Automation testing tools.

kern/test/automationtest.c

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+/*
+ * 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.
+ */
+
+/*
+ * Automation test code for creating (and detecting) kernel dead and livelocks.
+ */
+
+#include <types.h>
+#include <kern/wait.h>
+#include <lib.h>
+#include <clock.h>
+#include <thread.h>
+#include <synch.h>
+#include <test.h>
+#include <kern/secret.h>
+#include <spinlock.h>
+
+#define MAX_SPINNERS 16
+
+static struct lock *deadlock_locks[2];
+static struct semaphore *deadlock_sem;
+
+struct spinlock spinners_lock[MAX_SPINNERS];
+
+static
+void
+inititems(void)
+{
+	int i;
+
+	for (i = 0; i < 2; i++) {
+		deadlock_locks[i] = lock_create("deadlock lock");
+		if (deadlock_locks[i] == NULL) {
+			panic("automationtest: lock_create failed\n");
+		}
+	}
+	deadlock_sem = sem_create("deadlock sem", 0);
+	if (deadlock_sem == NULL) {
+		panic("automationtest: sem_create failed\n");
+	}
+	
+	for (i = 0; i < MAX_SPINNERS; i++) {
+		spinlock_init(&(spinners_lock[i]));
+	}
+}
+
+static
+void
+dltestthread(void *junk1, unsigned long junk2)
+{
+	(void)junk1;
+	(void)junk2;
+	
+	lock_acquire(deadlock_locks[1]);	
+	V(deadlock_sem);
+	lock_acquire(deadlock_locks[0]);	
+}
+
+int
+dltest(int nargs, char **args)
+{
+	int result;
+
+	(void)nargs;
+	(void)args;
+	
+	inititems();
+	
+	lock_acquire(deadlock_locks[0]);	
+
+	result = thread_fork("dltest", NULL, dltestthread, NULL, (unsigned long)0);
+	if (result) {
+		panic("dltest: thread_fork failed: %s\n", strerror(result));
+	}
+
+	P(deadlock_sem);
+	lock_acquire(deadlock_locks[1]);	
+
+	panic("dltest: didn't create deadlock (locks probably don't work)\n");
+	
+	// 09 Jan 2015 : GWA : Shouldn't return.
+	return 0;
+}
+
+inline
+static
+void
+infinite_spinner(unsigned long i)
+{
+	(void)i;
+	volatile int j;
+
+	for (j=0; j<10000000; j++);
+
+	spinlock_acquire(&(spinners_lock[i]));
+	
+	for (j=0; j<=1000; j++) {
+		if (j == 1000) {
+			j = 0;
+		}
+	}
+	panic("ll1test: infinite spin loop completed\n");
+}
+
+int
+ll1test(int nargs, char **args)
+{
+	(void)nargs;
+	(void)args;
+	
+	inititems();
+
+	infinite_spinner((unsigned long) 0);
+
+	// 09 Jan 2015 : GWA : Shouldn't return.
+	return 0;
+}
+
+
+static
+void
+ll16testthread(void *junk1, unsigned long i)
+{
+	(void)junk1;
+
+	infinite_spinner(i);
+}
+
+int
+ll16test(int nargs, char **args)
+{
+	int i, result;
+	
+	inititems();
+
+	(void)nargs;
+	(void)args;
+
+	for (i=1; i<16; i++) {
+		result = thread_fork("ll16testthread", NULL, ll16testthread, NULL, (unsigned long)i);
+		if (result) {
+			panic("ll16test: thread_fork failed: %s\n", strerror(result));
+		}
+	}
+	infinite_spinner(0);
+
+	// 09 Jan 2015 : GWA : Shouldn't return.
+	return 0;
+}