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src/hotspot/share/libadt/dict.cpp

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   1 /*
   2  * Copyright (c) 1997, 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.
   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  *


 144 
 145     for (j = 0; j < b->_cnt; ) {           // Rehash all keys in this bucket
 146       void *key = b->_keyvals[j + j];
 147       if ((_hash(key) & (_size-1)) != i) { // Moving to hi bucket?
 148         nb->_keyvals[nbcnt + nbcnt] = key;
 149         nb->_keyvals[nbcnt + nbcnt + 1] = b->_keyvals[j + j + 1];
 150         nb->_cnt = nbcnt = nbcnt + 1;
 151         b->_cnt--;                         // Remove key/value from lo bucket
 152         b->_keyvals[j + j] = b->_keyvals[b->_cnt + b->_cnt];
 153         b->_keyvals[j + j + 1] = b->_keyvals[b->_cnt + b->_cnt + 1];
 154         // Don't increment j, hash compacted element also.
 155       } else {
 156         j++; // Iterate.
 157       }
 158     } // End of for all key-value pairs in bucket
 159   } // End of for all buckets
 160 }
 161 
 162 //------------------------------Dict-----------------------------------------
 163 // Deep copy a dictionary.
 164 Dict::Dict( const Dict &d ) : _arena(d._arena), _size(d._size), _cnt(d._cnt), _hash(d._hash), _cmp(d._cmp) {
 165   _bin = (bucket*)_arena->Amalloc_4(sizeof(bucket)*_size);
 166   memcpy( (void*)_bin, (void*)d._bin, sizeof(bucket)*_size );
 167   for( uint i=0; i<_size; i++ ) {
 168     if( !_bin[i]._keyvals ) continue;
 169     _bin[i]._keyvals=(void**)_arena->Amalloc_4( sizeof(void *)*_bin[i]._max*2);
 170     memcpy( _bin[i]._keyvals, d._bin[i]._keyvals,_bin[i]._cnt*2*sizeof(void*));
 171   }
 172 }
 173 
 174 //------------------------------Dict-----------------------------------------
 175 // Deep copy a dictionary.
 176 Dict &Dict::operator =( const Dict &d ) {
 177   if( _size < d._size ) {       // If must have more buckets
 178     _arena = d._arena;
 179     _bin = (bucket*)_arena->Arealloc( _bin, sizeof(bucket)*_size, sizeof(bucket)*d._size );
 180     memset( (void*)(&_bin[_size]), 0, (d._size-_size)*sizeof(bucket) );
 181     _size = d._size;
 182   }
 183   uint i;
 184   for( i=0; i<_size; i++ ) // All buckets are empty


   1 /*
   2  * Copyright (c) 1997, 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  *


 144 
 145     for (j = 0; j < b->_cnt; ) {           // Rehash all keys in this bucket
 146       void *key = b->_keyvals[j + j];
 147       if ((_hash(key) & (_size-1)) != i) { // Moving to hi bucket?
 148         nb->_keyvals[nbcnt + nbcnt] = key;
 149         nb->_keyvals[nbcnt + nbcnt + 1] = b->_keyvals[j + j + 1];
 150         nb->_cnt = nbcnt = nbcnt + 1;
 151         b->_cnt--;                         // Remove key/value from lo bucket
 152         b->_keyvals[j + j] = b->_keyvals[b->_cnt + b->_cnt];
 153         b->_keyvals[j + j + 1] = b->_keyvals[b->_cnt + b->_cnt + 1];
 154         // Don't increment j, hash compacted element also.
 155       } else {
 156         j++; // Iterate.
 157       }
 158     } // End of for all key-value pairs in bucket
 159   } // End of for all buckets
 160 }
 161 
 162 //------------------------------Dict-----------------------------------------
 163 // Deep copy a dictionary.
 164 Dict::Dict( const Dict &d ) : ResourceObj(d), _arena(d._arena), _size(d._size), _cnt(d._cnt), _hash(d._hash), _cmp(d._cmp) {
 165   _bin = (bucket*)_arena->Amalloc_4(sizeof(bucket)*_size);
 166   memcpy( (void*)_bin, (void*)d._bin, sizeof(bucket)*_size );
 167   for( uint i=0; i<_size; i++ ) {
 168     if( !_bin[i]._keyvals ) continue;
 169     _bin[i]._keyvals=(void**)_arena->Amalloc_4( sizeof(void *)*_bin[i]._max*2);
 170     memcpy( _bin[i]._keyvals, d._bin[i]._keyvals,_bin[i]._cnt*2*sizeof(void*));
 171   }
 172 }
 173 
 174 //------------------------------Dict-----------------------------------------
 175 // Deep copy a dictionary.
 176 Dict &Dict::operator =( const Dict &d ) {
 177   if( _size < d._size ) {       // If must have more buckets
 178     _arena = d._arena;
 179     _bin = (bucket*)_arena->Arealloc( _bin, sizeof(bucket)*_size, sizeof(bucket)*d._size );
 180     memset( (void*)(&_bin[_size]), 0, (d._size-_size)*sizeof(bucket) );
 181     _size = d._size;
 182   }
 183   uint i;
 184   for( i=0; i<_size; i++ ) // All buckets are empty


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