Mercurial > hg > truffle
annotate src/share/vm/code/dependencies.hpp @ 9012:2979aaac95af
assumptions: enable NoFinalizableSubclass assumption
| author | Bernhard Urban <bernhard.urban@jku.at> |
|---|---|
| date | Thu, 11 Apr 2013 22:38:53 +0200 |
| parents | 707b20dd9512 |
| children | d8041d695d19 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
2 * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1123
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1123
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:
1123
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_CODE_DEPENDENCIES_HPP |
| 26 #define SHARE_VM_CODE_DEPENDENCIES_HPP | |
| 27 | |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
28 #include "ci/ciCallSite.hpp" |
| 1972 | 29 #include "ci/ciKlass.hpp" |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
30 #include "ci/ciMethodHandle.hpp" |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
31 #include "classfile/systemDictionary.hpp" |
| 1972 | 32 #include "code/compressedStream.hpp" |
| 33 #include "code/nmethod.hpp" | |
| 34 #include "utilities/growableArray.hpp" | |
| 35 | |
| 0 | 36 //** Dependencies represent assertions (approximate invariants) within |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
37 // the runtime system, e.g. class hierarchy changes. An example is an |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
38 // assertion that a given method is not overridden; another example is |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
39 // that a type has only one concrete subtype. Compiled code which |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
40 // relies on such assertions must be discarded if they are overturned |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
41 // by changes in the runtime system. We can think of these assertions |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
42 // as approximate invariants, because we expect them to be overturned |
| 0 | 43 // very infrequently. We are willing to perform expensive recovery |
| 44 // operations when they are overturned. The benefit, of course, is | |
| 45 // performing optimistic optimizations (!) on the object code. | |
| 46 // | |
| 47 // Changes in the class hierarchy due to dynamic linking or | |
| 48 // class evolution can violate dependencies. There is enough | |
| 49 // indexing between classes and nmethods to make dependency | |
| 50 // checking reasonably efficient. | |
| 51 | |
| 52 class ciEnv; | |
| 53 class nmethod; | |
| 54 class OopRecorder; | |
| 55 class xmlStream; | |
| 56 class CompileLog; | |
| 57 class DepChange; | |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
58 class KlassDepChange; |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
59 class CallSiteDepChange; |
| 0 | 60 class No_Safepoint_Verifier; |
| 61 | |
| 62 class Dependencies: public ResourceObj { | |
| 63 public: | |
| 64 // Note: In the comments on dependency types, most uses of the terms | |
| 65 // subtype and supertype are used in a "non-strict" or "inclusive" | |
| 66 // sense, and are starred to remind the reader of this fact. | |
| 67 // Strict uses of the terms use the word "proper". | |
| 68 // | |
| 69 // Specifically, every class is its own subtype* and supertype*. | |
| 70 // (This trick is easier than continually saying things like "Y is a | |
| 71 // subtype of X or X itself".) | |
| 72 // | |
| 73 // Sometimes we write X > Y to mean X is a proper supertype of Y. | |
| 74 // The notation X > {Y, Z} means X has proper subtypes Y, Z. | |
| 75 // The notation X.m > Y means that Y inherits m from X, while | |
| 76 // X.m > Y.m means Y overrides X.m. A star denotes abstractness, | |
| 77 // as *I > A, meaning (abstract) interface I is a super type of A, | |
| 78 // or A.*m > B.m, meaning B.m implements abstract method A.m. | |
| 79 // | |
| 80 // In this module, the terms "subtype" and "supertype" refer to | |
| 81 // Java-level reference type conversions, as detected by | |
| 82 // "instanceof" and performed by "checkcast" operations. The method | |
| 83 // Klass::is_subtype_of tests these relations. Note that "subtype" | |
| 84 // is richer than "subclass" (as tested by Klass::is_subclass_of), | |
| 85 // since it takes account of relations involving interface and array | |
| 86 // types. | |
| 87 // | |
| 88 // To avoid needless complexity, dependencies involving array types | |
| 89 // are not accepted. If you need to make an assertion about an | |
| 90 // array type, make the assertion about its corresponding element | |
| 91 // types. Any assertion that might change about an array type can | |
| 92 // be converted to an assertion about its element type. | |
| 93 // | |
| 94 // Most dependencies are evaluated over a "context type" CX, which | |
| 95 // stands for the set Subtypes(CX) of every Java type that is a subtype* | |
| 96 // of CX. When the system loads a new class or interface N, it is | |
| 97 // responsible for re-evaluating changed dependencies whose context | |
| 98 // type now includes N, that is, all super types of N. | |
| 99 // | |
| 100 enum DepType { | |
| 101 end_marker = 0, | |
| 102 | |
| 103 // An 'evol' dependency simply notes that the contents of the | |
| 104 // method were used. If it evolves (is replaced), the nmethod | |
| 105 // must be recompiled. No other dependencies are implied. | |
| 106 evol_method, | |
| 107 FIRST_TYPE = evol_method, | |
| 108 | |
| 109 // A context type CX is a leaf it if has no proper subtype. | |
| 110 leaf_type, | |
| 111 | |
| 112 // An abstract class CX has exactly one concrete subtype CC. | |
| 113 abstract_with_unique_concrete_subtype, | |
| 114 | |
| 115 // The type CX is purely abstract, with no concrete subtype* at all. | |
| 116 abstract_with_no_concrete_subtype, | |
| 117 | |
| 118 // The concrete CX is free of concrete proper subtypes. | |
| 119 concrete_with_no_concrete_subtype, | |
| 120 | |
| 121 // Given a method M1 and a context class CX, the set MM(CX, M1) of | |
| 122 // "concrete matching methods" in CX of M1 is the set of every | |
| 123 // concrete M2 for which it is possible to create an invokevirtual | |
| 124 // or invokeinterface call site that can reach either M1 or M2. | |
| 125 // That is, M1 and M2 share a name, signature, and vtable index. | |
| 126 // We wish to notice when the set MM(CX, M1) is just {M1}, or | |
| 127 // perhaps a set of two {M1,M2}, and issue dependencies on this. | |
| 128 | |
| 129 // The set MM(CX, M1) can be computed by starting with any matching | |
| 130 // concrete M2 that is inherited into CX, and then walking the | |
| 131 // subtypes* of CX looking for concrete definitions. | |
| 132 | |
| 133 // The parameters to this dependency are the method M1 and the | |
| 134 // context class CX. M1 must be either inherited in CX or defined | |
| 135 // in a subtype* of CX. It asserts that MM(CX, M1) is no greater | |
| 136 // than {M1}. | |
| 137 unique_concrete_method, // one unique concrete method under CX | |
| 138 | |
| 139 // An "exclusive" assertion concerns two methods or subtypes, and | |
| 140 // declares that there are at most two (or perhaps later N>2) | |
| 141 // specific items that jointly satisfy the restriction. | |
| 142 // We list all items explicitly rather than just giving their | |
| 143 // count, for robustness in the face of complex schema changes. | |
| 144 | |
| 145 // A context class CX (which may be either abstract or concrete) | |
| 146 // has two exclusive concrete subtypes* C1, C2 if every concrete | |
| 147 // subtype* of CX is either C1 or C2. Note that if neither C1 or C2 | |
| 148 // are equal to CX, then CX itself must be abstract. But it is | |
| 149 // also possible (for example) that C1 is CX (a concrete class) | |
| 150 // and C2 is a proper subtype of C1. | |
| 151 abstract_with_exclusive_concrete_subtypes_2, | |
| 152 | |
| 153 // This dependency asserts that MM(CX, M1) is no greater than {M1,M2}. | |
| 154 exclusive_concrete_methods_2, | |
| 155 | |
| 156 // This dependency asserts that no instances of class or it's | |
| 157 // subclasses require finalization registration. | |
| 158 no_finalizable_subclasses, | |
| 159 | |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
160 // This dependency asserts when the CallSite.target value changed. |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
161 call_site_target_value, |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
162 |
| 0 | 163 TYPE_LIMIT |
| 164 }; | |
| 165 enum { | |
| 166 LG2_TYPE_LIMIT = 4, // assert(TYPE_LIMIT <= (1<<LG2_TYPE_LIMIT)) | |
| 167 | |
| 168 // handy categorizations of dependency types: | |
|
3894
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
169 all_types = ((1 << TYPE_LIMIT) - 1) & ((-1) << FIRST_TYPE), |
|
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
170 |
|
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
171 non_klass_types = (1 << call_site_target_value), |
|
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
172 klass_types = all_types & ~non_klass_types, |
|
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
173 |
|
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
174 non_ctxk_types = (1 << evol_method), |
|
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
175 implicit_ctxk_types = (1 << call_site_target_value), |
|
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
176 explicit_ctxk_types = all_types & ~(non_ctxk_types | implicit_ctxk_types), |
| 0 | 177 |
| 178 max_arg_count = 3, // current maximum number of arguments (incl. ctxk) | |
| 179 | |
| 180 // A "context type" is a class or interface that | |
| 181 // provides context for evaluating a dependency. | |
| 182 // When present, it is one of the arguments (dep_context_arg). | |
| 183 // | |
| 184 // If a dependency does not have a context type, there is a | |
| 185 // default context, depending on the type of the dependency. | |
| 186 // This bit signals that a default context has been compressed away. | |
| 187 default_context_type_bit = (1<<LG2_TYPE_LIMIT) | |
| 188 }; | |
| 189 | |
| 190 static const char* dep_name(DepType dept); | |
| 191 static int dep_args(DepType dept); | |
|
3894
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
192 |
|
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
193 static bool is_klass_type( DepType dept) { return dept_in_mask(dept, klass_types ); } |
|
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
194 |
|
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
195 static bool has_explicit_context_arg(DepType dept) { return dept_in_mask(dept, explicit_ctxk_types); } |
|
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
196 static bool has_implicit_context_arg(DepType dept) { return dept_in_mask(dept, implicit_ctxk_types); } |
|
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
197 |
|
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
198 static int dep_context_arg(DepType dept) { return has_explicit_context_arg(dept) ? 0 : -1; } |
|
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
199 static int dep_implicit_context_arg(DepType dept) { return has_implicit_context_arg(dept) ? 0 : -1; } |
|
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
200 |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
201 static void check_valid_dependency_type(DepType dept); |
| 0 | 202 |
|
7101
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
203 #ifdef GRAAL |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
204 // A Metadata* or object value recorded in an OopRecorder |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
205 class DepValue VALUE_OBJ_CLASS_SPEC { |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
206 private: |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
207 // Unique identifier of the value within the associated OopRecorder that |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
208 // encodes both the category of the value (0: invalid, positive: metadata, negative: object) |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
209 // and the index within a category specific array (metadata: index + 1, object: -(index + 1)) |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
210 int _id; |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
211 |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
212 public: |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
213 DepValue() : _id(0) {} |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
214 DepValue(OopRecorder* rec, Metadata* metadata, DepValue* candidate = NULL) { |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
215 assert(candidate == NULL || candidate->is_metadata(), "oops"); |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
216 if (candidate != NULL && candidate->as_metadata(rec) == metadata) { |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
217 _id = candidate->_id; |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
218 } else { |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
219 _id = rec->find_index(metadata) + 1; |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
220 } |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
221 } |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
222 DepValue(OopRecorder* rec, jobject obj, DepValue* candidate = NULL) { |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
223 assert(candidate == NULL || candidate->is_object(), "oops"); |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
224 if (candidate != NULL && candidate->as_object(rec) == obj) { |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
225 _id = candidate->_id; |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
226 } else { |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
227 _id = -(rec->find_index(obj) + 1); |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
228 } |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
229 } |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
230 |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
231 // Used to sort values in ascending order of index() with metadata values preceding object values |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
232 int sort_key() const { return -_id; } |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
233 |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
234 bool operator == (const DepValue& other) const { return other._id == _id; } |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
235 |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
236 bool is_valid() const { return _id != 0; } |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
237 int index() const { assert(is_valid(), "oops"); return _id < 0 ? -(_id + 1) : _id - 1; } |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
238 bool is_metadata() const { assert(is_valid(), "oops"); return _id > 0; } |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
239 bool is_object() const { assert(is_valid(), "oops"); return _id < 0; } |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
240 |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
241 Metadata* as_metadata(OopRecorder* rec) const { assert(is_metadata(), "oops"); return rec->metadata_at(index()); } |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
242 Klass* as_klass(OopRecorder* rec) const { assert(as_metadata(rec)->is_klass(), "oops"); return (Klass*) as_metadata(rec); } |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
243 Method* as_method(OopRecorder* rec) const { assert(as_metadata(rec)->is_method(), "oops"); return (Method*) as_metadata(rec); } |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
244 jobject as_object(OopRecorder* rec) const { assert(is_object(), "oops"); return rec->oop_at(index()); } |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
245 }; |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
246 #endif |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
247 |
| 0 | 248 private: |
| 249 // State for writing a new set of dependencies: | |
| 250 GrowableArray<int>* _dep_seen; // (seen[h->ident] & (1<<dept)) | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
251 GrowableArray<ciBaseObject*>* _deps[TYPE_LIMIT]; |
|
7094
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
252 #ifdef GRAAL |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
253 bool _using_dep_values; |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
254 GrowableArray<DepValue>* _dep_values[TYPE_LIMIT]; |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
255 #endif |
| 0 | 256 |
| 257 static const char* _dep_name[TYPE_LIMIT]; | |
| 258 static int _dep_args[TYPE_LIMIT]; | |
| 259 | |
| 260 static bool dept_in_mask(DepType dept, int mask) { | |
| 261 return (int)dept >= 0 && dept < TYPE_LIMIT && ((1<<dept) & mask) != 0; | |
| 262 } | |
| 263 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
264 bool note_dep_seen(int dept, ciBaseObject* x) { |
| 0 | 265 assert(dept < BitsPerInt, "oob"); |
| 266 int x_id = x->ident(); | |
| 267 assert(_dep_seen != NULL, "deps must be writable"); | |
| 268 int seen = _dep_seen->at_grow(x_id, 0); | |
| 269 _dep_seen->at_put(x_id, seen | (1<<dept)); | |
| 270 // return true if we've already seen dept/x | |
| 271 return (seen & (1<<dept)) != 0; | |
| 272 } | |
| 273 | |
|
7094
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
274 #ifdef GRAAL |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
275 bool note_dep_seen(int dept, DepValue x) { |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
276 assert(dept < BitsPerInt, "oops"); |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
277 // place metadata deps at even indexes, object deps at odd indexes |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
278 int x_id = x.is_metadata() ? x.index() * 2 : (x.index() * 2) + 1; |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
279 assert(_dep_seen != NULL, "deps must be writable"); |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
280 int seen = _dep_seen->at_grow(x_id, 0); |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
281 _dep_seen->at_put(x_id, seen | (1<<dept)); |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
282 // return true if we've already seen dept/x |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
283 return (seen & (1<<dept)) != 0; |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
284 } |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
285 #endif |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
286 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
287 bool maybe_merge_ctxk(GrowableArray<ciBaseObject*>* deps, |
| 0 | 288 int ctxk_i, ciKlass* ctxk); |
|
7094
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
289 #ifdef GRAAL |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
290 bool maybe_merge_ctxk(GrowableArray<DepValue>* deps, |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
291 int ctxk_i, DepValue ctxk); |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
292 #endif |
| 0 | 293 |
| 294 void sort_all_deps(); | |
| 295 size_t estimate_size_in_bytes(); | |
| 296 | |
| 297 // Initialize _deps, etc. | |
| 298 void initialize(ciEnv* env); | |
| 299 | |
| 300 // State for making a new set of dependencies: | |
| 301 OopRecorder* _oop_recorder; | |
| 302 | |
| 303 // Logging support | |
| 304 CompileLog* _log; | |
| 305 | |
| 306 address _content_bytes; // everything but the oop references, encoded | |
| 307 size_t _size_in_bytes; | |
| 308 | |
| 309 public: | |
| 310 // Make a new empty dependencies set. | |
| 311 Dependencies(ciEnv* env) { | |
| 312 initialize(env); | |
| 313 } | |
|
7094
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
314 #ifdef GRAAL |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
315 Dependencies(Arena* arena, OopRecorder* oop_recorder); |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
316 #endif // GRAAL |
| 0 | 317 |
| 318 private: | |
| 319 // Check for a valid context type. | |
| 320 // Enforce the restriction against array types. | |
| 321 static void check_ctxk(ciKlass* ctxk) { | |
| 322 assert(ctxk->is_instance_klass(), "java types only"); | |
| 323 } | |
| 324 static void check_ctxk_concrete(ciKlass* ctxk) { | |
| 325 assert(is_concrete_klass(ctxk->as_instance_klass()), "must be concrete"); | |
| 326 } | |
| 327 static void check_ctxk_abstract(ciKlass* ctxk) { | |
| 328 check_ctxk(ctxk); | |
| 329 assert(!is_concrete_klass(ctxk->as_instance_klass()), "must be abstract"); | |
| 330 } | |
| 331 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
332 void assert_common_1(DepType dept, ciBaseObject* x); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
333 void assert_common_2(DepType dept, ciBaseObject* x0, ciBaseObject* x1); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
334 void assert_common_3(DepType dept, ciKlass* ctxk, ciBaseObject* x1, ciBaseObject* x2); |
| 0 | 335 |
| 336 public: | |
| 337 // Adding assertions to a new dependency set at compile time: | |
| 338 void assert_evol_method(ciMethod* m); | |
| 339 void assert_leaf_type(ciKlass* ctxk); | |
| 340 void assert_abstract_with_unique_concrete_subtype(ciKlass* ctxk, ciKlass* conck); | |
| 341 void assert_abstract_with_no_concrete_subtype(ciKlass* ctxk); | |
| 342 void assert_concrete_with_no_concrete_subtype(ciKlass* ctxk); | |
| 343 void assert_unique_concrete_method(ciKlass* ctxk, ciMethod* uniqm); | |
| 344 void assert_abstract_with_exclusive_concrete_subtypes(ciKlass* ctxk, ciKlass* k1, ciKlass* k2); | |
| 345 void assert_exclusive_concrete_methods(ciKlass* ctxk, ciMethod* m1, ciMethod* m2); | |
| 346 void assert_has_no_finalizable_subclasses(ciKlass* ctxk); | |
|
3894
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
347 void assert_call_site_target_value(ciCallSite* call_site, ciMethodHandle* method_handle); |
| 0 | 348 |
|
7094
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
349 #ifdef GRAAL |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
350 private: |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
351 static void check_ctxk(Klass* ctxk) { |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
352 assert(ctxk->oop_is_instance(), "java types only"); |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
353 } |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
354 static void check_ctxk_abstract(Klass* ctxk) { |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
355 check_ctxk(ctxk); |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
356 assert(ctxk->is_abstract(), "must be abstract"); |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
357 } |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
358 void assert_common_1(DepType dept, DepValue x); |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
359 void assert_common_2(DepType dept, DepValue x0, DepValue x1); |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
360 |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
361 public: |
|
7101
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
362 void assert_evol_method(Method* m); |
|
9012
2979aaac95af
assumptions: enable NoFinalizableSubclass assumption
Bernhard Urban <bernhard.urban@jku.at>
parents:
8947
diff
changeset
|
363 void assert_has_no_finalizable_subclasses(Klass* ctxk); |
|
7101
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
364 void assert_leaf_type(Klass* ctxk); |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
365 void assert_unique_concrete_method(Klass* ctxk, Method* uniqm); |
|
0778b04fc682
better encoding of dependencies during dependency recording by Graal
Doug Simon <doug.simon@oracle.com>
parents:
7094
diff
changeset
|
366 void assert_abstract_with_unique_concrete_subtype(Klass* ctxk, Klass* conck); |
|
8947
707b20dd9512
draft call site target value assumption
Andreas Woess <andreas.woess@jku.at>
parents:
7101
diff
changeset
|
367 void assert_call_site_target_value(oop callSite, oop methodHandle); |
|
7094
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
368 #endif // GRAAL |
|
eec7173947a1
removed remaining use of the C++ "compiler interface" (i.e. ci) by Graal for installing dependencies
Doug Simon <doug.simon@oracle.com>
parents:
6725
diff
changeset
|
369 |
| 0 | 370 // Define whether a given method or type is concrete. |
| 371 // These methods define the term "concrete" as used in this module. | |
| 372 // For this module, an "abstract" class is one which is non-concrete. | |
| 373 // | |
| 374 // Future optimizations may allow some classes to remain | |
| 375 // non-concrete until their first instantiation, and allow some | |
| 376 // methods to remain non-concrete until their first invocation. | |
| 377 // In that case, there would be a middle ground between concrete | |
| 378 // and abstract (as defined by the Java language and VM). | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
379 static bool is_concrete_klass(Klass* k); // k is instantiable |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
380 static bool is_concrete_method(Method* m); // m is invocable |
| 0 | 381 static Klass* find_finalizable_subclass(Klass* k); |
| 382 | |
| 383 // These versions of the concreteness queries work through the CI. | |
| 384 // The CI versions are allowed to skew sometimes from the VM | |
| 385 // (oop-based) versions. The cost of such a difference is a | |
| 386 // (safely) aborted compilation, or a deoptimization, or a missed | |
| 387 // optimization opportunity. | |
| 388 // | |
| 389 // In order to prevent spurious assertions, query results must | |
| 390 // remain stable within any single ciEnv instance. (I.e., they must | |
| 391 // not go back into the VM to get their value; they must cache the | |
| 392 // bit in the CI, either eagerly or lazily.) | |
| 393 static bool is_concrete_klass(ciInstanceKlass* k); // k appears instantiable | |
| 394 static bool is_concrete_method(ciMethod* m); // m appears invocable | |
| 395 static bool has_finalizable_subclass(ciInstanceKlass* k); | |
| 396 | |
| 397 // As a general rule, it is OK to compile under the assumption that | |
| 398 // a given type or method is concrete, even if it at some future | |
| 399 // point becomes abstract. So dependency checking is one-sided, in | |
| 400 // that it permits supposedly concrete classes or methods to turn up | |
| 401 // as really abstract. (This shouldn't happen, except during class | |
| 402 // evolution, but that's the logic of the checking.) However, if a | |
| 403 // supposedly abstract class or method suddenly becomes concrete, a | |
| 404 // dependency on it must fail. | |
| 405 | |
| 406 // Checking old assertions at run-time (in the VM only): | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
407 static Klass* check_evol_method(Method* m); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
408 static Klass* check_leaf_type(Klass* ctxk); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
409 static Klass* check_abstract_with_unique_concrete_subtype(Klass* ctxk, Klass* conck, |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
410 KlassDepChange* changes = NULL); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
411 static Klass* check_abstract_with_no_concrete_subtype(Klass* ctxk, |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
412 KlassDepChange* changes = NULL); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
413 static Klass* check_concrete_with_no_concrete_subtype(Klass* ctxk, |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
414 KlassDepChange* changes = NULL); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
415 static Klass* check_unique_concrete_method(Klass* ctxk, Method* uniqm, |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
416 KlassDepChange* changes = NULL); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
417 static Klass* check_abstract_with_exclusive_concrete_subtypes(Klass* ctxk, Klass* k1, Klass* k2, |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
418 KlassDepChange* changes = NULL); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
419 static Klass* check_exclusive_concrete_methods(Klass* ctxk, Method* m1, Method* m2, |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
420 KlassDepChange* changes = NULL); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
421 static Klass* check_has_no_finalizable_subclasses(Klass* ctxk, KlassDepChange* changes = NULL); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
422 static Klass* check_call_site_target_value(oop call_site, oop method_handle, CallSiteDepChange* changes = NULL); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
423 // A returned Klass* is NULL if the dependency assertion is still |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
424 // valid. A non-NULL Klass* is a 'witness' to the assertion |
| 0 | 425 // failure, a point in the class hierarchy where the assertion has |
| 426 // been proven false. For example, if check_leaf_type returns | |
| 427 // non-NULL, the value is a subtype of the supposed leaf type. This | |
| 428 // witness value may be useful for logging the dependency failure. | |
| 429 // Note that, when a dependency fails, there may be several possible | |
| 430 // witnesses to the failure. The value returned from the check_foo | |
| 431 // method is chosen arbitrarily. | |
| 432 | |
| 433 // The 'changes' value, if non-null, requests a limited spot-check | |
| 434 // near the indicated recent changes in the class hierarchy. | |
| 435 // It is used by DepStream::spot_check_dependency_at. | |
| 436 | |
| 437 // Detecting possible new assertions: | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
438 static Klass* find_unique_concrete_subtype(Klass* ctxk); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
439 static Method* find_unique_concrete_method(Klass* ctxk, Method* m); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
440 static int find_exclusive_concrete_subtypes(Klass* ctxk, int klen, Klass* k[]); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
441 static int find_exclusive_concrete_methods(Klass* ctxk, int mlen, Method* m[]); |
| 0 | 442 |
| 443 // Create the encoding which will be stored in an nmethod. | |
| 444 void encode_content_bytes(); | |
| 445 | |
| 446 address content_bytes() { | |
| 447 assert(_content_bytes != NULL, "encode it first"); | |
| 448 return _content_bytes; | |
| 449 } | |
| 450 size_t size_in_bytes() { | |
| 451 assert(_content_bytes != NULL, "encode it first"); | |
| 452 return _size_in_bytes; | |
| 453 } | |
| 454 | |
| 455 OopRecorder* oop_recorder() { return _oop_recorder; } | |
| 456 CompileLog* log() { return _log; } | |
| 457 | |
| 458 void copy_to(nmethod* nm); | |
| 459 | |
| 460 void log_all_dependencies(); | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
461 void log_dependency(DepType dept, int nargs, ciBaseObject* args[]) { |
| 0 | 462 write_dependency_to(log(), dept, nargs, args); |
| 463 } | |
| 464 void log_dependency(DepType dept, | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
465 ciBaseObject* x0, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
466 ciBaseObject* x1 = NULL, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
467 ciBaseObject* x2 = NULL) { |
| 0 | 468 if (log() == NULL) return; |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
469 ciBaseObject* args[max_arg_count]; |
| 0 | 470 args[0] = x0; |
| 471 args[1] = x1; | |
| 472 args[2] = x2; | |
| 473 assert(2 < max_arg_count, ""); | |
| 474 log_dependency(dept, dep_args(dept), args); | |
| 475 } | |
| 476 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
477 class DepArgument : public ResourceObj { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
478 private: |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
479 bool _is_oop; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
480 bool _valid; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
481 void* _value; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
482 public: |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
483 DepArgument() : _is_oop(false), _value(NULL), _valid(false) {} |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
484 DepArgument(oop v): _is_oop(true), _value(v), _valid(true) {} |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
485 DepArgument(Metadata* v): _is_oop(false), _value(v), _valid(true) {} |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
486 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
487 bool is_null() const { return _value == NULL; } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
488 bool is_oop() const { return _is_oop; } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
489 bool is_metadata() const { return !_is_oop; } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
490 bool is_klass() const { return is_metadata() && metadata_value()->is_klass(); } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
491 bool is_method() const { return is_metadata() && metadata_value()->is_method(); } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
492 |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
493 oop oop_value() const { assert(_is_oop && _valid, "must be"); return (oop) _value; } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
494 Metadata* metadata_value() const { assert(!_is_oop && _valid, "must be"); return (Metadata*) _value; } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
495 }; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
496 |
| 0 | 497 static void write_dependency_to(CompileLog* log, |
| 498 DepType dept, | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
499 int nargs, ciBaseObject* args[], |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
500 Klass* witness = NULL); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
501 static void write_dependency_to(CompileLog* log, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
502 DepType dept, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
503 int nargs, DepArgument args[], |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
504 Klass* witness = NULL); |
| 0 | 505 static void write_dependency_to(xmlStream* xtty, |
| 506 DepType dept, | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
507 int nargs, DepArgument args[], |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
508 Klass* witness = NULL); |
| 0 | 509 static void print_dependency(DepType dept, |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
510 int nargs, DepArgument args[], |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
511 Klass* witness = NULL); |
| 0 | 512 |
| 513 private: | |
| 514 // helper for encoding common context types as zero: | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
515 static ciKlass* ctxk_encoded_as_null(DepType dept, ciBaseObject* x); |
| 0 | 516 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
517 static Klass* ctxk_encoded_as_null(DepType dept, Metadata* x); |
| 0 | 518 |
| 519 public: | |
| 520 // Use this to iterate over an nmethod's dependency set. | |
| 521 // Works on new and old dependency sets. | |
| 522 // Usage: | |
| 523 // | |
| 524 // ; | |
| 525 // Dependencies::DepType dept; | |
| 526 // for (Dependencies::DepStream deps(nm); deps.next(); ) { | |
| 527 // ... | |
| 528 // } | |
| 529 // | |
| 530 // The caller must be in the VM, since oops are not wrapped in handles. | |
| 531 class DepStream { | |
| 532 private: | |
| 533 nmethod* _code; // null if in a compiler thread | |
| 534 Dependencies* _deps; // null if not in a compiler thread | |
| 535 CompressedReadStream _bytes; | |
| 536 #ifdef ASSERT | |
| 537 size_t _byte_limit; | |
| 538 #endif | |
| 539 | |
| 540 // iteration variables: | |
| 541 DepType _type; | |
| 542 int _xi[max_arg_count+1]; | |
| 543 | |
| 544 void initial_asserts(size_t byte_limit) NOT_DEBUG({}); | |
| 545 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
546 inline Metadata* recorded_metadata_at(int i); |
| 0 | 547 inline oop recorded_oop_at(int i); |
| 548 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
549 Klass* check_klass_dependency(KlassDepChange* changes); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
550 Klass* check_call_site_dependency(CallSiteDepChange* changes); |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
551 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
552 void trace_and_log_witness(Klass* witness); |
| 0 | 553 |
| 554 public: | |
| 555 DepStream(Dependencies* deps) | |
| 556 : _deps(deps), | |
| 557 _code(NULL), | |
| 558 _bytes(deps->content_bytes()) | |
| 559 { | |
| 560 initial_asserts(deps->size_in_bytes()); | |
| 561 } | |
| 562 DepStream(nmethod* code) | |
| 563 : _deps(NULL), | |
| 564 _code(code), | |
| 565 _bytes(code->dependencies_begin()) | |
| 566 { | |
| 567 initial_asserts(code->dependencies_size()); | |
| 568 } | |
| 569 | |
| 570 bool next(); | |
| 571 | |
| 572 DepType type() { return _type; } | |
| 573 int argument_count() { return dep_args(type()); } | |
| 574 int argument_index(int i) { assert(0 <= i && i < argument_count(), "oob"); | |
| 575 return _xi[i]; } | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
576 Metadata* argument(int i); // => recorded_oop_at(argument_index(i)) |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
577 oop argument_oop(int i); // => recorded_oop_at(argument_index(i)) |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
578 Klass* context_type(); |
| 0 | 579 |
|
3894
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
580 bool is_klass_type() { return Dependencies::is_klass_type(type()); } |
|
b27c72d69fd1
7083184: JSR 292: don't store context class argument with call site dependencies
twisti
parents:
3852
diff
changeset
|
581 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
582 Method* method_argument(int i) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
583 Metadata* x = argument(i); |
| 0 | 584 assert(x->is_method(), "type"); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
585 return (Method*) x; |
| 0 | 586 } |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
587 Klass* type_argument(int i) { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
588 Metadata* x = argument(i); |
| 0 | 589 assert(x->is_klass(), "type"); |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
590 return (Klass*) x; |
| 0 | 591 } |
| 592 | |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
593 // The point of the whole exercise: Is this dep still OK? |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
594 Klass* check_dependency() { |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
595 Klass* result = check_klass_dependency(NULL); |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
596 if (result != NULL) return result; |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
597 return check_call_site_dependency(NULL); |
| 0 | 598 } |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
599 |
| 0 | 600 // A lighter version: Checks only around recent changes in a class |
| 601 // hierarchy. (See Universe::flush_dependents_on.) | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
602 Klass* spot_check_dependency_at(DepChange& changes); |
| 0 | 603 |
| 604 // Log the current dependency to xtty or compilation log. | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
605 void log_dependency(Klass* witness = NULL); |
| 0 | 606 |
| 607 // Print the current dependency to tty. | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
608 void print_dependency(Klass* witness = NULL, bool verbose = false); |
| 0 | 609 }; |
| 610 friend class Dependencies::DepStream; | |
| 611 | |
| 612 static void print_statistics() PRODUCT_RETURN; | |
| 613 }; | |
| 614 | |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
615 |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
616 // Every particular DepChange is a sub-class of this class. |
| 0 | 617 class DepChange : public StackObj { |
|
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
0
diff
changeset
|
618 public: |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
619 // What kind of DepChange is this? |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
620 virtual bool is_klass_change() const { return false; } |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
621 virtual bool is_call_site_change() const { return false; } |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
622 |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
623 // Subclass casting with assertions. |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
624 KlassDepChange* as_klass_change() { |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
625 assert(is_klass_change(), "bad cast"); |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
626 return (KlassDepChange*) this; |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
627 } |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
628 CallSiteDepChange* as_call_site_change() { |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
629 assert(is_call_site_change(), "bad cast"); |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
630 return (CallSiteDepChange*) this; |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
631 } |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
632 |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
633 void print(); |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
634 |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
635 public: |
| 0 | 636 enum ChangeType { |
| 637 NO_CHANGE = 0, // an uninvolved klass | |
| 638 Change_new_type, // a newly loaded type | |
| 639 Change_new_sub, // a super with a new subtype | |
| 640 Change_new_impl, // an interface with a new implementation | |
| 641 CHANGE_LIMIT, | |
| 642 Start_Klass = CHANGE_LIMIT // internal indicator for ContextStream | |
| 643 }; | |
| 644 | |
| 645 // Usage: | |
| 646 // for (DepChange::ContextStream str(changes); str.next(); ) { | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
647 // Klass* k = str.klass(); |
| 0 | 648 // switch (str.change_type()) { |
| 649 // ... | |
| 650 // } | |
| 651 // } | |
| 652 class ContextStream : public StackObj { | |
| 653 private: | |
|
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
0
diff
changeset
|
654 DepChange& _changes; |
| 0 | 655 friend class DepChange; |
| 656 | |
| 657 // iteration variables: | |
|
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
0
diff
changeset
|
658 ChangeType _change_type; |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
659 Klass* _klass; |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
660 Array<Klass*>* _ti_base; // i.e., transitive_interfaces |
|
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
0
diff
changeset
|
661 int _ti_index; |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
0
diff
changeset
|
662 int _ti_limit; |
| 0 | 663 |
| 664 // start at the beginning: | |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
665 void start(); |
| 0 | 666 |
|
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
0
diff
changeset
|
667 public: |
| 0 | 668 ContextStream(DepChange& changes) |
| 669 : _changes(changes) | |
| 670 { start(); } | |
| 671 | |
| 672 ContextStream(DepChange& changes, No_Safepoint_Verifier& nsv) | |
| 673 : _changes(changes) | |
| 674 // the nsv argument makes it safe to hold oops like _klass | |
| 675 { start(); } | |
| 676 | |
| 677 bool next(); | |
| 678 | |
|
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
0
diff
changeset
|
679 ChangeType change_type() { return _change_type; } |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
680 Klass* klass() { return _klass; } |
| 0 | 681 }; |
| 682 friend class DepChange::ContextStream; | |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
683 }; |
| 0 | 684 |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
685 |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
686 // A class hierarchy change coming through the VM (under the Compile_lock). |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
687 // The change is structured as a single new type with any number of supers |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
688 // and implemented interface types. Other than the new type, any of the |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
689 // super types can be context types for a relevant dependency, which the |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
690 // new type could invalidate. |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
691 class KlassDepChange : public DepChange { |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
692 private: |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
693 // each change set is rooted in exactly one new type (at present): |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
694 KlassHandle _new_type; |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
695 |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
696 void initialize(); |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
697 |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
698 public: |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
699 // notes the new type, marks it and all its super-types |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
700 KlassDepChange(KlassHandle new_type) |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
701 : _new_type(new_type) |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
702 { |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
703 initialize(); |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
704 } |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
705 |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
706 // cleans up the marks |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
707 ~KlassDepChange(); |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
708 |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
709 // What kind of DepChange is this? |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
710 virtual bool is_klass_change() const { return true; } |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
711 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
712 Klass* new_type() { return _new_type(); } |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
713 |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
714 // involves_context(k) is true if k is new_type or any of the super types |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
3894
diff
changeset
|
715 bool involves_context(Klass* k); |
|
3852
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
716 }; |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
717 |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
718 |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
719 // A CallSite has changed its target. |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
720 class CallSiteDepChange : public DepChange { |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
721 private: |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
722 Handle _call_site; |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
723 Handle _method_handle; |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
724 |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
725 public: |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
726 CallSiteDepChange(Handle call_site, Handle method_handle) |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
727 : _call_site(call_site), |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
728 _method_handle(method_handle) |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
729 { |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
730 assert(_call_site() ->is_a(SystemDictionary::CallSite_klass()), "must be"); |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
731 assert(_method_handle()->is_a(SystemDictionary::MethodHandle_klass()), "must be"); |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
732 } |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
733 |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
734 // What kind of DepChange is this? |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
735 virtual bool is_call_site_change() const { return true; } |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
736 |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
737 oop call_site() const { return _call_site(); } |
|
fdb992d83a87
7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents:
1972
diff
changeset
|
738 oop method_handle() const { return _method_handle(); } |
| 0 | 739 }; |
| 1972 | 740 |
| 741 #endif // SHARE_VM_CODE_DEPENDENCIES_HPP |