mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
synced 2024-12-27 05:57:28 +00:00
2f0a9d666c
* Added back fdlimit to increase number of file descriptors * Fixing a test file that fails on Mac with too few file descriptors available * Trying to fix ci * Trying to fix ci * Trying to fix ci 3 * Fixing ci
72 lines
2.4 KiB
Go
72 lines
2.4 KiB
Go
// Copyright 2016 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/>.
|
|
|
|
package fdlimit
|
|
|
|
import "syscall"
|
|
|
|
// hardlimit is the number of file descriptors allowed at max by the kernel.
|
|
const hardlimit = 10240
|
|
|
|
// Raise tries to maximize the file descriptor allowance of this process
|
|
// to the maximum hard-limit allowed by the OS.
|
|
// Returns the size it was set to (may differ from the desired 'max')
|
|
func Raise(max uint64) (uint64, error) {
|
|
// Get the current limit
|
|
var limit syscall.Rlimit
|
|
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil {
|
|
return 0, err
|
|
}
|
|
// Try to update the limit to the max allowance
|
|
limit.Cur = limit.Max
|
|
if limit.Cur > max {
|
|
limit.Cur = max
|
|
}
|
|
if err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil {
|
|
return 0, err
|
|
}
|
|
// MacOS can silently apply further caps, so retrieve the actually set limit
|
|
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil {
|
|
return 0, err
|
|
}
|
|
return limit.Cur, nil
|
|
}
|
|
|
|
// Current retrieves the number of file descriptors allowed to be opened by this
|
|
// process.
|
|
func Current() (int, error) {
|
|
var limit syscall.Rlimit
|
|
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil {
|
|
return 0, err
|
|
}
|
|
return int(limit.Cur), nil
|
|
}
|
|
|
|
// Maximum retrieves the maximum number of file descriptors this process is
|
|
// allowed to request for itself.
|
|
func Maximum() (int, error) {
|
|
// Retrieve the maximum allowed by dynamic OS limits
|
|
var limit syscall.Rlimit
|
|
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil {
|
|
return 0, err
|
|
}
|
|
// Cap it to OPEN_MAX (10240) because macos is a special snowflake
|
|
if limit.Max > hardlimit {
|
|
limit.Max = hardlimit
|
|
}
|
|
return int(limit.Max), nil
|
|
}
|