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dnl common platform checks needed by MPMs, methods for MPMs to state
dnl their support for the platform, functions to query MPM properties
APR_CHECK_APR_DEFINE(APR_HAS_THREADS)
have_threaded_sig_graceful=yes
case $host in
*-linux-*)
case `uname -r` in
2.0* )
dnl Threaded MPM's are not supported on Linux 2.0
dnl as on 2.0 the linuxthreads library uses SIGUSR1
dnl and SIGUSR2 internally
have_threaded_sig_graceful=no
;;
esac
;;
esac
dnl See if APR supports APR_POLLSET_THREADSAFE.
dnl XXX This hack tests for the underlying functions used by APR when it supports
dnl XXX APR_POLLSET_THREADSAFE, and duplicates APR's Darwin version check.
dnl A run-time check for
dnl apr_pollset_create(,,APR_POLLSET_THREADSAFE) == APR_SUCCESS
dnl would be great but an in-tree apr (srclib/apr) hasn't been built yet.
AC_CACHE_CHECK([whether APR supports thread-safe pollsets], [ac_cv_have_threadsafe_pollset], [
case $host in
*-apple-darwin[[1-9]].*)
APR_SETIFNULL(ac_cv_func_kqueue, [no])
;;
esac
AC_CHECK_FUNCS(kqueue port_create epoll_create)
if test "$ac_cv_func_kqueue$ac_cv_func_port_create$ac_cv_func_epoll_create" != "nonono"; then
ac_cv_have_threadsafe_pollset=yes
else
ac_cv_have_threadsafe_pollset=no
fi
])
dnl See if APR has skiplist
dnl The base httpd prereq is APR 1.4.x, so we don't have to consider
dnl earlier versions.
case $APR_VERSION in
1.4*)
apr_has_skiplist=no
;;
*)
apr_has_skiplist=yes
esac
dnl See if this is a forking platform w.r.t. MPMs
case $host in
*mingw32* | *os2-emx*)
forking_mpms_supported=no
;;
*)
forking_mpms_supported=yes
;;
esac
dnl APACHE_MPM_SUPPORTED(name, supports-shared, is_threaded)
AC_DEFUN([APACHE_MPM_SUPPORTED],[
if test "$2" = "yes"; then
eval "ap_supported_mpm_$1=shared"
ap_supported_shared_mpms="$ap_supported_shared_mpms $1 "
else
eval "ap_supported_mpm_$1=static"
fi
if test "$3" = "yes"; then
eval "ap_threaded_mpm_$1=yes"
fi
])dnl
dnl APACHE_MPM_ENABLED(name)
AC_DEFUN([APACHE_MPM_ENABLED],[
if ap_mpm_is_enabled $1; then
:
else
eval "ap_enabled_mpm_$1=yes"
ap_enabled_mpms="$ap_enabled_mpms $1 "
fi
])dnl
ap_mpm_is_supported ()
{
eval "tmp=\$ap_supported_mpm_$1"
if test -z "$tmp"; then
return 1
else
return 0
fi
}
ap_mpm_supports_shared ()
{
eval "tmp=\$ap_supported_mpm_$1"
if test "$tmp" = "shared"; then
return 0
else
return 1
fi
}
ap_mpm_is_threaded ()
{
if test "$mpm_build" = "shared" -a ac_cv_define_APR_HAS_THREADS = "yes"; then
return 0
fi
for mpm in $ap_enabled_mpms; do
eval "tmp=\$ap_threaded_mpm_$mpm"
if test "$tmp" = "yes"; then
return 0
fi
done
return 1
}
ap_mpm_is_enabled ()
{
eval "tmp=\$ap_enabled_mpm_$1"
if test "$tmp" = "yes"; then
return 0
else
return 1
fi
}