Mercurial > hg > truffle
annotate src/share/vm/ci/ciObject.hpp @ 14518:d8041d695d19
Merged with jdk9/dev/hotspot changeset 3812c088b945
| author | twisti |
|---|---|
| date | Tue, 11 Mar 2014 18:45:59 -0700 |
| parents | b8f261ba79c6 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1138
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1138
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1138
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_CI_CIOBJECT_HPP |
| 26 #define SHARE_VM_CI_CIOBJECT_HPP | |
| 27 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
28 #include "ci/ciBaseObject.hpp" |
| 1972 | 29 #include "ci/ciClassList.hpp" |
| 30 #include "memory/allocation.hpp" | |
| 31 #include "runtime/handles.hpp" | |
| 32 #include "runtime/jniHandles.hpp" | |
| 33 | |
| 0 | 34 // ciObject |
| 35 // | |
| 36 // This class represents an oop in the HotSpot virtual machine. | |
| 37 // Its subclasses are structured in a hierarchy which mirrors | |
| 38 // an aggregate of the VM's oop and klass hierarchies (see | |
| 39 // oopHierarchy.hpp). Each instance of ciObject holds a handle | |
| 40 // to a corresponding oop on the VM side and provides routines | |
| 41 // for accessing the information in its oop. By using the ciObject | |
| 42 // hierarchy for accessing oops in the VM, the compiler ensures | |
| 43 // that it is safe with respect to garbage collection; that is, | |
| 44 // GC and compilation can proceed independently without | |
| 45 // interference. | |
| 46 // | |
| 47 // Within the VM, the oop and klass hierarchies are separate. | |
| 48 // The compiler interface does not preserve this separation -- | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
49 // the distinction between `Klass*' and `Klass' are not |
| 0 | 50 // reflected in the interface and instead the Klass hierarchy |
| 51 // is directly modeled as the subclasses of ciKlass. | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
52 class ciObject : public ciBaseObject { |
| 0 | 53 CI_PACKAGE_ACCESS |
| 54 friend class ciEnv; | |
| 55 | |
| 56 private: | |
| 57 // A JNI handle referring to an oop in the VM. This | |
| 58 // handle may, in a small set of cases, correctly be NULL. | |
| 59 jobject _handle; | |
| 60 ciKlass* _klass; | |
| 61 | |
| 62 protected: | |
| 63 ciObject(); | |
| 64 ciObject(oop o); | |
| 65 ciObject(Handle h); | |
| 66 ciObject(ciKlass* klass); | |
| 67 | |
| 68 jobject handle() const { return _handle; } | |
| 69 // Get the VM oop that this object holds. | |
| 70 oop get_oop() const { | |
| 71 assert(_handle != NULL, "null oop"); | |
| 72 return JNIHandles::resolve_non_null(_handle); | |
| 73 } | |
| 74 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
75 void init_flags_from(oop x); |
| 0 | 76 |
| 77 // Virtual behavior of the print() method. | |
| 78 virtual void print_impl(outputStream* st) {} | |
| 79 | |
| 80 virtual const char* type_string() { return "ciObject"; } | |
| 81 | |
| 82 public: | |
| 83 // The klass of this ciObject. | |
| 84 ciKlass* klass(); | |
| 85 | |
| 86 // Are two ciObjects equal? | |
| 87 bool equals(ciObject* obj); | |
| 88 | |
| 89 // A hash value for the convenience of compilers. | |
| 90 int hash(); | |
| 91 | |
| 989 | 92 // Tells if this oop has an encoding as a constant. |
|
3402
28a9fe9534ea
7048030: is_scavengable changes causing compiler to embed more constants
kvn
parents:
2426
diff
changeset
|
93 // True if is_perm is true. |
| 989 | 94 // Also true if ScavengeRootsInCode is non-zero. |
| 0 | 95 // If it does not have an encoding, the compiler is responsible for |
| 96 // making other arrangements for dealing with the oop. | |
| 989 | 97 // See ciEnv::make_array |
| 98 bool can_be_constant(); | |
| 99 | |
| 100 // Tells if this oop should be made a constant. | |
|
3402
28a9fe9534ea
7048030: is_scavengable changes causing compiler to embed more constants
kvn
parents:
2426
diff
changeset
|
101 // True if is_perm is true or ScavengeRootsInCode > 1. |
| 989 | 102 bool should_be_constant(); |
| 0 | 103 |
| 989 | 104 // Might this object possibly move during a scavenge operation? |
| 105 // If the answer is true and ScavengeRootsInCode==0, the oop cannot be embedded in code. | |
| 106 bool is_scavengable() { return (_ident & SCAVENGABLE_FLAG) != 0; } | |
| 107 | |
| 0 | 108 // The address which the compiler should embed into the |
| 109 // generated code to represent this oop. This address | |
| 110 // is not the true address of the oop -- it will get patched | |
| 111 // during nmethod creation. | |
| 112 // | |
| 113 // Usage note: no address arithmetic allowed. Oop must | |
| 114 // be registered with the oopRecorder. | |
| 989 | 115 jobject constant_encoding(); |
| 0 | 116 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
117 virtual bool is_object() const { return true; } |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
118 |
| 0 | 119 // What kind of ciObject is this? |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
3402
diff
changeset
|
120 virtual bool is_null_object() const { return false; } |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
3402
diff
changeset
|
121 virtual bool is_call_site() const { return false; } |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
3402
diff
changeset
|
122 virtual bool is_cpcache() const { return false; } |
| 0 | 123 virtual bool is_instance() { return false; } |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
3402
diff
changeset
|
124 virtual bool is_member_name() const { return false; } |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
3402
diff
changeset
|
125 virtual bool is_method_handle() const { return false; } |
|
6822
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6725
diff
changeset
|
126 virtual bool is_method_type() const { return false; } |
| 0 | 127 virtual bool is_array() { return false; } |
| 128 virtual bool is_obj_array() { return false; } | |
| 129 virtual bool is_type_array() { return false; } | |
| 130 | |
| 131 // Is this a type or value which has no associated class? | |
| 132 // It is true of primitive types and null objects. | |
| 133 virtual bool is_classless() const { return false; } | |
|
6972
bd7a7ce2e264
6830717: replay of compilations would help with debugging
minqi
parents:
6822
diff
changeset
|
134 virtual void dump_replay_data(outputStream* st) { /* do nothing */ } |
| 0 | 135 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
136 // Note: some ciObjects refer to oops which have yet to be created. |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
137 // We refer to these as "unloaded". Specifically, there are |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
138 // unloaded instances of java.lang.Class, |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
139 // java.lang.invoke.MethodHandle, and java.lang.invoke.MethodType. |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
140 // By convention the ciNullObject is considered loaded, and |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6266
diff
changeset
|
141 // primitive types are considered loaded. |
| 0 | 142 bool is_loaded() const { |
| 143 return handle() != NULL || is_classless(); | |
| 144 } | |
| 145 | |
| 146 // Subclass casting with assertions. | |
|
6822
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6725
diff
changeset
|
147 ciNullObject* as_null_object() { |
| 0 | 148 assert(is_null_object(), "bad cast"); |
| 149 return (ciNullObject*)this; | |
| 150 } | |
|
6822
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6725
diff
changeset
|
151 ciCallSite* as_call_site() { |
|
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
152 assert(is_call_site(), "bad cast"); |
|
6822
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6725
diff
changeset
|
153 return (ciCallSite*)this; |
|
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
154 } |
|
6822
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6725
diff
changeset
|
155 ciInstance* as_instance() { |
| 0 | 156 assert(is_instance(), "bad cast"); |
| 157 return (ciInstance*)this; | |
| 158 } | |
|
6822
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6725
diff
changeset
|
159 ciMemberName* as_member_name() { |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
3402
diff
changeset
|
160 assert(is_member_name(), "bad cast"); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
3402
diff
changeset
|
161 return (ciMemberName*)this; |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
3402
diff
changeset
|
162 } |
|
6822
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6725
diff
changeset
|
163 ciMethodHandle* as_method_handle() { |
|
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
164 assert(is_method_handle(), "bad cast"); |
|
6822
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6725
diff
changeset
|
165 return (ciMethodHandle*)this; |
|
1138
dd57230ba8fe
6893268: additional dynamic language related optimizations in C2
twisti
parents:
1137
diff
changeset
|
166 } |
|
6822
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6725
diff
changeset
|
167 ciMethodType* as_method_type() { |
|
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6725
diff
changeset
|
168 assert(is_method_type(), "bad cast"); |
|
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6725
diff
changeset
|
169 return (ciMethodType*)this; |
|
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6725
diff
changeset
|
170 } |
|
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6725
diff
changeset
|
171 ciArray* as_array() { |
| 0 | 172 assert(is_array(), "bad cast"); |
| 173 return (ciArray*)this; | |
| 174 } | |
|
6822
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6725
diff
changeset
|
175 ciObjArray* as_obj_array() { |
| 0 | 176 assert(is_obj_array(), "bad cast"); |
| 177 return (ciObjArray*)this; | |
| 178 } | |
|
6822
f6b0eb4e44cf
7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents:
6725
diff
changeset
|
179 ciTypeArray* as_type_array() { |
| 0 | 180 assert(is_type_array(), "bad cast"); |
| 181 return (ciTypeArray*)this; | |
| 182 } | |
| 183 | |
| 184 // Print debugging output about this ciObject. | |
|
6266
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
3402
diff
changeset
|
185 void print(outputStream* st); |
|
1d7922586cf6
7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents:
3402
diff
changeset
|
186 void print() { print(tty); } // GDB cannot handle default arguments |
| 0 | 187 |
| 188 // Print debugging output about the oop this ciObject represents. | |
| 189 void print_oop(outputStream* st = tty); | |
| 190 }; | |
| 1972 | 191 |
| 192 #endif // SHARE_VM_CI_CIOBJECT_HPP |