示例#1
1
  private static void showThreads(PrintStream pw, ThreadGroup g, Thread current) {
    int nthreads = g.activeCount();
    pw.println("\nThread Group = " + g.getName() + " activeCount= " + nthreads);
    Thread[] tarray = new Thread[nthreads];
    int n = g.enumerate(tarray, false);

    for (int i = 0; i < n; i++) {
      Thread thread = tarray[i];
      ClassLoader loader = thread.getContextClassLoader();
      String loaderName = (loader == null) ? "Default" : loader.getClass().getName();
      Thread.State state = thread.getState();
      long id = thread.getId();
      pw.print("   " + id + " " + thread.getName() + " " + state + " " + loaderName);
      if (thread == current) pw.println(" **** CURRENT ***");
      else pw.println();
    }

    int ngroups = g.activeGroupCount();
    ThreadGroup[] garray = new ThreadGroup[ngroups];
    int ng = g.enumerate(garray, false);
    for (int i = 0; i < ng; i++) {
      ThreadGroup nested = garray[i];
      showThreads(pw, nested, current);
    }
  }
示例#2
0
  /** Utility routine for setting the context class loader. Returns previous class loader. */
  public static ClassLoader setContextClassLoader(ClassLoader newClassLoader) {

    // Can only reference final local variables from dopriveleged block
    final ClassLoader classLoaderToSet = newClassLoader;

    final Thread currentThread = Thread.currentThread();
    ClassLoader originalClassLoader = currentThread.getContextClassLoader();

    if (classLoaderToSet != originalClassLoader) {
      if (System.getSecurityManager() == null) {
        currentThread.setContextClassLoader(classLoaderToSet);
      } else {
        java.security.AccessController.doPrivileged(
            new java.security.PrivilegedAction() {
              public java.lang.Object run() {
                currentThread.setContextClassLoader(classLoaderToSet);
                return null;
              }
            });
      }
    }
    return originalClassLoader;
  }