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src/java.base/share/classes/java/lang/StackFrameInfo.java

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rev 51958 : 8211122: Reduce the number of internal classes made accessible to jdk.unsupported
Reviewed-by: alanb, dfuchs, kvn
   1 /*
   2  * Copyright (c) 2015, 2017, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package java.lang;
  26 
  27 import jdk.internal.misc.JavaLangInvokeAccess;
  28 import jdk.internal.misc.SharedSecrets;
  29 
  30 import static java.lang.StackWalker.Option.*;
  31 import java.lang.StackWalker.StackFrame;
  32 import java.lang.invoke.MethodType;
  33 
  34 class StackFrameInfo implements StackFrame {
  35     private final byte RETAIN_CLASS_REF = 0x01;
  36 
  37     private final static JavaLangInvokeAccess JLIA =
  38         SharedSecrets.getJavaLangInvokeAccess();
  39 
  40     private final byte flags;
  41     private final Object memberName;
  42     private final short bci;
  43     private volatile StackTraceElement ste;
  44 
  45     /*
  46      * Create StackFrameInfo for StackFrameTraverser and LiveStackFrameTraverser
  47      * to use
  48      */
  49     StackFrameInfo(StackWalker walker) {
  50         this.flags = walker.retainClassRef ? RETAIN_CLASS_REF : 0;


   1 /*
   2  * Copyright (c) 2015, 2018, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package java.lang;
  26 
  27 import jdk.internal.access.JavaLangInvokeAccess;
  28 import jdk.internal.access.SharedSecrets;
  29 

  30 import java.lang.StackWalker.StackFrame;
  31 import java.lang.invoke.MethodType;
  32 
  33 class StackFrameInfo implements StackFrame {
  34     private final byte RETAIN_CLASS_REF = 0x01;
  35 
  36     private final static JavaLangInvokeAccess JLIA =
  37         SharedSecrets.getJavaLangInvokeAccess();
  38 
  39     private final byte flags;
  40     private final Object memberName;
  41     private final short bci;
  42     private volatile StackTraceElement ste;
  43 
  44     /*
  45      * Create StackFrameInfo for StackFrameTraverser and LiveStackFrameTraverser
  46      * to use
  47      */
  48     StackFrameInfo(StackWalker walker) {
  49         this.flags = walker.retainClassRef ? RETAIN_CLASS_REF : 0;


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