /dev/null +++ b/chrome/browser/sync/notifier/base/time.h @@ -0,0 +1,114 @@ +// Copyright (c) 2009 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. + +#ifndef CHROME_BROWSER_SYNC_NOTIFIER_BASE_TIME_H_ +#define CHROME_BROWSER_SYNC_NOTIFIER_BASE_TIME_H_ + +#include <time.h> + +#include "talk/base/basictypes.h" + +typedef uint64 time64; + +#define kMicrosecsTo100ns (static_cast<time64>(10)) +#define kMillisecsTo100ns (static_cast<time64>(10000)) +#define kSecsTo100ns (1000 * kMillisecsTo100ns) +#define kMinsTo100ns (60 * kSecsTo100ns) +#define kHoursTo100ns (60 * kMinsTo100ns) +#define kDaysTo100ns (24 * kHoursTo100ns) +const time64 kMaxTime100ns = UINT64_C(9223372036854775807); + +// Time difference in 100NS granularity between platform-dependent starting +// time and Jan 1, 1970. +#ifdef WIN32 +// On Windows time64 is seconds since Jan 1, 1601. +#define kStart100NsTimeToEpoch (116444736000000000uI64) // Jan 1, 1970 in time64 +#else +// On Unix time64 is seconds since Jan 1, 1970. +#define kStart100NsTimeToEpoch (0) // Jan 1, 1970 in time64 +#endif + +// Time difference in 100NS granularity between platform-dependent starting +// time and Jan 1, 1980. +#define kStart100NsTimeTo1980 \ + kStart100NsTimeToEpoch + UINT64_C(3155328000000000) + +#define kTimeGranularity (kDaysTo100ns) + +namespace notifier { + +// Get the current time represented in 100NS granularity +// Different platform might return the value since different starting time. +// Win32 platform returns the value since Jan 1, 1601. +time64 GetCurrent100NSTime(); + +// Get the current time represented in 100NS granularity since epoch +// (Jan 1, 1970). +time64 GetCurrent100NSTimeSinceEpoch(); + +// Convert from struct tm to time64. +time64 TmToTime64(const struct tm& tm); + +// Convert from time64 to struct tm. +bool Time64ToTm(time64 t, struct tm* tm); + +// Convert from UTC time to local time. +bool UtcTimeToLocalTime(struct tm* tm); + +// Convert from local time to UTC time. +bool LocalTimeToUtcTime(struct tm* tm); + +// Returns the local time as a string suitable for logging +// Note: This is *not* threadsafe, so only call it from the main thread. +char* GetLocalTimeAsString(); + +// Parses RFC 822 Date/Time format +// 5. DATE AND TIME SPECIFICATION +// 5.1. SYNTAX +// +// date-time = [ day "," ] date time ; dd mm yy +// ; hh:mm:ss zzz +// day = "Mon" / "Tue" / "Wed" / "Thu" +// / "Fri" / "Sat" / "Sun" +// +// date = 1*2DIGIT month 2DIGIT ; day month year +// ; e.g. 20 Jun 82 +// +// month = "Jan" / "Feb" / "Mar" / "Apr" +// / "May" / "Jun" / "Jul" / "Aug" +// / "Sep" / "Oct" / "Nov" / "Dec" +// +// time = hour zone ; ANSI and Military +// +// hour = 2DIGIT ":" 2DIGIT [":" 2DIGIT] +// ; 00:00:00 - 23:59:59 +// +// zone = "UT" / "GMT" ; Universal Time +// ; North American : UT +// / "EST" / "EDT" ; Eastern: - 5/ - 4 +// / "CST" / "CDT" ; Central: - 6/ - 5 +// / "MST" / "MDT" ; Mountain: - 7/ - 6 +// / "PST" / "PDT" ; Pacific: - 8/ - 7 +// / 1ALPHA ; Military: Z = UT; +// ; A:-1; (J not used) +// ; M:-12; N:+1; Y:+12 +// / ( ("+" / "-") 4DIGIT ) ; Local differential +// ; hours+min. (HHMM) +// Return local time if ret_local_time == true, return UTC time otherwise +bool ParseRFC822DateTime(const char* str, struct tm* time, bool ret_local_time); + +// Parse a string to time span. +// +// A TimeSpan value can be represented as +// [d.]hh:mm:ss +// +// d = days (optional) +// hh = hours as measured on a 24-hour clock +// mm = minutes +// ss = seconds +bool ParseStringToTimeSpan(const char* str, time64* time_span); + +} // namespace notifier + +#endif // CHROME_BROWSER_SYNC_NOTIFIER_BASE_TIME_H_ |