org.eclipse.linuxtools.lttng.ui/src/org/eclipse/linuxtools/lttng/ui/views/controlflow/model/FlowProcessContainer.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.controlflow.model;
  13
  14 import java.util.Vector;
  15
  16 import org.eclipse.linuxtools.lttng.ui.model.trange.TimeRangeEventProcess;
  17
  18 /**
  19  * Common location to allocate the processes in use by the Control flow view
  20  *
  21  * @author alvaro
  22  *
  23  */
  24 public class FlowProcessContainer {
  25         // ========================================================================
  26         // Data
  27         // ========================================================================
  28         private final Vector<TimeRangeEventProcess> processes = new Vector<TimeRangeEventProcess>();
  29         private int idgen = 0;
  30
  31         // ========================================================================
  32         // Constructor
  33         // ========================================================================
  34
  35         /**
  36          * Package level constructor
  37          */
  38         FlowProcessContainer() {
  39
  40         }
  41
  42         // ========================================================================
  43         // Methods
  44         // ========================================================================
  45         /**
  46          * Interface to add processes.
  47          *
  48          * @param process
  49          */
  50         public void addProcesse(TimeRangeEventProcess process) {
  51                 if (process != null) {
  52                         processes.add(process);
  53                 }
  54         }
  55
  56         /**
  57          * This method is intended for ready only purposes in order to keep the
  58          * internal data structure in Synch
  59          *
  60          * @return
  61          */
  62         public Vector<TimeRangeEventProcess> readProcesses() {
  63                 return processes;
  64         }
  65
  66         /**
  67          * Clear the children information for processes related to a specific trace
  68          * e.g. just before refreshing data with a new time range
  69          *
  70          * @param traceId
  71          */
  72         public void clearChildren(String traceId) {
  73                 String procTraceId;
  74                 for (TimeRangeEventProcess process : processes) {
  75                         procTraceId = process.getTraceID();
  76                         if (procTraceId.equals(traceId)) {
  77                                 process.getTraceEvents().clear();
  78                                 process.getChildEventComposites().clear();
  79                         }
  80                 }
  81         }
  82
  83         /**
  84          * remove the processes related to a specific trace e.g. during trace
  85          * removal
  86          *
  87          * @param traceId
  88          */
  89         public void removeProcesses(String traceId) {
  90                 String procTraceId;
  91                 for (TimeRangeEventProcess process : processes) {
  92                         procTraceId = process.getTraceID();
  93                         if (procTraceId.equals(traceId)) {
  94                             // Children and traceEvent will get claimed by the garbage collector when process is unreferenced
  95                             // Therefore, we don't need to removed them
  96                                 processes.remove(process);
  97                         }
  98                 }
  99         }
 100
 101         /**
 102          * A match is returned if the three arguments received match an entry in the
 103          * Map, otherwise null is returned
 104          *
 105          * @param pid
 106          * @param creationtime
 107          * @param traceID
 108          * @return
 109          */
 110         public TimeRangeEventProcess findProcess(Long pid, Long creationtime,
 111                         String traceID) {
 112                 TimeRangeEventProcess rprocess = null;
 113
 114                 for (TimeRangeEventProcess process : processes) {
 115                         if (process.getPid().equals(pid)) {
 116                                 if (process.getCreationTime().equals(creationtime)) {
 117                                         if (process.getTraceID().equals(traceID)) {
 118                                                 return process;
 119                                         }
 120                                 }
 121                         }
 122                 }
 123
 124                 return rprocess;
 125         }
 126
 127         /**
 128          * Generate a unique process id while building the process list
 129          *
 130          * @return
 131          */
 132         public int bookProcId() {
 133                 return idgen++;
 134         }
 135
 136 }