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

annotate src/share/vm/oops/symbol.cpp @ 2460:ed69575596ac

6981791: remove experimental code for JSR 292 Reviewed-by: twisti

author	jrose
date	Thu, 07 Apr 2011 17:02:30 -0700
parents	3582bf76420e
children	1d1603768966

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	2 * Copyright (c) 1997, 2009, 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"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	27 #include "oops/oop.inline.hpp"
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	28 #include "oops/symbol.hpp"
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	29 #include "runtime/os.hpp"
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	30 #include "memory/allocation.inline.hpp"
0 a61af66fc99e Initial load duke parents: diff changeset	31
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	32 Symbol::Symbol(const u1* name, int length) : _refcount(0), _length(length) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	33 _identity_hash = os::random();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	34 for (int i = 0; i < _length; i++) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	35 byte_at_put(i, name[i]);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	36 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	37 }
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 void* Symbol::operator new(size_t size, int len) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	40 return (void ) AllocateHeap(object_size(len) HeapWordSize, "symbol");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	41 }
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	42
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	43 // ------------------------------------------------------------------
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	44 // Symbol::equals
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	45 //
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	46 // 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	47 bool Symbol::equals(const char* str, int len) const {
0 a61af66fc99e Initial load duke parents: diff changeset	48 int l = utf8_length();
a61af66fc99e Initial load duke parents: diff changeset	49 if (l != len) return false;
a61af66fc99e Initial load duke parents: diff changeset	50 while (l-- > 0) {
a61af66fc99e Initial load duke parents: diff changeset	51 if (str[l] != (char) byte_at(l))
a61af66fc99e Initial load duke parents: diff changeset	52 return false;
a61af66fc99e Initial load duke parents: diff changeset	53 }
a61af66fc99e Initial load duke parents: diff changeset	54 assert(l == -1, "we should be at the beginning");
a61af66fc99e Initial load duke parents: diff changeset	55 return true;
a61af66fc99e Initial load duke parents: diff changeset	56 }
a61af66fc99e Initial load duke parents: diff changeset	57
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	58
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	59 // ------------------------------------------------------------------
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	60 // Symbol::starts_with
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	61 //
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	62 // 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	63 // length.
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	64 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	65 if (len > utf8_length()) return false;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	66 while (len-- > 0) {
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	67 if (prefix[len] != (char) byte_at(len))
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	68 return false;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	69 }
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	70 assert(len == -1, "we should be at the beginning");
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	71 return true;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	72 }
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	73
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	74
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	75 // ------------------------------------------------------------------
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	76 // Symbol::index_of
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	77 //
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	78 // 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	79 // 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	80 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	81 assert(i >= 0 && i <= utf8_length(), "oob");
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	82 if (len <= 0) return 0;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	83 char first_char = str[0];
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	84 address bytes = (address) ((Symbol*)this)->base();
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	85 address limit = bytes + utf8_length() - len; // inclusive limit
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	86 address scan = bytes + i;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	87 if (scan > limit)
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	88 return -1;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	89 for (;;) {
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	90 scan = (address) memchr(scan, first_char, (limit + 1 - scan));
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	91 if (scan == NULL)
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	92 return -1; // not found
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	93 assert(scan >= bytes+i && scan <= limit, "scan oob");
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	94 if (memcmp(scan, str, len) == 0)
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	95 return (int)(scan - bytes);
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
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	99
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	100 char* Symbol::as_C_string(char* buf, int size) const {
0 a61af66fc99e Initial load duke parents: diff changeset	101 if (size > 0) {
a61af66fc99e Initial load duke parents: diff changeset	102 int len = MIN2(size - 1, utf8_length());
a61af66fc99e Initial load duke parents: diff changeset	103 for (int i = 0; i < len; i++) {
a61af66fc99e Initial load duke parents: diff changeset	104 buf[i] = byte_at(i);
a61af66fc99e Initial load duke parents: diff changeset	105 }
a61af66fc99e Initial load duke parents: diff changeset	106 buf[len] = '\0';
a61af66fc99e Initial load duke parents: diff changeset	107 }
a61af66fc99e Initial load duke parents: diff changeset	108 return buf;
a61af66fc99e Initial load duke parents: diff changeset	109 }
a61af66fc99e Initial load duke parents: diff changeset	110
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	111 char* Symbol::as_C_string() const {
0 a61af66fc99e Initial load duke parents: diff changeset	112 int len = utf8_length();
a61af66fc99e Initial load duke parents: diff changeset	113 char* str = NEW_RESOURCE_ARRAY(char, len + 1);
a61af66fc99e Initial load duke parents: diff changeset	114 return as_C_string(str, len + 1);
a61af66fc99e Initial load duke parents: diff changeset	115 }
a61af66fc99e Initial load duke parents: diff changeset	116
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	117 char* Symbol::as_C_string_flexible_buffer(Thread* t,
0 a61af66fc99e Initial load duke parents: diff changeset	118 char* buf, int size) const {
a61af66fc99e Initial load duke parents: diff changeset	119 char* str;
a61af66fc99e Initial load duke parents: diff changeset	120 int len = utf8_length();
a61af66fc99e Initial load duke parents: diff changeset	121 int buf_len = len + 1;
a61af66fc99e Initial load duke parents: diff changeset	122 if (size < buf_len) {
a61af66fc99e Initial load duke parents: diff changeset	123 str = NEW_RESOURCE_ARRAY(char, buf_len);
a61af66fc99e Initial load duke parents: diff changeset	124 } else {
a61af66fc99e Initial load duke parents: diff changeset	125 str = buf;
a61af66fc99e Initial load duke parents: diff changeset	126 }
a61af66fc99e Initial load duke parents: diff changeset	127 return as_C_string(str, buf_len);
a61af66fc99e Initial load duke parents: diff changeset	128 }
a61af66fc99e Initial load duke parents: diff changeset	129
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	130 void Symbol::print_symbol_on(outputStream* st) const {
0 a61af66fc99e Initial load duke parents: diff changeset	131 st = st ? st : tty;
222 2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	132 int length = UTF8::unicode_length((const char*)bytes(), utf8_length());
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	133 const char ptr = (const char )bytes();
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	134 jchar value;
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	135 for (int index = 0; index < length; index++) {
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	136 ptr = UTF8::next(ptr, &value);
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	137 if (value >= 32 && value < 127 \|\| value == '\'' \|\| value == '\\') {
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	138 st->put(value);
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	139 } else {
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	140 st->print("\\u%04x", value);
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	141 }
2a1a77d3458f 6718676: putback for 6604014 is incomplete never parents: 0 diff changeset	142 }
0 a61af66fc99e Initial load duke parents: diff changeset	143 }
a61af66fc99e Initial load duke parents: diff changeset	144
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	145 jchar* Symbol::as_unicode(int& length) const {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	146 Symbol* this_ptr = (Symbol*)this;
0 a61af66fc99e Initial load duke parents: diff changeset	147 length = UTF8::unicode_length((char*)this_ptr->bytes(), utf8_length());
a61af66fc99e Initial load duke parents: diff changeset	148 jchar* result = NEW_RESOURCE_ARRAY(jchar, length);
a61af66fc99e Initial load duke parents: diff changeset	149 if (length > 0) {
a61af66fc99e Initial load duke parents: diff changeset	150 UTF8::convert_to_unicode((char*)this_ptr->bytes(), result, length);
a61af66fc99e Initial load duke parents: diff changeset	151 }
a61af66fc99e Initial load duke parents: diff changeset	152 return result;
a61af66fc99e Initial load duke parents: diff changeset	153 }
a61af66fc99e Initial load duke parents: diff changeset	154
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	155 const char* Symbol::as_klass_external_name(char* buf, int size) const {
0 a61af66fc99e Initial load duke parents: diff changeset	156 if (size > 0) {
a61af66fc99e Initial load duke parents: diff changeset	157 char* str = as_C_string(buf, size);
a61af66fc99e Initial load duke parents: diff changeset	158 int length = (int)strlen(str);
a61af66fc99e Initial load duke parents: diff changeset	159 // Turn all '/'s into '.'s (also for array klasses)
a61af66fc99e Initial load duke parents: diff changeset	160 for (int index = 0; index < length; index++) {
a61af66fc99e Initial load duke parents: diff changeset	161 if (str[index] == '/') {
a61af66fc99e Initial load duke parents: diff changeset	162 str[index] = '.';
a61af66fc99e Initial load duke parents: diff changeset	163 }
a61af66fc99e Initial load duke parents: diff changeset	164 }
a61af66fc99e Initial load duke parents: diff changeset	165 return str;
a61af66fc99e Initial load duke parents: diff changeset	166 } else {
a61af66fc99e Initial load duke parents: diff changeset	167 return buf;
a61af66fc99e Initial load duke parents: diff changeset	168 }
a61af66fc99e Initial load duke parents: diff changeset	169 }
a61af66fc99e Initial load duke parents: diff changeset	170
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	171 const char* Symbol::as_klass_external_name() const {
0 a61af66fc99e Initial load duke parents: diff changeset	172 char* str = as_C_string();
a61af66fc99e Initial load duke parents: diff changeset	173 int length = (int)strlen(str);
a61af66fc99e Initial load duke parents: diff changeset	174 // Turn all '/'s into '.'s (also for array klasses)
a61af66fc99e Initial load duke parents: diff changeset	175 for (int index = 0; index < length; index++) {
a61af66fc99e Initial load duke parents: diff changeset	176 if (str[index] == '/') {
a61af66fc99e Initial load duke parents: diff changeset	177 str[index] = '.';
a61af66fc99e Initial load duke parents: diff changeset	178 }
a61af66fc99e Initial load duke parents: diff changeset	179 }
a61af66fc99e Initial load duke parents: diff changeset	180 return str;
a61af66fc99e Initial load duke parents: diff changeset	181 }
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	182
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	183
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	184 void Symbol::print_on(outputStream* st) const {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	185 if (this == NULL) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	186 st->print_cr("NULL");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	187 } else {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	188 st->print("Symbol: '");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	189 print_symbol_on(st);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	190 st->print("'");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	191 st->print(" count %d", refcount());
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	192 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	193 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	194
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	195 // 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	196 // disassembler and error reporting.
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	197 void Symbol::print_value_on(outputStream* st) const {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	198 if (this == NULL) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	199 st->print("NULL");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	200 } else {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	201 st->print("'");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	202 for (int i = 0; i < utf8_length(); i++) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	203 st->print("%c", byte_at(i));
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	204 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	205 st->print("'");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	206 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	207 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	208
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	209 void Symbol::increment_refcount() {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	210 // Only increment the refcount if positive. If negative either
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	211 // overflow has occurred or it is a permanent symbol in a read only
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	212 // shared archive.
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	213 if (_refcount >= 0) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	214 Atomic::inc(&_refcount);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	215 NOT_PRODUCT(Atomic::inc(&_total_count);)
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	216 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	217 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	218
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	219 void Symbol::decrement_refcount() {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	220 if (_refcount >= 0) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	221 Atomic::dec(&_refcount);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	222 #ifdef ASSERT
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	223 if (_refcount < 0) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	224 print();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	225 assert(false, "reference count underflow for symbol");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	226 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	227 #endif
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	228 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	229 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	230
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	231 NOT_PRODUCT(int Symbol::_total_count = 0;)

Mercurial > hg > truffle

annotate src/share/vm/oops/symbol.cpp @ 2460:ed69575596ac