+++ /dev/null
-// Thread.java - Thread class.
-
-/* Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation
-
- This file is part of libgcj.
-
-This software is copyrighted work licensed under the terms of the
-Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
-details. */
-
-package java.lang;
-
-/**
- * @author Tom Tromey <tromey@cygnus.com>
- * @date August 24, 1998
- */
-
-/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
- * "The Java Language Specification", ISBN 0-201-63451-1
- * plus online API docs for JDK 1.2 beta from http://www.javasoft.com.
- * Status: Believed complete to version 1.3, with caveats. We do not
- * implement the deprecated (and dangerous) stop, suspend, and resume
- * methods. Security implementation is not complete.
- */
-
-public class Thread implements Runnable
-{
- public final static int MAX_PRIORITY = 10;
- public final static int MIN_PRIORITY = 1;
- public final static int NORM_PRIORITY = 5;
-
- public static int activeCount ()
- {
- return currentThread().getThreadGroup().activeCount();
- }
-
- public final void checkAccess ()
- {
- SecurityManager s = System.getSecurityManager();
- if (s != null)
- s.checkAccess(this);
- }
-
- public native int countStackFrames ();
- public static native Thread currentThread ();
- public native void destroy ();
-
- public static void dumpStack ()
- {
- (new Exception ("Stack trace")).printStackTrace ();
- }
-
- public static int enumerate (Thread[] threads)
- {
- return currentThread().group.enumerate(threads);
- }
-
- public final String getName ()
- {
- return name;
- }
-
- public final int getPriority ()
- {
- return priority;
- }
-
- public final ThreadGroup getThreadGroup ()
- {
- return group;
- }
-
- public native void interrupt ();
-
- public static boolean interrupted ()
- {
- return currentThread().isInterrupted (true);
- }
-
- // Check the threads interrupted status. Note that this does not clear the
- // thread's interrupted status (per JDK 1.2 online API documentation).
- public boolean isInterrupted ()
- {
- return interrupt_flag;
- }
-
- public final boolean isAlive ()
- {
- return alive_flag;
- }
-
- public final boolean isDaemon ()
- {
- return daemon_flag;
- }
-
- public final void join () throws InterruptedException
- {
- join (0, 0);
- }
-
- public final void join (long timeout) throws InterruptedException
- {
- join (timeout, 0);
- }
-
- public final native void join (long timeout, int nanos)
- throws InterruptedException;
-
- public final native void resume ();
-
- private final native void finish_ ();
-
- // Check the thread's interrupted status. If clear_flag is true, the
- // thread's interrupted status is also cleared.
- private boolean isInterrupted (boolean clear_flag)
- {
- boolean r = interrupt_flag;
- if (clear_flag && r)
- {
- // Only clear the flag if we saw it as set. Otherwise this could
- // potentially cause us to miss an interrupt in a race condition,
- // because this method is not synchronized.
- interrupt_flag = false;
- }
- return r;
- }
-
- public void run ()
- {
- if (runnable != null)
- runnable.run();
- }
-
- public final void setDaemon (boolean status)
- {
- checkAccess ();
- if (isAlive ())
- throw new IllegalThreadStateException ();
- daemon_flag = status;
- }
-
- public synchronized ClassLoader getContextClassLoader()
- {
- if (context_class_loader == null)
- context_class_loader = ClassLoader.getSystemClassLoader ();
-
- SecurityManager s = System.getSecurityManager();
- // FIXME: we can't currently find the caller's class loader.
- ClassLoader callers = null;
- if (s != null && callers != null)
- {
- // See if the caller's class loader is the same as or an
- // ancestor of this thread's class loader.
- while (callers != null && callers != context_class_loader)
- {
- // FIXME: should use some internal version of getParent
- // that avoids security checks.
- callers = callers.getParent ();
- }
-
- if (callers != context_class_loader)
- s.checkPermission (new RuntimePermission ("getClassLoader"));
- }
-
- return context_class_loader;
- }
-
- public synchronized void setContextClassLoader(ClassLoader cl)
- {
- SecurityManager s = System.getSecurityManager ();
- if (s != null)
- s.checkPermission (new RuntimePermission ("setContextClassLoader"));
- context_class_loader = cl;
- }
-
- public final void setName (String n)
- {
- checkAccess ();
- // The Class Libraries book says ``threadName cannot be null''. I
- // take this to mean NullPointerException.
- if (n == null)
- throw new NullPointerException ();
- name = n;
- }
-
- public final native void setPriority (int newPriority);
-
- public static void sleep (long timeout) throws InterruptedException
- {
- sleep (timeout, 0);
- }
-
- public static native void sleep (long timeout, int nanos)
- throws InterruptedException;
- public native void start ();
-
- public final void stop ()
- {
- // Argument doesn't matter, because this is no longer
- // supported.
- stop (null);
- }
-
- public final native void stop (Throwable e);
- public final native void suspend ();
-
- private final native void initialize_native ();
-
- private final native static String gen_name ();
-
- public Thread (ThreadGroup g, Runnable r, String n)
- {
- this (currentThread (), g, r, n);
-
- // The Class Libraries book says ``threadName cannot be null''. I
- // take this to mean NullPointerException.
- if (n == null)
- throw new NullPointerException ();
- }
-
- private Thread (Thread current, ThreadGroup g, Runnable r, String n)
- {
- if (g == null)
- {
- // If CURRENT is null, then we are bootstrapping the first thread.
- // Use ThreadGroup.root, the main threadgroup.
- if (current == null)
- group = ThreadGroup.root;
- else
- group = current.getThreadGroup();
- }
- else
- group = g;
-
- data = null;
- interrupt_flag = false;
- alive_flag = false;
- startable_flag = true;
-
- if (current != null)
- {
- group.checkAccess();
-
- daemon_flag = current.isDaemon();
- int gmax = group.getMaxPriority();
- int pri = current.getPriority();
- priority = (gmax < pri ? gmax : pri);
- context_class_loader = current.context_class_loader;
- InheritableThreadLocal.newChildThread(this);
- }
- else
- {
- daemon_flag = false;
- priority = NORM_PRIORITY;
- }
-
- name = n;
- group.addThread(this);
- runnable = r;
-
- initialize_native ();
- }
-
- public Thread ()
- {
- this (null, null, gen_name ());
- }
-
- public Thread (Runnable r)
- {
- this (null, r, gen_name ());
- }
-
- public Thread (String n)
- {
- this (null, null, n);
- }
-
- public Thread (ThreadGroup g, Runnable r)
- {
- this (g, r, gen_name ());
- }
-
- public Thread (ThreadGroup g, String n)
- {
- this (g, null, n);
- }
-
- public Thread (Runnable r, String n)
- {
- this (null, r, n);
- }
-
- public String toString ()
- {
- return "Thread[" + name + "," + priority + "," +
- (group == null ? "" : group.getName()) + "]";
- }
-
- public static native void yield ();
-
- // Private data.
- private ThreadGroup group;
- private String name;
- private Runnable runnable;
- private int priority;
- private boolean daemon_flag;
- boolean interrupt_flag;
- private boolean alive_flag;
- private boolean startable_flag;
- private ClassLoader context_class_loader;
-
- // Our native data - points to an instance of struct natThread.
- private Object data;
-}
projects / msp430-gcc.git / blobdiff