author | egahlin |
Fri, 17 May 2019 16:02:27 +0200 | |
branch | JEP-349-branch |
changeset 57360 | 5d043a159d5c |
parent 53244 | 9807daeb47c4 |
child 57870 | 00860d9caf4d |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#ifndef SHARE_JFR_RECORDER_STACKTRACE_JFRSTACKTRACEREPOSITORY_HPP |
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#define SHARE_JFR_RECORDER_STACKTRACE_JFRSTACKTRACEREPOSITORY_HPP |
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#include "jfr/utilities/jfrAllocation.hpp" |
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#include "jfr/utilities/jfrTypes.hpp" |
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class frame; |
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class JavaThread; |
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class JfrCheckpointWriter; |
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class JfrChunkWriter; |
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class Method; |
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class JfrStackFrame { |
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private: |
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const Method* _method; |
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traceid _methodid; |
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int _line; |
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int _bci; |
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u1 _type; |
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public: |
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enum { |
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FRAME_INTERPRETER = 0, |
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FRAME_JIT, |
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FRAME_INLINE, |
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FRAME_NATIVE, |
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NUM_FRAME_TYPES |
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}; |
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JfrStackFrame(const traceid& id, int bci, int type, const Method* method) : |
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_method(method), _methodid(id), _line(0), _bci(bci), _type(type) {} |
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JfrStackFrame(const Method* method, const traceid& id, int bci, int type, int lineno) : |
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_method(method), _methodid(id), _line(lineno), _bci(bci), _type(type) {} |
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bool equals(const JfrStackFrame& rhs) const; |
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void write(JfrChunkWriter& cw) const; |
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void write(JfrCheckpointWriter& cpw) const; |
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void resolve_lineno(); |
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}; |
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class JfrStackTrace : public StackObj { |
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friend class JfrStackTraceRepository; |
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private: |
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JfrStackFrame* _frames; |
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traceid _id; |
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u4 _nr_of_frames; |
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unsigned int _hash; |
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const u4 _max_frames; |
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bool _reached_root; |
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bool _lineno; |
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public: |
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JfrStackTrace(JfrStackFrame* frames, u4 max_frames) : _frames(frames), |
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_id(0), |
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_nr_of_frames(0), |
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_hash(0), |
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_max_frames(max_frames), |
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_reached_root(false), |
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_lineno(false) {} |
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bool record_thread(JavaThread& thread, frame& frame); |
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bool record_safe(JavaThread* thread, int skip, bool leakp = false); |
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void resolve_linenos(); |
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void set_nr_of_frames(u4 nr_of_frames) { _nr_of_frames = nr_of_frames; } |
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void set_hash(unsigned int hash) { _hash = hash; } |
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void set_frame(u4 frame_pos, JfrStackFrame& frame); |
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void set_reached_root(bool reached_root) { _reached_root = reached_root; } |
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bool full_stacktrace() const { return _reached_root; } |
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bool have_lineno() const { return _lineno; } |
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}; |
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class JfrStackTraceRepository : public JfrCHeapObj { |
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friend class JfrRecorder; |
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friend class JfrRecorderService; |
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friend class ObjectSampler; |
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friend class WriteObjectSampleStacktrace; |
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class StackTrace : public JfrCHeapObj { |
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friend class JfrStackTrace; |
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friend class JfrStackTraceRepository; |
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private: |
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StackTrace* _next; |
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JfrStackFrame* _frames; |
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const traceid _id; |
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u4 _nr_of_frames; |
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unsigned int _hash; |
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bool _reached_root; |
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mutable bool _written; |
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unsigned int hash() const { return _hash; } |
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bool should_write() const { return !_written; } |
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public: |
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StackTrace(traceid id, const JfrStackTrace& trace, StackTrace* next); |
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~StackTrace(); |
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traceid id() const { return _id; } |
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StackTrace* next() const { return _next; } |
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void write(JfrChunkWriter& cw) const; |
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void write(JfrCheckpointWriter& cpw) const; |
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bool equals(const JfrStackTrace& rhs) const; |
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}; |
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private: |
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static const u4 TABLE_SIZE = 2053; |
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StackTrace* _table[TABLE_SIZE]; |
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traceid _next_id; |
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u4 _entries; |
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size_t write_impl(JfrChunkWriter& cw, bool clear); |
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traceid record_for(JavaThread* thread, int skip, JfrStackFrame* frames, u4 max_frames); |
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traceid record_for(JavaThread* thread, int skip, JfrStackFrame* frames, u4 max_frames, unsigned int* hash); |
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traceid add_trace(const JfrStackTrace& stacktrace); |
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const StackTrace* resolve_entry(unsigned int hash, traceid id) const; |
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static void write_metadata(JfrCheckpointWriter& cpw); |
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JfrStackTraceRepository(); |
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static JfrStackTraceRepository& instance(); |
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public: |
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static JfrStackTraceRepository* create(); |
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bool initialize(); |
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static void destroy(); |
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static traceid add(const JfrStackTrace& stacktrace); |
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static traceid record(Thread* thread, int skip = 0); |
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static traceid record(Thread* thread, int skip, unsigned int* hash); |
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traceid write(JfrCheckpointWriter& cpw, traceid id, unsigned int hash); |
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size_t write(JfrChunkWriter& cw, bool clear); |
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size_t clear(); |
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}; |
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#endif // SHARE_JFR_RECORDER_STACKTRACE_JFRSTACKTRACEREPOSITORY_HPP |