101 lines
3.3 KiB
Java
101 lines
3.3 KiB
Java
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package com.netscape.jsdebugging.jslogger;
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import netscape.jsdebug.*;
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class CallChain
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{
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// compare return codes
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public static final int EQUAL = 0;
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public static final int CALLER = 1;
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public static final int CALLEE = 2;
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public static final int DISJOINT = 3;
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public CallChain( JSThreadState threadState )
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{
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try
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{
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StackFrameInfo[] infoarray = threadState.getStack();
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if( null == infoarray || 0 == infoarray.length )
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return;
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int count = infoarray.length;
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_chain = new Script[count];
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for( int i = 0; i < count; i++ )
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_chain[i] = ((JSPC)(infoarray[i].getPC())).getScript();
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}
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catch( InvalidInfoException e )
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{
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_chain = null;
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return;
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}
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}
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public int compare( CallChain other )
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{
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if( this == other )
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return EQUAL;
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if( null == _chain || null == other || null == other._chain )
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return DISJOINT;
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int count = _chain.length;
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int other_count = other._chain.length;
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if( 0 == count || 0 == other_count )
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return DISJOINT;
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int lesser_count = Math.min( count, other_count );
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int i;
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for( i = 0; i < lesser_count; i++ )
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{
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if( ! _chain[i].equals(other._chain[i]) )
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return DISJOINT;
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}
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if( count > other_count )
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return CALLER;
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if( count < other_count )
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return CALLEE;
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return EQUAL;
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}
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private Script[] _chain;
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}
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