diff options
Diffstat (limited to 'gnulib-m4/pthread_sigmask.m4')
| -rw-r--r-- | gnulib-m4/pthread_sigmask.m4 | 77 |
1 files changed, 4 insertions, 73 deletions
diff --git a/gnulib-m4/pthread_sigmask.m4 b/gnulib-m4/pthread_sigmask.m4 index 437869f6..77991d4f 100644 --- a/gnulib-m4/pthread_sigmask.m4 +++ b/gnulib-m4/pthread_sigmask.m4 @@ -1,9 +1,10 @@ # pthread_sigmask.m4 -# serial 23 -dnl Copyright (C) 2011-2024 Free Software Foundation, Inc. +# serial 24 +dnl Copyright (C) 2011-2025 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. +dnl This file is offered as-is, without any warranty. AC_DEFUN([gl_FUNC_PTHREAD_SIGMASK], [ @@ -96,7 +97,7 @@ AC_DEFUN([gl_FUNC_PTHREAD_SIGMASK], HAVE_PTHREAD_SIGMASK=0 dnl Define the symbol rpl_pthread_sigmask, not pthread_sigmask, dnl so as to not accidentally override the system's pthread_sigmask - dnl symbol from libpthread. This is necessary on IRIX 6.5. + dnl symbol from libpthread. REPLACE_PTHREAD_SIGMASK=1 fi ]) @@ -198,76 +199,6 @@ int main () [Define to 1 if pthread_sigmask(), when it fails, returns -1 and sets errno.]) ;; esac - - dnl On IRIX 6.5, in a single-threaded program, pending signals are not - dnl immediately delivered when they are unblocked through pthread_sigmask, - dnl only a little while later. - AC_CACHE_CHECK([whether pthread_sigmask unblocks signals correctly], - [gl_cv_func_pthread_sigmask_unblock_works], - [ - case "$host_os" in - irix*) - gl_cv_func_pthread_sigmask_unblock_works="guessing no";; - *) - gl_cv_func_pthread_sigmask_unblock_works="guessing yes";; - esac - m4_ifdef([gl_][THREADLIB], - [dnl Link against $LIBMULTITHREAD, not only $PTHREAD_SIGMASK_LIB. - dnl Otherwise we get a false positive on those platforms where - dnl $gl_cv_func_pthread_sigmask_in_libc_works is "no". - gl_saved_LIBS=$LIBS - LIBS="$LIBS $LIBMULTITHREAD"]) - AC_RUN_IFELSE( - [AC_LANG_SOURCE([[ -#include <limits.h> -#include <pthread.h> -#include <signal.h> -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -]GL_MDA_DEFINES[ -static volatile int sigint_occurred; -static void -sigint_handler (int sig) -{ - sigint_occurred++; -} -int main () -{ - sigset_t set; - pid_t pid = getpid (); - char command[80]; - if (LONG_MAX < pid) - return 6; - signal (SIGINT, sigint_handler); - sigemptyset (&set); - sigaddset (&set, SIGINT); - if (!(pthread_sigmask (SIG_BLOCK, &set, NULL) == 0)) - return 1; - sprintf (command, "sh -c 'sleep 1; kill -INT %ld' &", (long) pid); - if (!(system (command) == 0)) - return 2; - sleep (2); - if (!(sigint_occurred == 0)) - return 3; - if (!(pthread_sigmask (SIG_UNBLOCK, &set, NULL) == 0)) - return 4; - if (!(sigint_occurred == 1)) /* This fails on IRIX. */ - return 5; - return 0; -}]])], - [:], - [gl_cv_func_pthread_sigmask_unblock_works=no], - [:]) - m4_ifdef([gl_][THREADLIB], [LIBS=$gl_saved_LIBS]) - ]) - case "$gl_cv_func_pthread_sigmask_unblock_works" in - *no) - REPLACE_PTHREAD_SIGMASK=1 - AC_DEFINE([PTHREAD_SIGMASK_UNBLOCK_BUG], [1], - [Define to 1 if pthread_sigmask() unblocks signals incorrectly.]) - ;; - esac fi ]) |