src/functions/functions.system

   1 #!/bin/bash
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2016  IPFire Network Development Team                         #
   6 #                                                                             #
   7 # This program is free software: you can redistribute it and/or modify        #
   8 # it under the terms of the GNU General Public License as published by        #
   9 # the Free Software Foundation, either version 3 of the License, or           #
  10 # (at your option) any later version.                                         #
  11 #                                                                             #
  12 # This program is distributed in the hope that it will be useful,             #
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  15 # GNU General Public License for more details.                                #
  16 #                                                                             #
  17 # You should have received a copy of the GNU General Public License           #
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  19 #                                                                             #
  20 ###############################################################################
  21
  22 SYSTEM_PROCESSORS=
  23
  24 # Returns the number of online processors
  25 system_get_processors() {
  26         # Cache this since the function is called quite often
  27         isset SYSTEM_PROCESSORS || SYSTEM_PROCESSORS=$(__system_get_processors)
  28
  29         echo ${SYSTEM_PROCESSORS}
  30 }
  31
  32 __system_get_processors() {
  33         getconf _NPROCESSORS_ONLN
  34 }
  35
  36 system_get_next_processor() {
  37         assert [ $# -eq 1 ]
  38
  39         local processor=${1}
  40         local processors=$(system_get_processors)
  41
  42         # Pick the next one
  43         print $(( (${processor} + 1) % ${processors} ))
  44 }