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src/share/vm/jfr/leakprofiler/chains/pathToGcRootsOperation.hpp@8e875c964f41 (annotated)
src/share/vm/jfr/leakprofiler/chains/pathToGcRootsOperation.hpp
Wed, 09 Oct 2019 16:11:58 +0800
- author
- ddong
- date
- Wed, 09 Oct 2019 16:11:58 +0800
- changeset 9885
- 8e875c964f41
- permissions
- -rw-r--r--
8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
Reviewed-by: egahlin, rwestberg
| ddong@9885 | 1 | /* |
| ddong@9885 | 2 | * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. |
| ddong@9885 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| ddong@9885 | 4 | * |
| ddong@9885 | 5 | * This code is free software; you can redistribute it and/or modify it |
| ddong@9885 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| ddong@9885 | 7 | * published by the Free Software Foundation. |
| ddong@9885 | 8 | * |
| ddong@9885 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| ddong@9885 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| ddong@9885 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| ddong@9885 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| ddong@9885 | 13 | * accompanied this code). |
| ddong@9885 | 14 | * |
| ddong@9885 | 15 | * You should have received a copy of the GNU General Public License version |
| ddong@9885 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| ddong@9885 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| ddong@9885 | 18 | * |
| ddong@9885 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| ddong@9885 | 20 | * or visit www.oracle.com if you need additional information or have any |
| ddong@9885 | 21 | * questions. |
| ddong@9885 | 22 | * |
| ddong@9885 | 23 | */ |
| ddong@9885 | 24 | |
| ddong@9885 | 25 | #ifndef SHARE_JFR_LEAKPROFILER_CHAINS_PATHTOGCROOTSOPERATION_HPP |
| ddong@9885 | 26 | #define SHARE_JFR_LEAKPROFILER_CHAINS_PATHTOGCROOTSOPERATION_HPP |
| ddong@9885 | 27 | |
| ddong@9885 | 28 | #include "jfr/leakprofiler/utilities/vmOperation.hpp" |
| ddong@9885 | 29 | |
| ddong@9885 | 30 | class EdgeStore; |
| ddong@9885 | 31 | class ObjectSampler; |
| ddong@9885 | 32 | |
| ddong@9885 | 33 | // Safepoint operation for finding paths to gc roots |
| ddong@9885 | 34 | class PathToGcRootsOperation : public OldObjectVMOperation { |
| ddong@9885 | 35 | private: |
| ddong@9885 | 36 | ObjectSampler* _sampler; |
| ddong@9885 | 37 | EdgeStore* const _edge_store; |
| ddong@9885 | 38 | const int64_t _cutoff_ticks; |
| ddong@9885 | 39 | const bool _emit_all; |
| ddong@9885 | 40 | |
| ddong@9885 | 41 | public: |
| ddong@9885 | 42 | PathToGcRootsOperation(ObjectSampler* sampler, EdgeStore* edge_store, int64_t cutoff, bool emit_all); |
| ddong@9885 | 43 | virtual void doit(); |
| ddong@9885 | 44 | }; |
| ddong@9885 | 45 | |
| ddong@9885 | 46 | #endif // SHARE_JFR_LEAKPROFILER_CHAINS_PATHTOGCROOTSOPERATION_HPP |
