#!/bin/bash
###############################################################################
#                                                                             #
# IPFire.org - A linux based firewall                                         #
# Copyright (C) 2016  IPFire Network Development Team                         #
#                                                                             #
# This program is free software: you can redistribute it and/or modify        #
# it under the terms of the GNU 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 General Public License for more details.                                #
#                                                                             #
# You should have received a copy of the GNU General Public License           #
# along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
#                                                                             #
###############################################################################

SYSTEM_PROCESSORS=

# Returns the number of online processors
system_get_processors() {
	# Cache this since the function is called quite often
	isset SYSTEM_PROCESSORS || SYSTEM_PROCESSORS=$(__system_get_processors)

	echo ${SYSTEM_PROCESSORS}
}

__system_get_processors() {
	getconf _NPROCESSORS_ONLN
}

system_get_next_processor() {
	assert [ $# -eq 1 ]

	local processor=${1}
	local processors=$(system_get_processors)

	# Pick the next one
	print $(( (${processor} + 1) % ${processors} ))
}