Mercurial > hg > octave-lyh > gnulib-hg
changeset 12938:baf17c6b8bd7
signal: Avoid #define replacements in C++ mode.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Mon, 08 Mar 2010 01:18:40 +0100 |
parents | dbc0820f9ddc |
children | cfcc4a6e1c21 |
files | ChangeLog lib/signal.in.h modules/signal |
diffstat | 3 files changed, 91 insertions(+), 26 deletions(-) [+] |
line wrap: on
line diff
--- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,13 @@ 2010-03-07 Bruno Haible <bruno@clisp.org> + signal: Avoid #define replacements in C++ mode. + * lib/signal.in.h: Include c++defs.h. + (sigismember, sigemptyset, sigaddset, sigdelset, sigfillset, + sigpending, sigprocmask, signal, raise, sigaction): In C++, define a + namespaced alias symbol. + * modules/signal (Depends-on): Add c++defs. + (Makefile.am): Update signal.h rule. + search: Avoid #define replacements in C++ mode. * lib/search.in.h: Include c++defs.h. (_gl_search_compar_fn, _gl_search_action_fn): New types.
--- a/lib/signal.in.h +++ b/lib/signal.in.h @@ -35,6 +35,8 @@ #ifndef _GL_SIGNAL_H #define _GL_SIGNAL_H +/* 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. */ @@ -57,10 +59,6 @@ typedef unsigned int sigset_t; #endif -#ifdef __cplusplus -extern "C" { -#endif - #if @GNULIB_SIGNAL_H_SIGPIPE@ # ifndef SIGPIPE @@ -84,49 +82,105 @@ /* This code supports only 32 signals. */ typedef int verify_NSIG_constraint[2 * (NSIG <= 32) - 1]; +# endif + /* Test whether a given signal is contained in a signal set. */ -extern int sigismember (const sigset_t *set, int sig) _GL_ARG_NONNULL ((1)); +# if !@HAVE_POSIX_SIGNALBLOCKING@ +_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. */ -extern int sigemptyset (sigset_t *set) _GL_ARG_NONNULL ((1)); +# if !@HAVE_POSIX_SIGNALBLOCKING@ +_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. */ -extern int sigaddset (sigset_t *set, int sig) _GL_ARG_NONNULL ((1)); +# if !@HAVE_POSIX_SIGNALBLOCKING@ +_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. */ -extern int sigdelset (sigset_t *set, int sig) _GL_ARG_NONNULL ((1)); +# if !@HAVE_POSIX_SIGNALBLOCKING@ +_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. */ -extern int sigfillset (sigset_t *set) _GL_ARG_NONNULL ((1)); +# if !@HAVE_POSIX_SIGNALBLOCKING@ +_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. */ -extern int sigpending (sigset_t *set) _GL_ARG_NONNULL ((1)); +# 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; */ -extern int sigprocmask (int operation, const sigset_t *set, sigset_t *old_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); -# 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 +# ifdef __cplusplus +extern "C" { +# endif +typedef void (*_gl_function_taking_int_returning_void_t) (int); +# 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); /* Raise signal SIG. */ +# if !@HAVE_POSIX_SIGNALBLOCKING@ && GNULIB_defined_SIGPIPE +# if !(defined __cplusplus && defined GNULIB_NAMESPACE) # undef raise # define raise rpl_raise -extern int raise (int sig); +# endif +_GL_FUNCDECL_RPL (raise, int, (int sig)); +_GL_CXXALIAS_RPL (raise, int, (int sig)); +# else +_GL_CXXALIAS_SYS (raise, int, (int sig)); +# endif +_GL_CXXALIASWARN (raise); -# endif - -# endif /* !@HAVE_POSIX_SIGNALBLOCKING@ */ #elif defined GNULIB_POSIXCHECK # undef sigaddset # if HAVE_RAW_DECL_SIGADDSET @@ -218,14 +272,19 @@ # define SA_NODEFER 2 # define SA_RESTART 4 -extern int sigaction (int, const struct sigaction *restrict, - struct sigaction *restrict); +_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 @@ -240,10 +299,6 @@ #endif -#ifdef __cplusplus -} -#endif - #endif /* _GL_SIGNAL_H */ #endif /* _GL_SIGNAL_H */ #endif
--- a/modules/signal +++ b/modules/signal @@ -7,6 +7,7 @@ Depends-on: arg-nonnull +c++defs include_next warn-on-use @@ -18,7 +19,7 @@ # We need the following in order to create <signal.h> when the system # doesn't have a complete one. -signal.h: signal.in.h $(WARN_ON_USE_H) $(ARG_NONNULL_H) +signal.h: signal.in.h $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H) $(AM_V_GEN)rm -f $@-t $@ && \ { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \ sed -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \ @@ -33,6 +34,7 @@ -e 's|@''HAVE_SIGACTION''@|$(HAVE_SIGACTION)|g' \ -e 's|@''HAVE_STRUCT_SIGACTION_SA_SIGACTION''@|$(HAVE_STRUCT_SIGACTION_SA_SIGACTION)|g' \ -e 's|@''HAVE_TYPE_VOLATILE_SIG_ATOMIC_T''@|$(HAVE_TYPE_VOLATILE_SIG_ATOMIC_T)|g' \ + -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \ -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \ -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \ < $(srcdir)/signal.in.h; \