Mercurial > gnulib
view tests/test-sigaction.c @ 10229:29502a2dd08a
New module sigaction, for mingw.
* modules/sigaction: New module...
* modules/sigaction-tests: ...and its test.
* m4/sigaction.m4: New file.
* lib/sigaction.c: Likewise.
* tests/test-sigaction.c: Likewise.
* m4/signal_h.m4 (gl_SIGNAL_H_DEFAULTS): Add sigaction variables.
* modules/signal (Makefile.am): Likewise.
* lib/signal.in.h (!@HAVE_SIGACTION@): Define replacements when
needed.
* doc/posix-headers/signal.texi (signal.h): Mention provided
types.
* doc/posix-functions/siginterrupt.texi (siginterrupt): Mention
that sigaction is preferable.
* doc/posix-functions/sigaction.texi (sigaction): Mention new
module.
* MODULES.html.sh (Support for systems lacking POSIX:2001): Add
sigaction.
Signed-off-by: Eric Blake <ebb9@byu.net>
author | Eric Blake <ebb9@byu.net> |
---|---|
date | Sat, 21 Jun 2008 14:32:55 -0600 |
parents | |
children | d8fe05396cf4 |
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/* Test of sigaction() function. Copyright (C) 2008 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ /* Written by Eric Blake <ebb9@byu.net>, 2008. */ #include <config.h> #include <signal.h> #include <stdio.h> #include <stdlib.h> #define ASSERT(expr) \ do \ { \ if (!(expr)) \ { \ fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \ fflush (stderr); \ signal (SIGABRT, SIG_DFL); \ abort (); \ } \ } \ while (0) #ifndef SA_SIGINFO # define SA_SIGINFO 0 #endif /* This test is unsafe in the presence of an asynchronous SIGABRT, because we install a signal-handler that is intentionally not async-safe. Hopefully, this does not lead to too many reports of false failures, since people don't generally use 'kill -s SIGABRT' to end a runaway program. */ static void handler (int sig) { static int entry_count; struct sigaction sa; ASSERT (sig == SIGABRT); ASSERT (sigaction (SIGABRT, NULL, &sa) == 0); ASSERT ((sa.sa_flags & SA_SIGINFO) == 0); switch (entry_count++) { case 0: ASSERT ((sa.sa_flags & SA_RESETHAND) == 0); ASSERT (sa.sa_handler == handler); break; case 1: ASSERT (sa.sa_handler == SIG_DFL); break; default: ASSERT (0); } } int main (int argc, char *argv[]) { struct sigaction sa; struct sigaction old_sa; sa.sa_handler = handler; sa.sa_flags = 0; ASSERT (sigemptyset (&sa.sa_mask) == 0); ASSERT (sigaction (SIGABRT, &sa, NULL) == 0); ASSERT (raise (SIGABRT) == 0); sa.sa_flags = SA_RESETHAND | SA_NODEFER; ASSERT (sigaction (SIGABRT, &sa, &old_sa) == 0); ASSERT (old_sa.sa_flags == 0); ASSERT (old_sa.sa_handler == handler); ASSERT (raise (SIGABRT) == 0); sa.sa_handler = SIG_DFL; ASSERT (sigaction (SIGABRT, &sa, &old_sa) == 0); ASSERT ((old_sa.sa_flags & SA_SIGINFO) == 0); ASSERT (old_sa.sa_handler == SIG_DFL); sa.sa_handler = SIG_IGN; ASSERT (sigaction (SIGABRT, &sa, NULL) == 0); ASSERT (raise (SIGABRT) == 0); ASSERT (sigaction (SIGABRT, NULL, &old_sa) == 0); ASSERT (old_sa.sa_handler == SIG_IGN); ASSERT (raise (SIGABRT) == 0); return 0; }