Initial version

code/test/sort.c

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+/* sort.c 
+ *    Test program to sort a large number of integers through BubbleSort.
+ *
+ *    Intention is to stress virtual memory system.
+ *
+ *    Ideally, we could read the unsorted array off of the file system,
+ *	and store the result back to the file system!
+ */
+
+#include "syscall.h"
+
+#define N 1024
+int A[N];			/* size of physical memory; with code, we'll run out of space! */
+
+int
+main ()
+{
+    int i, j, tmp;
+
+    /* first initialize the array, in reverse sorted order */
+    for (i = 0; i < N; i++)
+	A[i] = N - i;
+
+    /* then sort! */
+    for (i = 1; i < N; i++)
+	for (j = 0; j < N - i; j++)
+	    if (A[j] > A[j + 1])
+	      {			/* out of order -> need to swap ! */
+		  tmp = A[j];
+		  A[j] = A[j + 1];
+		  A[j + 1] = tmp;
+	      }
+    Exit (A[0]);		/* and then we're done -- should be 0! */
+}