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Member "gnuastro-0.8/bootstrapped/tests/test-pthread_sigmask1.c" (28 Dec 2018, 2494 Bytes) of package /linux/privat/gnuastro-0.8.tar.lz:


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    1 /* Test of pthread_sigmask in a single-threaded program.
    2    Copyright (C) 2011-2018 Free Software Foundation, Inc.
    3 
    4    This program is free software: you can redistribute it and/or modify
    5    it under the terms of the GNU General Public License as published by
    6    the Free Software Foundation; either version 3 of the License, or
    7    (at your option) any later version.
    8 
    9    This program is distributed in the hope that it will be useful,
   10    but WITHOUT ANY WARRANTY; without even the implied warranty of
   11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   12    GNU General Public License for more details.
   13 
   14    You should have received a copy of the GNU General Public License
   15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
   16 
   17 /* Written by Bruno Haible <bruno@clisp.org>, 2011.  */
   18 
   19 #include <config.h>
   20 
   21 #include <signal.h>
   22 
   23 #include "signature.h"
   24 SIGNATURE_CHECK (pthread_sigmask, int, (int, const sigset_t *, sigset_t *));
   25 
   26 #include <errno.h>
   27 #include <stdio.h>
   28 #include <stdlib.h>
   29 #include <unistd.h>
   30 
   31 #include "macros.h"
   32 
   33 #if !(defined _WIN32 && !defined __CYGWIN__)
   34 
   35 static volatile int sigint_occurred;
   36 
   37 static void
   38 sigint_handler (int sig)
   39 {
   40   sigint_occurred++;
   41 }
   42 
   43 int
   44 main (int argc, char *argv[])
   45 {
   46   sigset_t set;
   47   int pid = getpid ();
   48   char command[80];
   49 
   50   signal (SIGINT, sigint_handler);
   51 
   52   sigemptyset (&set);
   53   sigaddset (&set, SIGINT);
   54 
   55   /* Check error handling.  */
   56   ASSERT (pthread_sigmask (1729, &set, NULL) == EINVAL);
   57 
   58   /* Block SIGINT.  */
   59   ASSERT (pthread_sigmask (SIG_BLOCK, &set, NULL) == 0);
   60 
   61   /* Request a SIGINT signal from outside.  */
   62   sprintf (command, "sh -c 'sleep 1; kill -%d %d' &", SIGINT, pid);
   63   ASSERT (system (command) == 0);
   64 
   65   /* Wait.  */
   66   sleep (2);
   67 
   68   /* The signal should not have arrived yet, because it is blocked.  */
   69   ASSERT (sigint_occurred == 0);
   70 
   71   /* Unblock SIGINT.  */
   72   ASSERT (pthread_sigmask (SIG_UNBLOCK, &set, NULL) == 0);
   73 
   74   /* The signal should have arrived now, because POSIX says
   75        "If there are any pending unblocked signals after the call to
   76         pthread_sigmask(), at least one of those signals shall be delivered
   77         before the call to pthread_sigmask() returns."  */
   78   ASSERT (sigint_occurred == 1);
   79 
   80   return 0;
   81 }
   82 
   83 #else
   84 
   85 /* On native Windows, getpid() values and the arguments that are passed to
   86    the (Cygwin?) 'kill' program are not necessarily related.  */
   87 
   88 int
   89 main ()
   90 {
   91   fputs ("Skipping test: native Windows platform\n", stderr);
   92   return 77;
   93 }
   94 
   95 #endif