Added a function for measuring stack usage

cpu/msp430/mtarch.c

@@ -28,7 +28,7 @@
  *
  * This file is part of the Contiki operating system.
  *
- * @(#)$Id: mtarch.c,v 1.2 2006/09/01 22:56:18 adamdunkels Exp $
+ * @(#)$Id: mtarch.c,v 1.3 2006/09/26 20:56:56 adamdunkels Exp $
  */
 
 #include <stdio.h>
@@ -46,17 +46,22 @@ void
 mtarch_start(struct mtarch_thread *t,
 	     void (*function)(void *), void *data)
 {
+  int i;
+
+  for(i = 0; i < MTARCH_STACKSIZE; ++i) {
+    t->stack[i] = i;
+  }
 
   t->sp = &t->stack[MTARCH_STACKSIZE - 1];
-  
+
   *t->sp = (unsigned short)mt_exit;
   --t->sp;
+
   *t->sp = (unsigned short)function;
   --t->sp;
-  
+
   /* Space for registers. */
   t->sp -= 11;
-
 }
 /*--------------------------------------------------------------------------*/
 static unsigned short *sptmp;
@@ -130,3 +135,14 @@ mtarch_pstart(void)
   
 }
 /*--------------------------------------------------------------------------*/
+int
+mtarch_stack_usage(struct mt_thread *t)
+{
+  int i;
+  for(i = 0; i < MTARCH_STACKSIZE; ++i) {
+    if(t->thread.stack[i] != (unsigned short)i) {
+      return MTARCH_STACKSIZE - i;
+    }
+  }
+}
+/*--------------------------------------------------------------------------*/

cpu/msp430/mtarch.h

@@ -1,44 +1,49 @@
 /*
  * Copyright (c) 2005, Swedish Institute of Computer Science
- * All rights reserved. 
+ * All rights reserved.
  *
- * Redistribution and use in source and binary forms, with or without 
+ * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions 
+ * modification, are permitted provided that the following conditions
- * are met: 
+ * are met:
- * 1. Redistributions of source code must retain the above copyright 
+ * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer. 
+ *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright 
+ * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the 
+ *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution. 
+ *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the Institute nor the names of its contributors 
+ * 3. Neither the name of the Institute nor the names of its contributors
- *    may be used to endorse or promote products derived from this software 
+ *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission. 
+ *    without specific prior written permission.
  *
- * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
+ * 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 
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE. 
+ * SUCH DAMAGE.
  *
  * This file is part of the Contiki operating system.
  *
- * @(#)$Id: mtarch.h,v 1.1 2006/06/17 22:41:21 adamdunkels Exp $
+ * @(#)$Id: mtarch.h,v 1.2 2006/09/26 20:56:56 adamdunkels Exp $
  */
 #ifndef __MTARCH_H__
 #define __MTARCH_H__
 
-#define MTARCH_STACKSIZE 64
+#define MTARCH_STACKSIZE 128
 
 struct mtarch_thread {
-  unsigned short stack[MTARCH_STACKSIZE];  
+  unsigned short stack[MTARCH_STACKSIZE];
   unsigned short *sp;
 };
 
+struct mt_thread;
+
+int mtarch_stack_usage(struct mt_thread *t);
+
+
 #endif /* __MTARCH_H__ */
 	

cpu/x86/mtarch.c

@@ -27,7 +27,14 @@ void
 mtarch_start(struct mtarch_thread *t,
 	     void (*function)(void *), void *data)
 {
+  
   struct frame *f = (struct frame *)&t->stack[MTARCH_STACKSIZE - sizeof(struct frame)/4];
+  int i;
+  
+  for(i = 0; i < MTARCH_STACKSIZE; ++i) {
+    t->stack[i] = i;
+  }
+  
   memset(f, 0, sizeof(struct frame));
   f->retaddr = (unsigned long)function;
   f->data    = (unsigned long)data;
@@ -99,3 +106,14 @@ mtarch_pstart(void)
   
 }
 /*--------------------------------------------------------------------------*/
+int
+mtarch_stack_usage(struct mt_thread *t)
+{
+  int i;
+  for(i = 0; i < MTARCH_STACKSIZE; ++i) {
+    if(t->thread.stack[i] != i) {
+      return MTARCH_STACKSIZE - i;
+    }
+  }
+}
+/*--------------------------------------------------------------------------*/

cpu/x86/mtarch.h

@@ -41,5 +41,9 @@ struct mtarch_thread {
   unsigned long sp;
 };
 
+struct mt_thread;
+
+int mtarch_stack_usage(struct mt_thread *t);
+
 #endif /* __MTARCH_H__ */