1#!/bin/sh
2# Ensure that nproc prints a number > 0
3
4# Copyright (C) 2009-2023 Free Software Foundation, Inc.
5
6# This program is free software: you can redistribute it and/or modify
7# it under the terms of the GNU General Public License as published by
8# the Free Software Foundation, either version 3 of the License, or
9# (at your option) any later version.
10
11# This program is distributed in the hope that it will be useful,
12# but WITHOUT ANY WARRANTY; without even the implied warranty of
13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14# GNU General Public License for more details.
15
16# You should have received a copy of the GNU General Public License
17# along with this program.  If not, see <https://www.gnu.org/licenses/>.
18
19. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
20print_ver_ nproc
21
22for mode in --all ''; do
23    procs=$(nproc $mode)
24    test "$procs" -gt 0 || fail=1
25done
26
27for i in -1000 0 1 1000; do
28    procs=$(OMP_NUM_THREADS=$i nproc)
29    test "$procs" -gt 0 || fail=1
30done
31
32for i in 0 ' 1' 1000; do
33    procs=$(nproc --ignore="$i")
34    test "$procs" -gt 0 || fail=1
35done
36
37for i in -1 N; do
38    returns_ 1 nproc --ignore=$i || fail=1
39done
40
41procs=$(OMP_NUM_THREADS=42 nproc --ignore=40)
42test "$procs" -eq 2 || fail=1
43
44Exit $fail
45