truffle: src/share/vm/oops/constantPoolOop.hpp annotate

annotate src/share/vm/oops/constantPoolOop.hpp @ 2177:3582bf76420e

6990754: Use native memory and reference counting to implement SymbolTable Summary: move symbols from permgen into C heap and reference count them Reviewed-by: never, acorn, jmasa, stefank

author	coleenp
date	Thu, 27 Jan 2011 16:11:27 -0800
parents	dad31fc330cd
children	b92c45f2bc75

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
1579 e9ff18c4ace7 Merge jrose parents: 1552 1565 diff changeset	2 * Copyright (c) 1997, 2010, 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
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	25 #ifndef SHARE_VM_OOPS_CONSTANTPOOLOOP_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	26 #define SHARE_VM_OOPS_CONSTANTPOOLOOP_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	27
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	28 #include "oops/arrayOop.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	29 #include "oops/cpCacheOop.hpp"
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	30 #include "oops/symbol.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	31 #include "oops/typeArrayOop.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	32 #include "utilities/constantTag.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	33 #ifdef TARGET_ARCH_x86
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	34 # include "bytes_x86.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	35 #endif
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	36 #ifdef TARGET_ARCH_sparc
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	37 # include "bytes_sparc.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	38 #endif
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	39 #ifdef TARGET_ARCH_zero
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	40 # include "bytes_zero.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	41 #endif
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	42
0 a61af66fc99e Initial load duke parents: diff changeset	43 // A constantPool is an array containing class constants as described in the
a61af66fc99e Initial load duke parents: diff changeset	44 // class file.
a61af66fc99e Initial load duke parents: diff changeset	45 //
a61af66fc99e Initial load duke parents: diff changeset	46 // Most of the constant pool entries are written during class parsing, which
a61af66fc99e Initial load duke parents: diff changeset	47 // is safe. For klass and string types, the constant pool entry is
a61af66fc99e Initial load duke parents: diff changeset	48 // modified when the entry is resolved. If a klass or string constant pool
a61af66fc99e Initial load duke parents: diff changeset	49 // entry is read without a lock, only the resolved state guarantees that
a61af66fc99e Initial load duke parents: diff changeset	50 // the entry in the constant pool is a klass or String object and
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	51 // not a Symbol*.
0 a61af66fc99e Initial load duke parents: diff changeset	52
a61af66fc99e Initial load duke parents: diff changeset	53 class SymbolHashMap;
a61af66fc99e Initial load duke parents: diff changeset	54
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	55 class CPSlot VALUE_OBJ_CLASS_SPEC {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	56 intptr_t _ptr;
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	57 public:
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	58 CPSlot(intptr_t ptr): _ptr(ptr) {}
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	59 CPSlot(void* ptr): _ptr((intptr_t)ptr) {}
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	60 CPSlot(oop ptr): _ptr((intptr_t)ptr) {}
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	61 CPSlot(Symbol* ptr): _ptr((intptr_t)ptr \| 1) {}
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	62
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	63 intptr_t value() { return _ptr; }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	64 bool is_oop() { return (_ptr & 1) == 0; }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	65 bool is_metadata() { return (_ptr & 1) == 1; }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	66
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	67 oop get_oop() {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	68 assert(is_oop(), "bad call");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	69 return oop(_ptr);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	70 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	71 Symbol* get_symbol() {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	72 assert(is_metadata(), "bad call");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	73 return (Symbol*)(_ptr & ~1);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	74 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	75 };
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	76
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	77 class constantPoolOopDesc : public oopDesc {
0 a61af66fc99e Initial load duke parents: diff changeset	78 friend class VMStructs;
a61af66fc99e Initial load duke parents: diff changeset	79 friend class BytecodeInterpreter; // Directly extracts an oop in the pool for fast instanceof/checkcast
a61af66fc99e Initial load duke parents: diff changeset	80 private:
a61af66fc99e Initial load duke parents: diff changeset	81 typeArrayOop _tags; // the tag array describing the constant pool's contents
a61af66fc99e Initial load duke parents: diff changeset	82 constantPoolCacheOop _cache; // the cache holding interpreter runtime information
a61af66fc99e Initial load duke parents: diff changeset	83 klassOop _pool_holder; // the corresponding class
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	84 typeArrayOop _operands; // for variable-sized (InvokeDynamic) nodes, usually empty
431 a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	85 int _flags; // a few header bits to describe contents for GC
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	86 int _length; // number of elements in the array
518 0af8b0718fc9 6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark" jmasa parents: 431 diff changeset	87 volatile bool _is_conc_safe; // if true, safe for concurrent
0af8b0718fc9 6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark" jmasa parents: 431 diff changeset	88 // GC processing
0 a61af66fc99e Initial load duke parents: diff changeset	89 // only set to non-zero if constant pool is merged by RedefineClasses
a61af66fc99e Initial load duke parents: diff changeset	90 int _orig_length;
a61af66fc99e Initial load duke parents: diff changeset	91
a61af66fc99e Initial load duke parents: diff changeset	92 void set_tags(typeArrayOop tags) { oop_store_without_check((oop*)&_tags, tags); }
a61af66fc99e Initial load duke parents: diff changeset	93 void tag_at_put(int which, jbyte t) { tags()->byte_at_put(which, t); }
a61af66fc99e Initial load duke parents: diff changeset	94 void release_tag_at_put(int which, jbyte t) { tags()->release_byte_at_put(which, t); }
a61af66fc99e Initial load duke parents: diff changeset	95
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	96 void set_operands(typeArrayOop operands) { oop_store_without_check((oop*)&_operands, operands); }
3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	97
431 a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	98 enum FlagBit {
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	99 FB_has_invokedynamic = 1,
431 a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	100 FB_has_pseudo_string = 2
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	101 };
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	102
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	103 int flags() const { return _flags; }
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	104 void set_flags(int f) { _flags = f; }
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	105 bool flag_at(FlagBit fb) const { return (_flags & (1 << (int)fb)) != 0; }
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	106 void set_flag_at(FlagBit fb);
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	107 // no clear_flag_at function; they only increase
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	108
0 a61af66fc99e Initial load duke parents: diff changeset	109 private:
a61af66fc99e Initial load duke parents: diff changeset	110 intptr_t* base() const { return (intptr_t) (((char) this) + sizeof(constantPoolOopDesc)); }
a61af66fc99e Initial load duke parents: diff changeset	111 oop* tags_addr() { return (oop*)&_tags; }
a61af66fc99e Initial load duke parents: diff changeset	112 oop* cache_addr() { return (oop*)&_cache; }
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	113 oop* operands_addr() { return (oop*)&_operands; }
0 a61af66fc99e Initial load duke parents: diff changeset	114
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	115 CPSlot slot_at(int which) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	116 assert(is_within_bounds(which), "index out of bounds");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	117 // There's a transitional value of zero when converting from
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	118 // Symbol->0->Klass for G1 when resolving classes and strings.
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	119 // wait for the value to be non-zero (this is temporary)
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	120 volatile intptr_t adr = (intptr_t)OrderAccess::load_ptr_acquire(obj_at_addr_raw(which));
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	121 if (adr == 0 && which != 0) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	122 constantTag t = tag_at(which);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	123 if (t.is_unresolved_klass() \|\| t.is_klass() \|\|
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	124 t.is_unresolved_string() \|\| t.is_string()) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	125 while ((adr = (intptr_t)OrderAccess::load_ptr_acquire(obj_at_addr_raw(which))) == 0);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	126 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	127 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	128 return CPSlot(adr);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	129 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	130
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	131 void slot_at_put(int which, CPSlot s) const {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	132 assert(is_within_bounds(which), "index out of bounds");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	133 (intptr_t)&base()[which] = s.value();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	134 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	135 oop* obj_at_addr_raw(int which) const {
0 a61af66fc99e Initial load duke parents: diff changeset	136 assert(is_within_bounds(which), "index out of bounds");
a61af66fc99e Initial load duke parents: diff changeset	137 return (oop*) &base()[which];
a61af66fc99e Initial load duke parents: diff changeset	138 }
a61af66fc99e Initial load duke parents: diff changeset	139
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	140 void obj_at_put_without_check(int which, oop o) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	141 assert(is_within_bounds(which), "index out of bounds");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	142 oop_store_without_check((volatile oop *)obj_at_addr_raw(which), o);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	143 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	144
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	145 void obj_at_put(int which, oop o) const {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	146 assert(is_within_bounds(which), "index out of bounds");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	147 oop_store((volatile oop*)obj_at_addr_raw(which), o);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	148 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	149
0 a61af66fc99e Initial load duke parents: diff changeset	150 jint* int_at_addr(int which) const {
a61af66fc99e Initial load duke parents: diff changeset	151 assert(is_within_bounds(which), "index out of bounds");
a61af66fc99e Initial load duke parents: diff changeset	152 return (jint*) &base()[which];
a61af66fc99e Initial load duke parents: diff changeset	153 }
a61af66fc99e Initial load duke parents: diff changeset	154
a61af66fc99e Initial load duke parents: diff changeset	155 jlong* long_at_addr(int which) const {
a61af66fc99e Initial load duke parents: diff changeset	156 assert(is_within_bounds(which), "index out of bounds");
a61af66fc99e Initial load duke parents: diff changeset	157 return (jlong*) &base()[which];
a61af66fc99e Initial load duke parents: diff changeset	158 }
a61af66fc99e Initial load duke parents: diff changeset	159
a61af66fc99e Initial load duke parents: diff changeset	160 jfloat* float_at_addr(int which) const {
a61af66fc99e Initial load duke parents: diff changeset	161 assert(is_within_bounds(which), "index out of bounds");
a61af66fc99e Initial load duke parents: diff changeset	162 return (jfloat*) &base()[which];
a61af66fc99e Initial load duke parents: diff changeset	163 }
a61af66fc99e Initial load duke parents: diff changeset	164
a61af66fc99e Initial load duke parents: diff changeset	165 jdouble* double_at_addr(int which) const {
a61af66fc99e Initial load duke parents: diff changeset	166 assert(is_within_bounds(which), "index out of bounds");
a61af66fc99e Initial load duke parents: diff changeset	167 return (jdouble*) &base()[which];
a61af66fc99e Initial load duke parents: diff changeset	168 }
a61af66fc99e Initial load duke parents: diff changeset	169
a61af66fc99e Initial load duke parents: diff changeset	170 public:
a61af66fc99e Initial load duke parents: diff changeset	171 typeArrayOop tags() const { return _tags; }
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	172 typeArrayOop operands() const { return _operands; }
0 a61af66fc99e Initial load duke parents: diff changeset	173
431 a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	174 bool has_pseudo_string() const { return flag_at(FB_has_pseudo_string); }
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	175 bool has_invokedynamic() const { return flag_at(FB_has_invokedynamic); }
431 a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	176 void set_pseudo_string() { set_flag_at(FB_has_pseudo_string); }
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	177 void set_invokedynamic() { set_flag_at(FB_has_invokedynamic); }
431 a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	178
0 a61af66fc99e Initial load duke parents: diff changeset	179 // Klass holding pool
a61af66fc99e Initial load duke parents: diff changeset	180 klassOop pool_holder() const { return _pool_holder; }
a61af66fc99e Initial load duke parents: diff changeset	181 void set_pool_holder(klassOop k) { oop_store_without_check((oop*)&_pool_holder, (oop) k); }
a61af66fc99e Initial load duke parents: diff changeset	182 oop* pool_holder_addr() { return (oop*)&_pool_holder; }
a61af66fc99e Initial load duke parents: diff changeset	183
a61af66fc99e Initial load duke parents: diff changeset	184 // Interpreter runtime support
a61af66fc99e Initial load duke parents: diff changeset	185 constantPoolCacheOop cache() const { return _cache; }
a61af66fc99e Initial load duke parents: diff changeset	186 void set_cache(constantPoolCacheOop cache){ oop_store((oop*)&_cache, cache); }
a61af66fc99e Initial load duke parents: diff changeset	187
a61af66fc99e Initial load duke parents: diff changeset	188 // Assembly code support
a61af66fc99e Initial load duke parents: diff changeset	189 static int tags_offset_in_bytes() { return offset_of(constantPoolOopDesc, _tags); }
a61af66fc99e Initial load duke parents: diff changeset	190 static int cache_offset_in_bytes() { return offset_of(constantPoolOopDesc, _cache); }
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	191 static int operands_offset_in_bytes() { return offset_of(constantPoolOopDesc, _operands); }
0 a61af66fc99e Initial load duke parents: diff changeset	192 static int pool_holder_offset_in_bytes() { return offset_of(constantPoolOopDesc, _pool_holder); }
a61af66fc99e Initial load duke parents: diff changeset	193
a61af66fc99e Initial load duke parents: diff changeset	194 // Storing constants
a61af66fc99e Initial load duke parents: diff changeset	195
a61af66fc99e Initial load duke parents: diff changeset	196 void klass_at_put(int which, klassOop k) {
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	197 // Overwrite the old index with a GC friendly value so
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	198 // that if G1 looks during the transition during oop_store it won't
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	199 // assert the symbol is not an oop.
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	200 *obj_at_addr_raw(which) = NULL;
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	201 assert(k != NULL, "resolved class shouldn't be null");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	202 obj_at_put_without_check(which, k);
0 a61af66fc99e Initial load duke parents: diff changeset	203 // The interpreter assumes when the tag is stored, the klass is resolved
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	204 // and the klassOop is a klass rather than a Symbol*, so we need
0 a61af66fc99e Initial load duke parents: diff changeset	205 // hardware store ordering here.
a61af66fc99e Initial load duke parents: diff changeset	206 release_tag_at_put(which, JVM_CONSTANT_Class);
a61af66fc99e Initial load duke parents: diff changeset	207 if (UseConcMarkSweepGC) {
a61af66fc99e Initial load duke parents: diff changeset	208 // In case the earlier card-mark was consumed by a concurrent
a61af66fc99e Initial load duke parents: diff changeset	209 // marking thread before the tag was updated, redirty the card.
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	210 obj_at_put_without_check(which, k);
0 a61af66fc99e Initial load duke parents: diff changeset	211 }
a61af66fc99e Initial load duke parents: diff changeset	212 }
a61af66fc99e Initial load duke parents: diff changeset	213
a61af66fc99e Initial load duke parents: diff changeset	214 // For temporary use while constructing constant pool
a61af66fc99e Initial load duke parents: diff changeset	215 void klass_index_at_put(int which, int name_index) {
a61af66fc99e Initial load duke parents: diff changeset	216 tag_at_put(which, JVM_CONSTANT_ClassIndex);
a61af66fc99e Initial load duke parents: diff changeset	217 *int_at_addr(which) = name_index;
a61af66fc99e Initial load duke parents: diff changeset	218 }
a61af66fc99e Initial load duke parents: diff changeset	219
a61af66fc99e Initial load duke parents: diff changeset	220 // Temporary until actual use
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	221 void unresolved_klass_at_put(int which, Symbol* s) {
0 a61af66fc99e Initial load duke parents: diff changeset	222 release_tag_at_put(which, JVM_CONSTANT_UnresolvedClass);
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	223 slot_at_put(which, s);
0 a61af66fc99e Initial load duke parents: diff changeset	224 }
a61af66fc99e Initial load duke parents: diff changeset	225
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	226 void method_handle_index_at_put(int which, int ref_kind, int ref_index) {
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	227 tag_at_put(which, JVM_CONSTANT_MethodHandle);
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	228 *int_at_addr(which) = ((jint) ref_index<<16) \| ref_kind;
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	229 }
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	230
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	231 void method_type_index_at_put(int which, int ref_index) {
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	232 tag_at_put(which, JVM_CONSTANT_MethodType);
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	233 *int_at_addr(which) = ref_index;
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	234 }
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	235
2011 dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	236 void invoke_dynamic_at_put(int which, int bootstrap_specifier_index, int name_and_type_index) {
1660 083fde3b838e 6964498: JSR 292 invokedynamic sites need local bootstrap methods jrose parents: 1602 diff changeset	237 tag_at_put(which, JVM_CONSTANT_InvokeDynamic);
2011 dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	238 *int_at_addr(which) = ((jint) name_and_type_index<<16) \| bootstrap_specifier_index;
1660 083fde3b838e 6964498: JSR 292 invokedynamic sites need local bootstrap methods jrose parents: 1602 diff changeset	239 }
2011 dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	240
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	241 void invoke_dynamic_trans_at_put(int which, int bootstrap_method_index, int name_and_type_index) {
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	242 tag_at_put(which, JVM_CONSTANT_InvokeDynamicTrans);
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	243 *int_at_addr(which) = ((jint) name_and_type_index<<16) \| bootstrap_method_index;
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	244 assert(AllowTransitionalJSR292, "");
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	245 }
1660 083fde3b838e 6964498: JSR 292 invokedynamic sites need local bootstrap methods jrose parents: 1602 diff changeset	246
0 a61af66fc99e Initial load duke parents: diff changeset	247 // Temporary until actual use
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	248 void unresolved_string_at_put(int which, Symbol* s) {
0 a61af66fc99e Initial load duke parents: diff changeset	249 release_tag_at_put(which, JVM_CONSTANT_UnresolvedString);
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	250 slot_at_put(which, s);
0 a61af66fc99e Initial load duke parents: diff changeset	251 }
a61af66fc99e Initial load duke parents: diff changeset	252
a61af66fc99e Initial load duke parents: diff changeset	253 void int_at_put(int which, jint i) {
a61af66fc99e Initial load duke parents: diff changeset	254 tag_at_put(which, JVM_CONSTANT_Integer);
a61af66fc99e Initial load duke parents: diff changeset	255 *int_at_addr(which) = i;
a61af66fc99e Initial load duke parents: diff changeset	256 }
a61af66fc99e Initial load duke parents: diff changeset	257
a61af66fc99e Initial load duke parents: diff changeset	258 void long_at_put(int which, jlong l) {
a61af66fc99e Initial load duke parents: diff changeset	259 tag_at_put(which, JVM_CONSTANT_Long);
a61af66fc99e Initial load duke parents: diff changeset	260 // *long_at_addr(which) = l;
a61af66fc99e Initial load duke parents: diff changeset	261 Bytes::put_native_u8((address)long_at_addr(which), ((u8) &l));
a61af66fc99e Initial load duke parents: diff changeset	262 }
a61af66fc99e Initial load duke parents: diff changeset	263
a61af66fc99e Initial load duke parents: diff changeset	264 void float_at_put(int which, jfloat f) {
a61af66fc99e Initial load duke parents: diff changeset	265 tag_at_put(which, JVM_CONSTANT_Float);
a61af66fc99e Initial load duke parents: diff changeset	266 *float_at_addr(which) = f;
a61af66fc99e Initial load duke parents: diff changeset	267 }
a61af66fc99e Initial load duke parents: diff changeset	268
a61af66fc99e Initial load duke parents: diff changeset	269 void double_at_put(int which, jdouble d) {
a61af66fc99e Initial load duke parents: diff changeset	270 tag_at_put(which, JVM_CONSTANT_Double);
a61af66fc99e Initial load duke parents: diff changeset	271 // *double_at_addr(which) = d;
a61af66fc99e Initial load duke parents: diff changeset	272 // u8 temp = (u8) &d;
a61af66fc99e Initial load duke parents: diff changeset	273 Bytes::put_native_u8((address) double_at_addr(which), ((u8) &d));
a61af66fc99e Initial load duke parents: diff changeset	274 }
a61af66fc99e Initial load duke parents: diff changeset	275
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	276 Symbol** symbol_at_addr(int which) const {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	277 assert(is_within_bounds(which), "index out of bounds");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	278 return (Symbol**) &base()[which];
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	279 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	280
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	281 void symbol_at_put(int which, Symbol* s) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	282 assert(s->refcount() != 0, "should have nonzero refcount");
0 a61af66fc99e Initial load duke parents: diff changeset	283 tag_at_put(which, JVM_CONSTANT_Utf8);
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	284 slot_at_put(which, s);
0 a61af66fc99e Initial load duke parents: diff changeset	285 }
a61af66fc99e Initial load duke parents: diff changeset	286
a61af66fc99e Initial load duke parents: diff changeset	287 void string_at_put(int which, oop str) {
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	288 // Overwrite the old index with a GC friendly value so
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	289 // that if G1 looks during the transition during oop_store it won't
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	290 // assert the symbol is not an oop.
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	291 *obj_at_addr_raw(which) = NULL;
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	292 assert(str != NULL, "resolved string shouldn't be null");
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	293 obj_at_put(which, str);
0 a61af66fc99e Initial load duke parents: diff changeset	294 release_tag_at_put(which, JVM_CONSTANT_String);
a61af66fc99e Initial load duke parents: diff changeset	295 if (UseConcMarkSweepGC) {
a61af66fc99e Initial load duke parents: diff changeset	296 // In case the earlier card-mark was consumed by a concurrent
a61af66fc99e Initial load duke parents: diff changeset	297 // marking thread before the tag was updated, redirty the card.
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	298 obj_at_put_without_check(which, str);
0 a61af66fc99e Initial load duke parents: diff changeset	299 }
a61af66fc99e Initial load duke parents: diff changeset	300 }
a61af66fc99e Initial load duke parents: diff changeset	301
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	302 void object_at_put(int which, oop str) {
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	303 obj_at_put(which, str);
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	304 release_tag_at_put(which, JVM_CONSTANT_Object);
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	305 if (UseConcMarkSweepGC) {
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	306 // In case the earlier card-mark was consumed by a concurrent
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	307 // marking thread before the tag was updated, redirty the card.
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	308 obj_at_put_without_check(which, str);
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	309 }
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	310 }
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	311
0 a61af66fc99e Initial load duke parents: diff changeset	312 // For temporary use while constructing constant pool
a61af66fc99e Initial load duke parents: diff changeset	313 void string_index_at_put(int which, int string_index) {
a61af66fc99e Initial load duke parents: diff changeset	314 tag_at_put(which, JVM_CONSTANT_StringIndex);
a61af66fc99e Initial load duke parents: diff changeset	315 *int_at_addr(which) = string_index;
a61af66fc99e Initial load duke parents: diff changeset	316 }
a61af66fc99e Initial load duke parents: diff changeset	317
a61af66fc99e Initial load duke parents: diff changeset	318 void field_at_put(int which, int class_index, int name_and_type_index) {
a61af66fc99e Initial load duke parents: diff changeset	319 tag_at_put(which, JVM_CONSTANT_Fieldref);
a61af66fc99e Initial load duke parents: diff changeset	320 *int_at_addr(which) = ((jint) name_and_type_index<<16) \| class_index;
a61af66fc99e Initial load duke parents: diff changeset	321 }
a61af66fc99e Initial load duke parents: diff changeset	322
a61af66fc99e Initial load duke parents: diff changeset	323 void method_at_put(int which, int class_index, int name_and_type_index) {
a61af66fc99e Initial load duke parents: diff changeset	324 tag_at_put(which, JVM_CONSTANT_Methodref);
a61af66fc99e Initial load duke parents: diff changeset	325 *int_at_addr(which) = ((jint) name_and_type_index<<16) \| class_index;
a61af66fc99e Initial load duke parents: diff changeset	326 }
a61af66fc99e Initial load duke parents: diff changeset	327
a61af66fc99e Initial load duke parents: diff changeset	328 void interface_method_at_put(int which, int class_index, int name_and_type_index) {
a61af66fc99e Initial load duke parents: diff changeset	329 tag_at_put(which, JVM_CONSTANT_InterfaceMethodref);
a61af66fc99e Initial load duke parents: diff changeset	330 *int_at_addr(which) = ((jint) name_and_type_index<<16) \| class_index; // Not so nice
a61af66fc99e Initial load duke parents: diff changeset	331 }
a61af66fc99e Initial load duke parents: diff changeset	332
a61af66fc99e Initial load duke parents: diff changeset	333 void name_and_type_at_put(int which, int name_index, int signature_index) {
a61af66fc99e Initial load duke parents: diff changeset	334 tag_at_put(which, JVM_CONSTANT_NameAndType);
a61af66fc99e Initial load duke parents: diff changeset	335 *int_at_addr(which) = ((jint) signature_index<<16) \| name_index; // Not so nice
a61af66fc99e Initial load duke parents: diff changeset	336 }
a61af66fc99e Initial load duke parents: diff changeset	337
a61af66fc99e Initial load duke parents: diff changeset	338 // Tag query
a61af66fc99e Initial load duke parents: diff changeset	339
a61af66fc99e Initial load duke parents: diff changeset	340 constantTag tag_at(int which) const { return (constantTag)tags()->byte_at_acquire(which); }
a61af66fc99e Initial load duke parents: diff changeset	341
a61af66fc99e Initial load duke parents: diff changeset	342 // Whether the entry is a pointer that must be GC'd.
a61af66fc99e Initial load duke parents: diff changeset	343 bool is_pointer_entry(int which) {
a61af66fc99e Initial load duke parents: diff changeset	344 constantTag tag = tag_at(which);
a61af66fc99e Initial load duke parents: diff changeset	345 return tag.is_klass() \|\|
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	346 tag.is_string() \|\|
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	347 tag.is_object();
0 a61af66fc99e Initial load duke parents: diff changeset	348 }
a61af66fc99e Initial load duke parents: diff changeset	349
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	350 // Whether the entry points to an object for ldc (resolved or not)
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	351 bool is_object_entry(int which) {
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	352 constantTag tag = tag_at(which);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	353 return is_pointer_entry(which) \|\|
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	354 tag.is_unresolved_klass() \|\|
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	355 tag.is_unresolved_string() \|\|
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	356 tag.is_symbol();
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	357 }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	358
0 a61af66fc99e Initial load duke parents: diff changeset	359 // Fetching constants
a61af66fc99e Initial load duke parents: diff changeset	360
a61af66fc99e Initial load duke parents: diff changeset	361 klassOop klass_at(int which, TRAPS) {
a61af66fc99e Initial load duke parents: diff changeset	362 constantPoolHandle h_this(THREAD, this);
a61af66fc99e Initial load duke parents: diff changeset	363 return klass_at_impl(h_this, which, CHECK_NULL);
a61af66fc99e Initial load duke parents: diff changeset	364 }
a61af66fc99e Initial load duke parents: diff changeset	365
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	366 Symbol* klass_name_at(int which); // Returns the name, w/o resolving.
0 a61af66fc99e Initial load duke parents: diff changeset	367
a61af66fc99e Initial load duke parents: diff changeset	368 klassOop resolved_klass_at(int which) { // Used by Compiler
a61af66fc99e Initial load duke parents: diff changeset	369 guarantee(tag_at(which).is_klass(), "Corrupted constant pool");
a61af66fc99e Initial load duke parents: diff changeset	370 // Must do an acquire here in case another thread resolved the klass
a61af66fc99e Initial load duke parents: diff changeset	371 // behind our back, lest we later load stale values thru the oop.
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	372 return klassOop(CPSlot(OrderAccess::load_ptr_acquire(obj_at_addr_raw(which))).get_oop());
0 a61af66fc99e Initial load duke parents: diff changeset	373 }
a61af66fc99e Initial load duke parents: diff changeset	374
a61af66fc99e Initial load duke parents: diff changeset	375 // This method should only be used with a cpool lock or during parsing or gc
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	376 Symbol* unresolved_klass_at(int which) { // Temporary until actual use
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	377 Symbol* s = CPSlot(OrderAccess::load_ptr_acquire(obj_at_addr_raw(which))).get_symbol();
0 a61af66fc99e Initial load duke parents: diff changeset	378 // check that the klass is still unresolved.
a61af66fc99e Initial load duke parents: diff changeset	379 assert(tag_at(which).is_unresolved_klass(), "Corrupted constant pool");
a61af66fc99e Initial load duke parents: diff changeset	380 return s;
a61af66fc99e Initial load duke parents: diff changeset	381 }
a61af66fc99e Initial load duke parents: diff changeset	382
a61af66fc99e Initial load duke parents: diff changeset	383 // RedefineClasses() API support:
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	384 Symbol* klass_at_noresolve(int which) { return klass_name_at(which); }
0 a61af66fc99e Initial load duke parents: diff changeset	385
a61af66fc99e Initial load duke parents: diff changeset	386 jint int_at(int which) {
a61af66fc99e Initial load duke parents: diff changeset	387 assert(tag_at(which).is_int(), "Corrupted constant pool");
a61af66fc99e Initial load duke parents: diff changeset	388 return *int_at_addr(which);
a61af66fc99e Initial load duke parents: diff changeset	389 }
a61af66fc99e Initial load duke parents: diff changeset	390
a61af66fc99e Initial load duke parents: diff changeset	391 jlong long_at(int which) {
a61af66fc99e Initial load duke parents: diff changeset	392 assert(tag_at(which).is_long(), "Corrupted constant pool");
a61af66fc99e Initial load duke parents: diff changeset	393 // return *long_at_addr(which);
a61af66fc99e Initial load duke parents: diff changeset	394 u8 tmp = Bytes::get_native_u8((address)&base()[which]);
a61af66fc99e Initial load duke parents: diff changeset	395 return ((jlong)&tmp);
a61af66fc99e Initial load duke parents: diff changeset	396 }
a61af66fc99e Initial load duke parents: diff changeset	397
a61af66fc99e Initial load duke parents: diff changeset	398 jfloat float_at(int which) {
a61af66fc99e Initial load duke parents: diff changeset	399 assert(tag_at(which).is_float(), "Corrupted constant pool");
a61af66fc99e Initial load duke parents: diff changeset	400 return *float_at_addr(which);
a61af66fc99e Initial load duke parents: diff changeset	401 }
a61af66fc99e Initial load duke parents: diff changeset	402
a61af66fc99e Initial load duke parents: diff changeset	403 jdouble double_at(int which) {
a61af66fc99e Initial load duke parents: diff changeset	404 assert(tag_at(which).is_double(), "Corrupted constant pool");
a61af66fc99e Initial load duke parents: diff changeset	405 u8 tmp = Bytes::get_native_u8((address)&base()[which]);
a61af66fc99e Initial load duke parents: diff changeset	406 return ((jdouble)&tmp);
a61af66fc99e Initial load duke parents: diff changeset	407 }
a61af66fc99e Initial load duke parents: diff changeset	408
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	409 Symbol* symbol_at(int which) {
0 a61af66fc99e Initial load duke parents: diff changeset	410 assert(tag_at(which).is_utf8(), "Corrupted constant pool");
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	411 return slot_at(which).get_symbol();
0 a61af66fc99e Initial load duke parents: diff changeset	412 }
a61af66fc99e Initial load duke parents: diff changeset	413
a61af66fc99e Initial load duke parents: diff changeset	414 oop string_at(int which, TRAPS) {
a61af66fc99e Initial load duke parents: diff changeset	415 constantPoolHandle h_this(THREAD, this);
a61af66fc99e Initial load duke parents: diff changeset	416 return string_at_impl(h_this, which, CHECK_NULL);
a61af66fc99e Initial load duke parents: diff changeset	417 }
a61af66fc99e Initial load duke parents: diff changeset	418
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	419 oop object_at(int which) {
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	420 assert(tag_at(which).is_object(), "Corrupted constant pool");
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	421 return slot_at(which).get_oop();
1138 dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	422 }
dd57230ba8fe 6893268: additional dynamic language related optimizations in C2 twisti parents: 1059 diff changeset	423
431 a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	424 // A "pseudo-string" is an non-string oop that has found is way into
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	425 // a String entry.
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	426 // Under AnonymousClasses this can happen if the user patches a live
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	427 // object into a CONSTANT_String entry of an anonymous class.
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	428 // Method oops internally created for method handles may also
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	429 // use pseudo-strings to link themselves to related metaobjects.
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	430
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	431 bool is_pseudo_string_at(int which);
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	432
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	433 oop pseudo_string_at(int which) {
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	434 assert(tag_at(which).is_string(), "Corrupted constant pool");
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	435 return slot_at(which).get_oop();
431 a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	436 }
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	437
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	438 void pseudo_string_at_put(int which, oop x) {
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	439 assert(AnonymousClasses, "");
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	440 set_pseudo_string(); // mark header
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	441 assert(tag_at(which).is_string() \|\| tag_at(which).is_unresolved_string(), "Corrupted constant pool");
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	442 string_at_put(which, x); // this works just fine
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	443 }
a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	444
0 a61af66fc99e Initial load duke parents: diff changeset	445 // only called when we are sure a string entry is already resolved (via an
a61af66fc99e Initial load duke parents: diff changeset	446 // earlier string_at call.
a61af66fc99e Initial load duke parents: diff changeset	447 oop resolved_string_at(int which) {
a61af66fc99e Initial load duke parents: diff changeset	448 assert(tag_at(which).is_string(), "Corrupted constant pool");
a61af66fc99e Initial load duke parents: diff changeset	449 // Must do an acquire here in case another thread resolved the klass
a61af66fc99e Initial load duke parents: diff changeset	450 // behind our back, lest we later load stale values thru the oop.
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	451 return CPSlot(OrderAccess::load_ptr_acquire(obj_at_addr_raw(which))).get_oop();
0 a61af66fc99e Initial load duke parents: diff changeset	452 }
a61af66fc99e Initial load duke parents: diff changeset	453
a61af66fc99e Initial load duke parents: diff changeset	454 // This method should only be used with a cpool lock or during parsing or gc
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	455 Symbol* unresolved_string_at(int which) { // Temporary until actual use
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	456 Symbol* s = CPSlot(OrderAccess::load_ptr_acquire(obj_at_addr_raw(which))).get_symbol();
0 a61af66fc99e Initial load duke parents: diff changeset	457 // check that the string is still unresolved.
a61af66fc99e Initial load duke parents: diff changeset	458 assert(tag_at(which).is_unresolved_string(), "Corrupted constant pool");
a61af66fc99e Initial load duke parents: diff changeset	459 return s;
a61af66fc99e Initial load duke parents: diff changeset	460 }
a61af66fc99e Initial load duke parents: diff changeset	461
a61af66fc99e Initial load duke parents: diff changeset	462 // Returns an UTF8 for a CONSTANT_String entry at a given index.
a61af66fc99e Initial load duke parents: diff changeset	463 // UTF8 char* representation was chosen to avoid conversion of
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	464 // java_lang_Strings at resolved entries into Symbol*s
0 a61af66fc99e Initial load duke parents: diff changeset	465 // or vice versa.
431 a45484ea312d 6653858: dynamic languages need to be able to load anonymous classes jrose parents: 196 diff changeset	466 // Caller is responsible for checking for pseudo-strings.
0 a61af66fc99e Initial load duke parents: diff changeset	467 char* string_at_noresolve(int which);
a61af66fc99e Initial load duke parents: diff changeset	468
a61af66fc99e Initial load duke parents: diff changeset	469 jint name_and_type_at(int which) {
a61af66fc99e Initial load duke parents: diff changeset	470 assert(tag_at(which).is_name_and_type(), "Corrupted constant pool");
a61af66fc99e Initial load duke parents: diff changeset	471 return *int_at_addr(which);
a61af66fc99e Initial load duke parents: diff changeset	472 }
a61af66fc99e Initial load duke parents: diff changeset	473
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	474 int method_handle_ref_kind_at(int which) {
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	475 assert(tag_at(which).is_method_handle(), "Corrupted constant pool");
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	476 return extract_low_short_from_int(*int_at_addr(which)); // mask out unwanted ref_index bits
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	477 }
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	478 int method_handle_index_at(int which) {
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	479 assert(tag_at(which).is_method_handle(), "Corrupted constant pool");
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	480 return extract_high_short_from_int(*int_at_addr(which)); // shift out unwanted ref_kind bits
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	481 }
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	482 int method_type_index_at(int which) {
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	483 assert(tag_at(which).is_method_type(), "Corrupted constant pool");
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	484 return *int_at_addr(which);
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	485 }
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	486 // Derived queries:
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	487 Symbol* method_handle_name_ref_at(int which) {
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	488 int member = method_handle_index_at(which);
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	489 return impl_name_ref_at(member, true);
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	490 }
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	491 Symbol* method_handle_signature_ref_at(int which) {
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	492 int member = method_handle_index_at(which);
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	493 return impl_signature_ref_at(member, true);
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	494 }
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	495 int method_handle_klass_index_at(int which) {
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	496 int member = method_handle_index_at(which);
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	497 return impl_klass_ref_index_at(member, true);
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	498 }
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	499 Symbol* method_type_signature_at(int which) {
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	500 int sym = method_type_index_at(which);
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	501 return symbol_at(sym);
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	502 }
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	503
2011 dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	504 int invoke_dynamic_name_and_type_ref_index_at(int which) {
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	505 assert(tag_at(which).is_invoke_dynamic(), "Corrupted constant pool");
2011 dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	506 return extract_high_short_from_int(*int_at_addr(which));
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	507 }
2011 dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	508 int invoke_dynamic_bootstrap_specifier_index(int which) {
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	509 assert(tag_at(which).value() == JVM_CONSTANT_InvokeDynamic, "Corrupted constant pool");
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	510 return extract_low_short_from_int(*int_at_addr(which));
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	511 }
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	512 int invoke_dynamic_operand_base(int which) {
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	513 int bootstrap_specifier_index = invoke_dynamic_bootstrap_specifier_index(which);
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	514 return operand_offset_at(operands(), bootstrap_specifier_index);
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	515 }
2011 dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	516 // The first part of the operands array consists of an index into the second part.
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	517 // Extract a 32-bit index value from the first part.
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	518 static int operand_offset_at(typeArrayOop operands, int bootstrap_specifier_index) {
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	519 int n = (bootstrap_specifier_index * 2);
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	520 assert(n >= 0 && n+2 <= operands->length(), "oob");
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	521 // The first 32-bit index points to the beginning of the second part
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	522 // of the operands array. Make sure this index is in the first part.
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	523 DEBUG_ONLY(int second_part = build_int_from_shorts(operands->short_at(0),
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	524 operands->short_at(1)));
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	525 assert(second_part == 0 \|\| n+2 <= second_part, "oob (2)");
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	526 int offset = build_int_from_shorts(operands->short_at(n+0),
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	527 operands->short_at(n+1));
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	528 // The offset itself must point into the second part of the array.
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	529 assert(offset == 0 \|\| offset >= second_part && offset <= operands->length(), "oob (3)");
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	530 return offset;
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	531 }
2011 dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	532 static void operand_offset_at_put(typeArrayOop operands, int bootstrap_specifier_index, int offset) {
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	533 int n = bootstrap_specifier_index * 2;
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	534 assert(n >= 0 && n+2 <= operands->length(), "oob");
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	535 operands->short_at_put(n+0, extract_low_short_from_int(offset));
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	536 operands->short_at_put(n+1, extract_high_short_from_int(offset));
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	537 }
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	538 static int operand_array_length(typeArrayOop operands) {
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	539 if (operands == NULL \|\| operands->length() == 0) return 0;
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	540 int second_part = operand_offset_at(operands, 0);
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	541 return (second_part / 2);
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	542 }
3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	543
2011 dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	544 #ifdef ASSERT
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	545 // operand tuples fit together exactly, end to end
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	546 static int operand_limit_at(typeArrayOop operands, int bootstrap_specifier_index) {
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	547 int nextidx = bootstrap_specifier_index + 1;
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	548 if (nextidx == operand_array_length(operands))
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	549 return operands->length();
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	550 else
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	551 return operand_offset_at(operands, nextidx);
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	552 }
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	553 int invoke_dynamic_operand_limit(int which) {
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	554 int bootstrap_specifier_index = invoke_dynamic_bootstrap_specifier_index(which);
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	555 return operand_limit_at(operands(), bootstrap_specifier_index);
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	556 }
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	557 #endif //ASSERT
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	558
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	559 // layout of InvokeDynamic bootstrap method specifier (in second part of operands array):
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	560 enum {
3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	561 _indy_bsm_offset = 0, // CONSTANT_MethodHandle bsm
2011 dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	562 _indy_argc_offset = 1, // u2 argc
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	563 _indy_argv_offset = 2 // u2 argv[argc]
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	564 };
1660 083fde3b838e 6964498: JSR 292 invokedynamic sites need local bootstrap methods jrose parents: 1602 diff changeset	565 int invoke_dynamic_bootstrap_method_ref_index_at(int which) {
083fde3b838e 6964498: JSR 292 invokedynamic sites need local bootstrap methods jrose parents: 1602 diff changeset	566 assert(tag_at(which).is_invoke_dynamic(), "Corrupted constant pool");
2011 dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	567 if (tag_at(which).value() == JVM_CONSTANT_InvokeDynamicTrans)
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	568 return extract_low_short_from_int(*int_at_addr(which));
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	569 int op_base = invoke_dynamic_operand_base(which);
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	570 return operands()->short_at(op_base + _indy_bsm_offset);
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	571 }
3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	572 int invoke_dynamic_argument_count_at(int which) {
3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	573 assert(tag_at(which).is_invoke_dynamic(), "Corrupted constant pool");
2011 dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	574 if (tag_at(which).value() == JVM_CONSTANT_InvokeDynamicTrans)
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	575 return 0;
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	576 int op_base = invoke_dynamic_operand_base(which);
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	577 int argc = operands()->short_at(op_base + _indy_argc_offset);
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	578 DEBUG_ONLY(int end_offset = op_base + _indy_argv_offset + argc;
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	579 int next_offset = invoke_dynamic_operand_limit(which));
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	580 assert(end_offset == next_offset, "matched ending");
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	581 return argc;
3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	582 }
3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	583 int invoke_dynamic_argument_index_at(int which, int j) {
2011 dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	584 int op_base = invoke_dynamic_operand_base(which);
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	585 DEBUG_ONLY(int argc = operands()->short_at(op_base + _indy_argc_offset));
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	586 assert((uint)j < (uint)argc, "oob");
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	587 return operands()->short_at(op_base + _indy_argv_offset + j);
1660 083fde3b838e 6964498: JSR 292 invokedynamic sites need local bootstrap methods jrose parents: 1602 diff changeset	588 }
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	589
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	590 // The following methods (name/signature/klass_ref_at, klass_ref_at_noresolve,
1059 389049f3f393 6858164: invokedynamic code needs some cleanup (post-6655638) jrose parents: 726 diff changeset	591 // name_and_type_ref_index_at) all expect to be passed indices obtained
1910 d1896d1dda3e 6981788: GC map generator sometimes picks up the wrong kind of instruction operand jrose parents: 1660 diff changeset	592 // directly from the bytecode.
1059 389049f3f393 6858164: invokedynamic code needs some cleanup (post-6655638) jrose parents: 726 diff changeset	593 // If the indices are meant to refer to fields or methods, they are
1910 d1896d1dda3e 6981788: GC map generator sometimes picks up the wrong kind of instruction operand jrose parents: 1660 diff changeset	594 // actually rewritten constant pool cache indices.
1059 389049f3f393 6858164: invokedynamic code needs some cleanup (post-6655638) jrose parents: 726 diff changeset	595 // The routine remap_instruction_operand_from_cache manages the adjustment
389049f3f393 6858164: invokedynamic code needs some cleanup (post-6655638) jrose parents: 726 diff changeset	596 // of these values back to constant pool indices.
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	597
1059 389049f3f393 6858164: invokedynamic code needs some cleanup (post-6655638) jrose parents: 726 diff changeset	598 // There are also "uncached" versions which do not adjust the operand index; see below.
0 a61af66fc99e Initial load duke parents: diff changeset	599
1910 d1896d1dda3e 6981788: GC map generator sometimes picks up the wrong kind of instruction operand jrose parents: 1660 diff changeset	600 // FIXME: Consider renaming these with a prefix "cached_" to make the distinction clear.
d1896d1dda3e 6981788: GC map generator sometimes picks up the wrong kind of instruction operand jrose parents: 1660 diff changeset	601 // In a few cases (the verifier) there are uses before a cpcache has been built,
d1896d1dda3e 6981788: GC map generator sometimes picks up the wrong kind of instruction operand jrose parents: 1660 diff changeset	602 // which are handled by a dynamic check in remap_instruction_operand_from_cache.
d1896d1dda3e 6981788: GC map generator sometimes picks up the wrong kind of instruction operand jrose parents: 1660 diff changeset	603 // FIXME: Remove the dynamic check, and adjust all callers to specify the correct mode.
d1896d1dda3e 6981788: GC map generator sometimes picks up the wrong kind of instruction operand jrose parents: 1660 diff changeset	604
0 a61af66fc99e Initial load duke parents: diff changeset	605 // Lookup for entries consisting of (klass_index, name_and_type index)
a61af66fc99e Initial load duke parents: diff changeset	606 klassOop klass_ref_at(int which, TRAPS);
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	607 Symbol* klass_ref_at_noresolve(int which);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	608 Symbol* name_ref_at(int which) { return impl_name_ref_at(which, false); }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	609 Symbol* signature_ref_at(int which) { return impl_signature_ref_at(which, false); }
0 a61af66fc99e Initial load duke parents: diff changeset	610
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	611 int klass_ref_index_at(int which) { return impl_klass_ref_index_at(which, false); }
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	612 int name_and_type_ref_index_at(int which) { return impl_name_and_type_ref_index_at(which, false); }
0 a61af66fc99e Initial load duke parents: diff changeset	613
a61af66fc99e Initial load duke parents: diff changeset	614 // Lookup for entries consisting of (name_index, signature_index)
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	615 int name_ref_index_at(int which_nt); // == low-order jshort of name_and_type_at(which_nt)
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	616 int signature_ref_index_at(int which_nt); // == high-order jshort of name_and_type_at(which_nt)
0 a61af66fc99e Initial load duke parents: diff changeset	617
a61af66fc99e Initial load duke parents: diff changeset	618 BasicType basic_type_for_signature_at(int which);
a61af66fc99e Initial load duke parents: diff changeset	619
a61af66fc99e Initial load duke parents: diff changeset	620 // Resolve string constants (to prevent allocation during compilation)
a61af66fc99e Initial load duke parents: diff changeset	621 void resolve_string_constants(TRAPS) {
a61af66fc99e Initial load duke parents: diff changeset	622 constantPoolHandle h_this(THREAD, this);
a61af66fc99e Initial load duke parents: diff changeset	623 resolve_string_constants_impl(h_this, CHECK);
a61af66fc99e Initial load duke parents: diff changeset	624 }
a61af66fc99e Initial load duke parents: diff changeset	625
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	626 private:
3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	627 enum { _no_index_sentinel = -1, _possible_index_sentinel = -2 };
3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	628 public:
3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	629
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	630 // Resolve late bound constants.
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	631 oop resolve_constant_at(int index, TRAPS) {
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	632 constantPoolHandle h_this(THREAD, this);
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	633 return resolve_constant_at_impl(h_this, index, _no_index_sentinel, THREAD);
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	634 }
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	635
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	636 oop resolve_cached_constant_at(int cache_index, TRAPS) {
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	637 constantPoolHandle h_this(THREAD, this);
1913 3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	638 return resolve_constant_at_impl(h_this, _no_index_sentinel, cache_index, THREAD);
3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	639 }
3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	640
3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	641 oop resolve_possibly_cached_constant_at(int pool_index, TRAPS) {
3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	642 constantPoolHandle h_this(THREAD, this);
3b2dea75431e 6984311: JSR 292 needs optional bootstrap method parameters jrose parents: 1910 diff changeset	643 return resolve_constant_at_impl(h_this, pool_index, _possible_index_sentinel, THREAD);
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	644 }
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	645
0 a61af66fc99e Initial load duke parents: diff changeset	646 // Klass name matches name at offset
a61af66fc99e Initial load duke parents: diff changeset	647 bool klass_name_at_matches(instanceKlassHandle k, int which);
a61af66fc99e Initial load duke parents: diff changeset	648
a61af66fc99e Initial load duke parents: diff changeset	649 // Sizing
113 ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	650 int length() const { return _length; }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	651 void set_length(int length) { _length = length; }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	652
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	653 // Tells whether index is within bounds.
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	654 bool is_within_bounds(int index) const {
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	655 return 0 <= index && index < length();
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	656 }
ba764ed4b6f2 6420645: Create a vm that uses compressed oops for up to 32gb heapsizes coleenp parents: 0 diff changeset	657
0 a61af66fc99e Initial load duke parents: diff changeset	658 static int header_size() { return sizeof(constantPoolOopDesc)/HeapWordSize; }
a61af66fc99e Initial load duke parents: diff changeset	659 static int object_size(int length) { return align_object_size(header_size() + length); }
a61af66fc99e Initial load duke parents: diff changeset	660 int object_size() { return object_size(length()); }
a61af66fc99e Initial load duke parents: diff changeset	661
518 0af8b0718fc9 6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark" jmasa parents: 431 diff changeset	662 bool is_conc_safe() { return _is_conc_safe; }
0af8b0718fc9 6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark" jmasa parents: 431 diff changeset	663 void set_is_conc_safe(bool v) { _is_conc_safe = v; }
0af8b0718fc9 6692899: CMS: many vm.parallel_class_loading tests fail with assert "missing Printezis mark" jmasa parents: 431 diff changeset	664
0 a61af66fc99e Initial load duke parents: diff changeset	665 friend class constantPoolKlass;
a61af66fc99e Initial load duke parents: diff changeset	666 friend class ClassFileParser;
a61af66fc99e Initial load duke parents: diff changeset	667 friend class SystemDictionary;
a61af66fc99e Initial load duke parents: diff changeset	668
a61af66fc99e Initial load duke parents: diff changeset	669 // Used by compiler to prevent classloading.
a61af66fc99e Initial load duke parents: diff changeset	670 static klassOop klass_at_if_loaded (constantPoolHandle this_oop, int which);
a61af66fc99e Initial load duke parents: diff changeset	671 static klassOop klass_ref_at_if_loaded (constantPoolHandle this_oop, int which);
a61af66fc99e Initial load duke parents: diff changeset	672 // Same as above - but does LinkResolving.
a61af66fc99e Initial load duke parents: diff changeset	673 static klassOop klass_ref_at_if_loaded_check(constantPoolHandle this_oop, int which, TRAPS);
a61af66fc99e Initial load duke parents: diff changeset	674
a61af66fc99e Initial load duke parents: diff changeset	675 // Routines currently used for annotations (only called by jvm.cpp) but which might be used in the
1910 d1896d1dda3e 6981788: GC map generator sometimes picks up the wrong kind of instruction operand jrose parents: 1660 diff changeset	676 // future by other Java code. These take constant pool indices rather than
0 a61af66fc99e Initial load duke parents: diff changeset	677 // constant pool cache indices as do the peer methods above.
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	678 Symbol* uncached_klass_ref_at_noresolve(int which);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	679 Symbol* uncached_name_ref_at(int which) { return impl_name_ref_at(which, true); }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	680 Symbol* uncached_signature_ref_at(int which) { return impl_signature_ref_at(which, true); }
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	681 int uncached_klass_ref_index_at(int which) { return impl_klass_ref_index_at(which, true); }
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	682 int uncached_name_and_type_ref_index_at(int which) { return impl_name_and_type_ref_index_at(which, true); }
0 a61af66fc99e Initial load duke parents: diff changeset	683
a61af66fc99e Initial load duke parents: diff changeset	684 // Sharing
a61af66fc99e Initial load duke parents: diff changeset	685 int pre_resolve_shared_klasses(TRAPS);
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	686 void shared_symbols_iterate(SymbolClosure* closure0);
0 a61af66fc99e Initial load duke parents: diff changeset	687 void shared_tags_iterate(OopClosure* closure0);
a61af66fc99e Initial load duke parents: diff changeset	688 void shared_strings_iterate(OopClosure* closure0);
a61af66fc99e Initial load duke parents: diff changeset	689
a61af66fc99e Initial load duke parents: diff changeset	690 // Debugging
a61af66fc99e Initial load duke parents: diff changeset	691 const char* printable_name_at(int which) PRODUCT_RETURN0;
a61af66fc99e Initial load duke parents: diff changeset	692
1565 ab102d5d923e 6939207: refactor constant pool index processing jrose parents: 1138 diff changeset	693 #ifdef ASSERT
ab102d5d923e 6939207: refactor constant pool index processing jrose parents: 1138 diff changeset	694 enum { CPCACHE_INDEX_TAG = 0x10000 }; // helps keep CP cache indices distinct from CP indices
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	695 #else
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	696 enum { CPCACHE_INDEX_TAG = 0 }; // in product mode, this zero value is a no-op
1565 ab102d5d923e 6939207: refactor constant pool index processing jrose parents: 1138 diff changeset	697 #endif //ASSERT
ab102d5d923e 6939207: refactor constant pool index processing jrose parents: 1138 diff changeset	698
0 a61af66fc99e Initial load duke parents: diff changeset	699 private:
a61af66fc99e Initial load duke parents: diff changeset	700
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	701 Symbol* impl_name_ref_at(int which, bool uncached);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	702 Symbol* impl_signature_ref_at(int which, bool uncached);
726 be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	703 int impl_klass_ref_index_at(int which, bool uncached);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	704 int impl_name_and_type_ref_index_at(int which, bool uncached);
be93aad57795 6655646: dynamic languages need dynamically linked call sites jrose parents: 579 diff changeset	705
1565 ab102d5d923e 6939207: refactor constant pool index processing jrose parents: 1138 diff changeset	706 int remap_instruction_operand_from_cache(int operand); // operand must be biased by CPCACHE_INDEX_TAG
0 a61af66fc99e Initial load duke parents: diff changeset	707
a61af66fc99e Initial load duke parents: diff changeset	708 // Used while constructing constant pool (only by ClassFileParser)
a61af66fc99e Initial load duke parents: diff changeset	709 jint klass_index_at(int which) {
a61af66fc99e Initial load duke parents: diff changeset	710 assert(tag_at(which).is_klass_index(), "Corrupted constant pool");
a61af66fc99e Initial load duke parents: diff changeset	711 return *int_at_addr(which);
a61af66fc99e Initial load duke parents: diff changeset	712 }
a61af66fc99e Initial load duke parents: diff changeset	713
a61af66fc99e Initial load duke parents: diff changeset	714 jint string_index_at(int which) {
a61af66fc99e Initial load duke parents: diff changeset	715 assert(tag_at(which).is_string_index(), "Corrupted constant pool");
a61af66fc99e Initial load duke parents: diff changeset	716 return *int_at_addr(which);
a61af66fc99e Initial load duke parents: diff changeset	717 }
a61af66fc99e Initial load duke parents: diff changeset	718
a61af66fc99e Initial load duke parents: diff changeset	719 // Performs the LinkResolver checks
a61af66fc99e Initial load duke parents: diff changeset	720 static void verify_constant_pool_resolve(constantPoolHandle this_oop, KlassHandle klass, TRAPS);
a61af66fc99e Initial load duke parents: diff changeset	721
a61af66fc99e Initial load duke parents: diff changeset	722 // Implementation of methods that needs an exposed 'this' pointer, in order to
a61af66fc99e Initial load duke parents: diff changeset	723 // handle GC while executing the method
a61af66fc99e Initial load duke parents: diff changeset	724 static klassOop klass_at_impl(constantPoolHandle this_oop, int which, TRAPS);
a61af66fc99e Initial load duke parents: diff changeset	725 static oop string_at_impl(constantPoolHandle this_oop, int which, TRAPS);
a61af66fc99e Initial load duke parents: diff changeset	726
a61af66fc99e Initial load duke parents: diff changeset	727 // Resolve string constants (to prevent allocation during compilation)
a61af66fc99e Initial load duke parents: diff changeset	728 static void resolve_string_constants_impl(constantPoolHandle this_oop, TRAPS);
a61af66fc99e Initial load duke parents: diff changeset	729
1602 136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	730 static oop resolve_constant_at_impl(constantPoolHandle this_oop, int index, int cache_index, TRAPS);
136b78722a08 6939203: JSR 292 needs method handle constants jrose parents: 1579 diff changeset	731
0 a61af66fc99e Initial load duke parents: diff changeset	732 public:
a61af66fc99e Initial load duke parents: diff changeset	733 // Merging constantPoolOop support:
a61af66fc99e Initial load duke parents: diff changeset	734 bool compare_entry_to(int index1, constantPoolHandle cp2, int index2, TRAPS);
2011 dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	735 void copy_cp_to(int start_i, int end_i, constantPoolHandle to_cp, int to_i, TRAPS) {
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	736 constantPoolHandle h_this(THREAD, this);
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	737 copy_cp_to_impl(h_this, start_i, end_i, to_cp, to_i, THREAD);
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	738 }
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	739 static void copy_cp_to_impl(constantPoolHandle from_cp, int start_i, int end_i, constantPoolHandle to_cp, int to_i, TRAPS);
dad31fc330cd 7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute jrose parents: 1972 diff changeset	740 static void copy_entry_to(constantPoolHandle from_cp, int from_i, constantPoolHandle to_cp, int to_i, TRAPS);
0 a61af66fc99e Initial load duke parents: diff changeset	741 int find_matching_entry(int pattern_i, constantPoolHandle search_cp, TRAPS);
a61af66fc99e Initial load duke parents: diff changeset	742 int orig_length() const { return _orig_length; }
a61af66fc99e Initial load duke parents: diff changeset	743 void set_orig_length(int orig_length) { _orig_length = orig_length; }
a61af66fc99e Initial load duke parents: diff changeset	744
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	745 // Decrease ref counts of symbols that are in the constant pool
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	746 // when the holder class is unloaded
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	747 void unreference_symbols();
0 a61af66fc99e Initial load duke parents: diff changeset	748
a61af66fc99e Initial load duke parents: diff changeset	749 // JVMTI accesss - GetConstantPool, RetransformClasses, ...
a61af66fc99e Initial load duke parents: diff changeset	750 friend class JvmtiConstantPoolReconstituter;
a61af66fc99e Initial load duke parents: diff changeset	751
a61af66fc99e Initial load duke parents: diff changeset	752 private:
a61af66fc99e Initial load duke parents: diff changeset	753 jint cpool_entry_size(jint idx);
a61af66fc99e Initial load duke parents: diff changeset	754 jint hash_entries_to(SymbolHashMap symmap, SymbolHashMap classmap);
a61af66fc99e Initial load duke parents: diff changeset	755
a61af66fc99e Initial load duke parents: diff changeset	756 // Copy cpool bytes into byte array.
a61af66fc99e Initial load duke parents: diff changeset	757 // Returns:
a61af66fc99e Initial load duke parents: diff changeset	758 // int > 0, count of the raw cpool bytes that have been copied
a61af66fc99e Initial load duke parents: diff changeset	759 // 0, OutOfMemory error
a61af66fc99e Initial load duke parents: diff changeset	760 // -1, Internal error
a61af66fc99e Initial load duke parents: diff changeset	761 int copy_cpool_bytes(int cpool_size,
a61af66fc99e Initial load duke parents: diff changeset	762 SymbolHashMap* tbl,
a61af66fc99e Initial load duke parents: diff changeset	763 unsigned char *bytes);
a61af66fc99e Initial load duke parents: diff changeset	764 };
a61af66fc99e Initial load duke parents: diff changeset	765
a61af66fc99e Initial load duke parents: diff changeset	766 class SymbolHashMapEntry : public CHeapObj {
a61af66fc99e Initial load duke parents: diff changeset	767 private:
a61af66fc99e Initial load duke parents: diff changeset	768 unsigned int _hash; // 32-bit hash for item
a61af66fc99e Initial load duke parents: diff changeset	769 SymbolHashMapEntry* _next; // Next element in the linked list for this bucket
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	770 Symbol* _symbol; // 1-st part of the mapping: symbol => value
0 a61af66fc99e Initial load duke parents: diff changeset	771 u2 _value; // 2-nd part of the mapping: symbol => value
a61af66fc99e Initial load duke parents: diff changeset	772
a61af66fc99e Initial load duke parents: diff changeset	773 public:
a61af66fc99e Initial load duke parents: diff changeset	774 unsigned int hash() const { return _hash; }
a61af66fc99e Initial load duke parents: diff changeset	775 void set_hash(unsigned int hash) { _hash = hash; }
a61af66fc99e Initial load duke parents: diff changeset	776
a61af66fc99e Initial load duke parents: diff changeset	777 SymbolHashMapEntry* next() const { return _next; }
a61af66fc99e Initial load duke parents: diff changeset	778 void set_next(SymbolHashMapEntry* next) { _next = next; }
a61af66fc99e Initial load duke parents: diff changeset	779
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	780 Symbol* symbol() const { return _symbol; }
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	781 void set_symbol(Symbol* sym) { _symbol = sym; }
0 a61af66fc99e Initial load duke parents: diff changeset	782
a61af66fc99e Initial load duke parents: diff changeset	783 u2 value() const { return _value; }
a61af66fc99e Initial load duke parents: diff changeset	784 void set_value(u2 value) { _value = value; }
a61af66fc99e Initial load duke parents: diff changeset	785
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	786 SymbolHashMapEntry(unsigned int hash, Symbol* symbol, u2 value)
0 a61af66fc99e Initial load duke parents: diff changeset	787 : _hash(hash), _symbol(symbol), _value(value), _next(NULL) {}
a61af66fc99e Initial load duke parents: diff changeset	788
a61af66fc99e Initial load duke parents: diff changeset	789 }; // End SymbolHashMapEntry class
a61af66fc99e Initial load duke parents: diff changeset	790
a61af66fc99e Initial load duke parents: diff changeset	791
a61af66fc99e Initial load duke parents: diff changeset	792 class SymbolHashMapBucket : public CHeapObj {
a61af66fc99e Initial load duke parents: diff changeset	793
a61af66fc99e Initial load duke parents: diff changeset	794 private:
a61af66fc99e Initial load duke parents: diff changeset	795 SymbolHashMapEntry* _entry;
a61af66fc99e Initial load duke parents: diff changeset	796
a61af66fc99e Initial load duke parents: diff changeset	797 public:
a61af66fc99e Initial load duke parents: diff changeset	798 SymbolHashMapEntry* entry() const { return _entry; }
a61af66fc99e Initial load duke parents: diff changeset	799 void set_entry(SymbolHashMapEntry* entry) { _entry = entry; }
a61af66fc99e Initial load duke parents: diff changeset	800 void clear() { _entry = NULL; }
a61af66fc99e Initial load duke parents: diff changeset	801
a61af66fc99e Initial load duke parents: diff changeset	802 }; // End SymbolHashMapBucket class
a61af66fc99e Initial load duke parents: diff changeset	803
a61af66fc99e Initial load duke parents: diff changeset	804
a61af66fc99e Initial load duke parents: diff changeset	805 class SymbolHashMap: public CHeapObj {
a61af66fc99e Initial load duke parents: diff changeset	806
a61af66fc99e Initial load duke parents: diff changeset	807 private:
a61af66fc99e Initial load duke parents: diff changeset	808 // Default number of entries in the table
a61af66fc99e Initial load duke parents: diff changeset	809 enum SymbolHashMap_Constants {
a61af66fc99e Initial load duke parents: diff changeset	810 _Def_HashMap_Size = 256
a61af66fc99e Initial load duke parents: diff changeset	811 };
a61af66fc99e Initial load duke parents: diff changeset	812
a61af66fc99e Initial load duke parents: diff changeset	813 int _table_size;
a61af66fc99e Initial load duke parents: diff changeset	814 SymbolHashMapBucket* _buckets;
a61af66fc99e Initial load duke parents: diff changeset	815
a61af66fc99e Initial load duke parents: diff changeset	816 void initialize_table(int table_size) {
a61af66fc99e Initial load duke parents: diff changeset	817 _table_size = table_size;
a61af66fc99e Initial load duke parents: diff changeset	818 _buckets = NEW_C_HEAP_ARRAY(SymbolHashMapBucket, table_size);
a61af66fc99e Initial load duke parents: diff changeset	819 for (int index = 0; index < table_size; index++) {
a61af66fc99e Initial load duke parents: diff changeset	820 _buckets[index].clear();
a61af66fc99e Initial load duke parents: diff changeset	821 }
a61af66fc99e Initial load duke parents: diff changeset	822 }
a61af66fc99e Initial load duke parents: diff changeset	823
a61af66fc99e Initial load duke parents: diff changeset	824 public:
a61af66fc99e Initial load duke parents: diff changeset	825
a61af66fc99e Initial load duke parents: diff changeset	826 int table_size() const { return _table_size; }
a61af66fc99e Initial load duke parents: diff changeset	827
a61af66fc99e Initial load duke parents: diff changeset	828 SymbolHashMap() { initialize_table(_Def_HashMap_Size); }
a61af66fc99e Initial load duke parents: diff changeset	829 SymbolHashMap(int table_size) { initialize_table(table_size); }
a61af66fc99e Initial load duke parents: diff changeset	830
a61af66fc99e Initial load duke parents: diff changeset	831 // hash P(31) from Kernighan & Ritchie
a61af66fc99e Initial load duke parents: diff changeset	832 static unsigned int compute_hash(const char* str, int len) {
a61af66fc99e Initial load duke parents: diff changeset	833 unsigned int hash = 0;
a61af66fc99e Initial load duke parents: diff changeset	834 while (len-- > 0) {
a61af66fc99e Initial load duke parents: diff changeset	835 hash = 31hash + (unsigned) str;
a61af66fc99e Initial load duke parents: diff changeset	836 str++;
a61af66fc99e Initial load duke parents: diff changeset	837 }
a61af66fc99e Initial load duke parents: diff changeset	838 return hash;
a61af66fc99e Initial load duke parents: diff changeset	839 }
a61af66fc99e Initial load duke parents: diff changeset	840
a61af66fc99e Initial load duke parents: diff changeset	841 SymbolHashMapEntry* bucket(int i) {
a61af66fc99e Initial load duke parents: diff changeset	842 return _buckets[i].entry();
a61af66fc99e Initial load duke parents: diff changeset	843 }
a61af66fc99e Initial load duke parents: diff changeset	844
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	845 void add_entry(Symbol* sym, u2 value);
3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	846 SymbolHashMapEntry* find_entry(Symbol* sym);
0 a61af66fc99e Initial load duke parents: diff changeset	847
2177 3582bf76420e 6990754: Use native memory and reference counting to implement SymbolTable coleenp parents: 2011 diff changeset	848 u2 symbol_to_value(Symbol* sym) {
0 a61af66fc99e Initial load duke parents: diff changeset	849 SymbolHashMapEntry *entry = find_entry(sym);
a61af66fc99e Initial load duke parents: diff changeset	850 return (entry == NULL) ? 0 : entry->value();
a61af66fc99e Initial load duke parents: diff changeset	851 }
a61af66fc99e Initial load duke parents: diff changeset	852
a61af66fc99e Initial load duke parents: diff changeset	853 ~SymbolHashMap() {
a61af66fc99e Initial load duke parents: diff changeset	854 SymbolHashMapEntry* next;
a61af66fc99e Initial load duke parents: diff changeset	855 for (int i = 0; i < _table_size; i++) {
a61af66fc99e Initial load duke parents: diff changeset	856 for (SymbolHashMapEntry* cur = bucket(i); cur != NULL; cur = next) {
a61af66fc99e Initial load duke parents: diff changeset	857 next = cur->next();
a61af66fc99e Initial load duke parents: diff changeset	858 delete(cur);
a61af66fc99e Initial load duke parents: diff changeset	859 }
a61af66fc99e Initial load duke parents: diff changeset	860 }
a61af66fc99e Initial load duke parents: diff changeset	861 delete _buckets;
a61af66fc99e Initial load duke parents: diff changeset	862 }
a61af66fc99e Initial load duke parents: diff changeset	863 }; // End SymbolHashMap class
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	864
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1913 diff changeset	865 #endif // SHARE_VM_OOPS_CONSTANTPOOLOOP_HPP

Mercurial > hg > truffle

annotate src/share/vm/oops/constantPoolOop.hpp @ 2177:3582bf76420e