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| author | Alexander Monakov <amonakov@ispras.ru> | 2015-02-24 21:44:07 +0300 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2015-02-25 15:37:55 -0500 |
| commit | 20cbd607759038dca57f84ef7e7b5d44a3088574 (patch) | |
| tree | 104f6987b3cb8ea4b741c67a20da11ae140d76d4 | |
| parent | 2de85a985654d2c944931267645d9a0686242dfe (diff) | |
| download | musl-20cbd607759038dca57f84ef7e7b5d44a3088574.tar.gz musl-20cbd607759038dca57f84ef7e7b5d44a3088574.tar.xz musl-20cbd607759038dca57f84ef7e7b5d44a3088574.zip | |
getloadavg: use sysinfo() instead of /proc/loadavg
Based on a patch by Szabolcs Nagy.
| -rw-r--r-- | src/legacy/getloadavg.c | 18 |
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; } |