// +build linux

// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package sys

import (
	"io/ioutil"
	"strconv"
	"strings"
)

// GetMaxThreads returns the maximum number of threads that the system can create.
func GetMaxThreads() (int, error) {
	sysMaxThreadsStr, err := ioutil.ReadFile("/proc/sys/kernel/threads-max")
	if err != nil {
		return 0, err
	}
	sysMaxThreads, err := strconv.Atoi(strings.TrimSpace(string(sysMaxThreadsStr)))
	if err != nil {
		return 0, err
	}
	return sysMaxThreads, nil
}