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BEGIN LICENSE BLOCK ***** Version: EPL 1.0/GPL 2.0/LGPL 2.1 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. Copyright (C) 2002 Anders Bengtsson <ndrsbngtssn@yahoo.se> Copyright (C) 2002-2004 Jan Arne Petersen <jpetersen@uni-bonn.de> Copyright (C) 2004 Thomas E Enebo <enebo@acm.org> Copyright (C) 2004 Stefan Matthias Aust <sma@3plus4.de> Alternatively, the contents of this file may be used under the terms of either of the GNU General Public License Version 2 or later (the "GPL"), or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), in which case the provisions of the GPL or the LGPL are applicable instead of those above. If you wish to allow use of your version of this file only under the terms of either the GPL or the LGPL, and not to allow others to use your version of this file under the terms of the EPL, indicate your decision by deleting the provisions above and replace them with the notice and other provisions required by the GPL or the LGPL. If you do not delete the provisions above, a recipient may use your version of this file under the terms of any one of the EPL, the GPL or the LGPL. END LICENSE BLOCK ***
 
 package org.jruby;
 
 import static org.jruby.runtime.Visibility.*;
 import static org.jruby.CompatVersion.*;
GC (Garbage Collection) Module Note: Since we rely on Java's memory model we can't provide the kind of control over garbage collection that MRI provides. Also note that since all Ruby libraries make GC assumptions based on MRI's GC that we decided to no-op explicit collection through these APIs. You can use Java Integration in your libraries to force a Java GC (assuming you really want to).
 
 @JRubyModule(name="GC")
 public class RubyGC {
     private static volatile boolean gcDisabled = false;
     private static volatile boolean stress = false;
 
     public static RubyModule createGCModule(Ruby runtime) {
         RubyModule result = runtime.defineModule("GC");
         runtime.setGC(result);
         
         result.defineAnnotatedMethods(RubyGC.class);
         
         return result;        
     }
 
     @JRubyMethod(module = true, visibility = )
     public static IRubyObject start(ThreadContext contextIRubyObject recv) {
         return context.runtime.getNil();
     }
 
     @JRubyMethod
     public static IRubyObject garbage_collect(ThreadContext contextIRubyObject recv) {
         return context.runtime.getNil();
     }
 
     @JRubyMethod(module = true, visibility = )
     public static IRubyObject enable(ThreadContext contextIRubyObject recv) {
         Ruby runtime = context.runtime;
         emptyImplementationWarning(runtime."GC.enable");
         boolean old = ;
          = false;
         return runtime.newBoolean(old);
     }
 
     @JRubyMethod(module = true, visibility = )
     public static IRubyObject disable(ThreadContext contextIRubyObject recv) {
         Ruby runtime = context.runtime;
         emptyImplementationWarning(runtime."GC.disable");
         boolean old = ;
          = true;
         return runtime.newBoolean(old);
     }
 
     @JRubyMethod(module = true, visibility = )
     public static IRubyObject stress(ThreadContext contextIRubyObject recv) {
         return context.runtime.newBoolean();
     }
    @JRubyMethod(name = "stress=", module = true, visibility = )
    public static IRubyObject stress_set(ThreadContext contextIRubyObject recvIRubyObject arg) {
        Ruby runtime = context.runtime;
        emptyImplementationWarning(runtime."GC.stress=");
         = arg.isTrue();
        return runtime.newBoolean();
    }
    
    @JRubyMethod(module = true, visibility = , compat = )
    public static IRubyObject count(ThreadContext contextIRubyObject recv) {
        try {
            int count = 0;
            for (GarbageCollectorMXBean bean : ManagementFactory.getGarbageCollectorMXBeans()) {
                count += bean.getCollectionCount();
            }
            return context.runtime.newFixnum(count);
        } catch (Throwable t) {
            return RubyFixnum.minus_one(context.runtime);
        }
    }
    private static void emptyImplementationWarning(Ruby runtimeID idString name) {
        runtime.getWarnings().warnOnce(id,
                name + " does nothing on JRuby");
    }
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