ThreadDump.java

/*
       This file is part of mjprof.

        mjprof is free software: you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation, either version 3 of the License, or
        (at your option) any later version.

        mjprof is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with mjprof.  If not, see <http://www.gnu.org/licenses/>.
*/

package com.performizeit.mjprof.parser;


import com.performizeit.mjprof.model.JStackHeader;

import java.util.ArrayList;

/* Thread dump consists of a header and a list ThreadInfo */
public class ThreadDump {
  protected JStackHeader header;
  ArrayList<ThreadInfo> stacks = new ArrayList<>();
  int JNIglobalReferences = -1;

  public static String JNI_GLOBAL_REFS = "JNI global references:";

  public JStackHeader getHeader() {
    return header;
  }

  public ThreadDump(String stringRep) {
    String[] splitTraces = stringRep.split("\n\"");  // Assuming that thread stack trace starts with a new line followed by "

    header = new JStackHeader(splitTraces[0]);
    for (int i = 1; i < splitTraces.length; i++) {
      if (splitTraces[i].startsWith(JNI_GLOBAL_REFS)) {
        try {
          JNIglobalReferences = Integer.parseInt(splitTraces[i].substring(splitTraces[i].indexOf(":") + 2).trim());
        } catch (NumberFormatException e) {
          // do nothing so we missed the JNI global references I do not know what to do with it.
        }

      } else {
        stacks.add(new ThreadInfo("\"" + splitTraces[i]));
      }
    }
  }

  public ThreadDump() {
    super();
  }

  public ArrayList<ThreadInfo> getStacks() {
    return stacks;
  }

  public void addThreadInfo(ThreadInfo ti) {
    stacks.add(ti);
  }

  public void setStacks(ArrayList<ThreadInfo> stacks) {
    this.stacks = stacks;
  }

  @Override
  public String toString() {
    StringBuilder s = new StringBuilder();
    s.append(header).append("\n\n");

    for (ThreadInfo stack : stacks) {
      s.append(stack.toString()).append("\n");
    }

    return s.toString();
  }


  public void setHeader(String header) {
    this.header = new JStackHeader(header);
  }

  public void setHeader(JStackHeader header) {
    this.header = header;
  }

  public ArrayList<ThreadInfo> cloneStacks() {
    ArrayList<ThreadInfo> newStcks = new ArrayList<>();
    for (ThreadInfo stk : getStacks()) {
      newStcks.add(stk);
    }
    return newStcks;
  }

  public int getJNIglobalReferences() {
    return JNIglobalReferences;
  }

  public void setJNIglobalReferences(int JNIglobalReferences) {
    this.JNIglobalReferences = JNIglobalReferences;
  }
}