Mercurial > hg > graal-compiler
diff src/share/vm/gc_implementation/shared/gcTimer.hpp @ 10405:f2110083203d
8005849: JEP 167: Event-Based JVM Tracing
Reviewed-by: acorn, coleenp, sla
Contributed-by: Karen Kinnear <karen.kinnear@oracle.com>, Bengt Rutisson <bengt.rutisson@oracle.com>, Calvin Cheung <calvin.cheung@oracle.com>, Erik Gahlin <erik.gahlin@oracle.com>, Erik Helin <erik.helin@oracle.com>, Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>, Keith McGuigan <keith.mcguigan@oracle.com>, Mattias Tobiasson <mattias.tobiasson@oracle.com>, Markus Gronlund <markus.gronlund@oracle.com>, Mikael Auno <mikael.auno@oracle.com>, Nils Eliasson <nils.eliasson@oracle.com>, Nils Loodin <nils.loodin@oracle.com>, Rickard Backman <rickard.backman@oracle.com>, Staffan Larsen <staffan.larsen@oracle.com>, Stefan Karlsson <stefan.karlsson@oracle.com>, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>
author | sla |
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date | Mon, 10 Jun 2013 11:30:51 +0200 |
parents | |
children | 86e6d691f2e1 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/gc_implementation/shared/gcTimer.hpp Mon Jun 10 11:30:51 2013 +0200 @@ -0,0 +1,195 @@ +/* + * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + * + */ + +#ifndef SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTIMER_HPP +#define SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTIMER_HPP + +#include "memory/allocation.hpp" +#include "prims/jni_md.h" +#include "utilities/macros.hpp" + +class ConcurrentPhase; +class GCPhase; +class PausePhase; + +template <class E> class GrowableArray; + +class PhaseVisitor { + public: + virtual void visit(GCPhase* phase) = 0; + virtual void visit(PausePhase* phase) { visit((GCPhase*)phase); } + virtual void visit(ConcurrentPhase* phase) { visit((GCPhase*)phase); } +}; + +class GCPhase { + const char* _name; + int _level; + jlong _start; + jlong _end; + + public: + void set_name(const char* name) { _name = name; } + const char* name() { return _name; } + + int level() { return _level; } + void set_level(int level) { _level = level; } + + jlong start() { return _start; } + void set_start(jlong time) { _start = time; } + + jlong end() { return _end; } + void set_end(jlong time) { _end = time; } + + virtual void accept(PhaseVisitor* visitor) = 0; +}; + +class PausePhase : public GCPhase { + public: + void accept(PhaseVisitor* visitor) { + visitor->visit(this); + } +}; + +class ConcurrentPhase : public GCPhase { + void accept(PhaseVisitor* visitor) { + visitor->visit(this); + } +}; + +class PhasesStack { + public: + // FIXME: Temporary set to 5 (used to be 4), since Reference processing needs it. + static const int PHASE_LEVELS = 5; + + private: + int _phase_indices[PHASE_LEVELS]; + int _next_phase_level; + + public: + PhasesStack() { clear(); } + void clear(); + + void push(int phase_index); + int pop(); + int count() const; +}; + +class TimePartitions { + static const int INITIAL_CAPACITY = 10; + + // Currently we only support pause phases. + GrowableArray<PausePhase>* _phases; + PhasesStack _active_phases; + + jlong _sum_of_pauses; + jlong _longest_pause; + + public: + TimePartitions(); + ~TimePartitions(); + void clear(); + + void report_gc_phase_start(const char* name, jlong time); + void report_gc_phase_end(jlong time); + + int num_phases() const; + GCPhase* phase_at(int index) const; + + jlong sum_of_pauses(); + jlong longest_pause(); + + bool has_active_phases(); + private: + void update_statistics(GCPhase* phase); +}; + +class PhasesIterator { + public: + virtual bool has_next() = 0; + virtual GCPhase* next() = 0; +}; + +class GCTimer : public ResourceObj { + NOT_PRODUCT(friend class GCTimerTest;) + protected: + jlong _gc_start; + jlong _gc_end; + TimePartitions _time_partitions; + + public: + virtual void register_gc_start(jlong time); + virtual void register_gc_end(jlong time); + + void register_gc_phase_start(const char* name, jlong time); + void register_gc_phase_end(jlong time); + + jlong gc_start() { return _gc_start; } + jlong gc_end() { return _gc_end; } + + TimePartitions* time_partitions() { return &_time_partitions; } + + long longest_pause(); + long sum_of_pauses(); + + protected: + void register_gc_pause_start(const char* name, jlong time); + void register_gc_pause_end(jlong time); +}; + +class STWGCTimer : public GCTimer { + public: + virtual void register_gc_start(jlong time); + virtual void register_gc_end(jlong time); +}; + +class ConcurrentGCTimer : public GCTimer { + public: + void register_gc_pause_start(const char* name, jlong time); + void register_gc_pause_end(jlong time); +}; + +class TimePartitionPhasesIterator { + TimePartitions* _time_partitions; + int _next; + + public: + TimePartitionPhasesIterator(TimePartitions* time_partitions) : _time_partitions(time_partitions), _next(0) { } + + virtual bool has_next(); + virtual GCPhase* next(); +}; + + +/////////////// Unit tests /////////////// + +#ifndef PRODUCT + +class GCTimerAllTest { + public: + static void all(); +}; + +#endif + +#endif // SHARE_VM_GC_IMPLEMENTATION_SHARED_GCTIMER_HPP