gvisor/pkg/flipcall/endpoint_futex.go

46 lines
1.2 KiB
Go

// Copyright 2019 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 flipcall
import (
"fmt"
)
type endpointControlState struct{}
func (ep *Endpoint) initControlState(ctrlMode ControlMode) error {
if ctrlMode != ControlModeFutex {
return fmt.Errorf("unsupported control mode: %v", ctrlMode)
}
return nil
}
func (ep *Endpoint) doRoundTrip() error {
return ep.doFutexRoundTrip()
}
func (ep *Endpoint) doWaitFirst() error {
return ep.doFutexWaitFirst()
}
func (ep *Endpoint) doNotifyLast() error {
return ep.doFutexNotifyLast()
}
// Preconditions: ep.isShutdown() == true.
func (ep *Endpoint) interruptForShutdown() {
ep.doFutexInterruptForShutdown()
}