Examples of java.util.concurrent.ThreadFactory.newThread()

Class java.util.concurrent.ThreadFactory

Examples of java.util.concurrent.ThreadFactory.newThread()

java.util.concurrent.ThreadFactory.newThread()
Constructs a new {@code Thread}. Implementations may also initialize priority, name, daemon status, {@code ThreadGroup}, etc. @param r a runnable to be executed by new thread instance @return constructed thread, or {@code null} if the request tocreate a thread is rejected

  public static ThreadFactory newDaemonThreadFactory(final String prefix) {
    final ThreadFactory namedFactory = getNamedThreadFactory(prefix);
    return new ThreadFactory() {
      @Override
      public Thread newThread(Runnable r) {
        Thread t = namedFactory.newThread(r);
        if (!t.isDaemon()) {
          t.setDaemon(true);
        }
        if (t.getPriority() != Thread.NORM_PRIORITY) {
          t.setPriority(Thread.NORM_PRIORITY);

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    public void testNewThreadNamingPattern() {
        final ThreadFactory wrapped = EasyMock.createMock(ThreadFactory.class);
        final Runnable r = EasyMock.createMock(Runnable.class);
        final int count = 12;
        for (int i = 0; i < count; i++) {
            EasyMock.expect(wrapped.newThread(r)).andReturn(new Thread());
        }
        EasyMock.replay(wrapped, r);
        final BasicThreadFactory factory = builder.wrappedFactory(wrapped)
                .namingPattern(PATTERN).build();
        for (int i = 0; i < count; i++) {

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    public void testNewThreadNoNamingPattern() {
        final ThreadFactory wrapped = EasyMock.createMock(ThreadFactory.class);
        final Runnable r = EasyMock.createMock(Runnable.class);
        final String name = "unchangedThreadName";
        final Thread t = new Thread(name);
        EasyMock.expect(wrapped.newThread(r)).andReturn(t);
        EasyMock.replay(wrapped, r);
        final BasicThreadFactory factory = builder.wrappedFactory(wrapped).build();
        assertSame("Wrong thread", t, factory.newThread(r));
        assertEquals("Name was changed", name, t.getName());
        EasyMock.verify(wrapped, r);

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     */
    private void checkDaemonFlag(final boolean flag) {
        final ThreadFactory wrapped = EasyMock.createMock(ThreadFactory.class);
        final Runnable r = EasyMock.createMock(Runnable.class);
        final Thread t = new Thread();
        EasyMock.expect(wrapped.newThread(r)).andReturn(t);
        EasyMock.replay(wrapped, r);
        final BasicThreadFactory factory = builder.wrappedFactory(wrapped).daemon(
                flag).build();
        assertSame("Wrong thread", t, factory.newThread(r));
        assertTrue("Wrong daemon flag", flag == t.isDaemon());

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        final Runnable r1 = EasyMock.createMock(Runnable.class);
        final Runnable r2 = EasyMock.createMock(Runnable.class);
        final Thread t1 = new Thread();
        final Thread t2 = new Thread();
        t1.setDaemon(true);
        EasyMock.expect(wrapped.newThread(r1)).andReturn(t1);
        EasyMock.expect(wrapped.newThread(r2)).andReturn(t2);
        EasyMock.replay(wrapped, r1, r2);
        final BasicThreadFactory factory = builder.wrappedFactory(wrapped).build();
        assertSame("Wrong thread 1", t1, factory.newThread(r1));
        assertTrue("No daemon thread", t1.isDaemon());

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        final Runnable r2 = EasyMock.createMock(Runnable.class);
        final Thread t1 = new Thread();
        final Thread t2 = new Thread();
        t1.setDaemon(true);
        EasyMock.expect(wrapped.newThread(r1)).andReturn(t1);
        EasyMock.expect(wrapped.newThread(r2)).andReturn(t2);
        EasyMock.replay(wrapped, r1, r2);
        final BasicThreadFactory factory = builder.wrappedFactory(wrapped).build();
        assertSame("Wrong thread 1", t1, factory.newThread(r1));
        assertTrue("No daemon thread", t1.isDaemon());
        assertSame("Wrong thread 2", t2, factory.newThread(r2));

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    @Test
    public void testNewThreadPriority() {
        final ThreadFactory wrapped = EasyMock.createMock(ThreadFactory.class);
        final Runnable r = EasyMock.createMock(Runnable.class);
        final Thread t = new Thread();
        EasyMock.expect(wrapped.newThread(r)).andReturn(t);
        EasyMock.replay(wrapped, r);
        final int priority = Thread.NORM_PRIORITY + 1;
        final BasicThreadFactory factory = builder.wrappedFactory(wrapped).priority(
                priority).build();
        assertSame("Wrong thread", t, factory.newThread(r));

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        final ThreadFactory wrapped = EasyMock.createMock(ThreadFactory.class);
        final Runnable r = EasyMock.createMock(Runnable.class);
        final int orgPriority = Thread.NORM_PRIORITY + 1;
        final Thread t = new Thread();
        t.setPriority(orgPriority);
        EasyMock.expect(wrapped.newThread(r)).andReturn(t);
        EasyMock.replay(wrapped, r);
        final BasicThreadFactory factory = builder.wrappedFactory(wrapped).build();
        assertSame("Wrong thread", t, factory.newThread(r));
        assertEquals("Wrong priority", orgPriority, t.getPriority());
        EasyMock.verify(wrapped, r);

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        final ThreadFactory wrapped = EasyMock.createMock(ThreadFactory.class);
        final Runnable r = EasyMock.createMock(Runnable.class);
        final Thread.UncaughtExceptionHandler handler = EasyMock
                .createMock(Thread.UncaughtExceptionHandler.class);
        final Thread t = new Thread();
        EasyMock.expect(wrapped.newThread(r)).andReturn(t);
        EasyMock.replay(wrapped, r, handler);
        final BasicThreadFactory factory = builder.wrappedFactory(wrapped)
                .uncaughtExceptionHandler(handler).build();
        assertSame("Wrong thread", t, factory.newThread(r));
        assertEquals("Wrong exception handler", handler, t

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        final Runnable r = EasyMock.createMock(Runnable.class);
        final Thread.UncaughtExceptionHandler handler = EasyMock
                .createMock(Thread.UncaughtExceptionHandler.class);
        final Thread t = new Thread();
        t.setUncaughtExceptionHandler(handler);
        EasyMock.expect(wrapped.newThread(r)).andReturn(t);
        EasyMock.replay(wrapped, r, handler);
        final BasicThreadFactory factory = builder.wrappedFactory(wrapped).build();
        assertSame("Wrong thread", t, factory.newThread(r));
        assertEquals("Wrong exception handler", handler, t
                .getUncaughtExceptionHandler());

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