Merge 0d40164815 into f949537280

arch/GNU/getload.c

@@ -0,0 +1,64 @@
+#define	LOADFILE	"/proc/loadavg"
+
+/* What the contents of the proc file look like, as an example:
+ * 0.00 0.00 0.00 1/59 10941
+ */
+
+#include "ttyload.h"
+
+#include <stdio.h>		/* for perror */
+#include <stdlib.h>		/* for exit() */
+#include <unistd.h>		/* for sleep() */
+
+void	getload(load_list *loadavgs)
+{
+    float	theload[3];
+    FILE	*loadfile;
+    int		ret;
+
+    /* just for sanity: */
+    if(!loadavgs)
+    {
+    	fprintf(stderr, "getload called without loadavgs pointer.\n");
+	exit(2);
+    }
+
+    if(!(loadfile = fopen(LOADFILE, "r")))
+    {
+    	perror("Open of " LOADFILE " failed");
+	exit(1);
+    }
+
+    ret = fscanf(loadfile, "%f %f %f ", &(theload[0]), &(theload[1]), &(theload[2]));
+
+    if(fclose(loadfile) != 0)
+    {
+    	perror("Close of " LOADFILE " failed?!");
+	exit(1);
+    }
+
+    /* so the caller _can_ (maybe not _will_) know how we did */
+    loadavgs->numloads	= ret;
+    loadavgs->one_minute	= theload[0] * 1024;
+    loadavgs->five_minute	= theload[1] * 1024;
+    loadavgs->fifteen_minute	= theload[2] * 1024;
+
+    /* a little warning thing... should probably be re-written
+     * for the Linux/fscanf stuff, this is a hold-over from the
+     * solaris stuff.  */
+    switch(ret)
+    {
+	case 2:
+	    fprintf(stderr, "15 minute Load average is unreliable.\n");
+	    sleep(5);
+	    break;
+	case 1:
+	    fprintf(stderr, "5 and 15 minute load averages are unreliable.\n");
+	    sleep(5);
+	    break;
+	case 0:
+	    fprintf(stderr, "Sorry, couldn't get any load "
+	    	"averages.  This is, therefore,  pointless.\n");
+	    exit(1);
+    }
+}

arch/GNU/terminfo.c

@@ -0,0 +1,28 @@
+/*
+ * arch/Linux/terminfo.c -- routines for getting terminal
+ * information on Linux machines.
+ *
+ * Copyright 2001, David Lindes.  All rights reserved.
+ */
+
+#include <sys/ioctl.h>	/* for ioctl() */
+
+/* globals */
+extern	int rows;
+extern	int cols;
+
+void gettermsize()
+{
+    struct winsize info;
+
+    /* try to get data via IOCTL: */
+    if (ioctl(1 /* stdout */, TIOCGWINSZ, &info) != -1)
+    {
+	/* if successful, and the data seems sane, set the
+	 * program's globals: */
+	if(info.ws_col > 0)
+	    cols = info.ws_col;
+	if(info.ws_row > 0)
+	    rows = info.ws_row;
+    }
+}