test/KeyboardInterrupt.py

   1 #!/usr/bin/env python
   2 #
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  24
  25 __revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
  26
  27 """
  28 Verify that we handle keyboard interrupts (CTRL-C) correctly.
  29 """
  30
  31 import TestSCons
  32
  33 test = TestSCons.TestSCons()
  34
  35 test.write('toto.c', r"""
  36 void foo()
  37 {}
  38 """)
  39
  40 test.write('SConstruct', r"""
  41 import os
  42 import sys
  43 import signal
  44
  45 if 'killpg' not in dir(os) or 'setpgrp' not in dir(os) or sys.platform == 'cygwin':
  46     # The platform does not support process group. Therefore, we
  47     # directly invoked the SIGINT handler to simulate a
  48     # KeyboardInterrupt. This hack is necessary because there is no
  49     # easy way to get access to the current Job/Taskmaster object.
  50     #
  51     # Note that this way of performing the test is not as good as
  52     # using killpg because the Taskmaster is stopped synchronously. In
  53     # addition, the SCons subprocesses (or forked children before the
  54     # exec() of the subprocess) are never killed. This therefore
  55     # exercise less SCons functionality.
  56     #
  57     # FIXME: There seems to be a bug on Cygwin where the compiler
  58     # process hangs after sending the SIGINT signal to the process
  59     # group. It is probably a bug in cygwin1.dll, or maybe in the
  60     # Python 'C' code or the Python subprocess module. We therefore do
  61     # not use 'killpg' on Cygwin.
  62     def explode(env, target, source):
  63         handler = signal.getsignal(signal.SIGINT)
  64         handler(signal.SIGINT, None)
  65         return 0
  66 else:
  67     # The platform does support process group so we use killpg to send
  68     # a SIGINT to everyone.
  69
  70     # Make sure that SCons is a process group leader.
  71     os.setpgrp()
  72
  73     def explode(env, target, source):
  74         os.killpg(0, signal.SIGINT)
  75
  76
  77 all = []
  78
  79 for i in range(40):
  80     all.extend(Object('toto%5d' % i, 'toto.c'))
  81
  82 all.extend(Command( 'broken', 'toto.c', explode))
  83
  84 Default( Alias('all', all))
  85 """
  86 )
  87
  88 interruptedStr = """\
  89 .*\
  90 scons: building terminated because of errors\\.
  91 .*\
  92 scons: writing .sconsign file\\.
  93 .*\
  94 """
  95
  96 def runtest(arguments):
  97     test.run(arguments='-c')
  98     test.run(arguments=arguments, status=2,
  99              stdout=interruptedStr,
 100              stderr='.*scons: Build interrupted\\.',
 101              match=TestSCons.match_re_dotall)
 102
 103 for i in range(2):
 104     runtest('-j1')
 105     runtest('-j4')
 106     runtest('-j8')
 107     runtest('-j16')
 108     runtest('-j32')
 109     runtest('-j64')
 110
 111     runtest('-j1 --random')
 112     runtest('-j4 --random')
 113     runtest('-j8 --random')
 114     runtest('-j16 --random')
 115     runtest('-j32 --random')
 116     runtest('-j64 --random')
 117
 118 test.pass_test()
 119
 120 # Local Variables:
 121 # tab-width:4
 122 # indent-tabs-mode:nil
 123 # End:
 124 # vim: set expandtab tabstop=4 shiftwidth=4: