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src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/memory/FileMapInfo.java

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   1 /*
   2  * Copyright (c) 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.
   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  *


  53         }
  54       });
  55   }
  56 
  57   private static void initialize(TypeDataBase db) {
  58     // FileMapInfo
  59     Type type = db.lookupType("FileMapInfo");
  60     AddressField currentInfoField = type.getAddressField("_current_info");
  61     long headerFieldOffset = type.getField("_header").getOffset();
  62     Address headerAddress = currentInfoField.getValue().addOffsetTo(headerFieldOffset);
  63     headerValue = headerAddress.getAddressAt(0);
  64 
  65     // FileMapHeader
  66     type = db.lookupType("FileMapHeader");
  67     AddressField spaceField = type.getAddressField("_space[0]");
  68     Address spaceValue = headerValue.addOffsetTo(type.getField("_space[0]").getOffset());
  69     mdSpaceValue = spaceValue.addOffsetTo(3 * spaceField.getSize());
  70 
  71     // SpaceInfo
  72     type = db.lookupType("CDSFileMapRegion");
  73     long mdRegionBaseAddressOffset = type.getField("_addr._base").getOffset();
  74     mdRegionBaseAddress = (mdSpaceValue.addOffsetTo(mdRegionBaseAddressOffset)).getAddressAt(0);
  75     long mdRegionSizeOffset = type.getField("_used").getOffset();
  76     long mdRegionSize = (mdSpaceValue.addOffsetTo(mdRegionSizeOffset)).getAddressAt(0).asLongValue();
  77     mdRegionEndAddress = mdRegionBaseAddress.addOffsetTo(mdRegionSize);
  78 
  79     populateMetadataTypeArray(db);
  80   }
  81 
  82   private static void populateMetadataTypeArray(TypeDataBase db) {
  83     metadataTypeArray = new Type[8];
  84 
  85     metadataTypeArray[0] = db.lookupType("ConstantPool");
  86     metadataTypeArray[1] = db.lookupType("InstanceKlass");
  87     metadataTypeArray[2] = db.lookupType("InstanceClassLoaderKlass");
  88     metadataTypeArray[3] = db.lookupType("InstanceMirrorKlass");
  89     metadataTypeArray[4] = db.lookupType("InstanceRefKlass");
  90     metadataTypeArray[5] = db.lookupType("Method");
  91     metadataTypeArray[6] = db.lookupType("ObjArrayKlass");
  92     metadataTypeArray[7] = db.lookupType("TypeArrayKlass");
  93   }


   1 /*
   2  * Copyright (c) 2018, 2019, 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  *


  53         }
  54       });
  55   }
  56 
  57   private static void initialize(TypeDataBase db) {
  58     // FileMapInfo
  59     Type type = db.lookupType("FileMapInfo");
  60     AddressField currentInfoField = type.getAddressField("_current_info");
  61     long headerFieldOffset = type.getField("_header").getOffset();
  62     Address headerAddress = currentInfoField.getValue().addOffsetTo(headerFieldOffset);
  63     headerValue = headerAddress.getAddressAt(0);
  64 
  65     // FileMapHeader
  66     type = db.lookupType("FileMapHeader");
  67     AddressField spaceField = type.getAddressField("_space[0]");
  68     Address spaceValue = headerValue.addOffsetTo(type.getField("_space[0]").getOffset());
  69     mdSpaceValue = spaceValue.addOffsetTo(3 * spaceField.getSize());
  70 
  71     // SpaceInfo
  72     type = db.lookupType("CDSFileMapRegion");
  73     long mdRegionBaseAddressOffset = type.getField("_mapped_base").getOffset();
  74     mdRegionBaseAddress = (mdSpaceValue.addOffsetTo(mdRegionBaseAddressOffset)).getAddressAt(0);
  75     long mdRegionSizeOffset = type.getField("_used").getOffset();
  76     long mdRegionSize = (mdSpaceValue.addOffsetTo(mdRegionSizeOffset)).getAddressAt(0).asLongValue();
  77     mdRegionEndAddress = mdRegionBaseAddress.addOffsetTo(mdRegionSize);
  78 
  79     populateMetadataTypeArray(db);
  80   }
  81 
  82   private static void populateMetadataTypeArray(TypeDataBase db) {
  83     metadataTypeArray = new Type[8];
  84 
  85     metadataTypeArray[0] = db.lookupType("ConstantPool");
  86     metadataTypeArray[1] = db.lookupType("InstanceKlass");
  87     metadataTypeArray[2] = db.lookupType("InstanceClassLoaderKlass");
  88     metadataTypeArray[3] = db.lookupType("InstanceMirrorKlass");
  89     metadataTypeArray[4] = db.lookupType("InstanceRefKlass");
  90     metadataTypeArray[5] = db.lookupType("Method");
  91     metadataTypeArray[6] = db.lookupType("ObjArrayKlass");
  92     metadataTypeArray[7] = db.lookupType("TypeArrayKlass");
  93   }


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