mirror of https://github.com/hashicorp/consul
74 lines
1.9 KiB
Go
74 lines
1.9 KiB
Go
// +build !linux appengine
|
|
|
|
/*
|
|
*
|
|
* Copyright 2018 gRPC 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 syscall
|
|
|
|
import (
|
|
"net"
|
|
"sync"
|
|
"time"
|
|
|
|
"google.golang.org/grpc/grpclog"
|
|
)
|
|
|
|
var once sync.Once
|
|
|
|
func log() {
|
|
once.Do(func() {
|
|
grpclog.Info("CPU time info is unavailable on non-linux or appengine environment.")
|
|
})
|
|
}
|
|
|
|
// GetCPUTime returns the how much CPU time has passed since the start of this process.
|
|
// It always returns 0 under non-linux or appengine environment.
|
|
func GetCPUTime() int64 {
|
|
log()
|
|
return 0
|
|
}
|
|
|
|
// Rusage is an empty struct under non-linux or appengine environment.
|
|
type Rusage struct{}
|
|
|
|
// GetRusage is a no-op function under non-linux or appengine environment.
|
|
func GetRusage() (rusage *Rusage) {
|
|
log()
|
|
return nil
|
|
}
|
|
|
|
// CPUTimeDiff returns the differences of user CPU time and system CPU time used
|
|
// between two Rusage structs. It a no-op function for non-linux or appengine environment.
|
|
func CPUTimeDiff(first *Rusage, latest *Rusage) (float64, float64) {
|
|
log()
|
|
return 0, 0
|
|
}
|
|
|
|
// SetTCPUserTimeout is a no-op function under non-linux or appengine environments
|
|
func SetTCPUserTimeout(conn net.Conn, timeout time.Duration) error {
|
|
log()
|
|
return nil
|
|
}
|
|
|
|
// GetTCPUserTimeout is a no-op function under non-linux or appengine environments
|
|
// a negative return value indicates the operation is not supported
|
|
func GetTCPUserTimeout(conn net.Conn) (int, error) {
|
|
log()
|
|
return -1, nil
|
|
}
|