[bpt/emacs.git] / lib / signal.in.h

/* A GNU-like <signal.h>.

   Copyright (C) 2006-2011 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/>.  */

#if __GNUC__ >= 3
@PRAGMA_SYSTEM_HEADER@
#endif
@PRAGMA_COLUMNS@

#if defined __need_sig_atomic_t || defined __need_sigset_t
/* Special invocation convention inside glibc header files.  */

# @INCLUDE_NEXT@ @NEXT_SIGNAL_H@

#else
/* Normal invocation convention.  */

#ifndef _@GUARD_PREFIX@_SIGNAL_H

/* Define pid_t, uid_t.
   Also, mingw defines sigset_t not in <signal.h>, but in <sys/types.h>.
   On Solaris 10, <signal.h> includes <sys/types.h>, which eventually includes
   us; so include <sys/types.h> now, before the second inclusion guard.  */
#include <sys/types.h>

/* The include_next requires a split double-inclusion guard.  */
#@INCLUDE_NEXT@ @NEXT_SIGNAL_H@

#ifndef _@GUARD_PREFIX@_SIGNAL_H
#define _@GUARD_PREFIX@_SIGNAL_H

/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */

/* The definition of _GL_ARG_NONNULL is copied here.  */

/* The definition of _GL_WARN_ON_USE is copied here.  */

/* On AIX, sig_atomic_t already includes volatile.  C99 requires that
   'volatile sig_atomic_t' ignore the extra modifier, but C89 did not.
   Hence, redefine this to a non-volatile type as needed.  */
#if ! @HAVE_TYPE_VOLATILE_SIG_ATOMIC_T@
# if !GNULIB_defined_sig_atomic_t
typedef int rpl_sig_atomic_t;
#  undef sig_atomic_t
#  define sig_atomic_t rpl_sig_atomic_t
#  define GNULIB_defined_sig_atomic_t 1
# endif
#endif

/* A set or mask of signals.  */
#if !@HAVE_SIGSET_T@
# if !GNULIB_defined_sigset_t
typedef unsigned int sigset_t;
#  define GNULIB_defined_sigset_t 1
# endif
#endif

/* Define sighandler_t, the type of signal handlers.  A GNU extension.  */
#if !@HAVE_SIGHANDLER_T@
# ifdef __cplusplus
extern "C" {
# endif
# if !GNULIB_defined_sighandler_t
typedef void (*sighandler_t) (int);
#  define GNULIB_defined_sighandler_t 1
# endif
# ifdef __cplusplus
}
# endif
#endif


#if @GNULIB_SIGNAL_H_SIGPIPE@
# ifndef SIGPIPE
/* Define SIGPIPE to a value that does not overlap with other signals.  */
#  define SIGPIPE 13
#  define GNULIB_defined_SIGPIPE 1
/* To actually use SIGPIPE, you also need the gnulib modules 'sigprocmask',
   'write', 'stdio'.  */
# endif
#endif


/* Maximum signal number + 1.  */
#ifndef NSIG
# if defined __TANDEM
#  define NSIG 32
# endif
#endif


#if @GNULIB_PTHREAD_SIGMASK@
# if @REPLACE_PTHREAD_SIGMASK@
#  undef pthread_sigmask
#  define pthread_sigmask sigprocmask
# endif
#elif defined GNULIB_POSIXCHECK
# undef pthread_sigmask
# if HAVE_RAW_DECL_PTHREAD_SIGMASK
_GL_WARN_ON_USE (pthread_sigmask, "pthread_sigmask is not portable - "
                 "use gnulib module pthread_sigmask for portability");
# endif
#endif


#if @GNULIB_SIGPROCMASK@
# if !@HAVE_POSIX_SIGNALBLOCKING@

/* Maximum signal number + 1.  */
#  ifndef NSIG
#   define NSIG 32
#  endif

/* This code supports only 32 signals.  */
#  if !GNULIB_defined_verify_NSIG_constraint
typedef int verify_NSIG_constraint[NSIG <= 32 ? 1 : -1];
#   define GNULIB_defined_verify_NSIG_constraint 1
#  endif

# endif

/* Test whether a given signal is contained in a signal set.  */
# if @HAVE_POSIX_SIGNALBLOCKING@
/* This function is defined as a macro on MacOS X.  */
#  if defined __cplusplus && defined GNULIB_NAMESPACE
#   undef sigismember
#  endif
# else
_GL_FUNCDECL_SYS (sigismember, int, (const sigset_t *set, int sig)
                                    _GL_ARG_NONNULL ((1)));
# endif
_GL_CXXALIAS_SYS (sigismember, int, (const sigset_t *set, int sig));
_GL_CXXALIASWARN (sigismember);

/* Initialize a signal set to the empty set.  */
# if @HAVE_POSIX_SIGNALBLOCKING@
/* This function is defined as a macro on MacOS X.  */
#  if defined __cplusplus && defined GNULIB_NAMESPACE
#   undef sigemptyset
#  endif
# else
_GL_FUNCDECL_SYS (sigemptyset, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
# endif
_GL_CXXALIAS_SYS (sigemptyset, int, (sigset_t *set));
_GL_CXXALIASWARN (sigemptyset);

/* Add a signal to a signal set.  */
# if @HAVE_POSIX_SIGNALBLOCKING@
/* This function is defined as a macro on MacOS X.  */
#  if defined __cplusplus && defined GNULIB_NAMESPACE
#   undef sigaddset
#  endif
# else
_GL_FUNCDECL_SYS (sigaddset, int, (sigset_t *set, int sig)
                                  _GL_ARG_NONNULL ((1)));
# endif
_GL_CXXALIAS_SYS (sigaddset, int, (sigset_t *set, int sig));
_GL_CXXALIASWARN (sigaddset);

/* Remove a signal from a signal set.  */
# if @HAVE_POSIX_SIGNALBLOCKING@
/* This function is defined as a macro on MacOS X.  */
#  if defined __cplusplus && defined GNULIB_NAMESPACE
#   undef sigdelset
#  endif
# else
_GL_FUNCDECL_SYS (sigdelset, int, (sigset_t *set, int sig)
                                  _GL_ARG_NONNULL ((1)));
# endif
_GL_CXXALIAS_SYS (sigdelset, int, (sigset_t *set, int sig));
_GL_CXXALIASWARN (sigdelset);

/* Fill a signal set with all possible signals.  */
# if @HAVE_POSIX_SIGNALBLOCKING@
/* This function is defined as a macro on MacOS X.  */
#  if defined __cplusplus && defined GNULIB_NAMESPACE
#   undef sigfillset
#  endif
# else
_GL_FUNCDECL_SYS (sigfillset, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
# endif
_GL_CXXALIAS_SYS (sigfillset, int, (sigset_t *set));
_GL_CXXALIASWARN (sigfillset);

/* Return the set of those blocked signals that are pending.  */
# if !@HAVE_POSIX_SIGNALBLOCKING@
_GL_FUNCDECL_SYS (sigpending, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
# endif
_GL_CXXALIAS_SYS (sigpending, int, (sigset_t *set));
_GL_CXXALIASWARN (sigpending);

/* If OLD_SET is not NULL, put the current set of blocked signals in *OLD_SET.
   Then, if SET is not NULL, affect the current set of blocked signals by
   combining it with *SET as indicated in OPERATION.
   In this implementation, you are not allowed to change a signal handler
   while the signal is blocked.  */
# if !@HAVE_POSIX_SIGNALBLOCKING@
#  define SIG_BLOCK   0  /* blocked_set = blocked_set | *set; */
#  define SIG_SETMASK 1  /* blocked_set = *set; */
#  define SIG_UNBLOCK 2  /* blocked_set = blocked_set & ~*set; */
_GL_FUNCDECL_SYS (sigprocmask, int,
                  (int operation, const sigset_t *set, sigset_t *old_set));
# endif
_GL_CXXALIAS_SYS (sigprocmask, int,
                  (int operation, const sigset_t *set, sigset_t *old_set));
_GL_CXXALIASWARN (sigprocmask);

/* Install the handler FUNC for signal SIG, and return the previous
   handler.  */
# ifdef __cplusplus
extern "C" {
# endif
# if !GNULIB_defined_function_taking_int_returning_void_t
typedef void (*_gl_function_taking_int_returning_void_t) (int);
#  define GNULIB_defined_function_taking_int_returning_void_t 1
# endif
# ifdef __cplusplus
}
# endif
# if !@HAVE_POSIX_SIGNALBLOCKING@
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   define signal rpl_signal
#  endif
_GL_FUNCDECL_RPL (signal, _gl_function_taking_int_returning_void_t,
                  (int sig, _gl_function_taking_int_returning_void_t func));
_GL_CXXALIAS_RPL (signal, _gl_function_taking_int_returning_void_t,
                  (int sig, _gl_function_taking_int_returning_void_t func));
# else
_GL_CXXALIAS_SYS (signal, _gl_function_taking_int_returning_void_t,
                  (int sig, _gl_function_taking_int_returning_void_t func));
# endif
_GL_CXXALIASWARN (signal);

/* Raise signal SIG.  */
# if !@HAVE_POSIX_SIGNALBLOCKING@ && GNULIB_defined_SIGPIPE
#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
#   undef raise
#   define raise rpl_raise
#  endif
_GL_FUNCDECL_RPL (raise, int, (int sig));
_GL_CXXALIAS_RPL (raise, int, (int sig));
# else
_GL_CXXALIAS_SYS (raise, int, (int sig));
# endif
_GL_CXXALIASWARN (raise);

#elif defined GNULIB_POSIXCHECK
# undef sigaddset
# if HAVE_RAW_DECL_SIGADDSET
_GL_WARN_ON_USE (sigaddset, "sigaddset is unportable - "
                 "use the gnulib module sigprocmask for portability");
# endif
# undef sigdelset
# if HAVE_RAW_DECL_SIGDELSET
_GL_WARN_ON_USE (sigdelset, "sigdelset is unportable - "
                 "use the gnulib module sigprocmask for portability");
# endif
# undef sigemptyset
# if HAVE_RAW_DECL_SIGEMPTYSET
_GL_WARN_ON_USE (sigemptyset, "sigemptyset is unportable - "
                 "use the gnulib module sigprocmask for portability");
# endif
# undef sigfillset
# if HAVE_RAW_DECL_SIGFILLSET
_GL_WARN_ON_USE (sigfillset, "sigfillset is unportable - "
                 "use the gnulib module sigprocmask for portability");
# endif
# undef sigismember
# if HAVE_RAW_DECL_SIGISMEMBER
_GL_WARN_ON_USE (sigismember, "sigismember is unportable - "
                 "use the gnulib module sigprocmask for portability");
# endif
# undef sigpending
# if HAVE_RAW_DECL_SIGPENDING
_GL_WARN_ON_USE (sigpending, "sigpending is unportable - "
                 "use the gnulib module sigprocmask for portability");
# endif
# undef sigprocmask
# if HAVE_RAW_DECL_SIGPROCMASK
_GL_WARN_ON_USE (sigprocmask, "sigprocmask is unportable - "
                 "use the gnulib module sigprocmask for portability");
# endif
#endif /* @GNULIB_SIGPROCMASK@ */


#if @GNULIB_SIGACTION@
# if !@HAVE_SIGACTION@

#  if !@HAVE_SIGINFO_T@

#   if !GNULIB_defined_siginfo_types

/* Present to allow compilation, but unsupported by gnulib.  */
union sigval
{
  int sival_int;
  void *sival_ptr;
};

/* Present to allow compilation, but unsupported by gnulib.  */
struct siginfo_t
{
  int si_signo;
  int si_code;
  int si_errno;
  pid_t si_pid;
  uid_t si_uid;
  void *si_addr;
  int si_status;
  long si_band;
  union sigval si_value;
};
typedef struct siginfo_t siginfo_t;

#    define GNULIB_defined_siginfo_types 1
#   endif

#  endif /* !@HAVE_SIGINFO_T@ */

/* We assume that platforms which lack the sigaction() function also lack
   the 'struct sigaction' type, and vice versa.  */

#  if !GNULIB_defined_struct_sigaction

struct sigaction
{
  union
  {
    void (*_sa_handler) (int);
    /* Present to allow compilation, but unsupported by gnulib.  POSIX
       says that implementations may, but not must, make sa_sigaction
       overlap with sa_handler, but we know of no implementation where
       they do not overlap.  */
    void (*_sa_sigaction) (int, siginfo_t *, void *);
  } _sa_func;
  sigset_t sa_mask;
  /* Not all POSIX flags are supported.  */
  int sa_flags;
};
#   define sa_handler _sa_func._sa_handler
#   define sa_sigaction _sa_func._sa_sigaction
/* Unsupported flags are not present.  */
#   define SA_RESETHAND 1
#   define SA_NODEFER 2
#   define SA_RESTART 4

#   define GNULIB_defined_struct_sigaction 1
#  endif

_GL_FUNCDECL_SYS (sigaction, int, (int, const struct sigaction *restrict,
                                   struct sigaction *restrict));

# elif !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@

#  define sa_sigaction sa_handler

# endif /* !@HAVE_SIGACTION@, !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@ */

_GL_CXXALIAS_SYS (sigaction, int, (int, const struct sigaction *restrict,
                                   struct sigaction *restrict));
_GL_CXXALIASWARN (sigaction);

#elif defined GNULIB_POSIXCHECK
# undef sigaction
# if HAVE_RAW_DECL_SIGACTION
_GL_WARN_ON_USE (sigaction, "sigaction is unportable - "
                 "use the gnulib module sigaction for portability");
# endif
#endif

/* Some systems don't have SA_NODEFER.  */
#ifndef SA_NODEFER
# define SA_NODEFER 0
#endif


#endif /* _@GUARD_PREFIX@_SIGNAL_H */
#endif /* _@GUARD_PREFIX@_SIGNAL_H */
#endif
Commit	Line	Data
6db30f83 PE	1	/* A GNU-like <signal.h>.
	2
	3	Copyright (C) 2006-2011 Free Software Foundation, Inc.
	4
	5	This program is free software: you can redistribute it and/or modify
	6	it under the terms of the GNU General Public License as published by
	7	the Free Software Foundation; either version 3 of the License, or
	8	(at your option) any later version.
	9
	10	This program 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
	13	GNU General Public License for more details.
	14
	15	You should have received a copy of the GNU General Public License
	16	along with this program. If not, see <http://www.gnu.org/licenses/>. */
	17
	18	#if __GNUC__ >= 3
	19	@PRAGMA_SYSTEM_HEADER@
	20	#endif
	21	@PRAGMA_COLUMNS@
	22
	23	#if defined __need_sig_atomic_t \|\| defined __need_sigset_t
	24	/* Special invocation convention inside glibc header files. */
	25
	26	# @INCLUDE_NEXT@ @NEXT_SIGNAL_H@
	27
	28	#else
	29	/* Normal invocation convention. */
	30
	31	#ifndef _@GUARD_PREFIX@_SIGNAL_H
	32
	33	/* Define pid_t, uid_t.
	34	Also, mingw defines sigset_t not in <signal.h>, but in <sys/types.h>.
	35	On Solaris 10, <signal.h> includes <sys/types.h>, which eventually includes
	36	us; so include <sys/types.h> now, before the second inclusion guard. */
	37	#include <sys/types.h>
	38
	39	/* The include_next requires a split double-inclusion guard. */
	40	#@INCLUDE_NEXT@ @NEXT_SIGNAL_H@
	41
	42	#ifndef _@GUARD_PREFIX@_SIGNAL_H
	43	#define _@GUARD_PREFIX@_SIGNAL_H
	44
	45	/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
	46
	47	/* The definition of _GL_ARG_NONNULL is copied here. */
	48
	49	/* The definition of _GL_WARN_ON_USE is copied here. */
	50
	51	/* On AIX, sig_atomic_t already includes volatile. C99 requires that
	52	'volatile sig_atomic_t' ignore the extra modifier, but C89 did not.
	53	Hence, redefine this to a non-volatile type as needed. */
	54	#if ! @HAVE_TYPE_VOLATILE_SIG_ATOMIC_T@
	55	# if !GNULIB_defined_sig_atomic_t
	56	typedef int rpl_sig_atomic_t;
	57	# undef sig_atomic_t
	58	# define sig_atomic_t rpl_sig_atomic_t
	59	# define GNULIB_defined_sig_atomic_t 1
	60	# endif
	61	#endif
	62
	63	/* A set or mask of signals. */
	64	#if !@HAVE_SIGSET_T@
65	# if !GNULIB_defined_sigset_t
66	typedef unsigned int sigset_t;
67	# define GNULIB_defined_sigset_t 1
68	# endif
69	#endif
70
71	/* Define sighandler_t, the type of signal handlers. A GNU extension. */
72	#if !@HAVE_SIGHANDLER_T@
73	# ifdef __cplusplus
74	extern "C" {
75	# endif
76	# if !GNULIB_defined_sighandler_t
77	typedef void (*sighandler_t) (int);
78	# define GNULIB_defined_sighandler_t 1
79	# endif
80	# ifdef __cplusplus
81	}
82	# endif
83	#endif
84
85
86	#if @GNULIB_SIGNAL_H_SIGPIPE@
87	# ifndef SIGPIPE
88	/* Define SIGPIPE to a value that does not overlap with other signals. */
89	# define SIGPIPE 13
90	# define GNULIB_defined_SIGPIPE 1
91	/* To actually use SIGPIPE, you also need the gnulib modules 'sigprocmask',
92	'write', 'stdio'. */
93	# endif
94	#endif
95
96
97	/* Maximum signal number + 1. */
98	#ifndef NSIG
99	# if defined __TANDEM
100	# define NSIG 32
101	# endif
102	#endif
103
104
105	#if @GNULIB_PTHREAD_SIGMASK@
106	# if @REPLACE_PTHREAD_SIGMASK@
107	# undef pthread_sigmask
108	# define pthread_sigmask sigprocmask
109	# endif
110	#elif defined GNULIB_POSIXCHECK
111	# undef pthread_sigmask
112	# if HAVE_RAW_DECL_PTHREAD_SIGMASK
113	_GL_WARN_ON_USE (pthread_sigmask, "pthread_sigmask is not portable - "
114	"use gnulib module pthread_sigmask for portability");
115	# endif
116	#endif
117
118
119	#if @GNULIB_SIGPROCMASK@
120	# if !@HAVE_POSIX_SIGNALBLOCKING@
121
122	/* Maximum signal number + 1. */
123	# ifndef NSIG
124	# define NSIG 32
125	# endif
126
127	/* This code supports only 32 signals. */
128	# if !GNULIB_defined_verify_NSIG_constraint
129	typedef int verify_NSIG_constraint[NSIG <= 32 ? 1 : -1];
130	# define GNULIB_defined_verify_NSIG_constraint 1
131	# endif
132
133	# endif
134
135	/* Test whether a given signal is contained in a signal set. */
136	# if @HAVE_POSIX_SIGNALBLOCKING@
137	/* This function is defined as a macro on MacOS X. */
138	# if defined __cplusplus && defined GNULIB_NAMESPACE
139	# undef sigismember
140	# endif
141	# else
142	_GL_FUNCDECL_SYS (sigismember, int, (const sigset_t *set, int sig)
143	_GL_ARG_NONNULL ((1)));
144	# endif
145	_GL_CXXALIAS_SYS (sigismember, int, (const sigset_t *set, int sig));
146	_GL_CXXALIASWARN (sigismember);
147
148	/* Initialize a signal set to the empty set. */
149	# if @HAVE_POSIX_SIGNALBLOCKING@
150	/* This function is defined as a macro on MacOS X. */
151	# if defined __cplusplus && defined GNULIB_NAMESPACE
152	# undef sigemptyset
153	# endif
154	# else
155	_GL_FUNCDECL_SYS (sigemptyset, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
156	# endif
157	_GL_CXXALIAS_SYS (sigemptyset, int, (sigset_t *set));
158	_GL_CXXALIASWARN (sigemptyset);
159
160	/* Add a signal to a signal set. */
161	# if @HAVE_POSIX_SIGNALBLOCKING@
162	/* This function is defined as a macro on MacOS X. */
163	# if defined __cplusplus && defined GNULIB_NAMESPACE
164	# undef sigaddset
165	# endif
166	# else
167	_GL_FUNCDECL_SYS (sigaddset, int, (sigset_t *set, int sig)
168	_GL_ARG_NONNULL ((1)));
169	# endif
170	_GL_CXXALIAS_SYS (sigaddset, int, (sigset_t *set, int sig));
171	_GL_CXXALIASWARN (sigaddset);
172
173	/* Remove a signal from a signal set. */
174	# if @HAVE_POSIX_SIGNALBLOCKING@
175	/* This function is defined as a macro on MacOS X. */
176	# if defined __cplusplus && defined GNULIB_NAMESPACE
177	# undef sigdelset
178	# endif
179	# else
180	_GL_FUNCDECL_SYS (sigdelset, int, (sigset_t *set, int sig)
181	_GL_ARG_NONNULL ((1)));
182	# endif
183	_GL_CXXALIAS_SYS (sigdelset, int, (sigset_t *set, int sig));
184	_GL_CXXALIASWARN (sigdelset);
185
186	/* Fill a signal set with all possible signals. */
187	# if @HAVE_POSIX_SIGNALBLOCKING@
188	/* This function is defined as a macro on MacOS X. */
189	# if defined __cplusplus && defined GNULIB_NAMESPACE
190	# undef sigfillset
191	# endif
192	# else
193	_GL_FUNCDECL_SYS (sigfillset, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
194	# endif
195	_GL_CXXALIAS_SYS (sigfillset, int, (sigset_t *set));
196	_GL_CXXALIASWARN (sigfillset);
197
198	/* Return the set of those blocked signals that are pending. */
199	# if !@HAVE_POSIX_SIGNALBLOCKING@
200	_GL_FUNCDECL_SYS (sigpending, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
201	# endif
202	_GL_CXXALIAS_SYS (sigpending, int, (sigset_t *set));
203	_GL_CXXALIASWARN (sigpending);
204
205	/* If OLD_SET is not NULL, put the current set of blocked signals in *OLD_SET.
206	Then, if SET is not NULL, affect the current set of blocked signals by
207	combining it with *SET as indicated in OPERATION.
208	In this implementation, you are not allowed to change a signal handler
209	while the signal is blocked. */
210	# if !@HAVE_POSIX_SIGNALBLOCKING@
211	# define SIG_BLOCK 0 /* blocked_set = blocked_set \| set; /
212	# define SIG_SETMASK 1 /* blocked_set = set; /
213	# define SIG_UNBLOCK 2 /* blocked_set = blocked_set & ~set; /
214	_GL_FUNCDECL_SYS (sigprocmask, int,
215	(int operation, const sigset_t set, sigset_t old_set));
216	# endif
217	_GL_CXXALIAS_SYS (sigprocmask, int,
218	(int operation, const sigset_t set, sigset_t old_set));
219	_GL_CXXALIASWARN (sigprocmask);
220
221	/* Install the handler FUNC for signal SIG, and return the previous
222	handler. */
223	# ifdef __cplusplus
224	extern "C" {
225	# endif
226	# if !GNULIB_defined_function_taking_int_returning_void_t
227	typedef void (*_gl_function_taking_int_returning_void_t) (int);
228	# define GNULIB_defined_function_taking_int_returning_void_t 1
229	# endif
230	# ifdef __cplusplus
231	}
232	# endif
233	# if !@HAVE_POSIX_SIGNALBLOCKING@
234	# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
235	# define signal rpl_signal
236	# endif
237	_GL_FUNCDECL_RPL (signal, _gl_function_taking_int_returning_void_t,
238	(int sig, _gl_function_taking_int_returning_void_t func));
239	_GL_CXXALIAS_RPL (signal, _gl_function_taking_int_returning_void_t,
240	(int sig, _gl_function_taking_int_returning_void_t func));
241	# else
242	_GL_CXXALIAS_SYS (signal, _gl_function_taking_int_returning_void_t,
243	(int sig, _gl_function_taking_int_returning_void_t func));
244	# endif
245	_GL_CXXALIASWARN (signal);
246
247	/* Raise signal SIG. */
248	# if !@HAVE_POSIX_SIGNALBLOCKING@ && GNULIB_defined_SIGPIPE
249	# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
250	# undef raise
251	# define raise rpl_raise
252	# endif
253	_GL_FUNCDECL_RPL (raise, int, (int sig));
254	_GL_CXXALIAS_RPL (raise, int, (int sig));
255	# else
256	_GL_CXXALIAS_SYS (raise, int, (int sig));
257	# endif
258	_GL_CXXALIASWARN (raise);
259
260	#elif defined GNULIB_POSIXCHECK
261	# undef sigaddset
262	# if HAVE_RAW_DECL_SIGADDSET
263	_GL_WARN_ON_USE (sigaddset, "sigaddset is unportable - "
264	"use the gnulib module sigprocmask for portability");
265	# endif
266	# undef sigdelset
267	# if HAVE_RAW_DECL_SIGDELSET
268	_GL_WARN_ON_USE (sigdelset, "sigdelset is unportable - "
269	"use the gnulib module sigprocmask for portability");
270	# endif
271	# undef sigemptyset
272	# if HAVE_RAW_DECL_SIGEMPTYSET
273	_GL_WARN_ON_USE (sigemptyset, "sigemptyset is unportable - "
274	"use the gnulib module sigprocmask for portability");
275	# endif
276	# undef sigfillset
277	# if HAVE_RAW_DECL_SIGFILLSET
278	_GL_WARN_ON_USE (sigfillset, "sigfillset is unportable - "
279	"use the gnulib module sigprocmask for portability");
280	# endif
281	# undef sigismember
282	# if HAVE_RAW_DECL_SIGISMEMBER
283	_GL_WARN_ON_USE (sigismember, "sigismember is unportable - "
284	"use the gnulib module sigprocmask for portability");
285	# endif
286	# undef sigpending
287	# if HAVE_RAW_DECL_SIGPENDING
288	_GL_WARN_ON_USE (sigpending, "sigpending is unportable - "
289	"use the gnulib module sigprocmask for portability");
290	# endif
291	# undef sigprocmask
292	# if HAVE_RAW_DECL_SIGPROCMASK
293	_GL_WARN_ON_USE (sigprocmask, "sigprocmask is unportable - "
294	"use the gnulib module sigprocmask for portability");
295	# endif
296	#endif /* @GNULIB_SIGPROCMASK@ */
297
298
299	#if @GNULIB_SIGACTION@
300	# if !@HAVE_SIGACTION@
301
302	# if !@HAVE_SIGINFO_T@
303
304	# if !GNULIB_defined_siginfo_types
305
306	/* Present to allow compilation, but unsupported by gnulib. */
307	union sigval
308	{
309	int sival_int;
310	void *sival_ptr;
311	};
312
313	/* Present to allow compilation, but unsupported by gnulib. */
314	struct siginfo_t
315	{
316	int si_signo;
317	int si_code;
318	int si_errno;
319	pid_t si_pid;
320	uid_t si_uid;
321	void *si_addr;
322	int si_status;
323	long si_band;
324	union sigval si_value;
325	};
326	typedef struct siginfo_t siginfo_t;
327
328	# define GNULIB_defined_siginfo_types 1
329	# endif
330
331	# endif /* !@HAVE_SIGINFO_T@ */
332
333	/* We assume that platforms which lack the sigaction() function also lack
334	the 'struct sigaction' type, and vice versa. */
335
336	# if !GNULIB_defined_struct_sigaction
337
338	struct sigaction
339	{
340	union
341	{
342	void (*_sa_handler) (int);
343	/* Present to allow compilation, but unsupported by gnulib. POSIX
344	says that implementations may, but not must, make sa_sigaction
345	overlap with sa_handler, but we know of no implementation where
346	they do not overlap. */
347	void (_sa_sigaction) (int, siginfo_t , void *);
348	} _sa_func;
349	sigset_t sa_mask;
350	/* Not all POSIX flags are supported. */
351	int sa_flags;
352	};
353	# define sa_handler _sa_func._sa_handler
354	# define sa_sigaction _sa_func._sa_sigaction
355	/* Unsupported flags are not present. */
356	# define SA_RESETHAND 1
357	# define SA_NODEFER 2
358	# define SA_RESTART 4
359
360	# define GNULIB_defined_struct_sigaction 1
361	# endif
362
363	_GL_FUNCDECL_SYS (sigaction, int, (int, const struct sigaction *restrict,
364	struct sigaction *restrict));
365
366	# elif !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@
367
368	# define sa_sigaction sa_handler
369
370	# endif /* !@HAVE_SIGACTION@, !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@ */
371
372	_GL_CXXALIAS_SYS (sigaction, int, (int, const struct sigaction *restrict,
373	struct sigaction *restrict));
374	_GL_CXXALIASWARN (sigaction);
375
376	#elif defined GNULIB_POSIXCHECK
377	# undef sigaction
378	# if HAVE_RAW_DECL_SIGACTION
379	_GL_WARN_ON_USE (sigaction, "sigaction is unportable - "
380	"use the gnulib module sigaction for portability");
381	# endif
382	#endif
383
384	/* Some systems don't have SA_NODEFER. */
385	#ifndef SA_NODEFER
386	# define SA_NODEFER 0
387	#endif
388
389
390	#endif /* _@GUARD_PREFIX@_SIGNAL_H */
391	#endif /* _@GUARD_PREFIX@_SIGNAL_H */
392	#endif