1 /*
   2  * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 package jdk.vm.ci.meta;
  24 
  25 /**
  26  * Specifies the action that should be taken by the runtime in case a certain deoptimization is
  27  * triggered.
  28  */
  29 public enum DeoptimizationAction {
  30     /**
  31      * Do not invalidate the machine code. This is typically used when deoptimizing at a point where
  32      * it's highly likely nothing will change the likelihood of the deoptimization happening again.
  33      * For example, a compiled array allocation where the size is negative.
  34      */
  35     None(false),
  36 
  37     /**
  38      * Do not invalidate the machine code, but schedule a recompilation if this deoptimization is
  39      * triggered too often.
  40      */
  41     RecompileIfTooManyDeopts(true),
  42 
  43     /**
  44      * Invalidate the machine code and reset the profiling information.
  45      */
  46     InvalidateReprofile(true),
  47 
  48     /**
  49      * Invalidate the machine code and immediately schedule a recompilation. This is typically used
  50      * when deoptimizing to resolve an unresolved symbol in which case extra profiling is not
  51      * required to determine that the deoptimization will not re-occur.
  52      */
  53     InvalidateRecompile(true),
  54 
  55     /**
  56      * Invalidate the machine code and stop compiling the outermost method of this compilation.
  57      */
  58     InvalidateStopCompiling(true);
  59 
  60     private final boolean invalidatesCompilation;
  61 
  62     DeoptimizationAction(boolean invalidatesCompilation) {
  63         this.invalidatesCompilation = invalidatesCompilation;
  64     }
  65 
  66     public boolean doesInvalidateCompilation() {
  67         return invalidatesCompilation;
  68     }
  69 
  70 }