1 /*

     2  * Copyright (c) 2011, 2019, 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 #ifndef SHARE_JFR_RECORDER_STACKTRACE_JFRSTACKTRACE_HPP

    26 #define SHARE_JFR_RECORDER_STACKTRACE_JFRSTACKTRACE_HPP

    27 

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

    29 #include "jfr/utilities/jfrTypes.hpp"

    30 

    31 class frame;

    32 class InstanceKlass;

    33 class JavaThread;

    34 class JfrCheckpointWriter;

    35 class JfrChunkWriter;

    36 class Method;

    37 

    38 class JfrStackFrame {

    39   friend class ObjectSampleCheckpoint;

    40  private:

    41   mutable InstanceKlass* _klass;

    42   traceid _methodid;

    43   mutable int _line;

    44   int _bci;

    45   u1 _type;

    46 

    47  public:

    48   JfrStackFrame(const traceid& id, int bci, int type, InstanceKlass* klass);

    49   JfrStackFrame(const traceid& id, int bci, int type, int lineno);

    50 

    51   bool equals(const JfrStackFrame& rhs) const;

    52   void write(JfrChunkWriter& cw) const;

    53   void write(JfrCheckpointWriter& cpw) const;

    54   void resolve_lineno() const;

    55 

    56   enum {

    57     FRAME_INTERPRETER = 0,

    58     FRAME_JIT,

    59     FRAME_INLINE,

    60     FRAME_NATIVE,

    61     NUM_FRAME_TYPES

    62   };

    63 };

    64 

    65 class JfrStackTrace : public JfrCHeapObj {

    66   friend class JfrNativeSamplerCallback;

    67   friend class JfrStackTraceRepository;

    68   friend class ObjectSampleCheckpoint;

    69   friend class ObjectSampler;

    70   friend class OSThreadSampler;

    71   friend class ProcessStackTrace;

    72   friend class StackTraceInstall;

    73   friend class StackTraceWrite;

    74 

    75  private:

    76   const JfrStackTrace* _next;

    77   JfrStackFrame* _frames;

    78   traceid _id;

    79   unsigned int _hash;

    80   u4 _nr_of_frames;

    81   u4 _max_frames;

    82   bool _frames_ownership;

    83   bool _reached_root;

    84   mutable bool _lineno;

    85   mutable bool _written;

    86 

    87   const JfrStackTrace* next() const { return _next; }

    88 

    89   bool should_write() const { return !_written; }

    90   void write(JfrChunkWriter& cw) const;

    91   void write(JfrCheckpointWriter& cpw) const;

    92   bool equals(const JfrStackTrace& rhs) const;

    93 

    94   void set_id(traceid id) { _id = id; }

    95   void set_nr_of_frames(u4 nr_of_frames) { _nr_of_frames = nr_of_frames; }

    96   void set_hash(unsigned int hash) { _hash = hash; }

    97   void set_reached_root(bool reached_root) { _reached_root = reached_root; }

    98   void resolve_linenos() const;

    99 

   100   bool record_thread(JavaThread& thread, frame& frame);

   101   bool record_safe(JavaThread* thread, int skip);

   102 

   103   bool have_lineno() const { return _lineno; }

   104   bool full_stacktrace() const { return _reached_root; }

   105 

   106   JfrStackTrace(traceid id, const JfrStackTrace& trace, const JfrStackTrace* next);

   107   void operator=(const JfrStackTrace& trace);

   108 

   109  public:

   110   JfrStackTrace(JfrStackFrame* frames, u4 max_frames);

   111   ~JfrStackTrace();

   112   unsigned int hash() const { return _hash; }

   113   traceid id() const { return _id; }

   114   u4 number_of_frames() const { return _nr_of_frames; }

   115 };

   116 

   117 #endif // SHARE_JFR_RECORDER_STACKTRACE_JFRSTACKTRACE_HPP