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# pthread-mutex.m4
# serial 4
dnl Copyright (C) 2019-2024 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_MUTEX],
[
AC_REQUIRE([gl_PTHREAD_H])
AC_REQUIRE([AC_CANONICAL_HOST])
if { case "$host_os" in mingw* | windows*) true;; *) false;; esac; } \
&& test $gl_threads_api = windows; then
dnl Choose function names that don't conflict with the mingw-w64 winpthreads
dnl library.
REPLACE_PTHREAD_MUTEX_INIT=1
REPLACE_PTHREAD_MUTEXATTR_INIT=1
REPLACE_PTHREAD_MUTEXATTR_GETTYPE=1
REPLACE_PTHREAD_MUTEXATTR_SETTYPE=1
REPLACE_PTHREAD_MUTEXATTR_GETROBUST=1
REPLACE_PTHREAD_MUTEXATTR_SETROBUST=1
REPLACE_PTHREAD_MUTEXATTR_DESTROY=1
REPLACE_PTHREAD_MUTEX_LOCK=1
REPLACE_PTHREAD_MUTEX_TRYLOCK=1
REPLACE_PTHREAD_MUTEX_TIMEDLOCK=1
REPLACE_PTHREAD_MUTEX_UNLOCK=1
REPLACE_PTHREAD_MUTEX_DESTROY=1
else
if test $HAVE_PTHREAD_H = 0; then
HAVE_PTHREAD_MUTEX_INIT=0
HAVE_PTHREAD_MUTEXATTR_INIT=0
HAVE_PTHREAD_MUTEXATTR_GETTYPE=0
HAVE_PTHREAD_MUTEXATTR_SETTYPE=0
HAVE_PTHREAD_MUTEXATTR_GETROBUST=0
HAVE_PTHREAD_MUTEXATTR_SETROBUST=0
HAVE_PTHREAD_MUTEXATTR_DESTROY=0
HAVE_PTHREAD_MUTEX_LOCK=0
HAVE_PTHREAD_MUTEX_TRYLOCK=0
dnl HAVE_PTHREAD_MUTEX_TIMEDLOCK is set in pthread_mutex_timedlock.m4.
HAVE_PTHREAD_MUTEX_UNLOCK=0
HAVE_PTHREAD_MUTEX_DESTROY=0
else
AC_CACHE_CHECK([for pthread_mutexattr_getrobust],
[gl_cv_func_pthread_mutexattr_getrobust],
[saved_LIBS="$LIBS"
LIBS="$LIBS $LIBPMULTITHREAD"
AC_LINK_IFELSE(
[AC_LANG_SOURCE(
[[extern
#ifdef __cplusplus
"C"
#endif
int pthread_mutexattr_getrobust (void);
int main ()
{
return pthread_mutexattr_getrobust ();
}
]])],
[gl_cv_func_pthread_mutexattr_getrobust=yes],
[gl_cv_func_pthread_mutexattr_getrobust=no])
LIBS="$saved_LIBS"
])
if test $gl_cv_func_pthread_mutexattr_getrobust = no; then
HAVE_PTHREAD_MUTEXATTR_GETROBUST=0
HAVE_PTHREAD_MUTEXATTR_SETROBUST=0
AC_DEFINE([PTHREAD_MUTEXATTR_ROBUST_UNIMPLEMENTED], [1],
[Define if the 'robust' attribute of pthread_mutex* doesn't exist.])
fi
fi
fi
])
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