signal/tst-sigisemptyset.c

   1 /* Tests for sigisemptyset/sigorset/sigandset.
   2    Copyright (C) 2020-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <signal.h>
  20
  21 #include <support/check.h>
  22
  23 static int
  24 do_test (void)
  25 {
  26   {
  27     sigset_t set;
  28     sigemptyset (&set);
  29     TEST_COMPARE (sigisemptyset (&set), 1);
  30   }
  31
  32   {
  33     sigset_t set;
  34     sigfillset (&set);
  35     TEST_COMPARE (sigisemptyset (&set), 0);
  36   }
  37
  38   {
  39     sigset_t setfill, setempty, set;
  40     sigfillset (&setfill);
  41     sigemptyset (&setempty);
  42
  43     sigorset (&set, &setfill, &setempty);
  44     TEST_COMPARE (sigisemptyset (&set), 0);
  45
  46     sigandset (&set, &setfill, &setempty);
  47     TEST_COMPARE (sigisemptyset (&set), 1);
  48   }
  49
  50   /* Ensure current SIG_BLOCK mask empty.  */
  51   {
  52     sigset_t set;
  53     sigemptyset (&set);
  54     TEST_COMPARE (sigprocmask (SIG_BLOCK, &set, 0), 0);
  55   }
  56
  57   {
  58     sigset_t set;
  59     sigemptyset (&set);
  60     TEST_COMPARE (sigprocmask (SIG_BLOCK, 0, &set), 0);
  61     TEST_COMPARE (sigisemptyset (&set), 1);
  62   }
  63
  64   {
  65     sigset_t set;
  66     sigfillset (&set);
  67     TEST_COMPARE (sigprocmask (SIG_BLOCK, 0, &set), 0);
  68     TEST_COMPARE (sigisemptyset (&set), 1);
  69   }
  70
  71   /* Block all signals.  */
  72   {
  73     sigset_t set;
  74     sigfillset (&set);
  75     TEST_COMPARE (sigprocmask (SIG_BLOCK, &set, 0), 0);
  76   }
  77
  78   {
  79     sigset_t set;
  80     sigemptyset (&set);
  81     TEST_COMPARE (sigpending (&set), 0);
  82     TEST_COMPARE (sigisemptyset (&set), 1);
  83   }
  84
  85   {
  86     sigset_t set;
  87     sigfillset (&set);
  88     TEST_COMPARE (sigpending (&set), 0);
  89     TEST_COMPARE (sigisemptyset (&set), 1);
  90   }
  91
  92   return 0;
  93 }
  94
  95 #include <support/test-driver.c>