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) 2011, 2013, 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_INSTANCECLASSLOADERKLASS_HPP
26 #define SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_HPP
28 #include "oops/instanceKlass.hpp"
29 #include "utilities/macros.hpp"
31 // An InstanceClassLoaderKlass is a specialization of the InstanceKlass. It does
32 // not add any field. It is added to walk the dependencies for the class loader
33 // key that this class loader points to. This is how the loader_data graph is
34 // walked and dependant class loaders are kept alive. I thought we walked
35 // the list later?
37 class InstanceClassLoaderKlass: public InstanceKlass {
38 friend class VMStructs;
39 friend class InstanceKlass;
41 // Constructor
42 InstanceClassLoaderKlass(int vtable_len, int itable_len, int static_field_size, int nonstatic_oop_map_size, ReferenceType rt, AccessFlags access_flags, bool is_anonymous)
43 : InstanceKlass(vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, access_flags, is_anonymous) {}
45 public:
46 virtual bool oop_is_instanceClassLoader() const { return true; }
48 InstanceClassLoaderKlass() { assert(DumpSharedSpaces || UseSharedSpaces, "only for CDS"); }
50 // Iterators
51 int oop_oop_iterate(oop obj, ExtendedOopClosure* blk) {
52 return oop_oop_iterate_v(obj, blk);
53 }
54 int oop_oop_iterate_m(oop obj, ExtendedOopClosure* blk, MemRegion mr) {
55 return oop_oop_iterate_v_m(obj, blk, mr);
56 }
58 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix) \
59 int oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk); \
60 int oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk, MemRegion mr);
62 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL)
63 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL)
65 #if INCLUDE_ALL_GCS
66 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix) \
67 int oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* blk);
69 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)
70 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)
71 #endif // INCLUDE_ALL_GCS
73 // Garbage collection
74 void oop_follow_contents(oop obj);
76 // Parallel Scavenge and Parallel Old
77 PARALLEL_GC_DECLS
78 };
80 #endif // SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_HPP