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Diffstat (limited to 'vendor/github.com/google/uuid/time.go')
| -rw-r--r-- | vendor/github.com/google/uuid/time.go | 123 | 
1 files changed, 0 insertions, 123 deletions
diff --git a/vendor/github.com/google/uuid/time.go b/vendor/github.com/google/uuid/time.go deleted file mode 100644 index e6ef06c..0000000 --- a/vendor/github.com/google/uuid/time.go +++ /dev/null @@ -1,123 +0,0 @@ -// Copyright 2016 Google Inc.  All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package uuid - -import ( -	"encoding/binary" -	"sync" -	"time" -) - -// A Time represents a time as the number of 100's of nanoseconds since 15 Oct -// 1582. -type Time int64 - -const ( -	lillian    = 2299160          // Julian day of 15 Oct 1582 -	unix       = 2440587          // Julian day of 1 Jan 1970 -	epoch      = unix - lillian   // Days between epochs -	g1582      = epoch * 86400    // seconds between epochs -	g1582ns100 = g1582 * 10000000 // 100s of a nanoseconds between epochs -) - -var ( -	timeMu   sync.Mutex -	lasttime uint64 // last time we returned -	clockSeq uint16 // clock sequence for this run - -	timeNow = time.Now // for testing -) - -// UnixTime converts t the number of seconds and nanoseconds using the Unix -// epoch of 1 Jan 1970. -func (t Time) UnixTime() (sec, nsec int64) { -	sec = int64(t - g1582ns100) -	nsec = (sec % 10000000) * 100 -	sec /= 10000000 -	return sec, nsec -} - -// GetTime returns the current Time (100s of nanoseconds since 15 Oct 1582) and -// clock sequence as well as adjusting the clock sequence as needed.  An error -// is returned if the current time cannot be determined. -func GetTime() (Time, uint16, error) { -	defer timeMu.Unlock() -	timeMu.Lock() -	return getTime() -} - -func getTime() (Time, uint16, error) { -	t := timeNow() - -	// If we don't have a clock sequence already, set one. -	if clockSeq == 0 { -		setClockSequence(-1) -	} -	now := uint64(t.UnixNano()/100) + g1582ns100 - -	// If time has gone backwards with this clock sequence then we -	// increment the clock sequence -	if now <= lasttime { -		clockSeq = ((clockSeq + 1) & 0x3fff) | 0x8000 -	} -	lasttime = now -	return Time(now), clockSeq, nil -} - -// ClockSequence returns the current clock sequence, generating one if not -// already set.  The clock sequence is only used for Version 1 UUIDs. -// -// The uuid package does not use global static storage for the clock sequence or -// the last time a UUID was generated.  Unless SetClockSequence is used, a new -// random clock sequence is generated the first time a clock sequence is -// requested by ClockSequence, GetTime, or NewUUID.  (section 4.2.1.1) -func ClockSequence() int { -	defer timeMu.Unlock() -	timeMu.Lock() -	return clockSequence() -} - -func clockSequence() int { -	if clockSeq == 0 { -		setClockSequence(-1) -	} -	return int(clockSeq & 0x3fff) -} - -// SetClockSequence sets the clock sequence to the lower 14 bits of seq.  Setting to -// -1 causes a new sequence to be generated. -func SetClockSequence(seq int) { -	defer timeMu.Unlock() -	timeMu.Lock() -	setClockSequence(seq) -} - -func setClockSequence(seq int) { -	if seq == -1 { -		var b [2]byte -		randomBits(b[:]) // clock sequence -		seq = int(b[0])<<8 | int(b[1]) -	} -	oldSeq := clockSeq -	clockSeq = uint16(seq&0x3fff) | 0x8000 // Set our variant -	if oldSeq != clockSeq { -		lasttime = 0 -	} -} - -// Time returns the time in 100s of nanoseconds since 15 Oct 1582 encoded in -// uuid.  The time is only defined for version 1 and 2 UUIDs. -func (uuid UUID) Time() Time { -	time := int64(binary.BigEndian.Uint32(uuid[0:4])) -	time |= int64(binary.BigEndian.Uint16(uuid[4:6])) << 32 -	time |= int64(binary.BigEndian.Uint16(uuid[6:8])&0xfff) << 48 -	return Time(time) -} - -// ClockSequence returns the clock sequence encoded in uuid. -// The clock sequence is only well defined for version 1 and 2 UUIDs. -func (uuid UUID) ClockSequence() int { -	return int(binary.BigEndian.Uint16(uuid[8:10])) & 0x3fff -}  | 
