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/* A GNU-like <signal.h>.
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Copyright (C) 2006-2010 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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@PRAGMA_SYSTEM_HEADER@
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#if defined __need_sig_atomic_t || defined __need_sigset_t
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/* Special invocation convention inside glibc header files. */
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# @INCLUDE_NEXT@ @NEXT_SIGNAL_H@
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/* Normal invocation convention. */
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/* The include_next requires a split double-inclusion guard. */
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#@INCLUDE_NEXT@ @NEXT_SIGNAL_H@
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/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
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/* The definition of _GL_ARG_NONNULL is copied here. */
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/* The definition of _GL_WARN_ON_USE is copied here. */
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/* Define pid_t, uid_t.
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Also, mingw defines sigset_t not in <signal.h>, but in <sys/types.h>. */
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#include <sys/types.h>
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/* On AIX, sig_atomic_t already includes volatile. C99 requires that
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'volatile sig_atomic_t' ignore the extra modifier, but C89 did not.
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Hence, redefine this to a non-volatile type as needed. */
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#if ! @HAVE_TYPE_VOLATILE_SIG_ATOMIC_T@
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typedef int rpl_sig_atomic_t;
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# define sig_atomic_t rpl_sig_atomic_t
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/* A set or mask of signals. */
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typedef unsigned int sigset_t;
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#if @GNULIB_SIGNAL_H_SIGPIPE@
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/* Define SIGPIPE to a value that does not overlap with other signals. */
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# define GNULIB_defined_SIGPIPE 1
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/* To actually use SIGPIPE, you also need the gnulib modules 'sigprocmask',
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#if @GNULIB_SIGPROCMASK@
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# if !@HAVE_POSIX_SIGNALBLOCKING@
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/* Maximum signal number + 1. */
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/* This code supports only 32 signals. */
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typedef int verify_NSIG_constraint[2 * (NSIG <= 32) - 1];
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/* Test whether a given signal is contained in a signal set. */
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# if @HAVE_POSIX_SIGNALBLOCKING@
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/* This function is defined as a macro on MacOS X. */
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# if defined __cplusplus && defined GNULIB_NAMESPACE
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_GL_FUNCDECL_SYS (sigismember, int, (const sigset_t *set, int sig)
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_GL_ARG_NONNULL ((1)));
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_GL_CXXALIAS_SYS (sigismember, int, (const sigset_t *set, int sig));
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_GL_CXXALIASWARN (sigismember);
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/* Initialize a signal set to the empty set. */
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# if @HAVE_POSIX_SIGNALBLOCKING@
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/* This function is defined as a macro on MacOS X. */
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# if defined __cplusplus && defined GNULIB_NAMESPACE
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_GL_FUNCDECL_SYS (sigemptyset, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
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_GL_CXXALIAS_SYS (sigemptyset, int, (sigset_t *set));
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_GL_CXXALIASWARN (sigemptyset);
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/* Add a signal to a signal set. */
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# if @HAVE_POSIX_SIGNALBLOCKING@
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/* This function is defined as a macro on MacOS X. */
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# if defined __cplusplus && defined GNULIB_NAMESPACE
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_GL_FUNCDECL_SYS (sigaddset, int, (sigset_t *set, int sig)
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_GL_ARG_NONNULL ((1)));
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_GL_CXXALIAS_SYS (sigaddset, int, (sigset_t *set, int sig));
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_GL_CXXALIASWARN (sigaddset);
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/* Remove a signal from a signal set. */
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# if @HAVE_POSIX_SIGNALBLOCKING@
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/* This function is defined as a macro on MacOS X. */
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# if defined __cplusplus && defined GNULIB_NAMESPACE
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_GL_FUNCDECL_SYS (sigdelset, int, (sigset_t *set, int sig)
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_GL_ARG_NONNULL ((1)));
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_GL_CXXALIAS_SYS (sigdelset, int, (sigset_t *set, int sig));
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_GL_CXXALIASWARN (sigdelset);
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/* Fill a signal set with all possible signals. */
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# if @HAVE_POSIX_SIGNALBLOCKING@
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/* This function is defined as a macro on MacOS X. */
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# if defined __cplusplus && defined GNULIB_NAMESPACE
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_GL_FUNCDECL_SYS (sigfillset, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
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_GL_CXXALIAS_SYS (sigfillset, int, (sigset_t *set));
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_GL_CXXALIASWARN (sigfillset);
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/* Return the set of those blocked signals that are pending. */
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# if !@HAVE_POSIX_SIGNALBLOCKING@
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_GL_FUNCDECL_SYS (sigpending, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
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_GL_CXXALIAS_SYS (sigpending, int, (sigset_t *set));
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_GL_CXXALIASWARN (sigpending);
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/* If OLD_SET is not NULL, put the current set of blocked signals in *OLD_SET.
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Then, if SET is not NULL, affect the current set of blocked signals by
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combining it with *SET as indicated in OPERATION.
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In this implementation, you are not allowed to change a signal handler
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while the signal is blocked. */
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# if !@HAVE_POSIX_SIGNALBLOCKING@
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# define SIG_BLOCK 0 /* blocked_set = blocked_set | *set; */
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# define SIG_SETMASK 1 /* blocked_set = *set; */
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# define SIG_UNBLOCK 2 /* blocked_set = blocked_set & ~*set; */
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_GL_FUNCDECL_SYS (sigprocmask, int,
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(int operation, const sigset_t *set, sigset_t *old_set));
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_GL_CXXALIAS_SYS (sigprocmask, int,
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(int operation, const sigset_t *set, sigset_t *old_set));
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_GL_CXXALIASWARN (sigprocmask);
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/* Install the handler FUNC for signal SIG, and return the previous
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typedef void (*_gl_function_taking_int_returning_void_t) (int);
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# if !@HAVE_POSIX_SIGNALBLOCKING@
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# define signal rpl_signal
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_GL_FUNCDECL_RPL (signal, _gl_function_taking_int_returning_void_t,
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(int sig, _gl_function_taking_int_returning_void_t func));
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_GL_CXXALIAS_RPL (signal, _gl_function_taking_int_returning_void_t,
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(int sig, _gl_function_taking_int_returning_void_t func));
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_GL_CXXALIAS_SYS (signal, _gl_function_taking_int_returning_void_t,
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(int sig, _gl_function_taking_int_returning_void_t func));
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_GL_CXXALIASWARN (signal);
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/* Raise signal SIG. */
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# if !@HAVE_POSIX_SIGNALBLOCKING@ && GNULIB_defined_SIGPIPE
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# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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# define raise rpl_raise
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_GL_FUNCDECL_RPL (raise, int, (int sig));
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_GL_CXXALIAS_RPL (raise, int, (int sig));
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_GL_CXXALIAS_SYS (raise, int, (int sig));
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_GL_CXXALIASWARN (raise);
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#elif defined GNULIB_POSIXCHECK
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# if HAVE_RAW_DECL_SIGADDSET
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_GL_WARN_ON_USE (sigaddset, "sigaddset is unportable - "
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"use the gnulib module sigprocmask for portability");
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# if HAVE_RAW_DECL_SIGDELSET
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_GL_WARN_ON_USE (sigdelset, "sigdelset is unportable - "
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"use the gnulib module sigprocmask for portability");
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# if HAVE_RAW_DECL_SIGEMPTYSET
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_GL_WARN_ON_USE (sigemptyset, "sigemptyset is unportable - "
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"use the gnulib module sigprocmask for portability");
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# if HAVE_RAW_DECL_SIGFILLSET
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_GL_WARN_ON_USE (sigfillset, "sigfillset is unportable - "
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"use the gnulib module sigprocmask for portability");
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# if HAVE_RAW_DECL_SIGISMEMBER
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_GL_WARN_ON_USE (sigismember, "sigismember is unportable - "
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"use the gnulib module sigprocmask for portability");
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# if HAVE_RAW_DECL_SIGPENDING
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_GL_WARN_ON_USE (sigpending, "sigpending is unportable - "
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"use the gnulib module sigprocmask for portability");
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# if HAVE_RAW_DECL_SIGPROCMASK
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_GL_WARN_ON_USE (sigprocmask, "sigprocmask is unportable - "
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"use the gnulib module sigprocmask for portability");
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#endif /* @GNULIB_SIGPROCMASK@ */
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#if @GNULIB_SIGACTION@
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# if !@HAVE_SIGACTION@
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# if !@HAVE_SIGINFO_T@
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/* Present to allow compilation, but unsupported by gnulib. */
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/* Present to allow compilation, but unsupported by gnulib. */
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union sigval si_value;
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typedef struct siginfo_t siginfo_t;
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# endif /* !@HAVE_SIGINFO_T@ */
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/* We assume that platforms which lack the sigaction() function also lack
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the 'struct sigaction' type, and vice versa. */
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void (*_sa_handler) (int);
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/* Present to allow compilation, but unsupported by gnulib. POSIX
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says that implementations may, but not must, make sa_sigaction
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overlap with sa_handler, but we know of no implementation where
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they do not overlap. */
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void (*_sa_sigaction) (int, siginfo_t *, void *);
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/* Not all POSIX flags are supported. */
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# define sa_handler _sa_func._sa_handler
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# define sa_sigaction _sa_func._sa_sigaction
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/* Unsupported flags are not present. */
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# define SA_RESETHAND 1
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# define SA_NODEFER 2
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# define SA_RESTART 4
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_GL_FUNCDECL_SYS (sigaction, int, (int, const struct sigaction *restrict,
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struct sigaction *restrict));
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# elif !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@
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# define sa_sigaction sa_handler
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# endif /* !@HAVE_SIGACTION@, !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@ */
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_GL_CXXALIAS_SYS (sigaction, int, (int, const struct sigaction *restrict,
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struct sigaction *restrict));
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_GL_CXXALIASWARN (sigaction);
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#elif defined GNULIB_POSIXCHECK
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# if HAVE_RAW_DECL_SIGACTION
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_GL_WARN_ON_USE (sigaction, "sigaction is unportable - "
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"use the gnulib module sigaction for portability");
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/* Some systems don't have SA_NODEFER. */
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# define SA_NODEFER 0
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#endif /* _GL_SIGNAL_H */
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#endif /* _GL_SIGNAL_H */
added
removed
gettext-runtime/gnulib-lib/signal.in.h
