Files
gvisor/pkg/sentry/kernel/time/context.go
T
Adin Scannell 0e2f1b7abd Update package locations.
Because the abi will depend on the core types for marshalling (usermem,
context, safemem, safecopy), these need to be flattened from the sentry
directory. These packages contain no sentry-specific details.

PiperOrigin-RevId: 291811289
2020-01-27 15:31:32 -08:00

45 lines
1.3 KiB
Go

// 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.
package time
import (
"gvisor.dev/gvisor/pkg/context"
)
// contextID is the time package's type for context.Context.Value keys.
type contextID int
const (
// CtxRealtimeClock is a Context.Value key for the current real time.
CtxRealtimeClock contextID = iota
)
// RealtimeClockFromContext returns the real time clock associated with context
// ctx.
func RealtimeClockFromContext(ctx context.Context) Clock {
if v := ctx.Value(CtxRealtimeClock); v != nil {
return v.(Clock)
}
return nil
}
// NowFromContext returns the current real time associated with context ctx.
func NowFromContext(ctx context.Context) Time {
if clk := RealtimeClockFromContext(ctx); clk != nil {
return clk.Now()
}
panic("encountered context without RealtimeClock")
}