mirror of https://github.com/lindes/ttyload.git
47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
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#include "ttyload.h"
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#include <stdio.h> /* for perror */
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#include <stdlib.h> /* for exit() */
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#include <unistd.h> /* for sleep() */
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#ifdef NEED_LOCAL_HEADERS
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#include "loadavg.h"
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#else /* don't NEED_LOCAL_HEADERS */
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#include <sys/loadavg.h> /* for getloadavg() */
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#endif /* (don't) NEED_LOCAL_HEADERS */
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void getload(load_list *loadavgs)
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{
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double theload[3];
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int ret;
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if((ret = getloadavg(theload, 3)) < 0)
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{
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perror("getloadavg() failed");
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exit(1);
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}
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switch(ret)
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{
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case 1:
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loadavgs->one_minute = theload[0];
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fprintf(stderr, "5 minute Load average is unreliable.\n");
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sleep(1);
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/* we warned, but fall through anyway */
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case 2:
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loadavgs->five_minute = theload[1];
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fprintf(stderr, "15 minute Load average is unreliable.\n");
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sleep(1);
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/* we warned, but fall through anyway */
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case 3:
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/* so the caller _can_ know how we did */
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loadavgs->numloads = ret;
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loadavgs->fifteen_minute = theload[2];
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break;
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default:
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fprintf(stderr, "Sorry, couldn't get any load "
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"averages. This is, therefore, pointless.\n");
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exit(1);
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}
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}
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