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

annotate src/share/vm/oops/symbol.cpp @ 17716:cdb71841f4bc

6498581: ThreadInterruptTest3 produces wrong output on Windows Summary: There is race condition between os::interrupt and os::is_interrupted on Windows. In JVM_Sleep(Thread.sleep), check if thread gets interrupted, it may see interrupted but not really interrupted so cause spurious waking up (early return from sleep). Fix by checking if interrupt event really gets set thus prevent false return. For intrinsic of _isInterrupted, on Windows, go fastpath only on bit not set. Reviewed-by: acorn, kvn Contributed-by: david.holmes@oracle.com, yumin.qi@oracle.com

author	minqi
date	Wed, 26 Feb 2014 15:20:41 -0800
parents	f9e35a9dc8c7
children	4ca6dc0799b6

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
17709 f9e35a9dc8c7 8033792: AltHashing used jint for imprecise bit shifting minqi parents: 12146 diff changeset	2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
0 a61af66fc99e Initial load duke parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load duke parents: diff changeset	4 *
a61af66fc99e Initial load duke parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load duke parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load duke parents: diff changeset	7 * published by the Free Software Foundation.
a61af66fc99e Initial load duke parents: diff changeset	8 *
a61af66fc99e Initial load duke parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load duke parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load duke parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load duke parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load duke parents: diff changeset	13 * accompanied this code).
a61af66fc99e Initial load duke parents: diff changeset	14 *
a61af66fc99e Initial load duke parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load duke parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load duke parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load duke parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 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
11033 d9eed26d638a 8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes iklam parents: 10376 diff changeset	35 Symbol::Symbol(const u1* name, int length, int refcount) {
d9eed26d638a 8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes iklam parents: 10376 diff changeset	36 _refcount = refcount;
d9eed26d638a 8009575: Reduce Symbol::_refcount from 4 bytes to 2 bytes iklam parents: 10376 diff changeset	37 _length = length;
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	38 _identity_hash = os::random();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	39 for (int i = 0; i < _length; i++) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	40 byte_at_put(i, name[i]);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	41 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	42 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	43
12146 9758d9f36299 8021954: VM SIGSEGV during classloading on MacOS; hs_err_pid file produced coleenp parents: 11033 diff changeset	44 void* Symbol::operator new(size_t sz, int len, TRAPS) throw() {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	45 int alloc_size = size(len)*HeapWordSize;
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 5979 diff changeset	46 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	47 return res;
fc9d8850ab8b 7150058: Allocate symbols from null boot loader to an arena for NMT coleenp parents: 2426 diff changeset	48 }
fc9d8850ab8b 7150058: Allocate symbols from null boot loader to an arena for NMT coleenp parents: 2426 diff changeset	49
12146 9758d9f36299 8021954: VM SIGSEGV during classloading on MacOS; hs_err_pid file produced coleenp parents: 11033 diff changeset	50 void* Symbol::operator new(size_t sz, int len, Arena* arena, TRAPS) throw() {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	51 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	52 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	53 return res;
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	54 }
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	55
12146 9758d9f36299 8021954: VM SIGSEGV during classloading on MacOS; hs_err_pid file produced coleenp parents: 11033 diff changeset	56 void* Symbol::operator new(size_t sz, int len, ClassLoaderData* loader_data, TRAPS) throw() {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	57 address res;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	58 int alloc_size = size(len)*HeapWordSize;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	59 res = (address) Metaspace::allocate(loader_data, size(len), true,
10376 a1ebd310d5c1 8014912: Restore PrintSharedSpaces functionality after NPG iklam parents: 8851 diff changeset	60 MetaspaceObj::SymbolType, CHECK_NULL);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	61 return res;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	62 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	63
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	64 void Symbol::operator delete(void *p) {
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	65 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	66 FreeHeap(p);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	67 }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	68
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	69 // ------------------------------------------------------------------
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	70 // Symbol::equals
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	71 //
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	72 // 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	73 bool Symbol::equals(const char* str, int len) const {
0 a61af66fc99e Initial load duke parents: diff changeset	74 int l = utf8_length();
a61af66fc99e Initial load duke parents: diff changeset	75 if (l != len) return false;
a61af66fc99e Initial load duke parents: diff changeset	76 while (l-- > 0) {
a61af66fc99e Initial load duke parents: diff changeset	77 if (str[l] != (char) byte_at(l))
a61af66fc99e Initial load duke parents: diff changeset	78 return false;
a61af66fc99e Initial load duke parents: diff changeset	79 }
a61af66fc99e Initial load duke parents: diff changeset	80 assert(l == -1, "we should be at the beginning");
a61af66fc99e Initial load duke parents: diff changeset	81 return true;
a61af66fc99e Initial load duke parents: diff changeset	82 }
a61af66fc99e Initial load duke parents: diff changeset	83
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 // ------------------------------------------------------------------
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	86 // Symbol::starts_with
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	87 //
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	88 // 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	89 // length.
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	90 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	91 if (len > utf8_length()) return false;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	92 while (len-- > 0) {
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	93 if (prefix[len] != (char) byte_at(len))
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	94 return false;
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 assert(len == -1, "we should be at the beginning");
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	97 return true;
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
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 // ------------------------------------------------------------------
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	102 // Symbol::index_of
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	103 //
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	104 // 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	105 // 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	106 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	107 assert(i >= 0 && i <= utf8_length(), "oob");
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	108 if (len <= 0) return 0;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	109 char first_char = str[0];
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	110 address bytes = (address) ((Symbol*)this)->base();
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	111 address limit = bytes + utf8_length() - len; // inclusive limit
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	112 address scan = bytes + i;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	113 if (scan > limit)
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	114 return -1;
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 6197 diff changeset	115 for (; scan <= limit; scan++) {
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	116 scan = (address) memchr(scan, first_char, (limit + 1 - scan));
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	117 if (scan == NULL)
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	118 return -1; // not found
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	119 assert(scan >= bytes+i && scan <= limit, "scan oob");
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	120 if (memcmp(scan, str, len) == 0)
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	121 return (int)(scan - bytes);
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	122 }
6266 1d7922586cf6 7023639: JSR 292 method handle invocation needs a fast path for compiled code twisti parents: 6197 diff changeset	123 return -1;
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	124 }
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	125
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 222 diff changeset	126
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	127 char* Symbol::as_C_string(char* buf, int size) const {
0 a61af66fc99e Initial load duke parents: diff changeset	128 if (size > 0) {
a61af66fc99e Initial load duke parents: diff changeset	129 int len = MIN2(size - 1, utf8_length());
a61af66fc99e Initial load duke parents: diff changeset	130 for (int i = 0; i < len; i++) {
a61af66fc99e Initial load duke parents: diff changeset	131 buf[i] = byte_at(i);
a61af66fc99e Initial load duke parents: diff changeset	132 }
a61af66fc99e Initial load duke parents: diff changeset	133 buf[len] = '\0';
a61af66fc99e Initial load duke parents: diff changeset	134 }
a61af66fc99e Initial load duke parents: diff changeset	135 return buf;
a61af66fc99e Initial load duke parents: diff changeset	136 }
a61af66fc99e Initial load duke parents: diff changeset	137
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	138 char* Symbol::as_C_string() const {
0 a61af66fc99e Initial load duke parents: diff changeset	139 int len = utf8_length();
a61af66fc99e Initial load duke parents: diff changeset	140 char* str = NEW_RESOURCE_ARRAY(char, len + 1);
a61af66fc99e Initial load duke parents: diff changeset	141 return as_C_string(str, len + 1);
a61af66fc99e Initial load duke parents: diff changeset	142 }
a61af66fc99e Initial load duke parents: diff changeset	143
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	144 char* Symbol::as_C_string_flexible_buffer(Thread* t,
0 a61af66fc99e Initial load duke parents: diff changeset	145 char* buf, int size) const {
a61af66fc99e Initial load duke parents: diff changeset	146 char* str;
a61af66fc99e Initial load duke parents: diff changeset	147 int len = utf8_length();
a61af66fc99e Initial load duke parents: diff changeset	148 int buf_len = len + 1;
a61af66fc99e Initial load duke parents: diff changeset	149 if (size < buf_len) {
a61af66fc99e Initial load duke parents: diff changeset	150 str = NEW_RESOURCE_ARRAY(char, buf_len);
a61af66fc99e Initial load duke parents: diff changeset	151 } else {
a61af66fc99e Initial load duke parents: diff changeset	152 str = buf;
a61af66fc99e Initial load duke parents: diff changeset	153 }
a61af66fc99e Initial load duke parents: diff changeset	154 return as_C_string(str, buf_len);
a61af66fc99e Initial load duke parents: diff changeset	155 }
a61af66fc99e Initial load duke parents: diff changeset	156
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	157 void Symbol::print_symbol_on(outputStream* st) const {
7990 fcc9e7681d63 8006410: allocating without ResourceMark when CompileCommand was specified vlivanov parents: 6972 diff changeset	158 ResourceMark rm;
0 a61af66fc99e Initial load duke parents: diff changeset	159 st = st ? st : tty;
6972 bd7a7ce2e264 6830717: replay of compilations would help with debugging minqi parents: 6725 diff changeset	160 st->print("%s", as_quoted_ascii());
bd7a7ce2e264 6830717: replay of compilations would help with debugging minqi parents: 6725 diff changeset	161 }
bd7a7ce2e264 6830717: replay of compilations would help with debugging minqi parents: 6725 diff changeset	162
bd7a7ce2e264 6830717: replay of compilations would help with debugging minqi parents: 6725 diff changeset	163 char* Symbol::as_quoted_ascii() const {
bd7a7ce2e264 6830717: replay of compilations would help with debugging minqi parents: 6725 diff changeset	164 const char ptr = (const char )&_body[0];
bd7a7ce2e264 6830717: replay of compilations would help with debugging minqi parents: 6725 diff changeset	165 int quoted_length = UTF8::quoted_ascii_length(ptr, utf8_length());
bd7a7ce2e264 6830717: replay of compilations would help with debugging minqi parents: 6725 diff changeset	166 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	167 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	168 return result;
0 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 jchar* Symbol::as_unicode(int& length) const {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	172 Symbol* this_ptr = (Symbol*)this;
0 a61af66fc99e Initial load duke parents: diff changeset	173 length = UTF8::unicode_length((char*)this_ptr->bytes(), utf8_length());
a61af66fc99e Initial load duke parents: diff changeset	174 jchar* result = NEW_RESOURCE_ARRAY(jchar, length);
a61af66fc99e Initial load duke parents: diff changeset	175 if (length > 0) {
a61af66fc99e Initial load duke parents: diff changeset	176 UTF8::convert_to_unicode((char*)this_ptr->bytes(), result, length);
a61af66fc99e Initial load duke parents: diff changeset	177 }
a61af66fc99e Initial load duke parents: diff changeset	178 return result;
a61af66fc99e Initial load duke parents: diff changeset	179 }
a61af66fc99e Initial load duke parents: diff changeset	180
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	181 const char* Symbol::as_klass_external_name(char* buf, int size) const {
0 a61af66fc99e Initial load duke parents: diff changeset	182 if (size > 0) {
a61af66fc99e Initial load duke parents: diff changeset	183 char* str = as_C_string(buf, size);
a61af66fc99e Initial load duke parents: diff changeset	184 int length = (int)strlen(str);
a61af66fc99e Initial load duke parents: diff changeset	185 // Turn all '/'s into '.'s (also for array klasses)
a61af66fc99e Initial load duke parents: diff changeset	186 for (int index = 0; index < length; index++) {
a61af66fc99e Initial load duke parents: diff changeset	187 if (str[index] == '/') {
a61af66fc99e Initial load duke parents: diff changeset	188 str[index] = '.';
a61af66fc99e Initial load duke parents: diff changeset	189 }
a61af66fc99e Initial load duke parents: diff changeset	190 }
a61af66fc99e Initial load duke parents: diff changeset	191 return str;
a61af66fc99e Initial load duke parents: diff changeset	192 } else {
a61af66fc99e Initial load duke parents: diff changeset	193 return buf;
a61af66fc99e Initial load duke parents: diff changeset	194 }
a61af66fc99e Initial load duke parents: diff changeset	195 }
a61af66fc99e Initial load duke parents: diff changeset	196
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	197 const char* Symbol::as_klass_external_name() const {
0 a61af66fc99e Initial load duke parents: diff changeset	198 char* str = as_C_string();
a61af66fc99e Initial load duke parents: diff changeset	199 int length = (int)strlen(str);
a61af66fc99e Initial load duke parents: diff changeset	200 // Turn all '/'s into '.'s (also for array klasses)
a61af66fc99e Initial load duke parents: diff changeset	201 for (int index = 0; index < length; index++) {
a61af66fc99e Initial load duke parents: diff changeset	202 if (str[index] == '/') {
a61af66fc99e Initial load duke parents: diff changeset	203 str[index] = '.';
a61af66fc99e Initial load duke parents: diff changeset	204 }
a61af66fc99e Initial load duke parents: diff changeset	205 }
a61af66fc99e Initial load duke parents: diff changeset	206 return str;
a61af66fc99e Initial load duke parents: diff changeset	207 }
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	208
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	209 // Alternate hashing for unbalanced symbol tables.
17709 f9e35a9dc8c7 8033792: AltHashing used jint for imprecise bit shifting minqi parents: 12146 diff changeset	210 unsigned int Symbol::new_hash(juint seed) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	211 ResourceMark rm;
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	212 // Use alternate hashing algorithm on this symbol.
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6266 diff changeset	213 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	214 }
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	215
8675 63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	216 void Symbol::increment_refcount() {
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	217 // 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	218 // 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	219 // shared archive.
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	220 if (_refcount >= 0) {
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	221 Atomic::inc(&_refcount);
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	222 NOT_PRODUCT(Atomic::inc(&_total_count);)
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 }
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	225
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	226 void Symbol::decrement_refcount() {
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	227 if (_refcount >= 0) {
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	228 Atomic::dec(&_refcount);
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	229 #ifdef ASSERT
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	230 if (_refcount < 0) {
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	231 print();
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	232 assert(false, "reference count underflow for symbol");
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 #endif
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	235 }
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	236 }
63e54c37ac64 8008959: Fix non-PCH build on Linux, Windows and MacOS X simonis parents: 7990 diff changeset	237
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	238 void Symbol::print_on(outputStream* st) const {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	239 if (this == NULL) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	240 st->print_cr("NULL");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	241 } else {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	242 st->print("Symbol: '");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	243 print_symbol_on(st);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	244 st->print("'");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	245 st->print(" count %d", refcount());
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 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	248
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	249 // 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	250 // disassembler and error reporting.
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	251 void Symbol::print_value_on(outputStream* st) const {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	252 if (this == NULL) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	253 st->print("NULL");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	254 } else {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	255 st->print("'");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	256 for (int i = 0; i < utf8_length(); i++) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	257 st->print("%c", byte_at(i));
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 st->print("'");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	260 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	261 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	262
5979 fc9d8850ab8b 7150058: Allocate symbols from null boot loader to an arena for NMT coleenp parents: 2426 diff changeset	263 // SymbolTable prints this in its statistics
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	264 NOT_PRODUCT(int Symbol::_total_count = 0;)

Mercurial > hg > truffle

annotate src/share/vm/oops/symbol.cpp @ 17716:cdb71841f4bc