// Thread.java - Thread class.
-/* Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation
+/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation
This file is part of libgcj.
import gnu.gcj.RawData;
-/**
- * @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
+ * Status: Believed complete to version 1.4, with caveats. We do not
* implement the deprecated (and dangerous) stop, suspend, and resume
* methods. Security implementation is not complete.
*/
+/**
+ * Thread represents a single thread of execution in the VM. When an
+ * application VM starts up, it creates a non-daemon Thread which calls the
+ * main() method of a particular class. There may be other Threads running,
+ * such as the garbage collection thread.
+ *
+ * <p>Threads have names to identify them. These names are not necessarily
+ * unique. Every Thread has a priority, as well, which tells the VM which
+ * Threads should get more running time. New threads inherit the priority
+ * and daemon status of the parent thread, by default.
+ *
+ * <p>There are two methods of creating a Thread: you may subclass Thread and
+ * implement the <code>run()</code> method, at which point you may start the
+ * Thread by calling its <code>start()</code> method, or you may implement
+ * <code>Runnable</code> in the class you want to use and then call new
+ * <code>Thread(your_obj).start()</code>.
+ *
+ * <p>The virtual machine runs until all non-daemon threads have died (either
+ * by returning from the run() method as invoked by start(), or by throwing
+ * an uncaught exception); or until <code>System.exit</code> is called with
+ * adequate permissions.
+ *
+ * <p>It is unclear at what point a Thread should be added to a ThreadGroup,
+ * and at what point it should be removed. Should it be inserted when it
+ * starts, or when it is created? Should it be removed when it is suspended
+ * or interrupted? The only thing that is clear is that the Thread should be
+ * removed when it is stopped.
+ *
+ * @author Tom Tromey
+ * @author John Keiser
+ * @author Eric Blake <ebb9@email.byu.edu>
+ * @see Runnable
+ * @see Runtime#exit(int)
+ * @see #run()
+ * @see #start()
+ * @see ThreadLocal
+ * @since 1.0
+ * @status updated to 1.4
+ */
public class Thread implements Runnable
{
+ /** The maximum priority for a Thread. */
public final static int MAX_PRIORITY = 10;
+
+ /** The minimum priority for a Thread. */
public final static int MIN_PRIORITY = 1;
+
+ /** The priority a Thread gets by default. */
public final static int NORM_PRIORITY = 5;
+ /**
+ * Get the number of active threads in the current Thread's ThreadGroup.
+ * This implementation calls
+ * <code>currentThread().getThreadGroup().activeCount()</code>.
+ *
+ * @return the number of active threads in the current ThreadGroup
+ * @see ThreadGroup#activeCount()
+ */
public static int activeCount ()
{
return currentThread().getThreadGroup().activeCount();
}
+ /**
+ * Check whether the current Thread is allowed to modify this Thread. This
+ * passes the check on to <code>SecurityManager.checkAccess(this)</code>.
+ *
+ * @throws SecurityException if the current Thread cannot modify this Thread
+ * @see SecurityManager#checkAccess(Thread)
+ */
public final void checkAccess ()
{
SecurityManager s = System.getSecurityManager();
s.checkAccess(this);
}
+ /**
+ * Count the number of stack frames in this Thread. The Thread in question
+ * must be suspended when this occurs.
+ *
+ * @return the number of stack frames in this Thread
+ * @throws IllegalThreadStateException if this Thread is not suspended
+ * @deprecated pointless, since suspend is deprecated
+ */
public native int countStackFrames ();
+
+ /**
+ * Get the currently executing Thread.
+ *
+ * @return the currently executing Thread
+ */
public static native Thread currentThread ();
+
+ /**
+ * Originally intended to destroy this thread, this method was never
+ * implemented by Sun, and is hence a no-op.
+ */
public native void destroy ();
+ /**
+ * Print a stack trace of the current thread to stderr using the same
+ * format as Throwable's printStackTrace() method.
+ *
+ * @see Throwable#printStackTrace()
+ */
public static void dumpStack ()
{
(new Exception ("Stack trace")).printStackTrace ();
}
+ /**
+ * Copy every active thread in the current Thread's ThreadGroup into the
+ * array. Extra threads are silently ignored. This implementation calls
+ * <code>getThreadGroup().enumerate(array)</code>, which may have a
+ * security check, <code>checkAccess(group)</code>.
+ *
+ * @param array the array to place the Threads into
+ * @return the number of Threads placed into the array
+ * @throws NullPointerException if array is null
+ * @throws SecurityException if you cannot access the ThreadGroup
+ * @see ThreadGroup#enumerate(Thread[])
+ * @see #activeCount()
+ * @see SecurityManager#checkAccess(ThreadGroup)
+ */
public static int enumerate (Thread[] threads)
{
return currentThread().group.enumerate(threads);
}
-
+
+ /**
+ * Get this Thread's name.
+ *
+ * @return this Thread's name
+ */
public final String getName ()
{
return name;
}
+ /**
+ * Get this Thread's priority.
+ *
+ * @return the Thread's priority
+ */
public final int getPriority ()
{
return priority;
}
+ /**
+ * Get the ThreadGroup this Thread belongs to. If the thread has died, this
+ * returns null.
+ *
+ * @return this Thread's ThreadGroup
+ */
public final ThreadGroup getThreadGroup ()
{
return group;
}
+ /**
+ * Interrupt this Thread. First, there is a security check,
+ * <code>checkAccess</code>. Then, depending on the current state of the
+ * thread, various actions take place:
+ *
+ * <p>If the thread is waiting because of {@link #wait()},
+ * {@link #sleep(long)}, or {@link #join()}, its <i>interrupt status</i>
+ * will be cleared, and an InterruptedException will be thrown. Notice that
+ * this case is only possible if an external thread called interrupt().
+ *
+ * <p>If the thread is blocked in an interruptible I/O operation, in
+ * {@link java.nio.channels.InterruptibleChannel}, the <i>interrupt
+ * status</i> will be set, and ClosedByInterruptException will be thrown.
+ *
+ * <p>If the thread is blocked on a {@link java.nio.channels.Selector}, the
+ * <i>interrupt status</i> will be set, and the selection will return, with
+ * a possible non-zero value, as though by the wakeup() method.
+ *
+ * <p>Otherwise, the interrupt status will be set.
+ *
+ * @throws SecurityException if you cannot modify this Thread
+ */
public native void interrupt ();
+ /**
+ * Determine whether the current Thread has been interrupted, and clear
+ * the <i>interrupted status</i> in the process.
+ *
+ * @return whether the current Thread has been interrupted
+ * @see #isInterrupted()
+ */
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).
+ /**
+ * Determine whether the given Thread has been interrupted, but leave
+ * the <i>interrupted status</i> alone in the process.
+ *
+ * @return whether the current Thread has been interrupted
+ * @see #interrupted()
+ */
public boolean isInterrupted ()
{
return interrupt_flag;
}
+ /**
+ * Determine whether this Thread is alive. A thread which is alive has
+ * started and not yet died.
+ *
+ * @return whether this Thread is alive
+ */
public final boolean isAlive ()
{
return alive_flag;
}
+ /**
+ * Tell whether this is a daemon Thread or not.
+ *
+ * @return whether this is a daemon Thread or not
+ * @see #setDaemon(boolean)
+ */
public final boolean isDaemon ()
{
return daemon_flag;
}
+ /**
+ * Wait forever for the Thread in question to die.
+ *
+ * @throws InterruptedException if the Thread is interrupted; it's
+ * <i>interrupted status</i> will be cleared
+ */
public final void join () throws InterruptedException
{
join (0, 0);
}
+ /**
+ * Wait the specified amount of time for the Thread in question to die.
+ *
+ * @param ms the number of milliseconds to wait, or 0 for forever
+ * @throws InterruptedException if the Thread is interrupted; it's
+ * <i>interrupted status</i> will be cleared
+ */
public final void join (long timeout) throws InterruptedException
{
join (timeout, 0);
}
+ /**
+ * Wait the specified amount of time for the Thread in question to die.
+ *
+ * <p>Note that 1,000,000 nanoseconds == 1 millisecond, but most VMs do
+ * not offer that fine a grain of timing resolution. Besides, there is
+ * no guarantee that this thread can start up immediately when time expires,
+ * because some other thread may be active. So don't expect real-time
+ * performance.
+ *
+ * @param ms the number of milliseconds to wait, or 0 for forever
+ * @param ns the number of extra nanoseconds to sleep (0-999999)
+ * @throws InterruptedException if the Thread is interrupted; it's
+ * <i>interrupted status</i> will be cleared
+ * @throws IllegalArgumentException if ns is invalid
+ * @XXX A ThreadListener would be nice, to make this efficient.
+ */
public final native void join (long timeout, int nanos)
throws InterruptedException;
+ /**
+ * Resume a suspended thread.
+ *
+ * @see #resume()
+ */
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.
+ /**
+ * Determine whether the given Thread has been interrupted, but leave
+ * the <i>interrupted status</i> alone in the process.
+ *
+ * @return whether the current Thread has been interrupted
+ * @see #interrupted()
+ */
private boolean isInterrupted (boolean clear_flag)
{
boolean r = interrupt_flag;
return r;
}
+ /**
+ * The method of Thread that will be run if there is no Runnable object
+ * associated with the Thread. Thread's implementation does nothing at all.
+ *
+ * @see #start()
+ * @see #Thread(ThreadGroup, Runnable, String)
+ */
public void run ()
{
if (runnable != null)
runnable.run();
}
+ /**
+ * Set the daemon status of this Thread. If this is a daemon Thread, then
+ * the VM may exit even if it is still running. This may only be called
+ * before the Thread starts running. There may be a security check,
+ * <code>checkAccess</code>.
+ *
+ * @param daemon whether this should be a daemon thread or not
+ * @throws SecurityException if you cannot modify this Thread
+ * @throws IllegalThreadStateException if the Thread is active
+ * @see #isDaemon()
+ * @see #checkAccess()
+ */
public final void setDaemon (boolean status)
{
checkAccess ();
daemon_flag = status;
}
+ /**
+ * Returns the context classloader of this Thread. The context
+ * classloader can be used by code that want to load classes depending
+ * on the current thread. Normally classes are loaded depending on
+ * the classloader of the current class. There may be a security check
+ * for <code>RuntimePermission("getClassLoader")</code> if the caller's
+ * class loader is not null or an ancestor of this thread's context class
+ * loader.
+ *
+ * @return the context class loader
+ * @throws SecurityException when permission is denied
+ * @see setContextClassLoader(ClassLoader)
+ * @since 1.2
+ */
public synchronized ClassLoader getContextClassLoader()
{
if (context_class_loader == null)
return context_class_loader;
}
+ /**
+ * Returns the context classloader of this Thread. The context
+ * classloader can be used by code that want to load classes depending
+ * on the current thread. Normally classes are loaded depending on
+ * the classloader of the current class. There may be a security check
+ * for <code>RuntimePermission("getClassLoader")</code> if the caller's
+ * class loader is not null or an ancestor of this thread's context class
+ * loader.
+ *
+ * @return the context class loader
+ * @throws SecurityException when permission is denied
+ * @see setContextClassLoader(ClassLoader)
+ * @since 1.2
+ */
public synchronized void setContextClassLoader(ClassLoader cl)
{
SecurityManager s = System.getSecurityManager ();
context_class_loader = cl;
}
+ /**
+ * Set this Thread's name. There may be a security check,
+ * <code>checkAccess</code>.
+ *
+ * @param name the new name for this Thread
+ * @throws NullPointerException if name is null
+ * @throws SecurityException if you cannot modify this Thread
+ */
public final void setName (String n)
{
checkAccess ();
name = n;
}
+ /**
+ * Set this Thread's priority. There may be a security check,
+ * <code>checkAccess</code>, then the priority is set to the smaller of
+ * priority and the ThreadGroup maximum priority.
+ *
+ * @param priority the new priority for this Thread
+ * @throws IllegalArgumentException if priority exceeds MIN_PRIORITY or
+ * MAX_PRIORITY
+ * @throws SecurityException if you cannot modify this Thread
+ * @see #getPriority()
+ * @see #checkAccess()
+ * @see ThreadGroup#getMaxPriority()
+ * @see #MIN_PRIORITY
+ * @see #MAX_PRIORITY
+ */
public final native void setPriority (int newPriority);
+ /**
+ * Suspend the current Thread's execution for the specified amount of
+ * time. The Thread will not lose any locks it has during this time. There
+ * are no guarantees which thread will be next to run, but most VMs will
+ * choose the highest priority thread that has been waiting longest.
+ *
+ * @param ms the number of milliseconds to sleep, or 0 for forever
+ * @throws InterruptedException if the Thread is interrupted; it's
+ * <i>interrupted status</i> will be cleared
+ * @see #notify()
+ * @see #wait(long)
+ */
public static void sleep (long timeout) throws InterruptedException
{
sleep (timeout, 0);
}
+ /**
+ * Suspend the current Thread's execution for the specified amount of
+ * time. The Thread will not lose any locks it has during this time. There
+ * are no guarantees which thread will be next to run, but most VMs will
+ * choose the highest priority thread that has been waiting longest.
+ *
+ * <p>Note that 1,000,000 nanoseconds == 1 millisecond, but most VMs do
+ * not offer that fine a grain of timing resolution. Besides, there is
+ * no guarantee that this thread can start up immediately when time expires,
+ * because some other thread may be active. So don't expect real-time
+ * performance.
+ *
+ * @param ms the number of milliseconds to sleep, or 0 for forever
+ * @param ns the number of extra nanoseconds to sleep (0-999999)
+ * @throws InterruptedException if the Thread is interrupted; it's
+ * <i>interrupted status</i> will be cleared
+ * @throws IllegalArgumentException if ns is invalid
+ * @see #notify()
+ * @see #wait(long, int)
+ */
public static native void sleep (long timeout, int nanos)
throws InterruptedException;
+
+ /**
+ * Start this Thread, calling the run() method of the Runnable this Thread
+ * was created with, or else the run() method of the Thread itself. This
+ * is the only way to start a new thread; calling run by yourself will just
+ * stay in the same thread. The virtual machine will remove the thread from
+ * its thread group when the run() method completes.
+ *
+ * @throws IllegalThreadStateException if the thread has already started
+ * @see #run()
+ */
public native void start ();
+ /**
+ * Cause this Thread to stop abnormally because of the throw of a ThreadDeath
+ * error. If you stop a Thread that has not yet started, it will stop
+ * immediately when it is actually started.
+ *
+ * <p>This is inherently unsafe, as it can interrupt synchronized blocks and
+ * leave data in bad states. Hence, there is a security check:
+ * <code>checkAccess(this)</code>, plus another one if the current thread
+ * is not this: <code>RuntimePermission("stopThread")</code>. If you must
+ * catch a ThreadDeath, be sure to rethrow it after you have cleaned up.
+ * ThreadDeath is the only exception which does not print a stack trace when
+ * the thread dies.
+ *
+ * @throws SecurityException if you cannot stop the Thread
+ * @see #interrupt()
+ * @see #checkAccess()
+ * @see #start()
+ * @see ThreadDeath
+ * @see ThreadGroup#uncaughtException(Thread, Throwable)
+ * @see SecurityManager#checkAccess(Thread)
+ * @see SecurityManager#checkPermission(Permission)
+ * @deprecated unsafe operation, try not to use
+ */
public final void stop ()
{
// Argument doesn't matter, because this is no longer
stop (null);
}
+ /**
+ * Cause this Thread to stop abnormally and throw the specified exception.
+ * If you stop a Thread that has not yet started, it will stop immediately
+ * when it is actually started. <b>WARNING</b>This bypasses Java security,
+ * and can throw a checked exception which the call stack is unprepared to
+ * handle. Do not abuse this power.
+ *
+ * <p>This is inherently unsafe, as it can interrupt synchronized blocks and
+ * leave data in bad states. Hence, there is a security check:
+ * <code>checkAccess(this)</code>, plus another one if the current thread
+ * is not this: <code>RuntimePermission("stopThread")</code>. If you must
+ * catch a ThreadDeath, be sure to rethrow it after you have cleaned up.
+ * ThreadDeath is the only exception which does not print a stack trace when
+ * the thread dies.
+ *
+ * @param t the Throwable to throw when the Thread dies
+ * @throws SecurityException if you cannot stop the Thread
+ * @throws NullPointerException in the calling thread, if t is null
+ * @see #interrupt()
+ * @see #checkAccess()
+ * @see #start()
+ * @see ThreadDeath
+ * @see ThreadGroup#uncaughtException(Thread, Throwable)
+ * @see SecurityManager#checkAccess(Thread)
+ * @see SecurityManager#checkPermission(Permission)
+ * @deprecated unsafe operation, try not to use
+ */
public final native void stop (Throwable e);
+
+ /**
+ * Suspend this Thread. It will not come back, ever, unless it is resumed.
+ *
+ * <p>This is inherently unsafe, as the suspended thread still holds locks,
+ * and can potentially deadlock your program. Hence, there is a security
+ * check: <code>checkAccess</code>.
+ *
+ * @throws SecurityException if you cannot suspend the Thread
+ * @see #checkAccess()
+ * @see #resume()
+ * @deprecated unsafe operation, try not to use
+ */
public final native void suspend ();
private final native void initialize_native ();
private final native static String gen_name ();
+ /**
+ * Allocate a new Thread object, with the specified ThreadGroup and name, and
+ * using the specified Runnable object's <code>run()</code> method to
+ * execute. If the Runnable object is null, <code>this</code> (which is
+ * a Runnable) is used instead.
+ *
+ * <p>If the ThreadGroup is null, the security manager is checked. If a
+ * manager exists and returns a non-null object for
+ * <code>getThreadGroup</code>, that group is used; otherwise the group
+ * of the creating thread is used. Note that the security manager calls
+ * <code>checkAccess</code> if the ThreadGroup is not null.
+ *
+ * <p>The new Thread will inherit its creator's priority and daemon status.
+ * These can be changed with <code>setPriority</code> and
+ * <code>setDaemon</code>.
+ *
+ * @param group the group to put the Thread into
+ * @param target the Runnable object to execute
+ * @param name the name for the Thread
+ * @throws NullPointerException if name is null
+ * @throws SecurityException if this thread cannot access <code>group</code>
+ * @throws IllegalThreadStateException if group is destroyed
+ * @see Runnable#run()
+ * @see #run()
+ * @see #setDaemon(boolean)
+ * @see #setPriority(int)
+ * @see SecurityManager#checkAccess(ThreadGroup)
+ * @see ThreadGroup#checkAccess()
+ */
public Thread (ThreadGroup g, Runnable r, String n)
{
this (currentThread (), g, r, n);
throw new NullPointerException ();
}
+ /**
+ * Allocate a new Thread object, as if by
+ * <code>Thread(group, null, name)</code>, and give it the specified stack
+ * size, in bytes. The stack size is <b>highly platform independent</b>,
+ * and the virtual machine is free to round up or down, or ignore it
+ * completely. A higher value might let you go longer before a
+ * <code>StackOverflowError</code>, while a lower value might let you go
+ * longer before an <code>OutOfMemoryError</code>. Or, it may do absolutely
+ * nothing! So be careful, and expect to need to tune this value if your
+ * virtual machine even supports it.
+ *
+ * @param group the group to put the Thread into
+ * @param target the Runnable object to execute
+ * @param name the name for the Thread
+ * @param size the stack size, in bytes; 0 to be ignored
+ * @throws NullPointerException if name is null
+ * @throws SecurityException if this thread cannot access <code>group</code>
+ * @throws IllegalThreadStateException if group is destroyed
+ * @since 1.4
+ */
+ public Thread (ThreadGroup g, Runnable r, String n, long size)
+ {
+ // Just ignore stackSize for now.
+ 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)
initialize_native ();
}
+ /**
+ * Allocates a new <code>Thread</code> object. This constructor has
+ * the same effect as <code>Thread(null, null,</code>
+ * <i>gname</i><code>)</code>, where <b><i>gname</i></b> is
+ * a newly generated name. Automatically generated names are of the
+ * form <code>"Thread-"+</code><i>n</i>, where <i>n</i> is an integer.
+ * <p>
+ * Threads created this way must have overridden their
+ * <code>run()</code> method to actually do anything. An example
+ * illustrating this method being used follows:
+ * <p><blockquote><pre>
+ * import java.lang.*;
+ *
+ * class plain01 implements Runnable {
+ * String name;
+ * plain01() {
+ * name = null;
+ * }
+ * plain01(String s) {
+ * name = s;
+ * }
+ * public void run() {
+ * if (name == null)
+ * System.out.println("A new thread created");
+ * else
+ * System.out.println("A new thread with name " + name +
+ * " created");
+ * }
+ * }
+ * class threadtest01 {
+ * public static void main(String args[] ) {
+ * int failed = 0 ;
+ *
+ * <b>Thread t1 = new Thread();</b>
+ * if (t1 != null)
+ * System.out.println("new Thread() succeed");
+ * else {
+ * System.out.println("new Thread() failed");
+ * failed++;
+ * }
+ * }
+ * }
+ * </pre></blockquote>
+ *
+ * @see java.lang.Thread#Thread(java.lang.ThreadGroup,
+ * java.lang.Runnable, java.lang.String)
+ */
public Thread ()
{
this (null, null, gen_name ());
}
+ /**
+ * Allocates a new <code>Thread</code> object. This constructor has
+ * the same effect as <code>Thread(null, target,</code>
+ * <i>gname</i><code>)</code>, where <i>gname</i> is
+ * a newly generated name. Automatically generated names are of the
+ * form <code>"Thread-"+</code><i>n</i>, where <i>n</i> is an integer.
+ *
+ * @param target the object whose <code>run</code> method is called.
+ * @see java.lang.Thread#Thread(java.lang.ThreadGroup,
+ * java.lang.Runnable, java.lang.String)
+ */
public Thread (Runnable r)
{
this (null, r, gen_name ());
}
+ /**
+ * Allocates a new <code>Thread</code> object. This constructor has
+ * the same effect as <code>Thread(null, null, name)</code>.
+ *
+ * @param name the name of the new thread.
+ * @see java.lang.Thread#Thread(java.lang.ThreadGroup,
+ * java.lang.Runnable, java.lang.String)
+ */
public Thread (String n)
{
this (null, null, n);
}
+ /**
+ * Allocates a new <code>Thread</code> object. This constructor has
+ * the same effect as <code>Thread(group, target,</code>
+ * <i>gname</i><code>)</code>, where <i>gname</i> is
+ * a newly generated name. Automatically generated names are of the
+ * form <code>"Thread-"+</code><i>n</i>, where <i>n</i> is an integer.
+ *
+ * @param group the thread group.
+ * @param target the object whose <code>run</code> method is called.
+ * @exception SecurityException if the current thread cannot create a
+ * thread in the specified thread group.
+ * @see java.lang.Thread#Thread(java.lang.ThreadGroup,
+ * java.lang.Runnable, java.lang.String)
+ */
public Thread (ThreadGroup g, Runnable r)
{
this (g, r, gen_name ());
}
+ /**
+ * Allocates a new <code>Thread</code> object. This constructor has
+ * the same effect as <code>Thread(group, null, name)</code>
+ *
+ * @param group the thread group.
+ * @param name the name of the new thread.
+ * @exception SecurityException if the current thread cannot create a
+ * thread in the specified thread group.
+ * @see java.lang.Thread#Thread(java.lang.ThreadGroup,
+ * java.lang.Runnable, java.lang.String)
+ */
public Thread (ThreadGroup g, String n)
{
this (g, null, n);
}
+ /**
+ * Allocates a new <code>Thread</code> object. This constructor has
+ * the same effect as <code>Thread(null, target, name)</code>.
+ *
+ * @param target the object whose <code>run</code> method is called.
+ * @param name the name of the new thread.
+ * @see java.lang.Thread#Thread(java.lang.ThreadGroup,
+ * java.lang.Runnable, java.lang.String)
+ */
public Thread (Runnable r, String n)
{
this (null, r, n);
}
+ /**
+ * Returns a string representation of this thread, including the
+ * thread's name, priority, and thread group.
+ *
+ * @return a string representation of this thread.
+ */
public String toString ()
{
return "Thread[" + name + "," + priority + "," +
(group == null ? "" : group.getName()) + "]";
}
+ /**
+ * Causes the currently executing thread object to temporarily pause
+ * and allow other threads to execute.
+ */
public static native void yield ();
// Private data.
projects / platform / upstream / gcc.git / commitdiff