github.com/livekit/protocol@v1.39.3/utils/mono/mono.go (about)

     1  // Copyright 2023 LiveKit, Inc.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package mono
    16  
    17  import "time"
    18  
    19  var (
    20  	epoch     = time.Now()
    21  	epochNano = epoch.UnixNano()
    22  )
    23  
    24  func FromTime(t time.Time) time.Time {
    25  	return epoch.Add(t.Sub(epoch))
    26  }
    27  
    28  func Now() time.Time {
    29  	return epoch.Add(time.Since(epoch))
    30  }
    31  
    32  func UnixNano() int64 {
    33  	return epochNano + int64(time.Since(epoch))
    34  }
    35  
    36  func UnixMicro() int64 {
    37  	return UnixNano() / 1000
    38  }