Package org.jruby.internal.runtime

Source Code of org.jruby.internal.runtime.RubyRunnable

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* The contents of this file are subject to the Eclipse Public
* License Version 1.0 (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.eclipse.org/legal/epl-v10.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
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* Copyright (C) 2007 Charles O Nutter <headius@headius.com>
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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package org.jruby.internal.runtime;

import org.jruby.Ruby;
import org.jruby.RubyModule;
import org.jruby.RubyProc;
import org.jruby.RubyThread;
import org.jruby.exceptions.JumpException;
import org.jruby.exceptions.MainExitException;
import org.jruby.exceptions.ThreadKill;
import org.jruby.runtime.Block;
import org.jruby.runtime.RubyEvent;
import org.jruby.runtime.ThreadContext;
import org.jruby.runtime.builtin.IRubyObject;
import org.jruby.util.log.Logger;
import org.jruby.util.log.LoggerFactory;

public class RubyRunnable implements ThreadedRunnable {

    private static final Logger LOG = LoggerFactory.getLogger("RubyRunnable");

    private final Ruby runtime;
    private final RubyProc proc;
    private final IRubyObject[] arguments;
    private final RubyThread rubyThread;
   
    private Thread javaThread;
    private static boolean warnedAboutTC = false;
   
    public RubyRunnable(RubyThread rubyThread, IRubyObject[] args, Block currentBlock) {
        this.rubyThread = rubyThread;
        this.runtime = rubyThread.getRuntime();
       
        proc = runtime.newProc(Block.Type.THREAD, currentBlock);
        this.arguments = args;
    }
   
    @Deprecated
    public RubyThread getRubyThread() {
        return rubyThread;
    }
   
    public Thread getJavaThread() {
        return javaThread;
    }
   
    @Override
    public void run() {
        javaThread = Thread.currentThread();
        ThreadContext context = runtime.getThreadService().registerNewThread(rubyThread);
       
        // set thread context JRuby classloader here, for Ruby-owned thread
        ClassLoader oldContextClassLoader = null;
        try {
            oldContextClassLoader = javaThread.getContextClassLoader();
            javaThread.setContextClassLoader(runtime.getJRubyClassLoader());
        } catch (SecurityException se) {
            // can't set TC classloader
            if (!warnedAboutTC && runtime.getInstanceConfig().isVerbose()) {
                warnedAboutTC = true;
                LOG.info("WARNING: Security restrictions disallowed setting context classloader for Ruby threads.");
            }
        }
       
        rubyThread.beforeStart();

        // uber-ThreadKill catcher, since it should always just mean "be dead"
        try {
            // Call the thread's code
            RubyModule frameClass = proc.getBlock().getFrame().getKlazz();
            try {
                if (runtime.hasEventHooks() && runtime.is2_0()) context.trace(RubyEvent.THREAD_BEGIN, null, frameClass);
                IRubyObject result = proc.call(context, arguments);
                if (runtime.hasEventHooks() && runtime.is2_0()) context.trace(RubyEvent.THREAD_END, null, frameClass);
                rubyThread.cleanTerminate(result);
            } catch (JumpException.ReturnJump rj) {
                rubyThread.exceptionRaised(rj.buildException(runtime));
            } catch (MainExitException mee) {
                // Someone called exit!, so we need to kill the main thread
                runtime.getThreadService().getMainThread().kill();
            } catch (Throwable t) {
                rubyThread.exceptionRaised(t);
            } finally {
                runtime.getThreadService().setCritical(false);
                rubyThread.dispose();

                // restore context classloader, in case we're using a thread pool
                try {
                    javaThread.setContextClassLoader(oldContextClassLoader);
                } catch (SecurityException se) {
                    // can't set TC classloader
                    if (!warnedAboutTC && runtime.getInstanceConfig().isVerbose()) {
                        warnedAboutTC = true;
                        LOG.info("WARNING: Security restrictions disallowed setting context classloader for Ruby threads.");
                    }
                }

                // dump profile, if any
                if (runtime.getInstanceConfig().isProfilingEntireRun()) {
                    runtime.printProfileData(context.getProfileCollection());
                }
            }
        } catch (ThreadKill tk) {
            // be dead
        }
    }
}
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