ceph/src/boost/tools/build/src/tools/features/threadapi-feature.jam

   1 # Copyright 2017 Alexander Karzhenkov
   2 # Distributed under the Boost Software License, Version 1.0.
   3 # (See accompanying file LICENSE_1_0.txt or copy at
   4 # http://www.boost.org/LICENSE_1_0.txt)
   5
   6 # TODO: Documentation.
   7
   8 import property-set ;
   9 import feature : feature ;
  10
  11 if ! [ feature.valid threadapi ]
  12 {
  13     feature threadapi : win32 pthread : optional propagated ;
  14 }
  15
  16 rule get-default ( property-set )
  17 {
  18     local api = pthread ;
  19     if [ $(property-set).get <target-os> ] = windows { api = win32 ; }
  20     return $(api) ;
  21 }
  22
  23 rule detect ( properties * )
  24 {
  25     local ps = [ property-set.create $(properties) ] ;
  26     local api = [ $(ps).get <threadapi> ] ;
  27     if ! $(api) { api = [ get-default $(ps) ] ; }
  28     return <threadapi>$(api) ;
  29 }