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authorUlrich Drepper <drepper@redhat.com>1998-09-12 21:33:22 +0000
committerUlrich Drepper <drepper@redhat.com>1998-09-12 21:33:22 +0000
commitb39c6f8b7a847270f8b0a0c9f101535cce29d00e (patch)
tree32774357959d3cd9b0f93708f9c2b7598c80885e /signal
parentc06cc21c043b02d0d7c078730695be370c66571c (diff)
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Update.
1998-09-12 Mark Kettenis <kettenis@phys.uva.nl> * sysdeps/generic/segfault.c (install_handler): Install signal handler with SA_ONSTACK instead of setting the stack flags to SS_ONSTACK. Do not install handler for SIGSTKFLT if it is not defined. 1998-09-12 14:24 -0400 Zack Weinberg <zack@rabi.phys.columbia.edu> * signal/signal.h: Fix multiple inclusion guard to cover the entire file. * wcsmbs/wchar.h: Remove prototype of internal function __mbsrtowcs. * sysdeps/i386/i486/bits/string.h (memchr): Don't do arithmetic on `void *'.
Diffstat (limited to 'signal')
-rw-r--r--signal/signal.h73
1 files changed, 34 insertions, 39 deletions
diff --git a/signal/signal.h b/signal/signal.h
index 93058973a9..62ccf19699 100644
--- a/signal/signal.h
+++ b/signal/signal.h
@@ -23,33 +23,44 @@
#ifndef _SIGNAL_H
#if !defined __need_sig_atomic_t && !defined __need_sigset_t
-# define _SIGNAL_H 1
-# include <features.h>
+# define _SIGNAL_H
#endif
+#include <features.h>
+
__BEGIN_DECLS
-#include <bits/types.h>
#include <bits/sigset.h> /* __sigset_t, __sig_atomic_t. */
-#if defined _SIGNAL_H && defined __USE_XOPEN && !defined pid_t
-typedef __pid_t pid_t;
-# define pid_t pid_t
-#endif /* Unix98 */
-
-#if !defined __sig_atomic_t_defined \
- && (defined _SIGNAL_H || defined __need_sig_atomic_t)
/* An integral type that can be modified atomically, without the
possibility of a signal arriving in the middle of the operation. */
+#ifndef __sig_atomic_t_defined
+# if defined __need_sig_atomic_t || defined _SIGNAL_H
+# undef __need_sig_atomic_t
+# define __sig_atomic_t_defined 1
typedef __sig_atomic_t sig_atomic_t;
-# define __sig_atomic_t_defined
-#endif /* `sig_atomic_t' undefined and <signal.h> or need `sig_atomic_t'. */
-#undef __need_sig_atomic_t
+# endif
+#endif
+
+#ifndef __sigset_t_defined
+# if defined __need_sigset_t || (defined _SIGNAL_H && defined __USE_POSIX)
+# undef __need_sigset_t
+# define __sigset_t_defined 1
+typedef __sigset_t sigset_t;
+# endif
+#endif
#ifdef _SIGNAL_H
+#include <bits/types.h>
#include <bits/signum.h>
+#if defined __USE_XOPEN && !defined pid_t
+typedef __pid_t pid_t;
+# define pid_t pid_t
+#endif /* Unix98 */
+
+
/* Type of a signal handler. */
typedef void (*__sighandler_t) __PMT ((int));
@@ -120,7 +131,7 @@ extern void psignal __P ((int __sig, __const char *__s));
selects the X/Open version. */
extern int __sigpause __P ((int __sig_or_mask, int __is_sig));
-#if defined __USE_BSD || defined __USE_GNU
+#ifdef __USE_BSD
/* Set the mask of blocked signals to MASK,
wait for a signal to arrive, and then restore the mask. */
extern int sigpause __P ((int __mask));
@@ -166,20 +177,8 @@ typedef __sighandler_t sighandler_t;
typedef __sighandler_t sig_t;
#endif
-#endif /* <signal.h> included. */
-
-
-#if !defined __sigset_t_defined \
- && ((defined _SIGNAL_H && defined __USE_POSIX) || defined __need_sigset_t)
-typedef __sigset_t sigset_t;
-# define __sigset_t_defined 1
-#endif /* `sigset_t' not defined and <signal.h> or need `sigset_t'. */
-#undef __need_sigset_t
-
#ifdef __USE_POSIX
-# ifdef _SIGNAL_H
-
/* We need `struct timespec' later on. */
# define __need_timespec
# include <time.h>
@@ -253,11 +252,9 @@ extern int sigtimedwait __P ((__const sigset_t *__set, siginfo_t *__info,
extern int sigqueue __P ((__pid_t __pid, int __sig,
__const union sigval __val));
-# endif /* <signal.h> included. */
-
#endif /* Use POSIX. */
-#if defined _SIGNAL_H && defined __USE_BSD
+#ifdef __USE_BSD
/* Names of the signals. This variable exists only for compatibility.
Use `strsignal' instead (see <string.h>). */
@@ -295,13 +292,10 @@ extern int sigvec __P ((int __sig, __const struct sigvec *__vec,
/* Restore the state saved in SCP. */
extern int sigreturn __P ((struct sigcontext *__scp));
-#endif /* signal.h included and use BSD. */
-
+#endif /* use BSD. */
-#if defined _SIGNAL_H && (defined __USE_BSD || defined __USE_XOPEN_EXTENDED)
-# define __need_size_t
-# include <stddef.h>
+#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
/* If INTERRUPT is nonzero, make signal SIG interrupt system calls
(causing them to fail with EINTR); if INTERRUPT is zero, make system
@@ -321,10 +315,9 @@ extern int sigstack __P ((__const struct sigstack *__ss,
extern int sigaltstack __P ((__const struct sigaltstack *__ss,
struct sigaltstack *__oss));
-#endif /* signal.h included and use BSD or X/Open Unix. */
-
+#endif /* use BSD or X/Open Unix. */
-#if defined _SIGNAL_H && defined __USE_UNIX98
+#ifdef __USE_UNIX98
/* Simplified interface for signal management. */
/* Add SIG to the calling process' signal mask. */
@@ -338,7 +331,7 @@ extern int sigignore __P ((int __sig));
/* Set the disposition of SIG. */
extern __sighandler_t sigset __P ((int __sig, __sighandler_t __disp));
-#endif
+#endif /* use Unix98 */
#ifdef __USE_POSIX
/* Some of the functions for handling signals in threaded programs must
@@ -357,6 +350,8 @@ extern int __libc_current_sigrtmax __P ((void));
/* Allocate real-time signal with highest/lowest available priority. */
extern int __libc_allocate_rtsig __P ((int __high));
+#endif /* signal.h */
+
__END_DECLS
-#endif /* signal.h */
+#endif /* not signal.h */