mirror of
https://github.com/go-gitea/gitea
synced 2025-11-04 05:18:25 +00:00
b6a95a8cb3
* Dropped unused codekit config * Integrated dynamic and static bindata for public * Ignore public bindata * Add a general generate make task * Integrated flexible public assets into web command * Updated vendoring, added all missiong govendor deps * Made the linter happy with the bindata and dynamic code * Moved public bindata definition to modules directory * Ignoring the new bindata path now * Updated to the new public modules import path * Updated public bindata command and drop the new prefix
82 lines
1.9 KiB
Go
82 lines
1.9 KiB
Go
package uuid
|
|
|
|
/****************
|
|
* Date: 14/02/14
|
|
* Time: 7:46 PM
|
|
***************/
|
|
|
|
import (
|
|
"time"
|
|
)
|
|
|
|
const (
|
|
// A tick is 100 ns
|
|
ticksPerSecond = 10000000
|
|
|
|
// Difference between
|
|
gregorianToUNIXOffset uint64 = 0x01B21DD213814000
|
|
|
|
// set the following to the number of 100ns ticks of the actual
|
|
// resolution of your system's clock
|
|
idsPerTimestamp = 1024
|
|
)
|
|
|
|
var (
|
|
lastTimestamp Timestamp
|
|
idsThisTimestamp = idsPerTimestamp
|
|
)
|
|
|
|
// ********************************************** Timestamp
|
|
|
|
type Timestamp uint64
|
|
|
|
// TODO Create c version same as package runtime and time
|
|
func Now() (sec int64, nsec int32) {
|
|
t := time.Now()
|
|
sec = t.Unix()
|
|
nsec = int32(t.Nanosecond())
|
|
return
|
|
}
|
|
|
|
// Converts Unix formatted time to RFC4122 UUID formatted times
|
|
// UUID UTC base time is October 15, 1582.
|
|
// Unix base time is January 1, 1970.
|
|
// Converts time to 100 nanosecond ticks since epoch
|
|
// There are 1000000000 nanoseconds in a second,
|
|
// 1000000000 / 100 = 10000000 tiks per second
|
|
func timestamp() Timestamp {
|
|
sec, nsec := Now()
|
|
return Timestamp(uint64(sec)*ticksPerSecond +
|
|
uint64(nsec)/100 + gregorianToUNIXOffset)
|
|
}
|
|
|
|
func (o Timestamp) Unix() time.Time {
|
|
t := uint64(o) - gregorianToUNIXOffset
|
|
return time.Unix(0, int64(t*100))
|
|
}
|
|
|
|
// Get time as 60-bit 100ns ticks since UUID epoch.
|
|
// Compensate for the fact that real clock resolution is
|
|
// less than 100ns.
|
|
func currentUUIDTimestamp() Timestamp {
|
|
var timeNow Timestamp
|
|
for {
|
|
timeNow = timestamp()
|
|
|
|
// if clock reading changed since last UUID generated
|
|
if lastTimestamp != timeNow {
|
|
// reset count of UUIDs with this timestamp
|
|
idsThisTimestamp = 0
|
|
lastTimestamp = timeNow
|
|
break
|
|
}
|
|
if idsThisTimestamp < idsPerTimestamp {
|
|
idsThisTimestamp++
|
|
break
|
|
}
|
|
// going too fast for the clock; spin
|
|
}
|
|
// add the count of UUIDs to low order bits of the clock reading
|
|
return timeNow + Timestamp(idsThisTimestamp)
|
|
}
|