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authorAlexander Monakov <amonakov@ispras.ru>2015-02-24 21:44:07 +0300
committerRich Felker <dalias@aerifal.cx>2015-02-25 15:37:55 -0500
commit20cbd607759038dca57f84ef7e7b5d44a3088574 (patch)
tree104f6987b3cb8ea4b741c67a20da11ae140d76d4 /src
parent2de85a985654d2c944931267645d9a0686242dfe (diff)
downloadmusl-20cbd607759038dca57f84ef7e7b5d44a3088574.tar.gz
getloadavg: use sysinfo() instead of /proc/loadavg
Based on a patch by Szabolcs Nagy.
Diffstat (limited to 'src')
-rw-r--r--src/legacy/getloadavg.c18
1 files changed, 7 insertions, 11 deletions
diff --git a/src/legacy/getloadavg.c b/src/legacy/getloadavg.c
index 43a8c9e3..ff06de0f 100644
--- a/src/legacy/getloadavg.c
+++ b/src/legacy/getloadavg.c
@@ -1,18 +1,14 @@
#define _GNU_SOURCE
#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
+#include <sys/sysinfo.h>
int getloadavg(double *a, int n)
{
- int i;
- double b[3];
- FILE *f = fopen("/proc/loadavg", "rbe");
- if (!f) return -1;
- i = fscanf(f, "%lf %lf %lf", b, b+1, b+2);
- fclose(f);
- if (n > i) n = i;
- if (n < 0) return -1;
- memcpy(a, b, n * sizeof *a);
+ struct sysinfo si;
+ if (n <= 0) return n ? -1 : 0;
+ sysinfo(&si);
+ if (n > 3) n = 3;
+ for (int i=0; i<n; i++)
+ a[i] = 1.0/(1<<SI_LOAD_SHIFT) * si.loads[i];
return n;
}