truffle: src/share/vm/utilities/hashtable.cpp annotate

annotate src/share/vm/utilities/hashtable.cpp @ 14505:524b54a7f1b5

8034839: jvm hangs with gc/gctests/LoadUnloadGC test Summary: Provide fast lookup of checked dependencies via hashmap Reviewed-by: kvn, roland

author	anoll
date	Wed, 26 Feb 2014 11:29:47 +0100
parents	cd6b3f1a94ff
children	3c6ae9109a86 4ca6dc0799b6

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
14340 cd6b3f1a94ff 8033792: AltHashing used jint for imprecise bit shifting minqi parents: 12316 diff changeset	2 * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
0 a61af66fc99e Initial load duke parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load duke parents: diff changeset	4 *
a61af66fc99e Initial load duke parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load duke parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load duke parents: diff changeset	7 * published by the Free Software Foundation.
a61af66fc99e Initial load duke parents: diff changeset	8 *
a61af66fc99e Initial load duke parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load duke parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load duke parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load duke parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load duke parents: diff changeset	13 * accompanied this code).
a61af66fc99e Initial load duke parents: diff changeset	14 *
a61af66fc99e Initial load duke parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load duke parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load duke parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load duke parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 470 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 470 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 470 diff changeset	21 * questions.
0 a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	25 #include "precompiled.hpp"
6201 ace99a6ffc83 7181200: JVM new hashing code breaks SA in product mode coleenp parents: 6197 diff changeset	26 #include "classfile/altHashing.hpp"
ace99a6ffc83 7181200: JVM new hashing code breaks SA in product mode coleenp parents: 6197 diff changeset	27 #include "classfile/javaClasses.hpp"
14505 524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	28 #include "code/dependencies.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	29 #include "memory/allocation.inline.hpp"
6172 246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	30 #include "memory/filemap.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	31 #include "memory/resourceArea.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	32 #include "oops/oop.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	33 #include "runtime/safepoint.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	34 #include "utilities/dtrace.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	35 #include "utilities/hashtable.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	36 #include "utilities/hashtable.inline.hpp"
10312 a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	37 #include "utilities/numberSeq.hpp"
0 a61af66fc99e Initial load duke parents: diff changeset	38
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	39
0 a61af66fc99e Initial load duke parents: diff changeset	40 // This is a generic hashtable, designed to be used for the symbol
a61af66fc99e Initial load duke parents: diff changeset	41 // and string tables.
a61af66fc99e Initial load duke parents: diff changeset	42 //
a61af66fc99e Initial load duke parents: diff changeset	43 // It is implemented as an open hash table with a fixed number of buckets.
a61af66fc99e Initial load duke parents: diff changeset	44 //
a61af66fc99e Initial load duke parents: diff changeset	45 // %note:
a61af66fc99e Initial load duke parents: diff changeset	46 // - HashtableEntrys are allocated in blocks to reduce the space overhead.
a61af66fc99e Initial load duke parents: diff changeset	47
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	48 template <MEMFLAGS F> BasicHashtableEntry<F>* BasicHashtable<F>::new_entry(unsigned int hashValue) {
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	49 BasicHashtableEntry<F>* entry;
0 a61af66fc99e Initial load duke parents: diff changeset	50
a61af66fc99e Initial load duke parents: diff changeset	51 if (_free_list) {
a61af66fc99e Initial load duke parents: diff changeset	52 entry = _free_list;
a61af66fc99e Initial load duke parents: diff changeset	53 _free_list = _free_list->next();
a61af66fc99e Initial load duke parents: diff changeset	54 } else {
432 275a3b7ff0d6 6770949: minor tweaks before 6655638 jrose parents: 0 diff changeset	55 if (_first_free_entry + _entry_size >= _end_block) {
275a3b7ff0d6 6770949: minor tweaks before 6655638 jrose parents: 0 diff changeset	56 int block_size = MIN2(512, MAX2((int)_table_size / 2, (int)_number_of_entries));
0 a61af66fc99e Initial load duke parents: diff changeset	57 int len = _entry_size * block_size;
432 275a3b7ff0d6 6770949: minor tweaks before 6655638 jrose parents: 0 diff changeset	58 len = 1 << log2_intptr(len); // round down to power of 2
275a3b7ff0d6 6770949: minor tweaks before 6655638 jrose parents: 0 diff changeset	59 assert(len >= _entry_size, "");
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	60 _first_free_entry = NEW_C_HEAP_ARRAY2(char, len, F, CURRENT_PC);
0 a61af66fc99e Initial load duke parents: diff changeset	61 _end_block = _first_free_entry + len;
a61af66fc99e Initial load duke parents: diff changeset	62 }
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	63 entry = (BasicHashtableEntry<F>*)_first_free_entry;
0 a61af66fc99e Initial load duke parents: diff changeset	64 _first_free_entry += _entry_size;
a61af66fc99e Initial load duke parents: diff changeset	65 }
a61af66fc99e Initial load duke parents: diff changeset	66
432 275a3b7ff0d6 6770949: minor tweaks before 6655638 jrose parents: 0 diff changeset	67 assert(_entry_size % HeapWordSize == 0, "");
0 a61af66fc99e Initial load duke parents: diff changeset	68 entry->set_hash(hashValue);
a61af66fc99e Initial load duke parents: diff changeset	69 return entry;
a61af66fc99e Initial load duke parents: diff changeset	70 }
a61af66fc99e Initial load duke parents: diff changeset	71
a61af66fc99e Initial load duke parents: diff changeset	72
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	73 template <class T, MEMFLAGS F> HashtableEntry<T, F>* Hashtable<T, F>::new_entry(unsigned int hashValue, T obj) {
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	74 HashtableEntry<T, F>* entry;
0 a61af66fc99e Initial load duke parents: diff changeset	75
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	76 entry = (HashtableEntry<T, F>*)BasicHashtable<F>::new_entry(hashValue);
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	77 entry->set_literal(obj);
0 a61af66fc99e Initial load duke parents: diff changeset	78 return entry;
a61af66fc99e Initial load duke parents: diff changeset	79 }
a61af66fc99e Initial load duke parents: diff changeset	80
6162 e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	81 // Check to see if the hashtable is unbalanced. The caller set a flag to
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	82 // rehash at the next safepoint. If this bucket is 60 times greater than the
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	83 // expected average bucket length, it's an unbalanced hashtable.
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	84 // This is somewhat an arbitrary heuristic but if one bucket gets to
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	85 // rehash_count which is currently 100, there's probably something wrong.
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	86
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	87 template <MEMFLAGS F> bool BasicHashtable<F>::check_rehash_table(int count) {
6162 e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	88 assert(table_size() != 0, "underflow");
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	89 if (count > (((double)number_of_entries()/(double)table_size())*rehash_multiple)) {
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	90 // Set a flag for the next safepoint, which should be at some guaranteed
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	91 // safepoint interval.
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	92 return true;
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	93 }
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	94 return false;
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	95 }
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	96
14340 cd6b3f1a94ff 8033792: AltHashing used jint for imprecise bit shifting minqi parents: 12316 diff changeset	97 template <class T, MEMFLAGS F> juint Hashtable<T, F>::_seed = 0;
6201 ace99a6ffc83 7181200: JVM new hashing code breaks SA in product mode coleenp parents: 6197 diff changeset	98
6162 e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	99 // Create a new table and using alternate hash code, populate the new table
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	100 // with the existing elements. This can be used to change the hash code
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	101 // and could in the future change the size of the table.
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	102
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	103 template <class T, MEMFLAGS F> void Hashtable<T, F>::move_to(Hashtable<T, F>* new_table) {
6201 ace99a6ffc83 7181200: JVM new hashing code breaks SA in product mode coleenp parents: 6197 diff changeset	104
ace99a6ffc83 7181200: JVM new hashing code breaks SA in product mode coleenp parents: 6197 diff changeset	105 // Initialize the global seed for hashing.
ace99a6ffc83 7181200: JVM new hashing code breaks SA in product mode coleenp parents: 6197 diff changeset	106 _seed = AltHashing::compute_seed();
ace99a6ffc83 7181200: JVM new hashing code breaks SA in product mode coleenp parents: 6197 diff changeset	107 assert(seed() != 0, "shouldn't be zero");
ace99a6ffc83 7181200: JVM new hashing code breaks SA in product mode coleenp parents: 6197 diff changeset	108
ace99a6ffc83 7181200: JVM new hashing code breaks SA in product mode coleenp parents: 6197 diff changeset	109 int saved_entry_count = this->number_of_entries();
6162 e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	110
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	111 // Iterate through the table and create a new entry for the new table
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	112 for (int i = 0; i < new_table->table_size(); ++i) {
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	113 for (HashtableEntry<T, F>* p = bucket(i); p != NULL; ) {
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	114 HashtableEntry<T, F>* next = p->next();
6162 e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	115 T string = p->literal();
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	116 // Use alternate hashing algorithm on the symbol in the first table
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6260 diff changeset	117 unsigned int hashValue = string->new_hash(seed());
6162 e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	118 // Get a new index relative to the new table (can also change size)
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	119 int index = new_table->hash_to_index(hashValue);
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	120 p->set_hash(hashValue);
6172 246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	121 // Keep the shared bit in the Hashtable entry to indicate that this entry
246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	122 // can't be deleted. The shared bit is the LSB in the _next field so
246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	123 // walking the hashtable past these entries requires
246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	124 // BasicHashtableEntry::make_ptr() call.
246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	125 bool keep_shared = p->is_shared();
6260 5e2dc722e70d 7186278: Build error after CR#6995781 / 7151532 with GCC 4.7.0 andrew parents: 6201 diff changeset	126 this->unlink_entry(p);
6162 e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	127 new_table->add_entry(index, p);
6172 246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	128 if (keep_shared) {
246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	129 p->set_shared();
246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	130 }
6162 e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	131 p = next;
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	132 }
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	133 }
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	134 // give the new table the free list as well
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	135 new_table->copy_freelist(this);
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	136 assert(new_table->number_of_entries() == saved_entry_count, "lost entry on dictionary copy?");
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	137
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	138 // Destroy memory used by the buckets in the hashtable. The memory
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	139 // for the elements has been used in a new table and is not
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	140 // destroyed. The memory reuse will benefit resizing the SystemDictionary
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	141 // to avoid a memory allocation spike at safepoint.
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	142 BasicHashtable<F>::free_buckets();
6162 e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	143 }
e9140bf80b4a 7158800: Improve storage of symbol tables coleenp parents: 4006 diff changeset	144
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	145 template <MEMFLAGS F> void BasicHashtable<F>::free_buckets() {
6172 246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	146 if (NULL != _buckets) {
246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	147 // Don't delete the buckets in the shared space. They aren't
246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	148 // allocated by os::malloc
246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	149 if (!UseSharedSpaces \|\|
246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	150 !FileMapInfo::current_info()->is_in_shared_space(_buckets)) {
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	151 FREE_C_HEAP_ARRAY(HashtableBucket, _buckets, F);
6172 246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	152 }
246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	153 _buckets = NULL;
246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	154 }
246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	155 }
246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	156
246d977b51f2 7178670: runtime/7158800/BadUtf8.java fails in SymbolTable::rehash_table coleenp parents: 6162 diff changeset	157
0 a61af66fc99e Initial load duke parents: diff changeset	158 // Reverse the order of elements in the hash buckets.
a61af66fc99e Initial load duke parents: diff changeset	159
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	160 template <MEMFLAGS F> void BasicHashtable<F>::reverse() {
0 a61af66fc99e Initial load duke parents: diff changeset	161
a61af66fc99e Initial load duke parents: diff changeset	162 for (int i = 0; i < _table_size; ++i) {
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	163 BasicHashtableEntry<F>* new_list = NULL;
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	164 BasicHashtableEntry<F>* p = bucket(i);
0 a61af66fc99e Initial load duke parents: diff changeset	165 while (p != NULL) {
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	166 BasicHashtableEntry<F>* next = p->next();
0 a61af66fc99e Initial load duke parents: diff changeset	167 p->set_next(new_list);
a61af66fc99e Initial load duke parents: diff changeset	168 new_list = p;
a61af66fc99e Initial load duke parents: diff changeset	169 p = next;
a61af66fc99e Initial load duke parents: diff changeset	170 }
a61af66fc99e Initial load duke parents: diff changeset	171 *bucket_addr(i) = new_list;
a61af66fc99e Initial load duke parents: diff changeset	172 }
a61af66fc99e Initial load duke parents: diff changeset	173 }
a61af66fc99e Initial load duke parents: diff changeset	174
a61af66fc99e Initial load duke parents: diff changeset	175
a61af66fc99e Initial load duke parents: diff changeset	176 // Copy the table to the shared space.
a61af66fc99e Initial load duke parents: diff changeset	177
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	178 template <MEMFLAGS F> void BasicHashtable<F>::copy_table(char** top, char* end) {
0 a61af66fc99e Initial load duke parents: diff changeset	179
a61af66fc99e Initial load duke parents: diff changeset	180 // Dump the hash table entries.
a61af66fc99e Initial load duke parents: diff changeset	181
a61af66fc99e Initial load duke parents: diff changeset	182 intptr_t plen = (intptr_t)(*top);
a61af66fc99e Initial load duke parents: diff changeset	183 top += sizeof(plen);
a61af66fc99e Initial load duke parents: diff changeset	184
a61af66fc99e Initial load duke parents: diff changeset	185 int i;
a61af66fc99e Initial load duke parents: diff changeset	186 for (i = 0; i < _table_size; ++i) {
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	187 for (BasicHashtableEntry<F>** p = _buckets[i].entry_addr();
0 a61af66fc99e Initial load duke parents: diff changeset	188 *p != NULL;
a61af66fc99e Initial load duke parents: diff changeset	189 p = (*p)->next_addr()) {
a61af66fc99e Initial load duke parents: diff changeset	190 if (*top + entry_size() > end) {
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	191 report_out_of_shared_space(SharedMiscData);
0 a61af66fc99e Initial load duke parents: diff changeset	192 }
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	193 p = (BasicHashtableEntry<F>)memcpy(top, p, entry_size());
0 a61af66fc99e Initial load duke parents: diff changeset	194 *top += entry_size();
a61af66fc99e Initial load duke parents: diff changeset	195 }
a61af66fc99e Initial load duke parents: diff changeset	196 }
a61af66fc99e Initial load duke parents: diff changeset	197 plen = (char)(top) - (char)plen - sizeof(*plen);
a61af66fc99e Initial load duke parents: diff changeset	198
a61af66fc99e Initial load duke parents: diff changeset	199 // Set the shared bit.
a61af66fc99e Initial load duke parents: diff changeset	200
a61af66fc99e Initial load duke parents: diff changeset	201 for (i = 0; i < _table_size; ++i) {
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	202 for (BasicHashtableEntry<F>* p = bucket(i); p != NULL; p = p->next()) {
0 a61af66fc99e Initial load duke parents: diff changeset	203 p->set_shared();
a61af66fc99e Initial load duke parents: diff changeset	204 }
a61af66fc99e Initial load duke parents: diff changeset	205 }
a61af66fc99e Initial load duke parents: diff changeset	206 }
a61af66fc99e Initial load duke parents: diff changeset	207
a61af66fc99e Initial load duke parents: diff changeset	208
a61af66fc99e Initial load duke parents: diff changeset	209
a61af66fc99e Initial load duke parents: diff changeset	210 // Reverse the order of elements in the hash buckets.
a61af66fc99e Initial load duke parents: diff changeset	211
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	212 template <class T, MEMFLAGS F> void Hashtable<T, F>::reverse(void* boundary) {
0 a61af66fc99e Initial load duke parents: diff changeset	213
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	214 for (int i = 0; i < this->table_size(); ++i) {
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	215 HashtableEntry<T, F>* high_list = NULL;
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	216 HashtableEntry<T, F>* low_list = NULL;
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	217 HashtableEntry<T, F>* last_low_entry = NULL;
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	218 HashtableEntry<T, F>* p = bucket(i);
0 a61af66fc99e Initial load duke parents: diff changeset	219 while (p != NULL) {
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	220 HashtableEntry<T, F>* next = p->next();
0 a61af66fc99e Initial load duke parents: diff changeset	221 if ((void*)p->literal() >= boundary) {
a61af66fc99e Initial load duke parents: diff changeset	222 p->set_next(high_list);
a61af66fc99e Initial load duke parents: diff changeset	223 high_list = p;
a61af66fc99e Initial load duke parents: diff changeset	224 } else {
a61af66fc99e Initial load duke parents: diff changeset	225 p->set_next(low_list);
a61af66fc99e Initial load duke parents: diff changeset	226 low_list = p;
a61af66fc99e Initial load duke parents: diff changeset	227 if (last_low_entry == NULL) {
a61af66fc99e Initial load duke parents: diff changeset	228 last_low_entry = p;
a61af66fc99e Initial load duke parents: diff changeset	229 }
a61af66fc99e Initial load duke parents: diff changeset	230 }
a61af66fc99e Initial load duke parents: diff changeset	231 p = next;
a61af66fc99e Initial load duke parents: diff changeset	232 }
a61af66fc99e Initial load duke parents: diff changeset	233 if (low_list != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	234 *bucket_addr(i) = low_list;
a61af66fc99e Initial load duke parents: diff changeset	235 last_low_entry->set_next(high_list);
a61af66fc99e Initial load duke parents: diff changeset	236 } else {
a61af66fc99e Initial load duke parents: diff changeset	237 *bucket_addr(i) = high_list;
a61af66fc99e Initial load duke parents: diff changeset	238 }
a61af66fc99e Initial load duke parents: diff changeset	239 }
a61af66fc99e Initial load duke parents: diff changeset	240 }
a61af66fc99e Initial load duke parents: diff changeset	241
10312 a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	242 template <class T, MEMFLAGS F> int Hashtable<T, F>::literal_size(Symbol *symbol) {
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	243 return symbol->size() * HeapWordSize;
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	244 }
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	245
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	246 template <class T, MEMFLAGS F> int Hashtable<T, F>::literal_size(oop oop) {
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	247 // NOTE: this would over-count if (pre-JDK8) java_lang_Class::has_offset_field() is true,
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	248 // and the String.value array is shared by several Strings. However, starting from JDK8,
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	249 // the String.value array is not shared anymore.
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	250 assert(oop != NULL && oop->klass() == SystemDictionary::String_klass(), "only strings are supported");
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	251 return (oop->size() + java_lang_String::value(oop)->size()) * HeapWordSize;
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	252 }
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	253
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	254 // Dump footprint and bucket length statistics
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	255 //
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	256 // Note: if you create a new subclass of Hashtable<MyNewType, F>, you will need to
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	257 // add a new function Hashtable<T, F>::literal_size(MyNewType lit)
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	258
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	259 template <class T, MEMFLAGS F> void Hashtable<T, F>::dump_table(outputStream* st, const char *table_name) {
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	260 NumberSeq summary;
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	261 int literal_bytes = 0;
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	262 for (int i = 0; i < this->table_size(); ++i) {
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	263 int count = 0;
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	264 for (HashtableEntry<T, F>* e = bucket(i);
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	265 e != NULL; e = e->next()) {
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	266 count++;
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	267 literal_bytes += literal_size(e->literal());
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	268 }
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	269 summary.add((double)count);
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	270 }
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	271 double num_buckets = summary.num();
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	272 double num_entries = summary.sum();
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	273
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	274 int bucket_bytes = (int)num_buckets * sizeof(bucket(0));
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	275 int entry_bytes = (int)num_entries * sizeof(HashtableEntry<T, F>);
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	276 int total_bytes = literal_bytes + bucket_bytes + entry_bytes;
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	277
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	278 double bucket_avg = (num_buckets <= 0) ? 0 : (bucket_bytes / num_buckets);
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	279 double entry_avg = (num_entries <= 0) ? 0 : (entry_bytes / num_entries);
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	280 double literal_avg = (num_entries <= 0) ? 0 : (literal_bytes / num_entries);
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	281
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	282 st->print_cr("%s statistics:", table_name);
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	283 st->print_cr("Number of buckets : %9d = %9d bytes, avg %7.3f", (int)num_buckets, bucket_bytes, bucket_avg);
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	284 st->print_cr("Number of entries : %9d = %9d bytes, avg %7.3f", (int)num_entries, entry_bytes, entry_avg);
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	285 st->print_cr("Number of literals : %9d = %9d bytes, avg %7.3f", (int)num_entries, literal_bytes, literal_avg);
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	286 st->print_cr("Total footprint : %9s = %9d bytes", "", total_bytes);
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	287 st->print_cr("Average bucket size : %9.3f", summary.avg());
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	288 st->print_cr("Variance of bucket size : %9.3f", summary.variance());
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	289 st->print_cr("Std. dev. of bucket size: %9.3f", summary.sd());
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	290 st->print_cr("Maximum bucket size : %9d", (int)summary.maximum());
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	291 }
a5d6f0c3585f 8014262: PrintStringTableStatistics should include more footprint info iklam parents: 6725 diff changeset	292
0 a61af66fc99e Initial load duke parents: diff changeset	293
a61af66fc99e Initial load duke parents: diff changeset	294 // Dump the hash table buckets.
a61af66fc99e Initial load duke parents: diff changeset	295
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	296 template <MEMFLAGS F> void BasicHashtable<F>::copy_buckets(char** top, char* end) {
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	297 intptr_t len = _table_size * sizeof(HashtableBucket<F>);
0 a61af66fc99e Initial load duke parents: diff changeset	298 (intptr_t)(*top) = len;
a61af66fc99e Initial load duke parents: diff changeset	299 *top += sizeof(intptr_t);
a61af66fc99e Initial load duke parents: diff changeset	300
a61af66fc99e Initial load duke parents: diff changeset	301 (intptr_t)(*top) = _number_of_entries;
a61af66fc99e Initial load duke parents: diff changeset	302 *top += sizeof(intptr_t);
a61af66fc99e Initial load duke parents: diff changeset	303
a61af66fc99e Initial load duke parents: diff changeset	304 if (*top + len > end) {
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	305 report_out_of_shared_space(SharedMiscData);
0 a61af66fc99e Initial load duke parents: diff changeset	306 }
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	307 _buckets = (HashtableBucket<F>)memcpy(top, _buckets, len);
0 a61af66fc99e Initial load duke parents: diff changeset	308 *top += len;
a61af66fc99e Initial load duke parents: diff changeset	309 }
a61af66fc99e Initial load duke parents: diff changeset	310
a61af66fc99e Initial load duke parents: diff changeset	311
a61af66fc99e Initial load duke parents: diff changeset	312 #ifndef PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	313
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	314 template <class T, MEMFLAGS F> void Hashtable<T, F>::print() {
0 a61af66fc99e Initial load duke parents: diff changeset	315 ResourceMark rm;
a61af66fc99e Initial load duke parents: diff changeset	316
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	317 for (int i = 0; i < BasicHashtable<F>::table_size(); i++) {
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	318 HashtableEntry<T, F>* entry = bucket(i);
0 a61af66fc99e Initial load duke parents: diff changeset	319 while(entry != NULL) {
a61af66fc99e Initial load duke parents: diff changeset	320 tty->print("%d : ", i);
a61af66fc99e Initial load duke parents: diff changeset	321 entry->literal()->print();
a61af66fc99e Initial load duke parents: diff changeset	322 tty->cr();
a61af66fc99e Initial load duke parents: diff changeset	323 entry = entry->next();
a61af66fc99e Initial load duke parents: diff changeset	324 }
a61af66fc99e Initial load duke parents: diff changeset	325 }
a61af66fc99e Initial load duke parents: diff changeset	326 }
a61af66fc99e Initial load duke parents: diff changeset	327
a61af66fc99e Initial load duke parents: diff changeset	328
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	329 template <MEMFLAGS F> void BasicHashtable<F>::verify() {
0 a61af66fc99e Initial load duke parents: diff changeset	330 int count = 0;
a61af66fc99e Initial load duke parents: diff changeset	331 for (int i = 0; i < table_size(); i++) {
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	332 for (BasicHashtableEntry<F>* p = bucket(i); p != NULL; p = p->next()) {
0 a61af66fc99e Initial load duke parents: diff changeset	333 ++count;
a61af66fc99e Initial load duke parents: diff changeset	334 }
a61af66fc99e Initial load duke parents: diff changeset	335 }
a61af66fc99e Initial load duke parents: diff changeset	336 assert(count == number_of_entries(), "number of hashtable entries incorrect");
a61af66fc99e Initial load duke parents: diff changeset	337 }
a61af66fc99e Initial load duke parents: diff changeset	338
a61af66fc99e Initial load duke parents: diff changeset	339
a61af66fc99e Initial load duke parents: diff changeset	340 #endif // PRODUCT
a61af66fc99e Initial load duke parents: diff changeset	341
a61af66fc99e Initial load duke parents: diff changeset	342 #ifdef ASSERT
a61af66fc99e Initial load duke parents: diff changeset	343
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	344 template <MEMFLAGS F> void BasicHashtable<F>::verify_lookup_length(double load) {
0 a61af66fc99e Initial load duke parents: diff changeset	345 if ((double)_lookup_length / (double)_lookup_count > load * 2.0) {
a61af66fc99e Initial load duke parents: diff changeset	346 warning("Performance bug: SystemDictionary lookup_count=%d "
a61af66fc99e Initial load duke parents: diff changeset	347 "lookup_length=%d average=%lf load=%f",
a61af66fc99e Initial load duke parents: diff changeset	348 _lookup_count, _lookup_length,
a61af66fc99e Initial load duke parents: diff changeset	349 (double) _lookup_length / _lookup_count, load);
a61af66fc99e Initial load duke parents: diff changeset	350 }
a61af66fc99e Initial load duke parents: diff changeset	351 }
a61af66fc99e Initial load duke parents: diff changeset	352
a61af66fc99e Initial load duke parents: diff changeset	353 #endif
14505 524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	354
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	355
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	356 template<class T, class M> GenericHashtable<T, M>::GenericHashtable(int size, bool C_heap, MEMFLAGS memflag) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	357 assert(size > 0, " Invalid hashtable size");
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	358 _size = size;
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	359 _C_heap = C_heap;
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	360 _memflag = memflag;
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	361 // Perform subtype-specific resource allocation
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	362 _items = (C_heap) ? NEW_C_HEAP_ARRAY(T, size, memflag) : NEW_RESOURCE_ARRAY(T, size);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	363 memset(_items, 0, sizeof(T) size);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	364
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	365 DEBUG_ONLY(_num_items = 0;)
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	366 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	367
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	368 template<class T, class M> GenericHashtable<T, M>::~GenericHashtable() {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	369 if (on_C_heap()) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	370 // Check backing array
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	371 for (int i = 0; i < size(); i++) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	372 T* item = head(i);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	373 // Delete all items in linked list
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	374 while (item != NULL) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	375 T* next_item = item->next();
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	376 delete item;
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	377 DEBUG_ONLY(_num_items--);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	378 item = next_item;
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	379 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	380 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	381 FREE_C_HEAP_ARRAY(T*, _items, _memflag);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	382 _items = NULL;
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	383 assert (_num_items == 0, "Not all memory released");
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	384 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	385 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	386
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	387 /**
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	388 * Return a pointer to the item 'I' that is stored in the hashtable for
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	389 * which match_item->equals(I) == true. If no such item is found, NULL
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	390 * is returned.
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	391 */
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	392 template<class T, class F> T* GenericHashtable<T, F>::contains(T* match_item) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	393 if (match_item != NULL) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	394 int idx = index(match_item);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	395 return contains_impl(match_item, idx);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	396 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	397 return NULL;
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	398 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	399
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	400 /**
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	401 * Add item to the hashtable. Return 'true' if the item was added
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	402 * and false otherwise.
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	403 */
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	404 template<class T, class F> bool GenericHashtable<T, F>::add(T* item) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	405 if (item != NULL) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	406 int idx = index(item);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	407 T* found_item = contains_impl(item, idx);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	408 if (found_item == NULL) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	409 T* list_head = head(idx);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	410 item->set_next(list_head);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	411 item->set_prev(NULL);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	412
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	413 if (list_head != NULL) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	414 list_head->set_prev(item);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	415 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	416 set_head(item, idx);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	417 DEBUG_ONLY(_num_items++);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	418 return true;
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	419 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	420 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	421 return false;
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	422 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	423
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	424 /**
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	425 * Removes an item 'I' from the hashtable, if present. 'I' is removed, if
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	426 * match_item->equals(I) == true. Removing an item from the hashtable does
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	427 * not free memory.
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	428 */
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	429 template<class T, class F> T* GenericHashtable<T, F>::remove(T* match_item) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	430 if (match_item != NULL) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	431 int idx = index(match_item);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	432 T* found_item = contains_impl(match_item, idx);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	433 if (found_item != NULL) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	434 // Remove item from linked list
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	435 T* prev = found_item->prev();
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	436 T* next = found_item->next();
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	437 if (prev != NULL) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	438 prev->set_next(next);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	439 } else {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	440 set_head(next, idx);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	441 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	442 if (next != NULL) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	443 next->set_prev(prev);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	444 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	445
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	446 DEBUG_ONLY(_num_items--);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	447 return found_item;
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	448 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	449 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	450 return NULL;
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	451 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	452
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	453
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	454 template<class T, class F> T* GenericHashtable<T, F>::contains_impl(T* item, int idx) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	455 T* current_item = head(idx);
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	456 while (current_item != NULL) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	457 if (current_item->equals(item)) {
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	458 return current_item;
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	459 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	460 current_item = current_item->next();
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	461 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	462 return NULL;
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	463 }
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	464
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	465
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	466 // Explicitly instantiate these types
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6260 diff changeset	467 template class Hashtable<ConstantPool*, mtClass>;
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	468 template class Hashtable<Symbol*, mtSymbol>;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6260 diff changeset	469 template class Hashtable<Klass*, mtClass>;
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	470 template class Hashtable<oop, mtClass>;
12316 190899198332 7195622: CheckUnhandledOops has limited usefulness now hseigel parents: 10312 diff changeset	471 #if defined(SOLARIS) \|\| defined(CHECK_UNHANDLED_OOPS)
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	472 template class Hashtable<oop, mtSymbol>;
12316 190899198332 7195622: CheckUnhandledOops has limited usefulness now hseigel parents: 10312 diff changeset	473 #endif // SOLARIS \|\| CHECK_UNHANDLED_OOPS
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	474 template class Hashtable<oopDesc*, mtSymbol>;
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	475 template class Hashtable<Symbol*, mtClass>;
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	476 template class HashtableEntry<Symbol*, mtSymbol>;
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	477 template class HashtableEntry<Symbol*, mtClass>;
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	478 template class HashtableEntry<oop, mtSymbol>;
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	479 template class BasicHashtableEntry<mtSymbol>;
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	480 template class BasicHashtableEntry<mtCode>;
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	481 template class BasicHashtable<mtClass>;
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	482 template class BasicHashtable<mtSymbol>;
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	483 template class BasicHashtable<mtCode>;
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6172 diff changeset	484 template class BasicHashtable<mtInternal>;
14505 524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	485
524b54a7f1b5 8034839: jvm hangs with gc/gctests/LoadUnloadGC test anoll parents: 14340 diff changeset	486 template class GenericHashtable<DependencySignature, ResourceObj>;

Mercurial > hg > truffle

annotate src/share/vm/utilities/hashtable.cpp @ 14505:524b54a7f1b5