| // Copyright 2014 The LUCI Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package clock |
| |
| import ( |
| "context" |
| "time" |
| ) |
| |
| // Implementation of Clock that uses Go's standard library. |
| type systemClock struct{} |
| |
| // System clock instance. |
| var systemClockInstance systemClock |
| |
| var _ Clock = systemClock{} |
| |
| // GetSystemClock returns an instance of a Clock whose method calls directly use |
| // Go's "time" library. |
| func GetSystemClock() Clock { |
| return systemClockInstance |
| } |
| |
| func (systemClock) Now() time.Time { |
| return time.Now() |
| } |
| |
| func (sc systemClock) Sleep(c context.Context, d time.Duration) TimerResult { |
| return <-sc.After(c, d) |
| } |
| |
| func (systemClock) NewTimer(ctx context.Context) Timer { |
| return newSystemTimer(ctx) |
| } |
| |
| func (sc systemClock) After(ctx context.Context, d time.Duration) <-chan TimerResult { |
| t := sc.NewTimer(ctx) |
| t.Reset(d) |
| return t.GetC() |
| } |