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src/hotspot/share/classfile/classLoaderStats.hpp

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rev 58565 : 8238358: Implementation of JEP 371: Hidden Classes
Reviewed-by: duke
Contributed-by: mandy.chung@oracle.com, lois.foltan@oracle.com, david.holmes@oracle.com, harold.seigel@oracle.com, serguei.spitsyn@oracle.com, alex.buckley@oracle.com, jamsheed.c.m@oracle.com
   1 /*
   2  * Copyright (c) 2014, 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  *


  64                         "monitor", NULL};
  65     return p;
  66   }
  67 };
  68 
  69 
  70 class ClassLoaderStats : public ResourceObj {
  71 public:
  72   ClassLoaderData*  _cld;
  73   oop               _class_loader;
  74   oop               _parent;
  75 
  76   size_t            _chunk_sz;
  77   size_t            _block_sz;
  78   uintx             _classes_count;
  79 
  80   size_t            _anon_chunk_sz;
  81   size_t            _anon_block_sz;
  82   uintx             _anon_classes_count;
  83 




  84   ClassLoaderStats() :
  85     _cld(0),
  86     _class_loader(0),
  87     _parent(0),
  88     _chunk_sz(0),
  89     _block_sz(0),
  90     _classes_count(0),
  91     _anon_chunk_sz(0),
  92     _anon_block_sz(0),
  93     _anon_classes_count(0) {



  94   }
  95 };
  96 
  97 
  98 class ClassLoaderStatsClosure : public CLDClosure {
  99 protected:
 100   static bool oop_equals(oop const& s1, oop const& s2) {
 101     return s1 == s2;
 102   }
 103 
 104   static unsigned oop_hash(oop const& s1) {
 105     unsigned hash = (unsigned)((uintptr_t)&s1);
 106     return hash ^ (hash >> LogMinObjAlignment);
 107   }
 108 
 109   typedef ResourceHashtable<oop, ClassLoaderStats*,
 110       ClassLoaderStatsClosure::oop_hash, ClassLoaderStatsClosure::oop_equals> StatsTable;
 111 
 112   outputStream* _out;
 113   StatsTable* _stats;


   1 /*
   2  * Copyright (c) 2014, 2020, 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  *


  64                         "monitor", NULL};
  65     return p;
  66   }
  67 };
  68 
  69 
  70 class ClassLoaderStats : public ResourceObj {
  71 public:
  72   ClassLoaderData*  _cld;
  73   oop               _class_loader;
  74   oop               _parent;
  75 
  76   size_t            _chunk_sz;
  77   size_t            _block_sz;
  78   uintx             _classes_count;
  79 
  80   size_t            _anon_chunk_sz;
  81   size_t            _anon_block_sz;
  82   uintx             _anon_classes_count;
  83 
  84   size_t            _hidden_chunk_sz;
  85   size_t            _hidden_block_sz;
  86   uintx             _hidden_classes_count;
  87 
  88   ClassLoaderStats() :
  89     _cld(0),
  90     _class_loader(0),
  91     _parent(0),
  92     _chunk_sz(0),
  93     _block_sz(0),
  94     _classes_count(0),
  95     _anon_chunk_sz(0),
  96     _anon_block_sz(0),
  97     _anon_classes_count(0),
  98     _hidden_chunk_sz(0),
  99     _hidden_block_sz(0),
 100     _hidden_classes_count(0) {
 101   }
 102 };
 103 
 104 
 105 class ClassLoaderStatsClosure : public CLDClosure {
 106 protected:
 107   static bool oop_equals(oop const& s1, oop const& s2) {
 108     return s1 == s2;
 109   }
 110 
 111   static unsigned oop_hash(oop const& s1) {
 112     unsigned hash = (unsigned)((uintptr_t)&s1);
 113     return hash ^ (hash >> LogMinObjAlignment);
 114   }
 115 
 116   typedef ResourceHashtable<oop, ClassLoaderStats*,
 117       ClassLoaderStatsClosure::oop_hash, ClassLoaderStatsClosure::oop_equals> StatsTable;
 118 
 119   outputStream* _out;
 120   StatsTable* _stats;


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