1 /*

     2  * Copyright (c) 2011, 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  */

    24 

    25 #include "precompiled.hpp"

    26 #include "jfr/recorder/jfrEventSetting.inline.hpp"

    27 #include "jfr/recorder/stacktrace/jfrStackTraceRepository.hpp"

    28 #include "jfr/support/jfrStackTraceMark.hpp"

    29 #include "jfr/support/jfrThreadLocal.hpp"

    30 #include "runtime/thread.inline.hpp"

    31 

    32 JfrStackTraceMark::JfrStackTraceMark() : _t(Thread::current()), _previous_id(0), _previous_hash(0) {

    33   JfrThreadLocal* const tl = _t->jfr_thread_local();

    34   if (tl->has_cached_stack_trace()) {

    35     _previous_id = tl->cached_stack_trace_id();

    36     _previous_hash = tl->cached_stack_trace_hash();

    37   }

    38   tl->set_cached_stack_trace_id(JfrStackTraceRepository::record(Thread::current()));

    39 }

    40 

    41 JfrStackTraceMark::JfrStackTraceMark(Thread* t) : _t(t), _previous_id(0), _previous_hash(0) {

    42   JfrThreadLocal* const tl = _t->jfr_thread_local();

    43   if (tl->has_cached_stack_trace()) {

    44     _previous_id = tl->cached_stack_trace_id();

    45     _previous_hash = tl->cached_stack_trace_hash();

    46   }

    47   tl->set_cached_stack_trace_id(JfrStackTraceRepository::record(t));

    48 }

    49 

    50 JfrStackTraceMark::JfrStackTraceMark(JfrEventId eventId) : _t(NULL), _previous_id(0), _previous_hash(0) {

    51   if (JfrEventSetting::has_stacktrace(eventId)) {

    52     _t = Thread::current();

    53     JfrThreadLocal* const tl = _t->jfr_thread_local();

    54     if (tl->has_cached_stack_trace()) {

    55       _previous_id = tl->cached_stack_trace_id();

    56       _previous_hash = tl->cached_stack_trace_hash();

    57     }

    58     tl->set_cached_stack_trace_id(JfrStackTraceRepository::record(_t));

    59   }

    60 }

    61 

    62 JfrStackTraceMark::JfrStackTraceMark(JfrEventId eventId, Thread* t) : _t(NULL), _previous_id(0), _previous_hash(0) {

    63   if (JfrEventSetting::has_stacktrace(eventId)) {

    64     _t = t;

    65     JfrThreadLocal* const tl = _t->jfr_thread_local();

    66     if (tl->has_cached_stack_trace()) {

    67       _previous_id = tl->cached_stack_trace_id();

    68       _previous_hash = tl->cached_stack_trace_hash();

    69     }

    70     tl->set_cached_stack_trace_id(JfrStackTraceRepository::record(_t));

    71   }

    72 }

    73 

    74 JfrStackTraceMark::~JfrStackTraceMark() {

    75   if (_previous_id != 0) {

    76     _t->jfr_thread_local()->set_cached_stack_trace_id(_previous_id, _previous_hash);

    77   } else {

    78     if (_t != NULL) {

    79       _t->jfr_thread_local()->clear_cached_stack_trace();

    80     }

    81   }

    82 }