org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/resources/evProcessor/ResourcesAfterUpdateHandlers.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009 Ericsson
   3  *
   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
   8  *
   9  * Contributors:
  10  *   Alvaro Sanchez-Leon (alvsan09@gmail.com) - Initial API and implementation
  11  *******************************************************************************/
  12 package org.eclipse.linuxtools.lttng.ui.views.resources.evProcessor;
  13
  14 import org.eclipse.linuxtools.lttng.event.LttngEvent;
  15 import org.eclipse.linuxtools.lttng.state.evProcessor.ILttngEventProcessor;
  16 import org.eclipse.linuxtools.lttng.state.model.LttngTraceState;
  17
  18 /**
  19  * Creates instances of specific after state update handlers, per corresponding
  20  * event.
  21  *
  22  * @author alvaro
  23  *
  24  */
  25 public class ResourcesAfterUpdateHandlers {
  26
  27         /**
  28          * <p>
  29          * Handles: LTT_EVENT_SCHED_SCHEDULE
  30          * </p>
  31          * Replace C function named "after_schedchange_hook" in eventhooks.c
  32          * <p>
  33          * Fields: LTT_FIELD_PREV_PID, LTT_FIELD_NEXT_PID, LTT_FIELD_PREV_STATE
  34          * </p>
  35          *
  36          * @return
  37          */
  38         final ILttngEventProcessor getAfterSchedChangeHandler() {
  39                 AbsResourcesTRangeUpdate handler = new AbsResourcesTRangeUpdate() {
  40
  41                         @Override
  42                         public boolean process(LttngEvent trcEvent, LttngTraceState traceSt) {
  43
  44                                 // TODO: After sched scheduler handler should implement an
  45                                 // update to the current resource data, similar to
  46                                 // current_hash_data in C
  47                                 // We don't keep track of current hashed resource, we look in
  48                                 // the hash table every time. keeping track of current hash may
  49                                 // improve performance, although needs to be bench marked to
  50                                 // verify
  51                                 // if there's is a real gain.
  52
  53                                 // process_list->current_hash_data[trace_num][process_in->cpu] =
  54                                 // hashed_process_data_in;
  55
  56                                 return false;
  57                         }
  58                 };
  59
  60                 return handler;
  61         }
  62
  63         /**
  64          * Drawing stuff ?
  65          */
  66         // int after_request(void *hook_data, void *call_data)
  67         // int after_chunk(void *hook_data, void *call_data)
  68         // int before_statedump_end(void *hook_data, void *call_data)
  69 }