1 /* 2 * Copyright (c) 2003, 2008, 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 */ 24 25 # include "incls/_precompiled.incl" 26 # include "incls/_hashtable.cpp.incl" 27 28 HS_DTRACE_PROBE_DECL4(hs_private, hashtable__new_entry, 29 void*, unsigned int, oop, void*); 30 31 // This is a generic hashtable, designed to be used for the symbol 32 // and string tables. 33 // 34 // It is implemented as an open hash table with a fixed number of buckets. 35 // 36 // %note: 37 // - HashtableEntrys are allocated in blocks to reduce the space overhead. 38 39 BasicHashtableEntry* BasicHashtable::new_entry(unsigned int hashValue) { 40 BasicHashtableEntry* entry; 41 42 if (_free_list) { 43 entry = _free_list; 44 _free_list = _free_list->next(); 45 } else { 46 if (_first_free_entry + _entry_size >= _end_block) { | 1 /* 2 * Copyright (c) 2003, 2010, 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 */ 24 25 #include "precompiled.hpp" 26 #include "memory/allocation.inline.hpp" 27 #include "memory/resourceArea.hpp" 28 #include "oops/oop.inline.hpp" 29 #include "runtime/safepoint.hpp" 30 #include "utilities/dtrace.hpp" 31 #include "utilities/hashtable.hpp" 32 #include "utilities/hashtable.inline.hpp" 33 34 HS_DTRACE_PROBE_DECL4(hs_private, hashtable__new_entry, 35 void*, unsigned int, oop, void*); 36 37 // This is a generic hashtable, designed to be used for the symbol 38 // and string tables. 39 // 40 // It is implemented as an open hash table with a fixed number of buckets. 41 // 42 // %note: 43 // - HashtableEntrys are allocated in blocks to reduce the space overhead. 44 45 BasicHashtableEntry* BasicHashtable::new_entry(unsigned int hashValue) { 46 BasicHashtableEntry* entry; 47 48 if (_free_list) { 49 entry = _free_list; 50 _free_list = _free_list->next(); 51 } else { 52 if (_first_free_entry + _entry_size >= _end_block) { |