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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:11:47 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 16:11:47 +0000
commit758f820bcc0f68aeebac1717e537ca13a320b909 (patch)
tree48111ece75cf4f98316848b37a7e26356e00669e /gnulib-tests/test-getloadavg.c
parentInitial commit. (diff)
downloadcoreutils-758f820bcc0f68aeebac1717e537ca13a320b909.tar.xz
coreutils-758f820bcc0f68aeebac1717e537ca13a320b909.zip
Adding upstream version 9.1.upstream/9.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gnulib-tests/test-getloadavg.c')
-rw-r--r--gnulib-tests/test-getloadavg.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/gnulib-tests/test-getloadavg.c b/gnulib-tests/test-getloadavg.c
new file mode 100644
index 0000000..8679960
--- /dev/null
+++ b/gnulib-tests/test-getloadavg.c
@@ -0,0 +1,83 @@
+/* Test of getting load average.
+ Copyright (C) 2011-2022 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+#include <config.h>
+
+#include <stdlib.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (getloadavg, int, (double [], int));
+
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+
+static void
+check_avg (int minutes, double avg, int printit)
+{
+ if (printit)
+ printf ("%d-minute: %f ", minutes, avg);
+ else
+ {
+ /* Plausibility checks. */
+ if (avg < 0.01)
+ printf ("suspiciously low %d-minute average: %f\n", minutes, avg);
+ if (avg > 1000000)
+ printf ("suspiciously high %d-minute average: %f\n", minutes, avg);
+ }
+ if (avg < 0 || avg != avg)
+ exit (minutes);
+}
+
+/* This program can also be used as a manual test, by invoking it with
+ an argument; it then prints the load average. If the argument is
+ nonzero, the manual test repeats forever, sleeping for the stated
+ interval between each iteration. */
+int
+main (int argc, char **argv)
+{
+ int naptime = 0;
+
+ if (argc > 1)
+ naptime = atoi (argv[1]);
+
+ while (1)
+ {
+ double avg[3];
+ int loads = getloadavg (avg, 3);
+ if (loads == -1)
+ {
+ if (! (errno == ENOSYS || errno == ENOTSUP || errno == ENOENT))
+ return 1;
+ perror ("Skipping test; load average not supported");
+ return 77;
+ }
+ if (loads > 0)
+ check_avg (1, avg[0], argc > 1);
+ if (loads > 1)
+ check_avg (5, avg[1], argc > 1);
+ if (loads > 2)
+ check_avg (15, avg[2], argc > 1);
+ if (loads > 0 && argc > 1)
+ putchar ('\n');
+
+ if (naptime == 0)
+ break;
+ sleep (naptime);
+ }
+
+ return 0;
+}