tests/test_signals.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2012 Alexis Laferrière <alexis.laf@xymus.net>
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 module test_signals
  18
  19 import signals
  20
  21 class MyReceiver
  22         super SignalHandler
  23
  24         redef fun receive_signal( signal ) do print "received safely {signal}"
  25         redef fun receive_signal_unsafe( signal ) do print "received unsafely {signal}"
  26 end
  27
  28 class MyAlarmReceiver
  29         super SignalHandler
  30
  31         init do handle_signal( sigalarm, true )
  32
  33         redef fun receive_signal( signal )
  34         do
  35                 if signal == sigalarm then print "alarm!"
  36         end
  37 end
  38
  39 var r = new MyReceiver
  40 r.handle_signal(sigint, true) # will call back when "check_signals" is called
  41 r.handle_signal(sigsegv, false) # the only way to receive a sigsegv
  42
  43 var ar = new MyAlarmReceiver
  44 set_alarm( 1 ) # calls C "alarm()"
  45
  46 loop
  47         var hit = check_signals # callbacks are amde here
  48         if hit then break
  49 end