1 /*******************************************************************************
2 * Copyright (c) 2009, 2013 Ericsson
4 * All rights reserved. This program and the accompanying materials are
5 * made available under the terms of the Eclipse Public License v1.0 which
6 * accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
10 * Francois Chouinard - Initial API and implementation
11 * Francois Chouinard - Updated as per TMF Trace Model 1.0
12 * Patrick Tasse - Updated for removal of context clone
13 *******************************************************************************/
15 package org
.eclipse
.linuxtools
.tmf
.core
.trace
;
18 * The basic trace context structure in TMF. The purpose of the context is to
19 * associate a trace location to an event at a specific rank (order).
21 * The context should be sufficient to allow the trace to position itself so
22 * that performing a trace read operation will yield the corresponding 'nth'
26 * @author Francois Chouinard
30 public interface ITmfContext
{
32 // ------------------------------------------------------------------------
34 // ------------------------------------------------------------------------
37 * The unknown event rank
39 public long UNKNOWN_RANK
= -1L;
41 // ------------------------------------------------------------------------
43 // ------------------------------------------------------------------------
46 * @return the rank of the event at the context location
51 * @return the location of the event at the context rank
53 ITmfLocation
getLocation();
56 * @return indicates if the context rank is valid (!= UNKNOWN_RANK)
58 boolean hasValidRank();
60 // ------------------------------------------------------------------------
62 // ------------------------------------------------------------------------
65 * @param location the new location
67 void setLocation(ITmfLocation location
);
70 * @param rank the new rank
72 void setRank(long rank
);
75 * Increment the context rank
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