Mon, 12 Aug 2019 18:30:40 +0300
8223147: JFR Backport
8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling
8202835: jfr/event/os/TestSystemProcess.java fails on missing events
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens
1 /*
2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #ifndef SHARE_VM_OOPS_OBJARRAYKLASS_HPP
26 #define SHARE_VM_OOPS_OBJARRAYKLASS_HPP
28 #include "classfile/classLoaderData.hpp"
29 #include "memory/specialized_oop_closures.hpp"
30 #include "oops/arrayKlass.hpp"
31 #include "utilities/macros.hpp"
33 // ObjArrayKlass is the klass for objArrays
35 class ObjArrayKlass : public ArrayKlass {
36 friend class VMStructs;
37 private:
38 Klass* _element_klass; // The klass of the elements of this array type
39 Klass* _bottom_klass; // The one-dimensional type (InstanceKlass or TypeArrayKlass)
41 // Constructor
42 ObjArrayKlass(int n, KlassHandle element_klass, Symbol* name);
43 static ObjArrayKlass* allocate(ClassLoaderData* loader_data, int n, KlassHandle klass_handle, Symbol* name, TRAPS);
44 public:
45 // For dummy objects
46 ObjArrayKlass() {}
48 // Instance variables
49 Klass* element_klass() const { return _element_klass; }
50 void set_element_klass(Klass* k) { _element_klass = k; }
51 Klass** element_klass_addr() { return &_element_klass; }
53 Klass* bottom_klass() const { return _bottom_klass; }
54 void set_bottom_klass(Klass* k) { _bottom_klass = k; }
55 Klass** bottom_klass_addr() { return &_bottom_klass; }
57 // Compiler/Interpreter offset
58 static ByteSize element_klass_offset() { return in_ByteSize(offset_of(ObjArrayKlass, _element_klass)); }
60 // Dispatched operation
61 bool can_be_primary_super_slow() const;
62 GrowableArray<Klass*>* compute_secondary_supers(int num_extra_slots);
63 bool compute_is_subtype_of(Klass* k);
64 bool oop_is_objArray_slow() const { return true; }
65 int oop_size(oop obj) const;
67 // Allocation
68 static Klass* allocate_objArray_klass(ClassLoaderData* loader_data,
69 int n, KlassHandle element_klass, TRAPS);
71 objArrayOop allocate(int length, TRAPS);
72 oop multi_allocate(int rank, jint* sizes, TRAPS);
74 // Copying
75 void copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS);
77 // Compute protection domain
78 oop protection_domain() const { return bottom_klass()->protection_domain(); }
80 private:
81 // Either oop or narrowOop depending on UseCompressedOops.
82 // must be called from within ObjArrayKlass.cpp
83 template <class T> void do_copy(arrayOop s, T* src, arrayOop d,
84 T* dst, int length, TRAPS);
85 protected:
86 // Returns the ObjArrayKlass for n'th dimension.
87 virtual Klass* array_klass_impl(bool or_null, int n, TRAPS);
89 // Returns the array class with this class as element type.
90 virtual Klass* array_klass_impl(bool or_null, TRAPS);
92 public:
93 // Casting from Klass*
94 static ObjArrayKlass* cast(Klass* k) {
95 assert(k->oop_is_objArray(), "cast to ObjArrayKlass");
96 return (ObjArrayKlass*) k;
97 }
99 // Sizing
100 static int header_size() { return sizeof(ObjArrayKlass)/HeapWordSize; }
101 int size() const { return ArrayKlass::static_size(header_size()); }
103 // Initialization (virtual from Klass)
104 void initialize(TRAPS);
106 // Garbage collection
107 void oop_follow_contents(oop obj);
108 inline void oop_follow_contents(oop obj, int index);
109 template <class T> inline void objarray_follow_contents(oop obj, int index);
111 int oop_adjust_pointers(oop obj);
113 // Parallel Scavenge and Parallel Old
114 PARALLEL_GC_DECLS
115 #if INCLUDE_ALL_GCS
116 inline void oop_follow_contents(ParCompactionManager* cm, oop obj, int index);
117 template <class T> inline void
118 objarray_follow_contents(ParCompactionManager* cm, oop obj, int index);
119 #endif // INCLUDE_ALL_GCS
121 // Iterators
122 int oop_oop_iterate(oop obj, ExtendedOopClosure* blk) {
123 return oop_oop_iterate_v(obj, blk);
124 }
125 int oop_oop_iterate_m(oop obj, ExtendedOopClosure* blk, MemRegion mr) {
126 return oop_oop_iterate_v_m(obj, blk, mr);
127 }
128 #define ObjArrayKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix) \
129 int oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk); \
130 int oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk, \
131 MemRegion mr); \
132 int oop_oop_iterate_range##nv_suffix(oop obj, OopClosureType* blk, \
133 int start, int end);
135 ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayKlass_OOP_OOP_ITERATE_DECL)
136 ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayKlass_OOP_OOP_ITERATE_DECL)
138 // JVM support
139 jint compute_modifier_flags(TRAPS) const;
141 public:
142 // Printing
143 void print_on(outputStream* st) const;
144 void print_value_on(outputStream* st) const;
146 void oop_print_value_on(oop obj, outputStream* st);
147 #ifndef PRODUCT
148 void oop_print_on (oop obj, outputStream* st);
149 #endif //PRODUCT
151 const char* internal_name() const;
153 // Verification
154 void verify_on(outputStream* st);
156 void oop_verify_on(oop obj, outputStream* st);
157 };
159 #endif // SHARE_VM_OOPS_OBJARRAYKLASS_HPP