src/share/vm/jfr/leakprofiler/leakProfiler.hpp

Wed, 09 Oct 2019 16:11:58 +0800

author
ddong
date
Wed, 09 Oct 2019 16:11:58 +0800
changeset 9885
8e875c964f41
parent 9858
b985cbb00e68
permissions
-rw-r--r--

8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
Reviewed-by: egahlin, rwestberg

     1 /*
     2  * Copyright (c) 2014, 2018, 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_JFR_LEAKPROFILER_LEAKPROFILER_HPP
    26 #define SHARE_VM_JFR_LEAKPROFILER_LEAKPROFILER_HPP
    28 #include "memory/allocation.hpp"
    30 class BoolObjectClosure;
    31 class OopClosure;
    33 class LeakProfiler : public AllStatic {
    34  public:
    35   static bool start(int sample_count);
    36   static bool stop();
    37   static bool is_running();
    39   static void emit_events(int64_t cutoff_ticks, bool emit_all);
    40   static void sample(HeapWord* object, size_t size, JavaThread* thread);
    42   // Called by GC
    43   static void oops_do(BoolObjectClosure* is_alive, OopClosure* f);
    44 };
    46 #endif // SHARE_VM_JFR_LEAKPROFILER_LEAKPROFILER_HPP

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