Initial Spring 2016 commit.

kern/test/bitmaptest.c

@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
+ *	The President and Fellows of Harvard College.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <types.h>
+#include <lib.h>
+#include <bitmap.h>
+#include <test.h>
+
+#define TESTSIZE 533
+
+int
+bitmaptest(int nargs, char **args)
+{
+	struct bitmap *b;
+	char data[TESTSIZE];
+	uint32_t x;
+	int i;
+
+	(void)nargs;
+	(void)args;
+
+	kprintf("Starting bitmap test...\n");
+
+	for (i=0; i<TESTSIZE; i++) {
+		data[i] = random()%2;
+	}
+
+	b = bitmap_create(TESTSIZE);
+	KASSERT(b != NULL);
+
+	for (i=0; i<TESTSIZE; i++) {
+		KASSERT(bitmap_isset(b, i)==0);
+	}
+
+	for (i=0; i<TESTSIZE; i++) {
+		if (data[i]) {
+			bitmap_mark(b, i);
+		}
+	}
+	for (i=0; i<TESTSIZE; i++) {
+		if (data[i]) {
+			KASSERT(bitmap_isset(b, i));
+		}
+		else {
+			KASSERT(bitmap_isset(b, i)==0);
+		}
+	}
+
+	for (i=0; i<TESTSIZE; i++) {
+		if (data[i]) {
+			bitmap_unmark(b, i);
+		}
+		else {
+			bitmap_mark(b, i);
+		}
+	}
+	for (i=0; i<TESTSIZE; i++) {
+		if (data[i]) {
+			KASSERT(bitmap_isset(b, i)==0);
+		}
+		else {
+			KASSERT(bitmap_isset(b, i));
+		}
+	}
+
+	while (bitmap_alloc(b, &x)==0) {
+		KASSERT(x < TESTSIZE);
+		KASSERT(bitmap_isset(b, x));
+		KASSERT(data[x]==1);
+		data[x] = 0;
+	}
+
+	for (i=0; i<TESTSIZE; i++) {
+		KASSERT(bitmap_isset(b, i));
+		KASSERT(data[i]==0);
+	}
+
+	kprintf("Bitmap test complete\n");
+	return 0;
+}