truffle: src/share/vm/ci/ciSymbol.hpp annotate

annotate src/share/vm/ci/ciSymbol.hpp @ 3762:5c0a3c1858b1

7048782: CMS: assert(last_chunk_index_to_check<= last_chunk_index) failed: parCardTableModRefBS.cpp:359 Summary: The LNC array is sized before the start of a scavenge, while the heap may expand during a scavenge. With CMS, the last block of an arbitrary suffice of the LNC array may expand due to coalition with the expansion delta. We now take care not to attempt access past the end of the LNC array. LNC array code will be cleaned up and suitably encapsulated as part of the forthcoming performance RFE 7043675. Reviewed-by: brutisso

author	ysr
date	Thu, 02 Jun 2011 10:23:36 -0700
parents	1d1603768966
children	0654ee04b214 1d7922586cf6

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
2426 1d1603768966 7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass trims parents: 2177 diff changeset	2 * Copyright (c) 1999, 2011, 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: 1507 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1507 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: 1507 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
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	25 #ifndef SHARE_VM_CI_CISYMBOL_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	26 #define SHARE_VM_CI_CISYMBOL_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	27
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	28 #include "ci/ciObject.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	29 #include "ci/ciObjectFactory.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	30 #include "classfile/vmSymbols.hpp"
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	31 #include "oops/symbol.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	32
0 a61af66fc99e Initial load duke parents: diff changeset	33 // ciSymbol
a61af66fc99e Initial load duke parents: diff changeset	34 //
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	35 // This class represents a Symbol* in the HotSpot virtual
0 a61af66fc99e Initial load duke parents: diff changeset	36 // machine.
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	37 class ciSymbol : public ResourceObj {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	38 Symbol* _symbol;
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	39 uint _ident;
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	40
0 a61af66fc99e Initial load duke parents: diff changeset	41 CI_PACKAGE_ACCESS
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	42 // These friends all make direct use of get_symbol:
0 a61af66fc99e Initial load duke parents: diff changeset	43 friend class ciEnv;
a61af66fc99e Initial load duke parents: diff changeset	44 friend class ciInstanceKlass;
a61af66fc99e Initial load duke parents: diff changeset	45 friend class ciSignature;
a61af66fc99e Initial load duke parents: diff changeset	46 friend class ciMethod;
a61af66fc99e Initial load duke parents: diff changeset	47 friend class ciObjArrayKlass;
a61af66fc99e Initial load duke parents: diff changeset	48
a61af66fc99e Initial load duke parents: diff changeset	49 private:
1507 cd5dbf694d45 6939134: JSR 292 adjustments to method handle invocation jrose parents: 1138 diff changeset	50 const vmSymbols::SID _sid;
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	51 DEBUG_ONLY( bool sid_ok() { return vmSymbols::find_sid(get_symbol()) == _sid; } )
1507 cd5dbf694d45 6939134: JSR 292 adjustments to method handle invocation jrose parents: 1138 diff changeset	52
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	53 ciSymbol(Symbol* s); // normal case, for symbols not mentioned in vmSymbols
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	54 ciSymbol(Symbol* s, vmSymbols::SID sid); // for use with vmSymbols
0 a61af66fc99e Initial load duke parents: diff changeset	55
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	56 Symbol* get_symbol() const { return _symbol; }
0 a61af66fc99e Initial load duke parents: diff changeset	57
a61af66fc99e Initial load duke parents: diff changeset	58 const char* type_string() { return "ciSymbol"; }
a61af66fc99e Initial load duke parents: diff changeset	59
a61af66fc99e Initial load duke parents: diff changeset	60 void print_impl(outputStream* st);
a61af66fc99e Initial load duke parents: diff changeset	61
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	62 // This is public in Symbol* but private here, because the base can move:
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	63 const jbyte* base();
0 a61af66fc99e Initial load duke parents: diff changeset	64
a61af66fc99e Initial load duke parents: diff changeset	65 // Make a ciSymbol from a C string (implementation).
a61af66fc99e Initial load duke parents: diff changeset	66 static ciSymbol* make_impl(const char* s);
a61af66fc99e Initial load duke parents: diff changeset	67
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	68 void set_ident(uint id) { _ident = id; }
0 a61af66fc99e Initial load duke parents: diff changeset	69 public:
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	70 // A number unique to this object.
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	71 uint ident() { return _ident; }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	72
1507 cd5dbf694d45 6939134: JSR 292 adjustments to method handle invocation jrose parents: 1138 diff changeset	73 // The enumeration ID from vmSymbols, or vmSymbols::NO_SID if none.
cd5dbf694d45 6939134: JSR 292 adjustments to method handle invocation jrose parents: 1138 diff changeset	74 vmSymbols::SID sid() const { return _sid; }
cd5dbf694d45 6939134: JSR 292 adjustments to method handle invocation jrose parents: 1138 diff changeset	75
0 a61af66fc99e Initial load duke parents: diff changeset	76 // The text of the symbol as a null-terminated utf8 string.
a61af66fc99e Initial load duke parents: diff changeset	77 const char* as_utf8();
a61af66fc99e Initial load duke parents: diff changeset	78 int utf8_length();
a61af66fc99e Initial load duke parents: diff changeset	79
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 0 diff changeset	80 // Return the i-th utf8 byte, where i < utf8_length
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 0 diff changeset	81 int byte_at(int i);
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 0 diff changeset	82
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 0 diff changeset	83 // Tests if the symbol starts with the given prefix.
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 0 diff changeset	84 bool starts_with(const char* prefix, int len) const;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 0 diff changeset	85
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 0 diff changeset	86 // Determines where the symbol contains the given substring.
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 0 diff changeset	87 int index_of_at(int i, const char* str, int len) const;
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 0 diff changeset	88
0 a61af66fc99e Initial load duke parents: diff changeset	89 void print_symbol_on(outputStream* st);
a61af66fc99e Initial load duke parents: diff changeset	90 void print_symbol() {
a61af66fc99e Initial load duke parents: diff changeset	91 print_symbol_on(tty);
a61af66fc99e Initial load duke parents: diff changeset	92 }
a61af66fc99e Initial load duke parents: diff changeset	93
a61af66fc99e Initial load duke parents: diff changeset	94 // Make a ciSymbol from a C string.
a61af66fc99e Initial load duke parents: diff changeset	95 // Consider adding to vmSymbols.hpp instead of using this constructor.
a61af66fc99e Initial load duke parents: diff changeset	96 // (Your code will be less subject to typographical bugs.)
a61af66fc99e Initial load duke parents: diff changeset	97 static ciSymbol* make(const char* s);
a61af66fc99e Initial load duke parents: diff changeset	98
a61af66fc99e Initial load duke parents: diff changeset	99 #define CI_SYMBOL_DECLARE(name, ignore_def) \
a61af66fc99e Initial load duke parents: diff changeset	100 static ciSymbol* name() { return ciObjectFactory::vm_symbol_at(vmSymbols::VM_SYMBOL_ENUM_NAME(name)); }
a61af66fc99e Initial load duke parents: diff changeset	101 VM_SYMBOLS_DO(CI_SYMBOL_DECLARE, CI_SYMBOL_DECLARE)
a61af66fc99e Initial load duke parents: diff changeset	102 #undef CI_SYMBOL_DECLARE
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	103
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	104 void print() {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	105 _symbol->print();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	106 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	107
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	108 // Are two ciSymbols equal?
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 1972 diff changeset	109 bool equals(ciSymbol* obj) { return this->_symbol == obj->get_symbol(); }
0 a61af66fc99e Initial load duke parents: diff changeset	110 };
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	111
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1552 diff changeset	112 #endif // SHARE_VM_CI_CISYMBOL_HPP

Mercurial > hg > truffle

annotate src/share/vm/ci/ciSymbol.hpp @ 3762:5c0a3c1858b1