X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fsignal.in.h;h=ebfba747ebc00a2ed6d053ff18e45c79b3bcea79;hb=969fe755730d23ba7ff21ae7511f66067d0a94d8;hp=62e2b778d18e47a35388e7d1c333f9496f4e30a1;hpb=3c08dcc35ce66a98261584beea4c5006fa28ca9b;p=gnulib.git diff --git a/lib/signal.in.h b/lib/signal.in.h index 62e2b778d..ebfba747e 100644 --- a/lib/signal.in.h +++ b/lib/signal.in.h @@ -1,6 +1,6 @@ /* A GNU-like . - Copyright (C) 2006-2008 Free Software Foundation, Inc. + Copyright (C) 2006-2010 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 @@ -37,10 +37,26 @@ /* The definition of GL_LINK_WARNING is copied here. */ +/* The definition of _GL_ARG_NONNULL is copied here. */ + /* Define pid_t, uid_t. Also, mingw defines sigset_t not in , but in . */ #include +/* 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@ +typedef int rpl_sig_atomic_t; +# undef sig_atomic_t +# define sig_atomic_t rpl_sig_atomic_t +#endif + +/* A set or mask of signals. */ +#if !@HAVE_SIGSET_T@ +typedef unsigned int sigset_t; +#endif + #ifdef __cplusplus extern "C" { #endif @@ -57,69 +73,103 @@ extern "C" { #endif -#if !@HAVE_POSIX_SIGNALBLOCKING@ +#if @GNULIB_SIGPROCMASK@ +# if !@HAVE_POSIX_SIGNALBLOCKING@ /* Maximum signal number + 1. */ -# ifndef NSIG -# define NSIG 32 -# endif +# ifndef NSIG +# define NSIG 32 +# endif /* This code supports only 32 signals. */ typedef int verify_NSIG_constraint[2 * (NSIG <= 32) - 1]; -/* A set or mask of signals. */ -# if !@HAVE_SIGSET_T@ -typedef unsigned int sigset_t; -# endif - /* Test whether a given signal is contained in a signal set. */ -extern int sigismember (const sigset_t *set, int sig); +extern int sigismember (const sigset_t *set, int sig) _GL_ARG_NONNULL ((1)); /* Initialize a signal set to the empty set. */ -extern int sigemptyset (sigset_t *set); +extern int sigemptyset (sigset_t *set) _GL_ARG_NONNULL ((1)); /* Add a signal to a signal set. */ -extern int sigaddset (sigset_t *set, int sig); +extern int sigaddset (sigset_t *set, int sig) _GL_ARG_NONNULL ((1)); /* Remove a signal from a signal set. */ -extern int sigdelset (sigset_t *set, int sig); +extern int sigdelset (sigset_t *set, int sig) _GL_ARG_NONNULL ((1)); /* Fill a signal set with all possible signals. */ -extern int sigfillset (sigset_t *set); +extern int sigfillset (sigset_t *set) _GL_ARG_NONNULL ((1)); /* Return the set of those blocked signals that are pending. */ -extern int sigpending (sigset_t *set); +extern int sigpending (sigset_t *set) _GL_ARG_NONNULL ((1)); /* 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. */ -# 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; */ +# 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; */ extern int sigprocmask (int operation, const sigset_t *set, sigset_t *old_set); -# define signal rpl_signal +# define signal rpl_signal /* Install the handler FUNC for signal SIG, and return the previous handler. */ extern void (*signal (int sig, void (*func) (int))) (int); -# if GNULIB_defined_SIGPIPE +# if GNULIB_defined_SIGPIPE /* Raise signal SIG. */ -# undef raise -# define raise rpl_raise +# undef raise +# define raise rpl_raise extern int raise (int sig); -# endif - -#endif /* !@HAVE_POSIX_SIGNALBLOCKING@ */ - - -#if !@HAVE_SIGACTION@ - -# if !@HAVE_SIGINFO_T@ +# endif + +# endif /* !@HAVE_POSIX_SIGNALBLOCKING@ */ +#elif defined GNULIB_POSIXCHECK +# undef sigaddset +# define sigaddset(s,n) \ + (GL_LINK_WARNING ("sigaddset is unportable - " \ + "use gnulib module sigprocmask for portability"), \ + sigaddset (s, n)) +# undef sigdelset +# define sigdelset(s,n) \ + (GL_LINK_WARNING ("sigdelset is unportable - " \ + "use gnulib module sigprocmask for portability"), \ + sigdelset (s, n)) +# undef sigemptyset +# define sigemptyset(s) \ + (GL_LINK_WARNING ("sigemptyset is unportable - " \ + "use gnulib module sigprocmask for portability"), \ + sigemptyset (s)) +# undef sigfillset +# define sigfillset(s) \ + (GL_LINK_WARNING ("sigfillset is unportable - " \ + "use gnulib module sigprocmask for portability"), \ + sigfillset (s)) +# undef sigismember +# define sigismember(s,n) \ + (GL_LINK_WARNING ("sigismember is unportable - " \ + "use gnulib module sigprocmask for portability"), \ + sigismember (s, n)) +# undef sigpending +# define sigpending(s) \ + (GL_LINK_WARNING ("sigpending is unportable - " \ + "use gnulib module sigprocmask for portability"), \ + sigpending (s)) +# undef sigprocmask +# define sigprocmask(h,s,o) \ + (GL_LINK_WARNING ("sigprocmask is unportable - " \ + "use gnulib module sigprocmask for portability"), \ + sigprocmask (h, s, o)) +#endif /* @GNULIB_SIGPROCMASK@ */ + + +#if @GNULIB_SIGACTION@ +# if !@HAVE_SIGACTION@ + +# if !@HAVE_SIGINFO_T@ /* Present to allow compilation, but unsupported by gnulib. */ union sigval { @@ -141,7 +191,7 @@ struct siginfo_t union sigval si_value; }; typedef struct siginfo_t siginfo_t; -# endif /* !@HAVE_SIGINFO_T@ */ +# endif /* !@HAVE_SIGINFO_T@ */ /* We assume that platforms which lack the sigaction() function also lack the 'struct sigaction' type, and vice versa. */ @@ -161,21 +211,33 @@ struct sigaction /* Not all POSIX flags are supported. */ int sa_flags; }; -# define sa_handler _sa_func._sa_handler -# define sa_sigaction _sa_func._sa_sigaction +# 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 SA_RESETHAND 1 +# define SA_NODEFER 2 +# define SA_RESTART 4 extern int sigaction (int, const struct sigaction *restrict, struct sigaction *restrict); -#elif !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@ +# elif !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@ -# define sa_sigaction sa_handler +# define sa_sigaction sa_handler -#endif /* !@HAVE_SIGACTION@, !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@ */ +# endif /* !@HAVE_SIGACTION@, !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@ */ +#elif defined GNULIB_POSIXCHECK +# undef sigaction +# define sigaction(s,a,o) \ + (GL_LINK_WARNING ("sigaction is unportable - " \ + "use gnulib module sigaction for portability"), \ + sigaction (s, a, o)) +#endif + +/* Some systems don't have SA_NODEFER. */ +#ifndef SA_NODEFER +# define SA_NODEFER 0 +#endif #ifdef __cplusplus