From 8dd302cda6aeff5152139d7638217c96992709d3 Mon Sep 17 00:00:00 2001 From: Paul Smith Date: Mon, 4 Jul 2022 16:32:08 -0400 Subject: Add gnulib getloadavg --- gl/m4/getloadavg.m4 | 161 ++++++++++++++++++++++++++++++++++++++++++++++++++ gl/modules/getloadavg | 39 ++++++++++++ 2 files changed, 200 insertions(+) create mode 100644 gl/m4/getloadavg.m4 create mode 100644 gl/modules/getloadavg (limited to 'gl') diff --git a/gl/m4/getloadavg.m4 b/gl/m4/getloadavg.m4 new file mode 100644 index 00000000..7bb8890b --- /dev/null +++ b/gl/m4/getloadavg.m4 @@ -0,0 +1,161 @@ +# Check for getloadavg. + +# Copyright (C) 1992-1996, 1999-2000, 2002-2003, 2006, 2008-2022 Free Software +# Foundation, Inc. + +# This file is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +#serial 10 + +# Autoconf defines AC_FUNC_GETLOADAVG, but that is obsolescent. +# New applications should use gl_GETLOADAVG instead. + +# gl_GETLOADAVG +# ------------- +AC_DEFUN([gl_GETLOADAVG], +[AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) + +# Persuade glibc to declare getloadavg(). +AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) + +gl_save_LIBS=$LIBS + +# getloadavg is present in libc on glibc >= 2.2, Mac OS X, FreeBSD >= 2.0, +# NetBSD >= 0.9, OpenBSD >= 2.0, Solaris >= 7. +HAVE_GETLOADAVG=1 +AC_CHECK_FUNC([getloadavg], [], + [gl_func_getloadavg_done=no + + # Some systems with -lutil have (and need) -lkvm as well, some do not. + # On Solaris, -lkvm requires nlist from -lelf, so check that first + # to get the right answer into the cache. + # For kstat on solaris, we need to test for libelf and libkvm to force the + # definition of SVR4 below. + if test $gl_func_getloadavg_done = no; then + AC_CHECK_LIB([elf], [elf_begin], [LIBS="-lelf $LIBS"]) + AC_CHECK_LIB([kvm], [kvm_open], [LIBS="-lkvm $LIBS"]) + # Check for the 4.4BSD definition of getloadavg. + AC_CHECK_LIB([util], [getloadavg], + [LIBS="-lutil $LIBS" gl_func_getloadavg_done=yes]) + fi + + if test $gl_func_getloadavg_done = no; then + # There is a commonly available library for RS/6000 AIX. + # Since it is not a standard part of AIX, it might be installed locally. + gl_getloadavg_LIBS=$LIBS + if test $cross_compiling != yes; then + LIBS="-L/usr/local/lib $LIBS" + fi + AC_CHECK_LIB([getloadavg], [getloadavg], + [LIBS="-lgetloadavg $LIBS" gl_func_getloadavg_done=yes], + [LIBS=$gl_getloadavg_LIBS]) + fi + + # Set up the replacement function if necessary. + if test $gl_func_getloadavg_done = no; then + HAVE_GETLOADAVG=0 + + # Solaris has libkstat which does not require root. + AC_CHECK_LIB([kstat], [kstat_open]) + test $ac_cv_lib_kstat_kstat_open = yes && gl_func_getloadavg_done=yes + + # AIX has libperfstat which does not require root + if test $gl_func_getloadavg_done = no; then + AC_CHECK_LIB([perfstat], [perfstat_cpu_total]) + test $ac_cv_lib_perfstat_perfstat_cpu_total = yes && gl_func_getloadavg_done=yes + fi + + if test $gl_func_getloadavg_done = no; then + AC_CHECK_HEADER([sys/dg_sys_info.h], + [gl_func_getloadavg_done=yes + AC_DEFINE([DGUX], [1], [Define to 1 for DGUX with .]) + AC_CHECK_LIB([dgc], [dg_sys_info])]) + fi + fi]) + +if test "x$gl_save_LIBS" = x; then + GETLOADAVG_LIBS=$LIBS +else + GETLOADAVG_LIBS=`echo "$LIBS" | sed "s!$gl_save_LIBS!!"` +fi +LIBS=$gl_save_LIBS + +AC_SUBST([GETLOADAVG_LIBS])dnl + +# Test whether the system declares getloadavg. Solaris has the function +# but declares it in , not . +AC_CHECK_HEADERS([sys/loadavg.h]) +if test $ac_cv_header_sys_loadavg_h = yes; then + HAVE_SYS_LOADAVG_H=1 +else + HAVE_SYS_LOADAVG_H=0 +fi +AC_CHECK_DECL([getloadavg], [], [HAVE_DECL_GETLOADAVG=0], + [[#if HAVE_SYS_LOADAVG_H + /* OpenIndiana has a bug: must be included before + . */ + # include + # include + #endif + #include ]]) +])# gl_GETLOADAVG + + +# gl_PREREQ_GETLOADAVG +# -------------------- +# Set up the AC_LIBOBJ replacement of 'getloadavg'. +AC_DEFUN([gl_PREREQ_GETLOADAVG], +[ +# Figure out what our getloadavg.c needs. + +AC_CHECK_HEADERS_ONCE([sys/param.h unistd.h]) + +# On HPUX9, an unprivileged user can get load averages this way. +if test $gl_func_getloadavg_done = no; then + AC_CHECK_FUNCS([pstat_getdynamic], [gl_func_getloadavg_done=yes]) +fi + +# We cannot check for , because Solaris 2 does not use dwarf (it +# uses stabs), but it is still SVR4. We cannot check for because +# Irix 4.0.5F has the header but not the library. +if test $gl_func_getloadavg_done = no && test "$ac_cv_lib_elf_elf_begin" = yes \ + && test "$ac_cv_lib_kvm_kvm_open" = yes; then + gl_func_getloadavg_done=yes + AC_DEFINE([SVR4], [1], [Define to 1 on System V Release 4.]) +fi + +if test $gl_func_getloadavg_done = no; then + AC_CHECK_HEADER([inq_stats/cpustats.h], + [gl_func_getloadavg_done=yes + AC_DEFINE([UMAX], [1], [Define to 1 for Encore UMAX.]) + AC_DEFINE([UMAX4_3], [1], + [Define to 1 for Encore UMAX 4.3 that has + instead of .])]) +fi + +if test $gl_func_getloadavg_done = no; then + AC_CHECK_HEADER([sys/cpustats.h], + [gl_func_getloadavg_done=yes; AC_DEFINE([UMAX])]) +fi + +if test $gl_func_getloadavg_done = no; then + AC_CHECK_HEADERS([mach/mach.h]) +fi + +AC_CHECK_HEADERS([nlist.h], +[AC_CHECK_MEMBERS([struct nlist.n_un.n_name], + [], [], + [#include ]) + AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include ]], + [[struct nlist x; + #ifdef HAVE_STRUCT_NLIST_N_UN_N_NAME + x.n_un.n_name = ""; + #else + x.n_name = ""; + #endif]])], + [AC_DEFINE([N_NAME_POINTER], [1], + [Define to 1 if the nlist n_name member is a pointer])]) +])dnl +])# gl_PREREQ_GETLOADAVG diff --git a/gl/modules/getloadavg b/gl/modules/getloadavg new file mode 100644 index 00000000..9a5553eb --- /dev/null +++ b/gl/modules/getloadavg @@ -0,0 +1,39 @@ +Description: +Return the current system load averages. + +Files: +lib/getloadavg.c +m4/getloadavg.m4 + +Depends-on: +extensions +intprops [test $HAVE_GETLOADAVG = 0] +open [case $host_os in mingw*) false;; *) test $HAVE_GETLOADAVG = 0;; esac] +stdbool [test $HAVE_GETLOADAVG = 0] +stdlib [test $HAVE_GETLOADAVG = 0] + +configure.ac: +AC_REQUIRE([AC_CANONICAL_HOST]) +gl_GETLOADAVG +gl_CONDITIONAL([GL_COND_OBJ_GETLOADAVG], [test $HAVE_GETLOADAVG = 0]) +AM_COND_IF([GL_COND_OBJ_GETLOADAVG], [ + gl_PREREQ_GETLOADAVG +]) +gl_STDLIB_MODULE_INDICATOR([getloadavg]) + +Makefile.am: +if GL_COND_OBJ_GETLOADAVG +lib_SOURCES += getloadavg.c +endif + +Include: + + +Link: +$(GETLOADAVG_LIBS) + +License: +GPL + +Maintainer: +Jim Meyering -- cgit v1.2.1