src/share/vm/jfr/leakprofiler/utilities/vmOperation.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_UTILITIES_VMOPERATION_HPP
ddong@9885 26 #define SHARE_JFR_LEAKPROFILER_UTILITIES_VMOPERATION_HPP
ddong@9885 27
ddong@9885 28 #include "runtime/vm_operations.hpp"
ddong@9885 29
ddong@9885 30 class OldObjectVMOperation : public VM_Operation {
ddong@9885 31 public:
ddong@9885 32 Mode evaluation_mode() const {
ddong@9885 33 return _safepoint;
ddong@9885 34 }
ddong@9885 35
ddong@9885 36 VMOp_Type type() const {
ddong@9885 37 return VMOp_JFROldObject;
ddong@9885 38 }
ddong@9885 39 };
ddong@9885 40
ddong@9885 41 #endif // SHARE_JFR_LEAKPROFILER_UTILITIES_VMOPERATION_HPP

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