jdk8-mips64-public/hotspot: src/share/vm/jfr/recorder/jfrRecorder.hpp@1258121876f8

8227011: Starting a JFR recording in response to JVMTI VMInit and / or Java agent premain corrupts memory
Reviewed-by: egahlin, rwestberg

     1 /*

     2  * Copyright (c) 2012, 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_RECORDER_JFRRECORDER_HPP

    26 #define SHARE_VM_JFR_RECORDER_JFRRECORDER_HPP

    28 #include "jfr/utilities/jfrAllocation.hpp"

    30 class JavaThread;

    31 class Thread;

    33 //

    34 // Represents the singleton instance of Flight Recorder.

    35 // Lifecycle management of recorder components.

    36 //

    37 class JfrRecorder : public JfrCHeapObj {

    38   friend class Jfr;

    39   friend void recorderthread_entry(JavaThread*, Thread*);

    40  private:

    41   static bool _shutting_down;

    43   static bool create_checkpoint_manager();

    44   static bool create_chunk_repository();

    45   static bool create_java_event_writer();

    46   static bool create_jvmti_agent();

    47   static bool create_os_interface();

    48   static bool create_post_box();

    49   static bool create_recorder_thread();

    50   static bool create_stacktrace_repository();

    51   static bool create_storage();

    52   static bool create_stringpool();

    53   static bool create_thread_sampling();

    54   static bool create_components();

    55   static void destroy_components();

    56   static void on_recorder_thread_exit();

    57   static bool on_vm_start();

    58   static bool on_vm_init();

    60  public:

    61   static bool is_enabled();

    62   static bool is_disabled();

    63   static bool create(bool simulate_failure);

    64   static bool is_created();

    65   static void destroy();

    66   static void start_recording();

    67   static bool is_recording();

    68   static void stop_recording();

    69   static bool is_shutting_down() { return _shutting_down; }

    70   static void set_is_shutting_down() { _shutting_down = true; }

    71 };

    73 #endif // SHARE_VM_JFR_RECORDER_JFRRECORDER_HPP

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