mirror of https://github.com/poanetwork/quorum.git
54 lines
1.3 KiB
Go
54 lines
1.3 KiB
Go
// Copyright 2015 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
// +build linux
|
|
|
|
package fdtrack
|
|
|
|
import (
|
|
"io"
|
|
"os"
|
|
"syscall"
|
|
)
|
|
|
|
func fdlimit() int {
|
|
var nofile syscall.Rlimit
|
|
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &nofile); err != nil {
|
|
return 0
|
|
}
|
|
return int(nofile.Cur)
|
|
}
|
|
|
|
func fdusage() (int, error) {
|
|
f, err := os.Open("/proc/self/fd")
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
defer f.Close()
|
|
const batchSize = 100
|
|
n := 0
|
|
for {
|
|
list, err := f.Readdirnames(batchSize)
|
|
n += len(list)
|
|
if err == io.EOF {
|
|
break
|
|
} else if err != nil {
|
|
return 0, err
|
|
}
|
|
}
|
|
return n, nil
|
|
}
|