mirror of git://sourceware.org/git/glibc.git
Formerly ../signal/signal.h.~17~
This commit is contained in:
Roland McGrath
parent
17ec328f2d
commit
e53e8fb635
145
signal/signal.h
145
signal/signal.h
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@ -22,20 +22,20 @@ Cambridge, MA 02139, USA. */
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#ifndef _SIGNAL_H
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__BEGIN_DECLS
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#if !defined(__need_sig_atomic_t) && !defined(__need_sigset_t)
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#define _SIGNAL_H 1
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#include <features.h>
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__BEGIN_DECLS
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#endif
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#include <gnu/types.h>
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#include <gnu/signal.h>
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#define __need_size_t
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#include <stddef.h>
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#include <gnu/types.h>
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#include <sigset.h> /* __sigset_t, __sig_atomic_t. */
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#include <signum.h>
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#if !defined(__sig_atomic_t_defined) && \
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(defined(_SIGNAL_H) || defined(__need_sig_atomic_t))
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/* An integral type that can be modified atomically, without the
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@ -46,6 +46,9 @@ typedef __sig_atomic_t sig_atomic_t;
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#ifdef _SIGNAL_H
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/* Type of a signal handler. */
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typedef void (*__sighandler_t) __P ((int));
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/* Set the handler for the signal SIG to HANDLER,
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returning the old handler, or SIG_ERR on error. */
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extern __sighandler_t signal __P ((int __sig, __sighandler_t __handler));
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@ -56,9 +59,6 @@ extern __sighandler_t signal __P ((int __sig, __sighandler_t __handler));
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extern int __kill __P ((__pid_t __pid, int __sig));
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#ifdef __USE_POSIX
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extern int kill __P ((int __pid, int __sig));
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#ifdef __OPTIMIZE__
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#define kill(pid, sig) __kill((pid), (sig))
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#endif /* Optimizing. */
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#endif /* Use POSIX. */
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#ifdef __USE_BSD
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@ -75,12 +75,6 @@ extern int raise __P ((int __sig));
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/* SVID names for the same things. */
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extern __sighandler_t ssignal __P ((int __sig, __sighandler_t __handler));
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extern int gsignal __P ((int __sig));
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#ifdef __OPTIMIZE__
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#define gsignal(sig) raise(sig)
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#define ssignal(sig, handler) signal((sig), (handler))
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#endif /* Optimizing. */
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#endif /* Use SVID. */
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@ -100,10 +94,6 @@ extern int __sigpause __P ((int __mask));
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extern int sigblock __P ((int __mask));
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extern int sigsetmask __P ((int __mask));
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extern int sigpause __P ((int __mask));
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#define sigblock __sigblock
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#define sigsetmask __sigsetmask
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#define sigpause __sigpause
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#endif /* Use BSD. */
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@ -112,7 +102,7 @@ extern int sigpause __P ((int __mask));
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#endif
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#ifdef __USE_GNU
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#define sighandler_t __sighandler_t
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typedef __sighandler_t sighandler_t;
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#endif
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#endif /* <signal.h> included. */
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@ -122,7 +112,7 @@ extern int sigpause __P ((int __mask));
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#if !defined(__sigset_t_defined) && \
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(defined(_SIGNAL_H) || defined(__need_sigset_t))
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#define sigset_t __sigset_t
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typedef __sigset_t sigset_t;
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#define __sigset_t_defined 1
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#endif /* `sigset_t' not defined and <signal.h> or need `sigset_t'. */
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#undef __need_sigset_t
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@ -130,24 +120,34 @@ extern int sigpause __P ((int __mask));
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#ifdef _SIGNAL_H
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/* Clear all signals from SET. */
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extern int sigemptyset __P ((sigset_t * __set));
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extern int sigemptyset __P ((sigset_t *__set));
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/* Set all signals in SET. */
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extern int sigfillset __P ((sigset_t * __set));
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extern int sigfillset __P ((sigset_t *__set));
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/* Add SIGNO to SET. */
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extern int sigaddset __P ((sigset_t * __set, int __signo));
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extern int sigaddset __P ((sigset_t *__set, int __signo));
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/* Remove SIGNO from SET. */
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extern int sigdelset __P ((sigset_t * __set, int __signo));
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extern int sigdelset __P ((sigset_t *__set, int __signo));
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/* Return 1 if SIGNO is in SET, 0 if not. */
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extern int sigismember __P ((__const sigset_t * __set, int signo));
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extern int sigismember __P ((__const sigset_t *__set, int signo));
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#ifdef __OPTIMIZE__
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/* <sigset.h> defines the __ versions as macros that do the work. */
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#define sigemptyset(set) __sigemptyset(set)
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#define sigfillset(set) __sigfillset(set)
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#define sigaddset(set, signo) __sigaddset(set, signo)
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#define sigdelset(set, signo) __sigdelset(set, signo)
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#define sigismember(set, signo) __sigismember(set, signo)
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#endif
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/* Get and/or change the set of blocked signals. */
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extern int __sigprocmask __P ((int __how, __const sigset_t * __set,
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sigset_t * __oset));
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extern int sigprocmask __P ((int __how, sigset_t * __set, sigset_t * __oset));
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extern int __sigprocmask __P ((int __how,
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__const sigset_t *__set, sigset_t *__oset));
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extern int sigprocmask __P ((int __how,
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__const sigset_t *__set, sigset_t *__oset));
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/* Values for the HOW argument to `sigprocmask'. */
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#define SIG_BLOCK 1 /* Block signals. */
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@ -157,9 +157,13 @@ extern int sigprocmask __P ((int __how, sigset_t * __set, sigset_t * __oset));
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/* Change the set of blocked signals to SET,
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wait until a signal arrives, and restore the set of blocked signals. */
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extern int sigsuspend __P ((__const sigset_t * __set));
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extern int sigsuspend __P ((__const sigset_t *__set));
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/* Bits the in `sa_flags' field of a `struct sigaction'. */
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/* Get the system-specific definitions of
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`struct sigaction' and the `__SA_*' constants. */
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#include <sigaction.h>
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/* Bits in the `sa_flags' field of a `struct sigaction'. */
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#ifdef __USE_BSD
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#define SA_ONSTACK __SA_ONSTACK /* Take signal on signal stack. */
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#define SA_RESTART __SA_RESTART /* No syscall restart on sig ret. */
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@ -168,23 +172,13 @@ extern int sigsuspend __P ((__const sigset_t * __set));
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#define SA_NOCLDSTOP __SA_NOCLDSTOP /* No SIGCHLD when children stop. */
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/* Get and/or set the action for signal SIG. */
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extern int __sigaction __P ((int __sig, __const struct __sigaction * __act,
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struct __sigaction * __oact));
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extern int sigaction __P ((int __sig, __const struct __sigaction * __act,
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struct __sigaction * __oact));
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#define sigaction __sigaction
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extern int __sigaction __P ((int __sig, __const struct __sigaction *__act,
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struct __sigaction *__oact));
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extern int sigaction __P ((int __sig, __const struct __sigaction *__act,
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struct __sigaction *__oact));
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/* Put in SET all signals that are blocked and waiting to be delivered. */
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extern int sigpending __P ((sigset_t * __set));
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#define sigemptyset __sigemptyset
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#define sigfillset __sigfillset
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#define sigaddset __sigaddset
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#define sigdelset __sigdelset
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#define sigismember __sigismember
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#define sigprocmask __sigprocmask
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#define sigaction __sigaction
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extern int sigpending __P ((sigset_t *__set));
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#endif /* <signal.h> included. */
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@ -193,14 +187,14 @@ extern int sigpending __P ((sigset_t * __set));
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#if defined(_SIGNAL_H) && defined(__USE_BSD)
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/* Structure passed to `sigvec'. */
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struct __sigvec
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{
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__sighandler_t sv_handler; /* Signal handler. */
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int sv_mask; /* Mask of signals to be blocked. */
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struct sigvec
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{
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__sighandler_t sv_handler; /* Signal handler. */
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int sv_mask; /* Mask of signals to be blocked. */
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int sv_flags; /* Flags (see below). */
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#define sv_onstack sv_flags/* 4.2 BSD compatibility. */
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};
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int sv_flags; /* Flags (see below). */
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#define sv_onstack sv_flags /* 4.2 BSD compatibility. */
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};
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/* Bits in `sv_flags'. */
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#define SV_ONSTACK (1 << 0)/* Take the signal on the signal stack. */
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@ -213,11 +207,10 @@ struct __sigvec
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If the SV_RESETHAND bit is set in `sv_flags', the handler for SIG will be
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reset to SIG_DFL before `sv_handler' is entered. If OVEC is non-NULL,
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it is filled in with the old information for SIG. */
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extern int __sigvec __P ((int __sig, __const struct __sigvec * __vec,
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struct __sigvec * __ovec));
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extern int sigvec __P ((int __sig, __const struct __sigvec * __vec,
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struct __sigvec * __ovec));
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#define sigvec __sigvec
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extern int __sigvec __P ((int __sig, __const struct sigvec *__vec,
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struct sigvec *__ovec));
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extern int sigvec __P ((int __sig, __const struct sigvec *__vec,
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struct sigvec *__ovec));
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/* If INTERRUPT is nonzero, make signal SIG interrupt system calls
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@ -228,38 +221,36 @@ extern int siginterrupt __P ((int __sig, int __interrupt));
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/* Structure describing a signal stack. */
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struct sigstack
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{
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__ptr_t ss_sp; /* Signal stack pointer. */
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int ss_onstack; /* Nonzero if executing on this stack. */
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};
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{
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__ptr_t ss_sp; /* Signal stack pointer. */
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int ss_onstack; /* Nonzero if executing on this stack. */
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};
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/* Run signals handlers on the stack specified by SS (if not NULL).
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If OSS is not NULL, it is filled in with the old signal stack status. */
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extern int sigstack __P ((__const struct sigstack * __ss,
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struct sigstack * __oss));
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extern int sigstack __P ((__const struct sigstack *__ss,
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struct sigstack *__oss));
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/* Alternate interface. */
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struct sigaltstack
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{
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__ptr_t ss_sp;
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size_t ss_size;
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int ss_flags;
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};
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{
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__ptr_t ss_sp;
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size_t ss_size;
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int ss_flags;
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};
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extern int sigaltstack __P ((__const struct sigaltstack * __ss,
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struct sigaltstack * __oss));
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extern int sigaltstack __P ((__const struct sigaltstack *__ss,
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struct sigaltstack *__oss));
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/* Get machine-dependent `struct sigcontext' and signal subcodes. */
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#include <sigcontext.h>
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/* Restore the state saved in SCP. */
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extern int __sigreturn __P ((__const struct sigcontext * __scp));
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extern int sigreturn __P ((__const struct sigcontext * __scp));
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#define sigreturn __sigreturn
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__END_DECLS
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extern int __sigreturn __P ((__const struct sigcontext *__scp));
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extern int sigreturn __P ((__const struct sigcontext *__scp));
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#endif /* signal.h included and use BSD. */
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__END_DECLS
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#endif /* signal.h */
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