1 /* -*- buffer-read-only: t -*- vi: set ro: */
2 /* DO NOT EDIT! GENERATED AUTOMATICALLY! */
3 /* A GNU-like <signal.h>.
5 Copyright (C) 2006-2013 Free Software Foundation, Inc.
7 This program is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 @PRAGMA_SYSTEM_HEADER@
25 #if defined __need_sig_atomic_t || defined __need_sigset_t || defined _GL_ALREADY_INCLUDING_SIGNAL_H || (defined _SIGNAL_H && !defined __SIZEOF_PTHREAD_MUTEX_T)
26 /* Special invocation convention:
27 - Inside glibc header files.
28 - On glibc systems we have a sequence of nested includes
29 <signal.h> -> <ucontext.h> -> <signal.h>.
30 In this situation, the functions are not yet declared, therefore we cannot
31 provide the C++ aliases.
32 - On glibc systems with GCC 4.3 we have a sequence of nested includes
33 <csignal> -> </usr/include/signal.h> -> <sys/ucontext.h> -> <signal.h>.
34 In this situation, some of the functions are not yet declared, therefore
35 we cannot provide the C++ aliases. */
37 # @INCLUDE_NEXT@ @NEXT_SIGNAL_H@
40 /* Normal invocation convention. */
42 #ifndef _@GUARD_PREFIX@_SIGNAL_H
44 #define _GL_ALREADY_INCLUDING_SIGNAL_H
46 /* Define pid_t, uid_t.
47 Also, mingw defines sigset_t not in <signal.h>, but in <sys/types.h>.
48 On Solaris 10, <signal.h> includes <sys/types.h>, which eventually includes
49 us; so include <sys/types.h> now, before the second inclusion guard. */
50 #include <sys/types.h>
52 /* The include_next requires a split double-inclusion guard. */
53 #@INCLUDE_NEXT@ @NEXT_SIGNAL_H@
55 #undef _GL_ALREADY_INCLUDING_SIGNAL_H
57 #ifndef _@GUARD_PREFIX@_SIGNAL_H
58 #define _@GUARD_PREFIX@_SIGNAL_H
60 /* Mac OS X 10.3, FreeBSD 6.4, OpenBSD 3.8, OSF/1 4.0, Solaris 2.6 declare
61 pthread_sigmask in <pthread.h>, not in <signal.h>.
62 But avoid namespace pollution on glibc systems.*/
63 #if (@GNULIB_PTHREAD_SIGMASK@ || defined GNULIB_POSIXCHECK) \
64 && ((defined __APPLE__ && defined __MACH__) || defined __FreeBSD__ || defined __OpenBSD__ || defined __osf__ || defined __sun) \
65 && ! defined __GLIBC__
69 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
71 /* The definition of _GL_ARG_NONNULL is copied here. */
73 /* The definition of _GL_WARN_ON_USE is copied here. */
75 /* On AIX, sig_atomic_t already includes volatile. C99 requires that
76 'volatile sig_atomic_t' ignore the extra modifier, but C89 did not.
77 Hence, redefine this to a non-volatile type as needed. */
78 #if ! @HAVE_TYPE_VOLATILE_SIG_ATOMIC_T@
79 # if !GNULIB_defined_sig_atomic_t
80 typedef int rpl_sig_atomic_t;
82 # define sig_atomic_t rpl_sig_atomic_t
83 # define GNULIB_defined_sig_atomic_t 1
87 /* A set or mask of signals. */
89 # if !GNULIB_defined_sigset_t
90 typedef unsigned int sigset_t;
91 # define GNULIB_defined_sigset_t 1
95 /* Define sighandler_t, the type of signal handlers. A GNU extension. */
96 #if !@HAVE_SIGHANDLER_T@
100 # if !GNULIB_defined_sighandler_t
101 typedef void (*sighandler_t) (int);
102 # define GNULIB_defined_sighandler_t 1
110 #if @GNULIB_SIGNAL_H_SIGPIPE@
112 /* Define SIGPIPE to a value that does not overlap with other signals. */
114 # define GNULIB_defined_SIGPIPE 1
115 /* To actually use SIGPIPE, you also need the gnulib modules 'sigprocmask',
121 /* Maximum signal number + 1. */
123 # if defined __TANDEM
129 #if @GNULIB_PTHREAD_SIGMASK@
130 # if @REPLACE_PTHREAD_SIGMASK@
131 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
132 # undef pthread_sigmask
133 # define pthread_sigmask rpl_pthread_sigmask
135 _GL_FUNCDECL_RPL (pthread_sigmask, int,
136 (int how, const sigset_t *new_mask, sigset_t *old_mask));
137 _GL_CXXALIAS_RPL (pthread_sigmask, int,
138 (int how, const sigset_t *new_mask, sigset_t *old_mask));
140 # if !@HAVE_PTHREAD_SIGMASK@
141 _GL_FUNCDECL_SYS (pthread_sigmask, int,
142 (int how, const sigset_t *new_mask, sigset_t *old_mask));
144 _GL_CXXALIAS_SYS (pthread_sigmask, int,
145 (int how, const sigset_t *new_mask, sigset_t *old_mask));
147 _GL_CXXALIASWARN (pthread_sigmask);
148 #elif defined GNULIB_POSIXCHECK
149 # undef pthread_sigmask
150 # if HAVE_RAW_DECL_PTHREAD_SIGMASK
151 _GL_WARN_ON_USE (pthread_sigmask, "pthread_sigmask is not portable - "
152 "use gnulib module pthread_sigmask for portability");
159 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
161 # define raise rpl_raise
163 _GL_FUNCDECL_RPL (raise, int, (int sig));
164 _GL_CXXALIAS_RPL (raise, int, (int sig));
167 _GL_FUNCDECL_SYS (raise, int, (int sig));
169 _GL_CXXALIAS_SYS (raise, int, (int sig));
171 _GL_CXXALIASWARN (raise);
172 #elif defined GNULIB_POSIXCHECK
174 /* Assume raise is always declared. */
175 _GL_WARN_ON_USE (raise, "raise can crash on native Windows - "
176 "use gnulib module raise for portability");
180 #if @GNULIB_SIGPROCMASK@
181 # if !@HAVE_POSIX_SIGNALBLOCKING@
183 # ifndef GNULIB_defined_signal_blocking
184 # define GNULIB_defined_signal_blocking 1
187 /* Maximum signal number + 1. */
192 /* This code supports only 32 signals. */
193 # if !GNULIB_defined_verify_NSIG_constraint
194 typedef int verify_NSIG_constraint[NSIG <= 32 ? 1 : -1];
195 # define GNULIB_defined_verify_NSIG_constraint 1
200 /* Test whether a given signal is contained in a signal set. */
201 # if @HAVE_POSIX_SIGNALBLOCKING@
202 /* This function is defined as a macro on Mac OS X. */
203 # if defined __cplusplus && defined GNULIB_NAMESPACE
207 _GL_FUNCDECL_SYS (sigismember, int, (const sigset_t *set, int sig)
208 _GL_ARG_NONNULL ((1)));
210 _GL_CXXALIAS_SYS (sigismember, int, (const sigset_t *set, int sig));
211 _GL_CXXALIASWARN (sigismember);
213 /* Initialize a signal set to the empty set. */
214 # if @HAVE_POSIX_SIGNALBLOCKING@
215 /* This function is defined as a macro on Mac OS X. */
216 # if defined __cplusplus && defined GNULIB_NAMESPACE
220 _GL_FUNCDECL_SYS (sigemptyset, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
222 _GL_CXXALIAS_SYS (sigemptyset, int, (sigset_t *set));
223 _GL_CXXALIASWARN (sigemptyset);
225 /* Add a signal to a signal set. */
226 # if @HAVE_POSIX_SIGNALBLOCKING@
227 /* This function is defined as a macro on Mac OS X. */
228 # if defined __cplusplus && defined GNULIB_NAMESPACE
232 _GL_FUNCDECL_SYS (sigaddset, int, (sigset_t *set, int sig)
233 _GL_ARG_NONNULL ((1)));
235 _GL_CXXALIAS_SYS (sigaddset, int, (sigset_t *set, int sig));
236 _GL_CXXALIASWARN (sigaddset);
238 /* Remove a signal from a signal set. */
239 # if @HAVE_POSIX_SIGNALBLOCKING@
240 /* This function is defined as a macro on Mac OS X. */
241 # if defined __cplusplus && defined GNULIB_NAMESPACE
245 _GL_FUNCDECL_SYS (sigdelset, int, (sigset_t *set, int sig)
246 _GL_ARG_NONNULL ((1)));
248 _GL_CXXALIAS_SYS (sigdelset, int, (sigset_t *set, int sig));
249 _GL_CXXALIASWARN (sigdelset);
251 /* Fill a signal set with all possible signals. */
252 # if @HAVE_POSIX_SIGNALBLOCKING@
253 /* This function is defined as a macro on Mac OS X. */
254 # if defined __cplusplus && defined GNULIB_NAMESPACE
258 _GL_FUNCDECL_SYS (sigfillset, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
260 _GL_CXXALIAS_SYS (sigfillset, int, (sigset_t *set));
261 _GL_CXXALIASWARN (sigfillset);
263 /* Return the set of those blocked signals that are pending. */
264 # if !@HAVE_POSIX_SIGNALBLOCKING@
265 _GL_FUNCDECL_SYS (sigpending, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
267 _GL_CXXALIAS_SYS (sigpending, int, (sigset_t *set));
268 _GL_CXXALIASWARN (sigpending);
270 /* If OLD_SET is not NULL, put the current set of blocked signals in *OLD_SET.
271 Then, if SET is not NULL, affect the current set of blocked signals by
272 combining it with *SET as indicated in OPERATION.
273 In this implementation, you are not allowed to change a signal handler
274 while the signal is blocked. */
275 # if !@HAVE_POSIX_SIGNALBLOCKING@
276 # define SIG_BLOCK 0 /* blocked_set = blocked_set | *set; */
277 # define SIG_SETMASK 1 /* blocked_set = *set; */
278 # define SIG_UNBLOCK 2 /* blocked_set = blocked_set & ~*set; */
279 _GL_FUNCDECL_SYS (sigprocmask, int,
280 (int operation, const sigset_t *set, sigset_t *old_set));
282 _GL_CXXALIAS_SYS (sigprocmask, int,
283 (int operation, const sigset_t *set, sigset_t *old_set));
284 _GL_CXXALIASWARN (sigprocmask);
286 /* Install the handler FUNC for signal SIG, and return the previous
291 # if !GNULIB_defined_function_taking_int_returning_void_t
292 typedef void (*_gl_function_taking_int_returning_void_t) (int);
293 # define GNULIB_defined_function_taking_int_returning_void_t 1
298 # if !@HAVE_POSIX_SIGNALBLOCKING@
299 # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
300 # define signal rpl_signal
302 _GL_FUNCDECL_RPL (signal, _gl_function_taking_int_returning_void_t,
303 (int sig, _gl_function_taking_int_returning_void_t func));
304 _GL_CXXALIAS_RPL (signal, _gl_function_taking_int_returning_void_t,
305 (int sig, _gl_function_taking_int_returning_void_t func));
307 _GL_CXXALIAS_SYS (signal, _gl_function_taking_int_returning_void_t,
308 (int sig, _gl_function_taking_int_returning_void_t func));
310 _GL_CXXALIASWARN (signal);
312 # if !@HAVE_POSIX_SIGNALBLOCKING@ && GNULIB_defined_SIGPIPE
313 /* Raise signal SIGPIPE. */
314 _GL_EXTERN_C int _gl_raise_SIGPIPE (void);
317 #elif defined GNULIB_POSIXCHECK
319 # if HAVE_RAW_DECL_SIGADDSET
320 _GL_WARN_ON_USE (sigaddset, "sigaddset is unportable - "
321 "use the gnulib module sigprocmask for portability");
324 # if HAVE_RAW_DECL_SIGDELSET
325 _GL_WARN_ON_USE (sigdelset, "sigdelset is unportable - "
326 "use the gnulib module sigprocmask for portability");
329 # if HAVE_RAW_DECL_SIGEMPTYSET
330 _GL_WARN_ON_USE (sigemptyset, "sigemptyset is unportable - "
331 "use the gnulib module sigprocmask for portability");
334 # if HAVE_RAW_DECL_SIGFILLSET
335 _GL_WARN_ON_USE (sigfillset, "sigfillset is unportable - "
336 "use the gnulib module sigprocmask for portability");
339 # if HAVE_RAW_DECL_SIGISMEMBER
340 _GL_WARN_ON_USE (sigismember, "sigismember is unportable - "
341 "use the gnulib module sigprocmask for portability");
344 # if HAVE_RAW_DECL_SIGPENDING
345 _GL_WARN_ON_USE (sigpending, "sigpending is unportable - "
346 "use the gnulib module sigprocmask for portability");
349 # if HAVE_RAW_DECL_SIGPROCMASK
350 _GL_WARN_ON_USE (sigprocmask, "sigprocmask is unportable - "
351 "use the gnulib module sigprocmask for portability");
353 #endif /* @GNULIB_SIGPROCMASK@ */
356 #if @GNULIB_SIGACTION@
357 # if !@HAVE_SIGACTION@
359 # if !@HAVE_SIGINFO_T@
361 # if !GNULIB_defined_siginfo_types
363 /* Present to allow compilation, but unsupported by gnulib. */
370 /* Present to allow compilation, but unsupported by gnulib. */
381 union sigval si_value;
383 typedef struct siginfo_t siginfo_t;
385 # define GNULIB_defined_siginfo_types 1
388 # endif /* !@HAVE_SIGINFO_T@ */
390 /* We assume that platforms which lack the sigaction() function also lack
391 the 'struct sigaction' type, and vice versa. */
393 # if !GNULIB_defined_struct_sigaction
399 void (*_sa_handler) (int);
400 /* Present to allow compilation, but unsupported by gnulib. POSIX
401 says that implementations may, but not must, make sa_sigaction
402 overlap with sa_handler, but we know of no implementation where
403 they do not overlap. */
404 void (*_sa_sigaction) (int, siginfo_t *, void *);
407 /* Not all POSIX flags are supported. */
410 # define sa_handler _sa_func._sa_handler
411 # define sa_sigaction _sa_func._sa_sigaction
412 /* Unsupported flags are not present. */
413 # define SA_RESETHAND 1
414 # define SA_NODEFER 2
415 # define SA_RESTART 4
417 # define GNULIB_defined_struct_sigaction 1
420 _GL_FUNCDECL_SYS (sigaction, int, (int, const struct sigaction *restrict,
421 struct sigaction *restrict));
423 # elif !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@
425 # define sa_sigaction sa_handler
427 # endif /* !@HAVE_SIGACTION@, !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@ */
429 _GL_CXXALIAS_SYS (sigaction, int, (int, const struct sigaction *restrict,
430 struct sigaction *restrict));
431 _GL_CXXALIASWARN (sigaction);
433 #elif defined GNULIB_POSIXCHECK
435 # if HAVE_RAW_DECL_SIGACTION
436 _GL_WARN_ON_USE (sigaction, "sigaction is unportable - "
437 "use the gnulib module sigaction for portability");
441 /* Some systems don't have SA_NODEFER. */
443 # define SA_NODEFER 0
447 #endif /* _@GUARD_PREFIX@_SIGNAL_H */
448 #endif /* _@GUARD_PREFIX@_SIGNAL_H */