+
−/* A GNU-like <signal.h>.
+
−
+
−   Copyright (C) 2006-2013 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 || defined _GL_ALREADY_INCLUDING_SIGNAL_H || (defined _SIGNAL_H && !defined __SIZEOF_PTHREAD_MUTEX_T)
+
−/* Special invocation convention:
+
−   - Inside glibc header files.
+
−   - On glibc systems we have a sequence of nested includes
+
−     <signal.h> -> <ucontext.h> -> <signal.h>.
+
−     In this situation, the functions are not yet declared, therefore we cannot
+
−     provide the C++ aliases.
+
−   - On glibc systems with GCC 4.3 we have a sequence of nested includes
+
−     <csignal> -> </usr/include/signal.h> -> <sys/ucontext.h> -> <signal.h>.
+
−     In this situation, some of the functions are not yet declared, therefore
+
−     we cannot provide the C++ aliases.  */
+
−
+
−# @INCLUDE_NEXT@ @NEXT_SIGNAL_H@
+
−
+
−#else
+
−/* Normal invocation convention.  */
+
−
+
−#ifndef _@GUARD_PREFIX@_SIGNAL_H
+
−
+
−#define _GL_ALREADY_INCLUDING_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@
+
−
+
−#undef _GL_ALREADY_INCLUDING_SIGNAL_H
+
−
+
−#ifndef _@GUARD_PREFIX@_SIGNAL_H
+
−#define _@GUARD_PREFIX@_SIGNAL_H
+
−
+
−/* Mac OS X 10.3, FreeBSD 6.4, OpenBSD 3.8, OSF/1 4.0, Solaris 2.6 declare
+
−   pthread_sigmask in <pthread.h>, not in <signal.h>.
+
−   But avoid namespace pollution on glibc systems.*/
+
−#if (@GNULIB_PTHREAD_SIGMASK@ || defined GNULIB_POSIXCHECK) \
+
−    && ((defined __APPLE__ && defined __MACH__) || defined __FreeBSD__ || defined __OpenBSD__ || defined __osf__ || defined __sun) \
+
−    && ! defined __GLIBC__
+
−# include <pthread.h>
+
−#endif
+
−
+
−/* 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@
+
−#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+
−#   undef pthread_sigmask
+
−#   define pthread_sigmask rpl_pthread_sigmask
+
−#  endif
+
−_GL_FUNCDECL_RPL (pthread_sigmask, int,
+
−                  (int how, const sigset_t *new_mask, sigset_t *old_mask));
+
−_GL_CXXALIAS_RPL (pthread_sigmask, int,
+
−                  (int how, const sigset_t *new_mask, sigset_t *old_mask));
+
−# else
+
−#  if !@HAVE_PTHREAD_SIGMASK@
+
−_GL_FUNCDECL_SYS (pthread_sigmask, int,
+
−                  (int how, const sigset_t *new_mask, sigset_t *old_mask));
+
−#  endif
+
−_GL_CXXALIAS_SYS (pthread_sigmask, int,
+
−                  (int how, const sigset_t *new_mask, sigset_t *old_mask));
+
−# endif
+
−_GL_CXXALIASWARN (pthread_sigmask);
+
−#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_RAISE@
+
−# if @REPLACE_RAISE@
+
−#  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
+
−#  if !@HAVE_RAISE@
+
−_GL_FUNCDECL_SYS (raise, int, (int sig));
+
−#  endif
+
−_GL_CXXALIAS_SYS (raise, int, (int sig));
+
−# endif
+
−_GL_CXXALIASWARN (raise);
+
−#elif defined GNULIB_POSIXCHECK
+
−# undef raise
+
−/* Assume raise is always declared.  */
+
−_GL_WARN_ON_USE (raise, "raise can crash on native Windows - "
+
−                 "use gnulib module raise for portability");
+
−#endif
+
−
+
−
+
−#if @GNULIB_SIGPROCMASK@
+
−# if !@HAVE_POSIX_SIGNALBLOCKING@
+
−
+
−#  ifndef GNULIB_defined_signal_blocking
+
−#   define GNULIB_defined_signal_blocking 1
+
−#  endif
+
−
+
−/* 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 Mac OS 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 Mac OS 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 Mac OS 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 Mac OS 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 Mac OS 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);
+
−
+
−# if !@HAVE_POSIX_SIGNALBLOCKING@ && GNULIB_defined_SIGPIPE
+
−/* Raise signal SIGPIPE.  */
+
−_GL_EXTERN_C int _gl_raise_SIGPIPE (void);
+
−# endif
+
−
+
−#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