truffle: src/share/vm/oops/symbol.cpp annotate

annotate src/share/vm/oops/symbol.cpp @ 6725:da91efe96a93

6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>

author	coleenp
date	Sat, 01 Sep 2012 13:25:18 -0400
parents	1d7922586cf6
children	bd7a7ce2e264

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
5979 fc9d8850ab8b 7150058: Allocate symbols from null boot loader to an arena for NMT coleenp parents: 2426 diff changeset	2 * Copyright (c) 1997, 2012, 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: 1138 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1138 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: 1138 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
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	25
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	26 #include "precompiled.hpp"
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	27 #include "classfile/altHashing.hpp"
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	28 #include "classfile/classLoaderData.hpp"
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	29 #include "oops/symbol.hpp"
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	30 #include "runtime/os.hpp"
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	31 #include "memory/allocation.inline.hpp"
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	32 #include "memory/resourceArea.hpp"
0 a61af66fc99e Initial load duke parents: diff changeset	33
5979 fc9d8850ab8b 7150058: Allocate symbols from null boot loader to an arena for NMT coleenp parents: 2426 diff changeset	34 Symbol::Symbol(const u1* name, int length, int refcount) : _refcount(refcount), _length(length) {
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	35 _identity_hash = os::random();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	36 for (int i = 0; i < _length; i++) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	37 byte_at_put(i, name[i]);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	38 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	39 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	40
5979 fc9d8850ab8b 7150058: Allocate symbols from null boot loader to an arena for NMT coleenp parents: 2426 diff changeset	41 void* Symbol::operator new(size_t sz, int len, TRAPS) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	42 int alloc_size = size(len)*HeapWordSize;
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 5979 diff changeset	43 address res = (address) AllocateHeap(alloc_size, mtSymbol);
5979 fc9d8850ab8b 7150058: Allocate symbols from null boot loader to an arena for NMT coleenp parents: 2426 diff changeset	44 return res;
fc9d8850ab8b 7150058: Allocate symbols from null boot loader to an arena for NMT coleenp parents: 2426 diff changeset	45 }
fc9d8850ab8b 7150058: Allocate symbols from null boot loader to an arena for NMT coleenp parents: 2426 diff changeset	46
fc9d8850ab8b 7150058: Allocate symbols from null boot loader to an arena for NMT coleenp parents: 2426 diff changeset	47 void* Symbol::operator new(size_t sz, int len, Arena* arena, TRAPS) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	48 int alloc_size = size(len)*HeapWordSize;
5979 fc9d8850ab8b 7150058: Allocate symbols from null boot loader to an arena for NMT coleenp parents: 2426 diff changeset	49 address res = (address)arena->Amalloc(alloc_size);
fc9d8850ab8b 7150058: Allocate symbols from null boot loader to an arena for NMT coleenp parents: 2426 diff changeset	50 return res;
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	51 }
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	52
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	53 void* Symbol::operator new(size_t sz, int len, ClassLoaderData* loader_data, TRAPS) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	54 address res;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	55 int alloc_size = size(len)*HeapWordSize;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	56 res = (address) Metaspace::allocate(loader_data, size(len), true,
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	57 Metaspace::NonClassType, CHECK_NULL);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	58 return res;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	59 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	60
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	61 void Symbol::operator delete(void *p) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	62 assert(((Symbol*)p)->refcount() == 0, "should not call this");
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	63 FreeHeap(p);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	64 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	65
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	66 // ------------------------------------------------------------------
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	67 // Symbol::equals
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	68 //
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	69 // Compares the symbol with a string of the given length.
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	70 bool Symbol::equals(const char* str, int len) const {
0 a61af66fc99e Initial load duke parents: diff changeset	71 int l = utf8_length();
a61af66fc99e Initial load duke parents: diff changeset	72 if (l != len) return false;
a61af66fc99e Initial load duke parents: diff changeset	73 while (l-- > 0) {
a61af66fc99e Initial load duke parents: diff changeset	74 if (str[l] != (char) byte_at(l))
a61af66fc99e Initial load duke parents: diff changeset	75 return false;
a61af66fc99e Initial load duke parents: diff changeset	76 }
a61af66fc99e Initial load duke parents: diff changeset	77 assert(l == -1, "we should be at the beginning");
a61af66fc99e Initial load duke parents: diff changeset	78 return true;
a61af66fc99e Initial load duke parents: diff changeset	79 }
a61af66fc99e Initial load duke parents: diff changeset	80
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	81
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	82 // ------------------------------------------------------------------
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	83 // Symbol::starts_with
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	84 //
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	85 // Tests if the symbol starts with the specified prefix of the given
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	86 // length.
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	87 bool Symbol::starts_with(const char* prefix, int len) const {
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	88 if (len > utf8_length()) return false;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	89 while (len-- > 0) {
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	90 if (prefix[len] != (char) byte_at(len))
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	91 return false;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	92 }
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	93 assert(len == -1, "we should be at the beginning");
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	94 return true;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	95 }
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	96
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	97
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	98 // ------------------------------------------------------------------
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	99 // Symbol::index_of
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	100 //
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	101 // Finds if the given string is a substring of this symbol's utf8 bytes.
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	102 // Return -1 on failure. Otherwise return the first index where str occurs.
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	103 int Symbol::index_of_at(int i, const char* str, int len) const {
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	104 assert(i >= 0 && i <= utf8_length(), "oob");
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	105 if (len <= 0) return 0;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	106 char first_char = str[0];
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	107 address bytes = (address) ((Symbol*)this)->base();
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	108 address limit = bytes + utf8_length() - len; // inclusive limit
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	109 address scan = bytes + i;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	110 if (scan > limit)
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	111 return -1;
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 6197 diff changeset	112 for (; scan <= limit; scan++) {
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	113 scan = (address) memchr(scan, first_char, (limit + 1 - scan));
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	114 if (scan == NULL)
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	115 return -1; // not found
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	116 assert(scan >= bytes+i && scan <= limit, "scan oob");
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	117 if (memcmp(scan, str, len) == 0)
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	118 return (int)(scan - bytes);
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	119 }
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 6197 diff changeset	120 return -1;
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	121 }
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	122
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	123
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	124 char* Symbol::as_C_string(char* buf, int size) const {
0 a61af66fc99e Initial load duke parents: diff changeset	125 if (size > 0) {
a61af66fc99e Initial load duke parents: diff changeset	126 int len = MIN2(size - 1, utf8_length());
a61af66fc99e Initial load duke parents: diff changeset	127 for (int i = 0; i < len; i++) {
a61af66fc99e Initial load duke parents: diff changeset	128 buf[i] = byte_at(i);
a61af66fc99e Initial load duke parents: diff changeset	129 }
a61af66fc99e Initial load duke parents: diff changeset	130 buf[len] = '\0';
a61af66fc99e Initial load duke parents: diff changeset	131 }
a61af66fc99e Initial load duke parents: diff changeset	132 return buf;
a61af66fc99e Initial load duke parents: diff changeset	133 }
a61af66fc99e Initial load duke parents: diff changeset	134
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	135 char* Symbol::as_C_string() const {
0 a61af66fc99e Initial load duke parents: diff changeset	136 int len = utf8_length();
a61af66fc99e Initial load duke parents: diff changeset	137 char* str = NEW_RESOURCE_ARRAY(char, len + 1);
a61af66fc99e Initial load duke parents: diff changeset	138 return as_C_string(str, len + 1);
a61af66fc99e Initial load duke parents: diff changeset	139 }
a61af66fc99e Initial load duke parents: diff changeset	140
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	141 char* Symbol::as_C_string_flexible_buffer(Thread* t,
0 a61af66fc99e Initial load duke parents: diff changeset	142 char* buf, int size) const {
a61af66fc99e Initial load duke parents: diff changeset	143 char* str;
a61af66fc99e Initial load duke parents: diff changeset	144 int len = utf8_length();
a61af66fc99e Initial load duke parents: diff changeset	145 int buf_len = len + 1;
a61af66fc99e Initial load duke parents: diff changeset	146 if (size < buf_len) {
a61af66fc99e Initial load duke parents: diff changeset	147 str = NEW_RESOURCE_ARRAY(char, buf_len);
a61af66fc99e Initial load duke parents: diff changeset	148 } else {
a61af66fc99e Initial load duke parents: diff changeset	149 str = buf;
a61af66fc99e Initial load duke parents: diff changeset	150 }
a61af66fc99e Initial load duke parents: diff changeset	151 return as_C_string(str, buf_len);
a61af66fc99e Initial load duke parents: diff changeset	152 }
a61af66fc99e Initial load duke parents: diff changeset	153
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	154 void Symbol::print_symbol_on(outputStream* st) const {
0 a61af66fc99e Initial load duke parents: diff changeset	155 st = st ? st : tty;
222 2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	156 int length = UTF8::unicode_length((const char*)bytes(), utf8_length());
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	157 const char ptr = (const char )bytes();
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	158 jchar value;
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	159 for (int index = 0; index < length; index++) {
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	160 ptr = UTF8::next(ptr, &value);
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	161 if (value >= 32 && value < 127 \|\| value == '\'' \|\| value == '\\') {
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	162 st->put(value);
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	163 } else {
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	164 st->print("\\u%04x", value);
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	165 }
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	166 }
0 a61af66fc99e Initial load duke parents: diff changeset	167 }
a61af66fc99e Initial load duke parents: diff changeset	168
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	169 jchar* Symbol::as_unicode(int& length) const {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	170 Symbol* this_ptr = (Symbol*)this;
0 a61af66fc99e Initial load duke parents: diff changeset	171 length = UTF8::unicode_length((char*)this_ptr->bytes(), utf8_length());
a61af66fc99e Initial load duke parents: diff changeset	172 jchar* result = NEW_RESOURCE_ARRAY(jchar, length);
a61af66fc99e Initial load duke parents: diff changeset	173 if (length > 0) {
a61af66fc99e Initial load duke parents: diff changeset	174 UTF8::convert_to_unicode((char*)this_ptr->bytes(), result, length);
a61af66fc99e Initial load duke parents: diff changeset	175 }
a61af66fc99e Initial load duke parents: diff changeset	176 return result;
a61af66fc99e Initial load duke parents: diff changeset	177 }
a61af66fc99e Initial load duke parents: diff changeset	178
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	179 const char* Symbol::as_klass_external_name(char* buf, int size) const {
0 a61af66fc99e Initial load duke parents: diff changeset	180 if (size > 0) {
a61af66fc99e Initial load duke parents: diff changeset	181 char* str = as_C_string(buf, size);
a61af66fc99e Initial load duke parents: diff changeset	182 int length = (int)strlen(str);
a61af66fc99e Initial load duke parents: diff changeset	183 // Turn all '/'s into '.'s (also for array klasses)
a61af66fc99e Initial load duke parents: diff changeset	184 for (int index = 0; index < length; index++) {
a61af66fc99e Initial load duke parents: diff changeset	185 if (str[index] == '/') {
a61af66fc99e Initial load duke parents: diff changeset	186 str[index] = '.';
a61af66fc99e Initial load duke parents: diff changeset	187 }
a61af66fc99e Initial load duke parents: diff changeset	188 }
a61af66fc99e Initial load duke parents: diff changeset	189 return str;
a61af66fc99e Initial load duke parents: diff changeset	190 } else {
a61af66fc99e Initial load duke parents: diff changeset	191 return buf;
a61af66fc99e Initial load duke parents: diff changeset	192 }
a61af66fc99e Initial load duke parents: diff changeset	193 }
a61af66fc99e Initial load duke parents: diff changeset	194
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	195 const char* Symbol::as_klass_external_name() const {
0 a61af66fc99e Initial load duke parents: diff changeset	196 char* str = as_C_string();
a61af66fc99e Initial load duke parents: diff changeset	197 int length = (int)strlen(str);
a61af66fc99e Initial load duke parents: diff changeset	198 // Turn all '/'s into '.'s (also for array klasses)
a61af66fc99e Initial load duke parents: diff changeset	199 for (int index = 0; index < length; index++) {
a61af66fc99e Initial load duke parents: diff changeset	200 if (str[index] == '/') {
a61af66fc99e Initial load duke parents: diff changeset	201 str[index] = '.';
a61af66fc99e Initial load duke parents: diff changeset	202 }
a61af66fc99e Initial load duke parents: diff changeset	203 }
a61af66fc99e Initial load duke parents: diff changeset	204 return str;
a61af66fc99e Initial load duke parents: diff changeset	205 }
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	206
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	207 // Alternate hashing for unbalanced symbol tables.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	208 unsigned int Symbol::new_hash(jint seed) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	209 ResourceMark rm;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	210 // Use alternate hashing algorithm on this symbol.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	211 return AltHashing::murmur3_32(seed, (const jbyte*)as_C_string(), utf8_length());
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	212 }
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	213
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	214 void Symbol::print_on(outputStream* st) const {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	215 if (this == NULL) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	216 st->print_cr("NULL");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	217 } else {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	218 st->print("Symbol: '");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	219 print_symbol_on(st);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	220 st->print("'");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	221 st->print(" count %d", refcount());
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	222 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	223 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	224
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	225 // The print_value functions are present in all builds, to support the
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	226 // disassembler and error reporting.
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	227 void Symbol::print_value_on(outputStream* st) const {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	228 if (this == NULL) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	229 st->print("NULL");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	230 } else {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	231 st->print("'");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	232 for (int i = 0; i < utf8_length(); i++) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	233 st->print("%c", byte_at(i));
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	234 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	235 st->print("'");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	236 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	237 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	238
5979 fc9d8850ab8b 7150058: Allocate symbols from null boot loader to an arena for NMT coleenp parents: 2426 diff changeset	239 // SymbolTable prints this in its statistics
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	240 NOT_PRODUCT(int Symbol::_total_count = 0;)

Mercurial > hg > truffle

annotate src/share/vm/oops/symbol.cpp @ 6725:da91efe96a93