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comparison src/share/vm/runtime/sweeper.hpp @ 10405:f2110083203d

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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
date Mon, 10 Jun 2013 11:30:51 +0200
parents 0cfa93c2fcc4
children 5888334c9c24
comparison
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10404:d0add7016434 10405:f2110083203d
1 /* 1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 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 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
29 // - cleanup inline caches 29 // - cleanup inline caches
30 // - reclamation of unreferences zombie nmethods 30 // - reclamation of unreferences zombie nmethods
31 // 31 //
32 32
33 class NMethodSweeper : public AllStatic { 33 class NMethodSweeper : public AllStatic {
34 static long _traversals; // Stack traversal count 34 static long _traversals; // Stack scan count, also sweep ID.
35 static nmethod* _current; // Current nmethod 35 static nmethod* _current; // Current nmethod
36 static int _seen; // Nof. nmethod we have currently processed in current pass of CodeCache 36 static int _seen; // Nof. nmethod we have currently processed in current pass of CodeCache
37 static int _flushed_count; // Nof. nmethods flushed in current sweep
38 static int _zombified_count; // Nof. nmethods made zombie in current sweep
39 static int _marked_count; // Nof. nmethods marked for reclaim in current sweep
37 40
38 static volatile int _invocations; // No. of invocations left until we are completed with this pass 41 static volatile int _invocations; // No. of invocations left until we are completed with this pass
39 static volatile int _sweep_started; // Flag to control conc sweeper 42 static volatile int _sweep_started; // Flag to control conc sweeper
40 43
41 //The following are reset in scan_stacks and synchronized by the safepoint 44 //The following are reset in scan_stacks and synchronized by the safepoint
51 54
52 // These are synchronized by the _sweep_started token 55 // These are synchronized by the _sweep_started token
53 static int _highest_marked; // highest compile id dumped at last emergency unloading 56 static int _highest_marked; // highest compile id dumped at last emergency unloading
54 static int _dead_compile_ids; // number of compile ids that where not in the cache last flush 57 static int _dead_compile_ids; // number of compile ids that where not in the cache last flush
55 58
59 // Stat counters
60 static int _number_of_flushes; // Total of full traversals caused by full cache
61 static int _total_nof_methods_reclaimed; // Accumulated nof methods flushed
62 static jlong _total_time_sweeping; // Accumulated time sweeping
63 static jlong _total_time_this_sweep; // Total time this sweep
64 static jlong _peak_sweep_time; // Peak time for a full sweep
65 static jlong _peak_sweep_fraction_time; // Peak time sweeping one fraction
66 static jlong _total_disconnect_time; // Total time cleaning code mem
67 static jlong _peak_disconnect_time; // Peak time cleaning code mem
68
56 static void process_nmethod(nmethod *nm); 69 static void process_nmethod(nmethod *nm);
57 static void release_nmethod(nmethod* nm); 70 static void release_nmethod(nmethod* nm);
58 71
59 static void log_sweep(const char* msg, const char* format = NULL, ...); 72 static void log_sweep(const char* msg, const char* format = NULL, ...);
60 static bool sweep_in_progress(); 73 static bool sweep_in_progress();
61 74
62 public: 75 public:
63 static long traversal_count() { return _traversals; } 76 static long traversal_count() { return _traversals; }
77 static int number_of_flushes() { return _number_of_flushes; }
78 static int total_nof_methods_reclaimed() { return _total_nof_methods_reclaimed; }
79 static jlong total_time_sweeping() { return _total_time_sweeping; }
80 static jlong peak_sweep_time() { return _peak_sweep_time; }
81 static jlong peak_sweep_fraction_time() { return _peak_sweep_fraction_time; }
82 static jlong total_disconnect_time() { return _total_disconnect_time; }
83 static jlong peak_disconnect_time() { return _peak_disconnect_time; }
64 84
65 #ifdef ASSERT 85 #ifdef ASSERT
66 // Keep track of sweeper activity in the ring buffer 86 // Keep track of sweeper activity in the ring buffer
67 static void record_sweep(nmethod* nm, int line); 87 static void record_sweep(nmethod* nm, int line);
68 static void report_events(int id, address entry); 88 static void report_events(int id, address entry);