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authorCameron Katri <me@cameronkatri.com>2021-05-09 14:20:58 -0400
committerCameron Katri <me@cameronkatri.com>2021-05-09 14:20:58 -0400
commit5fd83771641d15c418f747bd343ba6738d3875f7 (patch)
tree5abf0f78f680d9837dbd93d4d4c3933bb7509599 /system_cmds/atrun.tproj/gloadavg.c
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Diffstat (limited to 'system_cmds/atrun.tproj/gloadavg.c')
-rw-r--r--system_cmds/atrun.tproj/gloadavg.c72
1 files changed, 72 insertions, 0 deletions
diff --git a/system_cmds/atrun.tproj/gloadavg.c b/system_cmds/atrun.tproj/gloadavg.c
new file mode 100644
index 0000000..267a8c8
--- /dev/null
+++ b/system_cmds/atrun.tproj/gloadavg.c
@@ -0,0 +1,72 @@
+/*
+ * gloadavg.c - get load average for Linux
+ * Copyright (C) 1993 Thomas Koenig
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. The name of the author(s) may not be used to endorse or promote
+ * products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef lint
+static const char rcsid[] =
+ "$FreeBSD: src/libexec/atrun/gloadavg.c,v 1.5 1999/08/28 00:09:12 peter Exp $";
+#endif /* not lint */
+
+#ifndef __FreeBSD__
+#define _POSIX_SOURCE 1
+
+/* System Headers */
+
+#include <stdio.h>
+#else
+#include <stdlib.h>
+#endif
+
+/* Local headers */
+
+#include "gloadavg.h"
+
+/* Global functions */
+
+void perr(const char *a);
+
+double
+gloadavg(void)
+/* return the current load average as a floating point number, or <0 for
+ * error
+ */
+{
+ double result;
+#ifndef __FreeBSD__
+ FILE *fp;
+
+ if((fp=fopen(PROC_DIR "loadavg","r")) == NULL)
+ result = -1.0;
+ else
+ {
+ if(fscanf(fp,"%lf",&result) != 1)
+ result = -1.0;
+ fclose(fp);
+ }
+#else
+ if (getloadavg(&result, 1) != 1)
+ perr("error in getloadavg");
+#endif
+ return result;
+}