| // Copyright 2018 The gVisor 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. |
| |
| // +build go1.9 |
| // +build !go1.18 |
| |
| // Check go:linkname function signatures when updating Go version. |
| |
| package tcpip |
| |
| import ( |
| "time" // Used with go:linkname. |
| _ "unsafe" // Required for go:linkname. |
| ) |
| |
| // StdClock implements Clock with the time package. |
| // |
| // +stateify savable |
| type StdClock struct{} |
| |
| var _ Clock = (*StdClock)(nil) |
| |
| //go:linkname now time.now |
| func now() (sec int64, nsec int32, mono int64) |
| |
| // NowNanoseconds implements Clock.NowNanoseconds. |
| func (*StdClock) NowNanoseconds() int64 { |
| sec, nsec, _ := now() |
| return sec*1e9 + int64(nsec) |
| } |
| |
| // NowMonotonic implements Clock.NowMonotonic. |
| func (*StdClock) NowMonotonic() int64 { |
| _, _, mono := now() |
| return mono |
| } |
| |
| // AfterFunc implements Clock.AfterFunc. |
| func (*StdClock) AfterFunc(d time.Duration, f func()) Timer { |
| return &stdTimer{ |
| t: time.AfterFunc(d, f), |
| } |
| } |
| |
| type stdTimer struct { |
| t *time.Timer |
| } |
| |
| var _ Timer = (*stdTimer)(nil) |
| |
| // Stop implements Timer.Stop. |
| func (st *stdTimer) Stop() bool { |
| return st.t.Stop() |
| } |
| |
| // Reset implements Timer.Reset. |
| func (st *stdTimer) Reset(d time.Duration) { |
| st.t.Reset(d) |
| } |
| |
| // NewStdTimer returns a Timer implemented with the time package. |
| func NewStdTimer(t *time.Timer) Timer { |
| return &stdTimer{t: t} |
| } |