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comparison src/share/vm/runtime/sweeper.hpp @ 13400:86e6d691f2e1

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8028128: Add a type safe alternative for working with counter based data Reviewed-by: dholmes, egahlin
author mgronlun
date Sat, 23 Nov 2013 12:25:13 +0100
parents 78da3894b86f
children 49a31fd8b93d
comparison
equal deleted inserted replaced
13399:260ac69dc096 13400:86e6d691f2e1
23 */ 23 */
24 24
25 #ifndef SHARE_VM_RUNTIME_SWEEPER_HPP 25 #ifndef SHARE_VM_RUNTIME_SWEEPER_HPP
26 #define SHARE_VM_RUNTIME_SWEEPER_HPP 26 #define SHARE_VM_RUNTIME_SWEEPER_HPP
27 27
28 #include "utilities/ticks.hpp"
28 // An NmethodSweeper is an incremental cleaner for: 29 // An NmethodSweeper is an incremental cleaner for:
29 // - cleanup inline caches 30 // - cleanup inline caches
30 // - reclamation of nmethods 31 // - reclamation of nmethods
31 // Removing nmethods from the code cache includes two operations 32 // Removing nmethods from the code cache includes two operations
32 // 1) mark active nmethods 33 // 1) mark active nmethods
69 // 1) alive -> not_entrant 70 // 1) alive -> not_entrant
70 // 2) not_entrant -> zombie 71 // 2) not_entrant -> zombie
71 // 3) zombie -> marked_for_reclamation 72 // 3) zombie -> marked_for_reclamation
72 // Stat counters 73 // Stat counters
73 static int _total_nof_methods_reclaimed; // Accumulated nof methods flushed 74 static int _total_nof_methods_reclaimed; // Accumulated nof methods flushed
74 static jlong _total_time_sweeping; // Accumulated time sweeping 75 static Tickspan _total_time_sweeping; // Accumulated time sweeping
75 static jlong _total_time_this_sweep; // Total time this sweep 76 static Tickspan _total_time_this_sweep; // Total time this sweep
76 static jlong _peak_sweep_time; // Peak time for a full sweep 77 static Tickspan _peak_sweep_time; // Peak time for a full sweep
77 static jlong _peak_sweep_fraction_time; // Peak time sweeping one fraction 78 static Tickspan _peak_sweep_fraction_time; // Peak time sweeping one fraction
78 79
79 static int process_nmethod(nmethod *nm); 80 static int process_nmethod(nmethod *nm);
80 static void release_nmethod(nmethod* nm); 81 static void release_nmethod(nmethod* nm);
81 82
82 static bool sweep_in_progress(); 83 static bool sweep_in_progress();
85 static int _hotness_counter_reset_val; 86 static int _hotness_counter_reset_val;
86 87
87 public: 88 public:
88 static long traversal_count() { return _traversals; } 89 static long traversal_count() { return _traversals; }
89 static int total_nof_methods_reclaimed() { return _total_nof_methods_reclaimed; } 90 static int total_nof_methods_reclaimed() { return _total_nof_methods_reclaimed; }
90 static jlong total_time_sweeping() { return _total_time_sweeping; } 91 static const Tickspan total_time_sweeping() { return _total_time_sweeping; }
91 static jlong peak_sweep_time() { return _peak_sweep_time; } 92 static const Tickspan peak_sweep_time() { return _peak_sweep_time; }
92 static jlong peak_sweep_fraction_time() { return _peak_sweep_fraction_time; } 93 static const Tickspan peak_sweep_fraction_time() { return _peak_sweep_fraction_time; }
93 static void log_sweep(const char* msg, const char* format = NULL, ...); 94 static void log_sweep(const char* msg, const char* format = NULL, ...);
94 95
95 96
96 #ifdef ASSERT 97 #ifdef ASSERT
97 static bool is_sweeping(nmethod* which) { return _current == which; } 98 static bool is_sweeping(nmethod* which) { return _current == which; }