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.reset();
  78                         }
  79                 }
  80         }
  81
  82         /**
  83          * remove the processes related to a specific trace e.g. during trace
  84          * removal
  85          *
  86          * @param traceId
  87          */
  88         public void removeProcesses(String traceId) {
  89                 String procTraceId;
  90                 for (TimeRangeEventProcess process : processes) {
  91                         procTraceId = process.getTraceID();
  92                         if (procTraceId.equals(traceId)) {
  93                             // Children and traceEvent will get claimed by the garbage collector when process is unreferenced
  94                             // Therefore, we don't need to removed them
  95                                 processes.remove(process);
  96                         }
  97                 }
  98         }
  99
 100         /**
 101          * A match is returned if the three arguments received match an entry in the
 102          * Map, otherwise null is returned
 103          *
 104          * @param pid
 105          * @param creationtime
 106          * @param traceID
 107          * @return
 108          */
 109         public TimeRangeEventProcess findProcess(Long pid, Long creationtime,
 110                         String traceID) {
 111                 TimeRangeEventProcess rprocess = null;
 112
 113                 for (TimeRangeEventProcess process : processes) {
 114                         if (process.getPid().equals(pid)) {
 115                                 if (process.getCreationTime().equals(creationtime)) {
 116                                         if (process.getTraceID().equals(traceID)) {
 117                                                 return process;
 118                                         }
 119                                 }
 120                         }
 121                 }
 122
 123                 return rprocess;
 124         }
 125
 126         /**
 127          * Generate a unique process id while building the process list
 128          *
 129          * @return
 130          */
 131         public int bookProcId() {
 132                 return idgen++;
 133         }
 134
 135 }