Mercurial > hg > graal-compiler
annotate src/share/vm/oops/symbol.cpp @ 6266:1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
6984705: JSR 292 method handle creation should not go through JNI
Summary: remove assembly code for JDK 7 chained method handles
Reviewed-by: jrose, twisti, kvn, mhaupt
Contributed-by: John Rose <john.r.rose@oracle.com>, Christian Thalinger <christian.thalinger@oracle.com>, Michael Haupt <michael.haupt@oracle.com>
author | twisti |
---|---|
date | Tue, 24 Jul 2012 10:51:00 -0700 |
parents | d2a62e0f25eb |
children | da91efe96a93 |
rev | line source |
---|---|
0 | 1 /* |
5979
fc9d8850ab8b
7150058: Allocate symbols from null boot loader to an arena for NMT
coleenp
parents:
2426
diff
changeset
|
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
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 | 22 * |
23 */ | |
24 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
25 |
1972 | 26 #include "precompiled.hpp" |
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 | 31 |
5979
fc9d8850ab8b
7150058: Allocate symbols from null boot loader to an arena for NMT
coleenp
parents:
2426
diff
changeset
|
32 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
|
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 |
5979
fc9d8850ab8b
7150058: Allocate symbols from null boot loader to an arena for NMT
coleenp
parents:
2426
diff
changeset
|
39 void* Symbol::operator new(size_t sz, int len, TRAPS) { |
fc9d8850ab8b
7150058: Allocate symbols from null boot loader to an arena for NMT
coleenp
parents:
2426
diff
changeset
|
40 int alloc_size = object_size(len)*HeapWordSize; |
6197 | 41 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
|
42 DEBUG_ONLY(set_allocation_type(res, ResourceObj::C_HEAP);) |
fc9d8850ab8b
7150058: Allocate symbols from null boot loader to an arena for NMT
coleenp
parents:
2426
diff
changeset
|
43 return res; |
fc9d8850ab8b
7150058: Allocate symbols from null boot loader to an arena for NMT
coleenp
parents:
2426
diff
changeset
|
44 } |
fc9d8850ab8b
7150058: Allocate symbols from null boot loader to an arena for NMT
coleenp
parents:
2426
diff
changeset
|
45 |
fc9d8850ab8b
7150058: Allocate symbols from null boot loader to an arena for NMT
coleenp
parents:
2426
diff
changeset
|
46 void* Symbol::operator new(size_t sz, int len, Arena* arena, TRAPS) { |
fc9d8850ab8b
7150058: Allocate symbols from null boot loader to an arena for NMT
coleenp
parents:
2426
diff
changeset
|
47 int alloc_size = object_size(len)*HeapWordSize; |
fc9d8850ab8b
7150058: Allocate symbols from null boot loader to an arena for NMT
coleenp
parents:
2426
diff
changeset
|
48 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
|
49 DEBUG_ONLY(set_allocation_type(res, ResourceObj::ARENA);) |
fc9d8850ab8b
7150058: Allocate symbols from null boot loader to an arena for NMT
coleenp
parents:
2426
diff
changeset
|
50 return res; |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
51 } |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
52 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
53 // ------------------------------------------------------------------ |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
54 // Symbol::equals |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
55 // |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
56 // 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
|
57 bool Symbol::equals(const char* str, int len) const { |
0 | 58 int l = utf8_length(); |
59 if (l != len) return false; | |
60 while (l-- > 0) { | |
61 if (str[l] != (char) byte_at(l)) | |
62 return false; | |
63 } | |
64 assert(l == -1, "we should be at the beginning"); | |
65 return true; | |
66 } | |
67 | |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
68 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
69 // ------------------------------------------------------------------ |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
70 // Symbol::starts_with |
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 // 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
|
73 // length. |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
74 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
|
75 if (len > utf8_length()) return false; |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
76 while (len-- > 0) { |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
77 if (prefix[len] != (char) byte_at(len)) |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
78 return false; |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
79 } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
80 assert(len == -1, "we should be at the beginning"); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
81 return true; |
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 |
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::index_of |
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 // 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
|
89 // 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
|
90 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
|
91 assert(i >= 0 && i <= utf8_length(), "oob"); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
92 if (len <= 0) return 0; |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
93 char first_char = str[0]; |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
94 address bytes = (address) ((Symbol*)this)->base(); |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
95 address limit = bytes + utf8_length() - len; // inclusive limit |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
96 address scan = bytes + i; |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
97 if (scan > limit) |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
98 return -1; |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
99 for (; scan <= limit; scan++) { |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
100 scan = (address) memchr(scan, first_char, (limit + 1 - scan)); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
101 if (scan == NULL) |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
102 return -1; // not found |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
103 assert(scan >= bytes+i && scan <= limit, "scan oob"); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
104 if (memcmp(scan, str, len) == 0) |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
105 return (int)(scan - bytes); |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
106 } |
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
6197
diff
changeset
|
107 return -1; |
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
108 } |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
diff
changeset
|
109 |
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
222
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(char* buf, int size) const { |
0 | 112 if (size > 0) { |
113 int len = MIN2(size - 1, utf8_length()); | |
114 for (int i = 0; i < len; i++) { | |
115 buf[i] = byte_at(i); | |
116 } | |
117 buf[len] = '\0'; | |
118 } | |
119 return buf; | |
120 } | |
121 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
122 char* Symbol::as_C_string() const { |
0 | 123 int len = utf8_length(); |
124 char* str = NEW_RESOURCE_ARRAY(char, len + 1); | |
125 return as_C_string(str, len + 1); | |
126 } | |
127 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
128 char* Symbol::as_C_string_flexible_buffer(Thread* t, |
0 | 129 char* buf, int size) const { |
130 char* str; | |
131 int len = utf8_length(); | |
132 int buf_len = len + 1; | |
133 if (size < buf_len) { | |
134 str = NEW_RESOURCE_ARRAY(char, buf_len); | |
135 } else { | |
136 str = buf; | |
137 } | |
138 return as_C_string(str, buf_len); | |
139 } | |
140 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
141 void Symbol::print_symbol_on(outputStream* st) const { |
0 | 142 st = st ? st : tty; |
222 | 143 int length = UTF8::unicode_length((const char*)bytes(), utf8_length()); |
144 const char *ptr = (const char *)bytes(); | |
145 jchar value; | |
146 for (int index = 0; index < length; index++) { | |
147 ptr = UTF8::next(ptr, &value); | |
148 if (value >= 32 && value < 127 || value == '\'' || value == '\\') { | |
149 st->put(value); | |
150 } else { | |
151 st->print("\\u%04x", value); | |
152 } | |
153 } | |
0 | 154 } |
155 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
156 jchar* Symbol::as_unicode(int& length) const { |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
157 Symbol* this_ptr = (Symbol*)this; |
0 | 158 length = UTF8::unicode_length((char*)this_ptr->bytes(), utf8_length()); |
159 jchar* result = NEW_RESOURCE_ARRAY(jchar, length); | |
160 if (length > 0) { | |
161 UTF8::convert_to_unicode((char*)this_ptr->bytes(), result, length); | |
162 } | |
163 return result; | |
164 } | |
165 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
166 const char* Symbol::as_klass_external_name(char* buf, int size) const { |
0 | 167 if (size > 0) { |
168 char* str = as_C_string(buf, size); | |
169 int length = (int)strlen(str); | |
170 // Turn all '/'s into '.'s (also for array klasses) | |
171 for (int index = 0; index < length; index++) { | |
172 if (str[index] == '/') { | |
173 str[index] = '.'; | |
174 } | |
175 } | |
176 return str; | |
177 } else { | |
178 return buf; | |
179 } | |
180 } | |
181 | |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
182 const char* Symbol::as_klass_external_name() const { |
0 | 183 char* str = as_C_string(); |
184 int length = (int)strlen(str); | |
185 // Turn all '/'s into '.'s (also for array klasses) | |
186 for (int index = 0; index < length; index++) { | |
187 if (str[index] == '/') { | |
188 str[index] = '.'; | |
189 } | |
190 } | |
191 return str; | |
192 } | |
2177
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 void Symbol::print_on(outputStream* st) const { |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
196 if (this == NULL) { |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
197 st->print_cr("NULL"); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
198 } else { |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
199 st->print("Symbol: '"); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
200 print_symbol_on(st); |
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 st->print(" count %d", refcount()); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
203 } |
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 |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
206 // 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
|
207 // disassembler and error reporting. |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
208 void Symbol::print_value_on(outputStream* st) const { |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
209 if (this == NULL) { |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
210 st->print("NULL"); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
211 } else { |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
212 st->print("'"); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
213 for (int i = 0; i < utf8_length(); i++) { |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
214 st->print("%c", byte_at(i)); |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
215 } |
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
216 st->print("'"); |
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 |
5979
fc9d8850ab8b
7150058: Allocate symbols from null boot loader to an arena for NMT
coleenp
parents:
2426
diff
changeset
|
220 // SymbolTable prints this in its statistics |
2177
3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents:
1972
diff
changeset
|
221 NOT_PRODUCT(int Symbol::_total_count = 0;) |