54 lines
1 KiB
Go
54 lines
1 KiB
Go
// Copyright (c) 2013-2014 The btcsuite developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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//go:build !windows && !plan9
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// +build !windows,!plan9
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package limits
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import (
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"fmt"
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"syscall"
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)
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const (
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fileLimitWant = 2048 * 12
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fileLimitMin = 2048 * 8
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)
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// SetLimits raises some process limits to values which allow btcd and
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// associated utilities to run.
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func SetLimits() error {
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var rLimit syscall.Rlimit
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err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit)
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if err != nil {
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return err
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}
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if rLimit.Cur > fileLimitWant {
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return nil
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}
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if rLimit.Max < fileLimitMin {
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err = fmt.Errorf("need at least %v file descriptors",
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fileLimitMin)
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return err
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}
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if rLimit.Max < fileLimitWant {
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rLimit.Cur = rLimit.Max
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} else {
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rLimit.Cur = fileLimitWant
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}
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err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
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if err != nil {
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// try min value
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rLimit.Cur = fileLimitMin
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err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit)
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if err != nil {
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return err
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}
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}
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return nil
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}
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