Commit cf74a395 authored by Paul Eggert's avatar Paul Eggert

pthread_sigmask: new module

* MODULES.html.sh (Support for systems lacking POSIX:2008): Add it.
* doc/posix-functions/pthread_sigmask.texi: Document new module.
* lib/signal.in.h (pthread_sigmask): Arrange for replacement.
This is done only as a macro; I don't know how well that'll
work for C++.  Move <sys/types.h> include before the include_next,
to avoid mishap on Solaris.
* m4/signal_h.m4 (gl_SIGNAL_H, gl_SIGNAL_H_DEFAULTS): Check for it.
* modules/signal (Makefile.am): Substitute the check's results.
* modules/pthread_sigmask, m4/pthread_sigmask.m4: New files.
parent 623de735
2011-07-05 Paul Eggert <eggert@cs.ucla.edu>
pthread_sigmask: new module
* MODULES.html.sh (Support for systems lacking POSIX:2008): Add it.
* doc/posix-functions/pthread_sigmask.texi: Document new module.
* lib/signal.in.h (pthread_sigmask): Arrange for replacement.
This is done only as a macro; I don't know how well that'll
work for C++. Move <sys/types.h> include before the include_next,
to avoid mishap on Solaris.
* m4/signal_h.m4 (gl_SIGNAL_H, gl_SIGNAL_H_DEFAULTS): Check for it.
* modules/signal (Makefile.am): Substitute the check's results.
* modules/pthread_sigmask, m4/pthread_sigmask.m4: New files.
test-pselect: new module
* modules/pselect-tests, tests/test-pselect.c: New files.
* tests/test-select.c, tests/test-sys_select-c++.cc:
......@@ -2451,6 +2451,7 @@ func_all_modules ()
func_module times
func_module timespec
func_module nanosleep
func_module pthread_sigmask
func_module regex
func_module rename
func_module renameat
......
......@@ -8,11 +8,14 @@ Gnulib module: ---
Portability problems fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
Solaris 2.4, mingw, BeOS.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
Solaris 2.4, mingw, BeOS.
On platforms that do not natively support this function,
it has unspecified behavior in a multi-threaded process.
@end itemize
......@@ -30,6 +30,12 @@
#ifndef _@GUARD_PREFIX@_SIGNAL_H
/* Define pid_t, uid_t.
Also, mingw defines sigset_t not in <signal.h>, but in <sys/types.h>.
On Solaris 10, <signal.h> includes <sys/types.h>, which eventually includes
us; so include <sys/types.h> now, before the second inclusion guard. */
#include <sys/types.h>
/* The include_next requires a split double-inclusion guard. */
#@INCLUDE_NEXT@ @NEXT_SIGNAL_H@
......@@ -42,10 +48,6 @@
/* The definition of _GL_WARN_ON_USE is copied here. */
/* Define pid_t, uid_t.
Also, mingw defines sigset_t not in <signal.h>, but in <sys/types.h>. */
#include <sys/types.h>
/* 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. */
......@@ -100,6 +102,20 @@ typedef void (*sighandler_t) (int);
#endif
#if @GNULIB_PTHREAD_SIGMASK@
# if @REPLACE_PTHREAD_SIGMASK@
# undef pthread_sigmask
# define pthread_sigmask sigprocmask
# endif
#elif defined GNULIB_POSIXCHECK
# undef pthread_sigmask
# if HAVE_RAW_DECL_PTHREAD_SIGMASK
_GL_WARN_ON_USE (pthread_sigmask, "pthread_sigmask is not portable - "
"use gnulib module pthread_sigmask for portability");
# endif
#endif
#if @GNULIB_SIGPROCMASK@
# if !@HAVE_POSIX_SIGNALBLOCKING@
......
# pthread_sigmask.m4 serial 1
dnl Copyright (C) 2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
AC_DEFUN([gl_PTHREAD_SIGMASK],
[
m4_ifdef([gl_THREADLIB], [
AC_REQUIRE([gl_THREADLIB])
if test "$gl_threads_api" = posix; then
gl_save_LIBS="$LIBS"
LIBS="$LIBS $LIBMULTITHREAD"
AC_CHECK_FUNCS([pthread_sigmask])
LIBS="$gl_save_LIBS"
fi
], [
AC_CHECK_FUNCS_ONCE([pthread_sigmask])
])
if test $ac_cv_func_pthread_sigmask = no; then
REPLACE_PTHREAD_SIGMASK=0
fi
])
# signal_h.m4 serial 12
# signal_h.m4 serial 13
dnl Copyright (C) 2007-2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
......@@ -27,7 +27,8 @@ AC_DEFUN([gl_SIGNAL_H],
dnl Check for declarations of anything we want to poison if the
dnl corresponding gnulib module is not in use.
gl_WARN_ON_USE_PREPARE([[#include <signal.h>
]], [sigaction sigaddset sigdelset sigemptyset sigfillset sigismember
]], [pthread_sigmask sigaction
sigaddset sigdelset sigemptyset sigfillset sigismember
sigpending sigprocmask])
])
......@@ -42,6 +43,7 @@ AC_DEFUN([gl_SIGNAL_MODULE_INDICATOR],
AC_DEFUN([gl_SIGNAL_H_DEFAULTS],
[
GNULIB_PTHREAD_SIGMASK=0; AC_SUBST([GNULIB_PTHREAD_SIGMASK])
GNULIB_SIGNAL_H_SIGPIPE=0; AC_SUBST([GNULIB_SIGNAL_H_SIGPIPE])
GNULIB_SIGPROCMASK=0; AC_SUBST([GNULIB_SIGPROCMASK])
GNULIB_SIGACTION=0; AC_SUBST([GNULIB_SIGACTION])
......@@ -55,4 +57,5 @@ AC_DEFUN([gl_SIGNAL_H_DEFAULTS],
HAVE_TYPE_VOLATILE_SIG_ATOMIC_T=1;
AC_SUBST([HAVE_TYPE_VOLATILE_SIG_ATOMIC_T])
HAVE_SIGHANDLER_T=1; AC_SUBST([HAVE_SIGHANDLER_T])
REPLACE_PTHREAD_SIGMASK=0; AC_SUBST([REPLACE_PTHREAD_SIGMASK])
])
Description:
POSIX compatible signal blocking for threads.
Files:
m4/pthread_sigmask.m4
Depends-on:
signal
sigprocmask [test $REPLACE_PTHREAD_SIGMASK = 1]
configure.ac:
gl_PTHREAD_SIGMASK
gl_SYS_SELECT_MODULE_INDICATOR([pthread_sigmask])
Makefile.am:
Include:
<signal.h>
Link:
$(LIBMULTITHREAD)
License:
LGPLv2+
Maintainer:
Paul Eggert, Bruno Haible, Jim Meyering
......@@ -28,6 +28,7 @@ signal.h: signal.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H
-e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
-e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
-e 's|@''NEXT_SIGNAL_H''@|$(NEXT_SIGNAL_H)|g' \
-e 's|@''GNULIB_PTHREAD_SIGMASK''@|$(GNULIB_PTHREAD_SIGMASK)|g' \
-e 's/@''GNULIB_SIGNAL_H_SIGPIPE''@/$(GNULIB_SIGNAL_H_SIGPIPE)/g' \
-e 's/@''GNULIB_SIGPROCMASK''@/$(GNULIB_SIGPROCMASK)/g' \
-e 's/@''GNULIB_SIGACTION''@/$(GNULIB_SIGACTION)/g' \
......@@ -38,6 +39,7 @@ signal.h: signal.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H
-e 's|@''HAVE_STRUCT_SIGACTION_SA_SIGACTION''@|$(HAVE_STRUCT_SIGACTION_SA_SIGACTION)|g' \
-e 's|@''HAVE_TYPE_VOLATILE_SIG_ATOMIC_T''@|$(HAVE_TYPE_VOLATILE_SIG_ATOMIC_T)|g' \
-e 's|@''HAVE_SIGHANDLER_T''@|$(HAVE_SIGHANDLER_T)|g' \
-e 's|@''REPLACE_PTHREAD_SIGMASK''@|$(REPLACE_PTHREAD_SIGMASK)|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)' \
......
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