graal-compiler: src/share/vm/oops/symbol.cpp annotate

annotate src/share/vm/oops/symbol.cpp @ 10185:d50cc62e94ff

8012715: G1: GraphKit accesses PtrQueue::_index as int but is size_t Summary: In graphKit INT operations were generated to access PtrQueue::_index which has type size_t. This is 64 bit on 64-bit machines. No problems occur on little endian machines as long as the index fits into 32 bit, but on big endian machines the upper part is read, which is zero. This leads to unnecessary branches to the slow path in the runtime. Reviewed-by: twisti, johnc Contributed-by: Martin Doerr <martin.doerr@sap.com>

author	johnc
date	Wed, 24 Apr 2013 14:48:43 -0700
parents	8c03fc47511d
children	a1ebd310d5c1

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
8675 63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	2 * Copyright (c) 1997, 2013, 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"
8675 63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	30 #include "runtime/atomic.inline.hpp"
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	31 #include "runtime/os.hpp"
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	32 #include "memory/allocation.inline.hpp"
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	33 #include "memory/resourceArea.hpp"
0 a61af66fc99e Initial load duke parents: diff changeset	34
5979 fc9d8850ab8b 7150058: Allocate symbols from null boot loader to an arena for NMT coleenp parents: 2426 diff changeset	35 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	36 _identity_hash = os::random();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	37 for (int i = 0; i < _length; i++) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	38 byte_at_put(i, name[i]);
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 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	41
5979 fc9d8850ab8b 7150058: Allocate symbols from null boot loader to an arena for NMT coleenp parents: 2426 diff changeset	42 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	43 int alloc_size = size(len)*HeapWordSize;
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 5979 diff changeset	44 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	45 return res;
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
fc9d8850ab8b 7150058: Allocate symbols from null boot loader to an arena for NMT coleenp parents: 2426 diff changeset	48 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	49 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	50 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	51 return res;
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	52 }
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	53
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	54 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	55 address res;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	56 int alloc_size = size(len)*HeapWordSize;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	57 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	58 Metaspace::NonClassType, CHECK_NULL);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	59 return res;
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
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	62 void Symbol::operator delete(void *p) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	63 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	64 FreeHeap(p);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	65 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	66
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	67 // ------------------------------------------------------------------
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	68 // Symbol::equals
1138 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 // 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	71 bool Symbol::equals(const char* str, int len) const {
0 a61af66fc99e Initial load duke parents: diff changeset	72 int l = utf8_length();
a61af66fc99e Initial load duke parents: diff changeset	73 if (l != len) return false;
a61af66fc99e Initial load duke parents: diff changeset	74 while (l-- > 0) {
a61af66fc99e Initial load duke parents: diff changeset	75 if (str[l] != (char) byte_at(l))
a61af66fc99e Initial load duke parents: diff changeset	76 return false;
a61af66fc99e Initial load duke parents: diff changeset	77 }
a61af66fc99e Initial load duke parents: diff changeset	78 assert(l == -1, "we should be at the beginning");
a61af66fc99e Initial load duke parents: diff changeset	79 return true;
a61af66fc99e Initial load duke parents: diff changeset	80 }
a61af66fc99e Initial load duke parents: diff changeset	81
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	82
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	83 // ------------------------------------------------------------------
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	84 // Symbol::starts_with
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	85 //
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	86 // 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	87 // length.
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	88 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	89 if (len > utf8_length()) return false;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	90 while (len-- > 0) {
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	91 if (prefix[len] != (char) byte_at(len))
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	92 return false;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	93 }
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	94 assert(len == -1, "we should be at the beginning");
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	95 return true;
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 // Symbol::index_of
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	101 //
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	102 // 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	103 // 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	104 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	105 assert(i >= 0 && i <= utf8_length(), "oob");
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	106 if (len <= 0) return 0;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	107 char first_char = str[0];
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	108 address bytes = (address) ((Symbol*)this)->base();
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	109 address limit = bytes + utf8_length() - len; // inclusive limit
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	110 address scan = bytes + i;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	111 if (scan > limit)
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	112 return -1;
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 6197 diff changeset	113 for (; scan <= limit; scan++) {
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	114 scan = (address) memchr(scan, first_char, (limit + 1 - scan));
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	115 if (scan == NULL)
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	116 return -1; // not found
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	117 assert(scan >= bytes+i && scan <= limit, "scan oob");
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	118 if (memcmp(scan, str, len) == 0)
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	119 return (int)(scan - bytes);
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	120 }
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 6197 diff changeset	121 return -1;
1138 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
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	124
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	125 char* Symbol::as_C_string(char* buf, int size) const {
0 a61af66fc99e Initial load duke parents: diff changeset	126 if (size > 0) {
a61af66fc99e Initial load duke parents: diff changeset	127 int len = MIN2(size - 1, utf8_length());
a61af66fc99e Initial load duke parents: diff changeset	128 for (int i = 0; i < len; i++) {
a61af66fc99e Initial load duke parents: diff changeset	129 buf[i] = byte_at(i);
a61af66fc99e Initial load duke parents: diff changeset	130 }
a61af66fc99e Initial load duke parents: diff changeset	131 buf[len] = '\0';
a61af66fc99e Initial load duke parents: diff changeset	132 }
a61af66fc99e Initial load duke parents: diff changeset	133 return buf;
a61af66fc99e Initial load duke parents: diff changeset	134 }
a61af66fc99e Initial load duke parents: diff changeset	135
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	136 char* Symbol::as_C_string() const {
0 a61af66fc99e Initial load duke parents: diff changeset	137 int len = utf8_length();
a61af66fc99e Initial load duke parents: diff changeset	138 char* str = NEW_RESOURCE_ARRAY(char, len + 1);
a61af66fc99e Initial load duke parents: diff changeset	139 return as_C_string(str, len + 1);
a61af66fc99e Initial load duke parents: diff changeset	140 }
a61af66fc99e Initial load duke parents: diff changeset	141
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	142 char* Symbol::as_C_string_flexible_buffer(Thread* t,
0 a61af66fc99e Initial load duke parents: diff changeset	143 char* buf, int size) const {
a61af66fc99e Initial load duke parents: diff changeset	144 char* str;
a61af66fc99e Initial load duke parents: diff changeset	145 int len = utf8_length();
a61af66fc99e Initial load duke parents: diff changeset	146 int buf_len = len + 1;
a61af66fc99e Initial load duke parents: diff changeset	147 if (size < buf_len) {
a61af66fc99e Initial load duke parents: diff changeset	148 str = NEW_RESOURCE_ARRAY(char, buf_len);
a61af66fc99e Initial load duke parents: diff changeset	149 } else {
a61af66fc99e Initial load duke parents: diff changeset	150 str = buf;
a61af66fc99e Initial load duke parents: diff changeset	151 }
a61af66fc99e Initial load duke parents: diff changeset	152 return as_C_string(str, buf_len);
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 void Symbol::print_symbol_on(outputStream* st) const {
7990 fcc9e7681d63 8006410: allocating without ResourceMark when CompileCommand was specified vlivanov parents: 6972 diff changeset	156 ResourceMark rm;
0 a61af66fc99e Initial load duke parents: diff changeset	157 st = st ? st : tty;
6972 bd7a7ce2e264 6830717: replay of compilations would help with debugging minqi parents: 6725 diff changeset	158 st->print("%s", as_quoted_ascii());
bd7a7ce2e264 6830717: replay of compilations would help with debugging minqi parents: 6725 diff changeset	159 }
bd7a7ce2e264 6830717: replay of compilations would help with debugging minqi parents: 6725 diff changeset	160
bd7a7ce2e264 6830717: replay of compilations would help with debugging minqi parents: 6725 diff changeset	161 char* Symbol::as_quoted_ascii() const {
bd7a7ce2e264 6830717: replay of compilations would help with debugging minqi parents: 6725 diff changeset	162 const char ptr = (const char )&_body[0];
bd7a7ce2e264 6830717: replay of compilations would help with debugging minqi parents: 6725 diff changeset	163 int quoted_length = UTF8::quoted_ascii_length(ptr, utf8_length());
bd7a7ce2e264 6830717: replay of compilations would help with debugging minqi parents: 6725 diff changeset	164 char* result = NEW_RESOURCE_ARRAY(char, quoted_length + 1);
8851 8c03fc47511d 8011048: Possible reading from unmapped memory in UTF8::as_quoted_ascii() iklam parents: 8675 diff changeset	165 UTF8::as_quoted_ascii(ptr, utf8_length(), result, quoted_length + 1);
6972 bd7a7ce2e264 6830717: replay of compilations would help with debugging minqi parents: 6725 diff changeset	166 return result;
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
8675 63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	214 void Symbol::increment_refcount() {
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	215 // Only increment the refcount if positive. If negative either
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	216 // overflow has occurred or it is a permanent symbol in a read only
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	217 // shared archive.
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	218 if (_refcount >= 0) {
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	219 Atomic::inc(&_refcount);
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	220 NOT_PRODUCT(Atomic::inc(&_total_count);)
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	221 }
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	222 }
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	223
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	224 void Symbol::decrement_refcount() {
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	225 if (_refcount >= 0) {
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	226 Atomic::dec(&_refcount);
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	227 #ifdef ASSERT
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	228 if (_refcount < 0) {
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	229 print();
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	230 assert(false, "reference count underflow for symbol");
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	231 }
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	232 #endif
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	233 }
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	234 }
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	235
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	236 void Symbol::print_on(outputStream* st) const {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	237 if (this == NULL) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	238 st->print_cr("NULL");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	239 } else {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	240 st->print("Symbol: '");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	241 print_symbol_on(st);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	242 st->print("'");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	243 st->print(" count %d", refcount());
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	244 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	245 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	246
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	247 // 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	248 // disassembler and error reporting.
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	249 void Symbol::print_value_on(outputStream* st) const {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	250 if (this == NULL) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	251 st->print("NULL");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	252 } else {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	253 st->print("'");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	254 for (int i = 0; i < utf8_length(); i++) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	255 st->print("%c", byte_at(i));
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	256 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	257 st->print("'");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	258 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	259 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	260
5979 fc9d8850ab8b 7150058: Allocate symbols from null boot loader to an arena for NMT coleenp parents: 2426 diff changeset	261 // SymbolTable prints this in its statistics
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	262 NOT_PRODUCT(int Symbol::_total_count = 0;)

Mercurial > hg > graal-compiler

annotate src/share/vm/oops/symbol.cpp @ 10185:d50cc62e94ff