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src/share/vm/jfr/leakprofiler/chains/bfsClosure.hpp@b985cbb00e68 (annotated)
src/share/vm/jfr/leakprofiler/chains/bfsClosure.hpp
Mon, 12 Aug 2019 18:30:40 +0300
- author
- apetushkov
- date
- Mon, 12 Aug 2019 18:30:40 +0300
- changeset 9858
- b985cbb00e68
- child 9885
- 8e875c964f41
- permissions
- -rw-r--r--
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
| apetushkov@9858 | 1 | /* |
| apetushkov@9858 | 2 | * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved. |
| apetushkov@9858 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| apetushkov@9858 | 4 | * |
| apetushkov@9858 | 5 | * This code is free software; you can redistribute it and/or modify it |
| apetushkov@9858 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| apetushkov@9858 | 7 | * published by the Free Software Foundation. |
| apetushkov@9858 | 8 | * |
| apetushkov@9858 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| apetushkov@9858 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| apetushkov@9858 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| apetushkov@9858 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| apetushkov@9858 | 13 | * accompanied this code). |
| apetushkov@9858 | 14 | * |
| apetushkov@9858 | 15 | * You should have received a copy of the GNU General Public License version |
| apetushkov@9858 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| apetushkov@9858 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| apetushkov@9858 | 18 | * |
| apetushkov@9858 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| apetushkov@9858 | 20 | * or visit www.oracle.com if you need additional information or have any |
| apetushkov@9858 | 21 | * questions. |
| apetushkov@9858 | 22 | * |
| apetushkov@9858 | 23 | */ |
| apetushkov@9858 | 24 | |
| apetushkov@9858 | 25 | #ifndef SHARE_VM_JFR_LEAKPROFILER_CHAINS_BFSCLOSURE_HPP |
| apetushkov@9858 | 26 | #define SHARE_VM_JFR_LEAKPROFILER_CHAINS_BFSCLOSURE_HPP |
| apetushkov@9858 | 27 | |
| apetushkov@9858 | 28 | #include "memory/iterator.hpp" |
| apetushkov@9858 | 29 | #include "oops/oop.hpp" |
| apetushkov@9858 | 30 | |
| apetushkov@9858 | 31 | class BitSet; |
| apetushkov@9858 | 32 | class Edge; |
| apetushkov@9858 | 33 | class EdgeStore; |
| apetushkov@9858 | 34 | class EdgeQueue; |
| apetushkov@9858 | 35 | |
| apetushkov@9858 | 36 | // Class responsible for iterating the heap breadth-first |
| apetushkov@9858 | 37 | class BFSClosure : public ExtendedOopClosure { // XXX BasicOopIterateClosure |
| apetushkov@9858 | 38 | private: |
| apetushkov@9858 | 39 | EdgeQueue* _edge_queue; |
| apetushkov@9858 | 40 | EdgeStore* _edge_store; |
| apetushkov@9858 | 41 | BitSet* _mark_bits; |
| apetushkov@9858 | 42 | const Edge* _current_parent; |
| apetushkov@9858 | 43 | mutable size_t _current_frontier_level; |
| apetushkov@9858 | 44 | mutable size_t _next_frontier_idx; |
| apetushkov@9858 | 45 | mutable size_t _prev_frontier_idx; |
| apetushkov@9858 | 46 | size_t _dfs_fallback_idx; |
| apetushkov@9858 | 47 | bool _use_dfs; |
| apetushkov@9858 | 48 | |
| apetushkov@9858 | 49 | void log_completed_frontier() const; |
| apetushkov@9858 | 50 | void log_dfs_fallback() const; |
| apetushkov@9858 | 51 | |
| apetushkov@9858 | 52 | bool is_complete() const; |
| apetushkov@9858 | 53 | void step_frontier() const; |
| apetushkov@9858 | 54 | |
| apetushkov@9858 | 55 | void closure_impl(const oop* reference, const oop pointee); |
| apetushkov@9858 | 56 | void add_chain(const oop* reference, const oop pointee); |
| apetushkov@9858 | 57 | void dfs_fallback(); |
| apetushkov@9858 | 58 | |
| apetushkov@9858 | 59 | void iterate(const Edge* parent); |
| apetushkov@9858 | 60 | void process(const oop* reference, const oop pointee); |
| apetushkov@9858 | 61 | |
| apetushkov@9858 | 62 | void process_root_set(); |
| apetushkov@9858 | 63 | void process_queue(); |
| apetushkov@9858 | 64 | |
| apetushkov@9858 | 65 | public: |
| apetushkov@9858 | 66 | BFSClosure(EdgeQueue* edge_queue, EdgeStore* edge_store, BitSet* mark_bits); |
| apetushkov@9858 | 67 | void process(); |
| apetushkov@9858 | 68 | |
| apetushkov@9858 | 69 | virtual void do_oop(oop* ref); |
| apetushkov@9858 | 70 | virtual void do_oop(narrowOop* ref); |
| apetushkov@9858 | 71 | }; |
| apetushkov@9858 | 72 | |
| apetushkov@9858 | 73 | #endif // SHARE_VM_JFR_LEAKPROFILER_CHAINS_BFSCLOSURE_HPP |
