mirror of
https://github.com/prometheus/prometheus.git
synced 2024-11-14 01:24:04 -08:00
48 lines
1.5 KiB
Go
48 lines
1.5 KiB
Go
// Copyright 2017 The Prometheus 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 !windows
|
|
|
|
package runtime
|
|
|
|
import (
|
|
"fmt"
|
|
"syscall"
|
|
)
|
|
|
|
// syscall.RLIM_INFINITY is a constant and its default type is int.
|
|
// It needs to be converted to an int64 variable to be compared with uint64 values.
|
|
// See https://golang.org/ref/spec#Conversions
|
|
var unlimited int64 = syscall.RLIM_INFINITY
|
|
|
|
func limitToString(v uint64, unit string) string {
|
|
if v == uint64(unlimited) {
|
|
return "unlimited"
|
|
}
|
|
return fmt.Sprintf("%d%s", v, unit)
|
|
}
|
|
|
|
func getLimits(resource int, unit string) string {
|
|
rlimit := syscall.Rlimit{}
|
|
err := syscall.Getrlimit(resource, &rlimit)
|
|
if err != nil {
|
|
panic("syscall.Getrlimit failed: " + err.Error())
|
|
}
|
|
return fmt.Sprintf("(soft=%s, hard=%s)", limitToString(uint64(rlimit.Cur), unit), limitToString(uint64(rlimit.Max), unit))
|
|
}
|
|
|
|
// FdLimits returns the soft and hard limits for file descriptors.
|
|
func FdLimits() string {
|
|
return getLimits(syscall.RLIMIT_NOFILE, "")
|
|
}
|