PERFORCE change 104183 for review

[Chris Jones]

http://perforce.freebsd.org/chv.cgi?CH=104183

Change 104183 by cdjones at cdjones-impulse on 2006/08/16 06:00:03

	Add some useful options for chewing through CPU.

Affected files ...

.. //depot/projects/soc2006/cdjones_jail/test/useCpu.c#2 edit

Differences ...

==== //depot/projects/soc2006/cdjones_jail/test/useCpu.c#2 (text+ko) ====

@@ -6,11 +6,48 @@
 #include <string.h>
 #include <unistd.h>
 
+static void usage(void);
+extern char **environ;
+
 int
 main(int argc, char **argv)
 {
+  int ch;
+  unsigned int repeats = 0;
+  unsigned int verbose = 0;
+  unsigned int interval = 1000;
   int a;
 
-  while (1)
-    a = 1 + 2;
+  while ((ch = getopt(argc, argv, "vn:i:")) != -1) {
+    switch (ch) {
+      case 'n':
+        repeats = atoi(optarg);
+	break;
+      case 'i':
+        interval = atoi(optarg);
+        break;
+      case 'v':
+	verbose = 1;
+        break;
+      default:
+        usage();
+    }
+  }
+  argc -= optind;
+  argv += optind;
+
+  while (repeats) {
+    a = (0xdeadbeef * 2) + -1;
+    if (verbose && 0 == (repeats % interval)) 
+      printf("repeat: %d\n", repeats);
+    repeats--;
+  }
+  exit(0);
+}
+
+static void
+usage(void)
+{
+   (void) fprintf(stderr, "%s\n",
+     "usage: useCpu [-v] [-i interval] [-n count]");
 }