content: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package art;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  public class PrintThread {
    public static void print(String[][] stack) {
      System.out.println("---------");
      for (String[] stackElement : stack) {
        for (String part : stackElement) {
          System.out.print(' ');
          System.out.print(part);
        }
        System.out.println();
      }
    }
  
    public static void print(Thread t, int start, int max) {
      print(getStackTrace(t, start, max));
    }
  
    // We have to ignore some threads when printing all stack traces. These are threads that may or
    // may not exist depending on the environment.
    public final static String IGNORE_THREAD_NAME_REGEX =
        "Binder:|RenderThread|hwuiTask|Jit thread pool worker|Instr:|JDWP|Profile Saver|main|" +
        "queued-work-looper";
    public final static Matcher IGNORE_THREADS =
        Pattern.compile(IGNORE_THREAD_NAME_REGEX).matcher("");
  
    // We have to skip the stack of some threads when printing all stack traces. These are threads
    // that may have a different call stack (e.g., when run as an app), or may be in a
    // non-deterministic state.
    public final static String CUT_STACK_THREAD_NAME_REGEX = "Daemon|main";
    public final static Matcher CUT_STACK_THREADS =
        Pattern.compile(CUT_STACK_THREAD_NAME_REGEX).matcher("");
  
    public static void printAll(Object[][] stacks) {
      List<String> stringified = new ArrayList<String>(stacks.length);
  
      for (Object[] stackInfo : stacks) {
        Thread t = (Thread)stackInfo[0];
        String name = (t != null) ? t.getName() : "null";
        String stackSerialization;
        if (CUT_STACK_THREADS.reset(name).find()) {
          // Do not print daemon stacks, as they're non-deterministic.
          stackSerialization = "<not printed>";
        } else if (IGNORE_THREADS.reset(name).find()) {
          // Skip IGNORE_THREADS.
          continue;
        } else {
          StringBuilder sb = new StringBuilder();
          for (String[] stackElement : (String[][])stackInfo[1]) {
            for (String part : stackElement) {
              sb.append(' ');
              sb.append(part);
            }
            sb.append('\n');
          }
          stackSerialization = sb.toString();
        }
        stringified.add(name + "\n" + stackSerialization);
      }
  
      Collections.sort(stringified);
  
      for (String s : stringified) {
        System.out.println("---------");
        System.out.println(s);
      }
    }
  
    public static native String[][] getStackTrace(Thread thread, int start, int max);
  }
  