Mercurial > hg > graal-compiler
annotate src/share/vm/ci/ciSymbol.hpp @ 1138:dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
Summary: C2 needs some additional optimizations to be able to handle MethodHandle invokes and invokedynamic instructions at the best performance.
Reviewed-by: kvn, never
| author | twisti |
|---|---|
| date | Tue, 05 Jan 2010 15:21:25 +0100 |
| parents | a61af66fc99e |
| children | 1ecc8f0aad00 cd5dbf694d45 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright 1999-2009 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 // ciSymbol | |
| 26 // | |
| 27 // This class represents a symbolOop in the HotSpot virtual | |
| 28 // machine. | |
| 29 class ciSymbol : public ciObject { | |
| 30 CI_PACKAGE_ACCESS | |
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31 // These friends all make direct use of get_symbolOop: |
| 0 | 32 friend class ciEnv; |
| 33 friend class ciInstanceKlass; | |
| 34 friend class ciSignature; | |
| 35 friend class ciMethod; | |
| 36 friend class ciObjArrayKlass; | |
| 37 | |
| 38 private: | |
| 39 ciSymbol(symbolOop s) : ciObject(s) {} | |
| 40 ciSymbol(symbolHandle s); // for use with vmSymbolHandles | |
| 41 | |
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42 symbolOop get_symbolOop() const { return (symbolOop)get_oop(); } |
| 0 | 43 |
| 44 const char* type_string() { return "ciSymbol"; } | |
| 45 | |
| 46 void print_impl(outputStream* st); | |
| 47 | |
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48 // This is public in symbolOop but private here, because the base can move: |
| 0 | 49 jbyte* base(); |
| 50 | |
| 51 // Make a ciSymbol from a C string (implementation). | |
| 52 static ciSymbol* make_impl(const char* s); | |
| 53 | |
| 54 public: | |
| 55 // The text of the symbol as a null-terminated utf8 string. | |
| 56 const char* as_utf8(); | |
| 57 int utf8_length(); | |
| 58 | |
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59 // Return the i-th utf8 byte, where i < utf8_length |
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60 int byte_at(int i); |
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61 |
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62 // Tests if the symbol starts with the given prefix. |
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63 bool starts_with(const char* prefix, int len) const; |
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64 |
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65 // Determines where the symbol contains the given substring. |
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66 int index_of_at(int i, const char* str, int len) const; |
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67 |
| 0 | 68 // What kind of ciObject is this? |
| 69 bool is_symbol() { return true; } | |
| 70 | |
| 71 void print_symbol_on(outputStream* st); | |
| 72 void print_symbol() { | |
| 73 print_symbol_on(tty); | |
| 74 } | |
| 75 | |
| 76 // Make a ciSymbol from a C string. | |
| 77 // Consider adding to vmSymbols.hpp instead of using this constructor. | |
| 78 // (Your code will be less subject to typographical bugs.) | |
| 79 static ciSymbol* make(const char* s); | |
| 80 | |
| 81 #define CI_SYMBOL_DECLARE(name, ignore_def) \ | |
| 82 static ciSymbol* name() { return ciObjectFactory::vm_symbol_at(vmSymbols::VM_SYMBOL_ENUM_NAME(name)); } | |
| 83 VM_SYMBOLS_DO(CI_SYMBOL_DECLARE, CI_SYMBOL_DECLARE) | |
| 84 #undef CI_SYMBOL_DECLARE | |
| 85 }; |