forked from ethereum/go-ethereum
-
Notifications
You must be signed in to change notification settings - Fork 11
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
common/fdlimit: cap on MacOS file limits, fixes ethereum#18994
- Loading branch information
Showing
2 changed files
with
71 additions
and
1 deletion.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,70 @@ | ||
// 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/>. | ||
|
||
// +build darwin | ||
|
||
package fdlimit | ||
|
||
import "syscall" | ||
|
||
// Raise tries to maximize the file descriptor allowance of this process | ||
// to the maximum hard-limit allowed by the OS. | ||
func Raise(max uint64) error { | ||
// Get the current limit | ||
var limit syscall.Rlimit | ||
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil { | ||
return err | ||
} | ||
// Try to update the limit to the max allowance | ||
limit.Cur = limit.Max | ||
if limit.Cur > max { | ||
limit.Cur = max | ||
} | ||
// https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/getrlimit.2.html | ||
// | ||
// setrlimit() now returns with errno set to EINVAL in places that histori-cally historically | ||
// cally succeeded. It no longer accepts "rlim_cur = RLIM_INFINITY" for | ||
// RLIM_NOFILE. Use "rlim_cur = min(OPEN_MAX, rlim_max)". | ||
// | ||
// OPEN_MAX is 10240 | ||
if limit.Cur > 10240 { | ||
limit.Cur = 10240 | ||
} | ||
if err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil { | ||
return err | ||
} | ||
return 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) { | ||
var limit syscall.Rlimit | ||
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &limit); err != nil { | ||
return 0, err | ||
} | ||
return int(limit.Max), nil | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters