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comparison src/share/vm/services/memoryManager.hpp @ 1703:f6f3eef8a521

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6581734: CMS Old Gen's collection usage is zero after GC which is incorrect Summary: Management code enabled for use by a concurrent collector. Reviewed-by: mchung, ysr
author kevinw
date Fri, 30 Jul 2010 22:43:50 +0100
parents c18cbe5936b8
children f95d63e2154a
comparison
equal deleted inserted replaced
1594:b9bc732be7c0 1703:f6f3eef8a521
129 MemoryUsage after_gc_usage_for_pool(int pool_index) { 129 MemoryUsage after_gc_usage_for_pool(int pool_index) {
130 assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking"); 130 assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking");
131 return _after_gc_usage_array[pool_index]; 131 return _after_gc_usage_array[pool_index];
132 } 132 }
133 133
134 MemoryUsage* before_gc_usage_array() { return _before_gc_usage_array; }
135 MemoryUsage* after_gc_usage_array() { return _after_gc_usage_array; }
136
134 void set_index(size_t index) { _index = index; } 137 void set_index(size_t index) { _index = index; }
135 void set_start_time(jlong time) { _start_time = time; } 138 void set_start_time(jlong time) { _start_time = time; }
136 void set_end_time(jlong time) { _end_time = time; } 139 void set_end_time(jlong time) { _end_time = time; }
137 void set_before_gc_usage(int pool_index, MemoryUsage usage) { 140 void set_before_gc_usage(int pool_index, MemoryUsage usage) {
138 assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking"); 141 assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking");
141 void set_after_gc_usage(int pool_index, MemoryUsage usage) { 144 void set_after_gc_usage(int pool_index, MemoryUsage usage) {
142 assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking"); 145 assert(pool_index >= 0 && pool_index < _usage_array_size, "Range checking");
143 set_gc_usage(pool_index, usage, false /* after gc */); 146 set_gc_usage(pool_index, usage, false /* after gc */);
144 } 147 }
145 148
146 void copy_stat(GCStatInfo* stat); 149 void clear();
147 }; 150 };
148 151
149 class GCMemoryManager : public MemoryManager { 152 class GCMemoryManager : public MemoryManager {
150 private: 153 private:
151 // TODO: We should unify the GCCounter and GCMemoryManager statistic 154 // TODO: We should unify the GCCounter and GCMemoryManager statistic
152 size_t _num_collections; 155 size_t _num_collections;
153 elapsedTimer _accumulated_timer; 156 elapsedTimer _accumulated_timer;
154 elapsedTimer _gc_timer; // for measuring every GC duration 157 elapsedTimer _gc_timer; // for measuring every GC duration
155 GCStatInfo* _last_gc_stat; 158 GCStatInfo* _last_gc_stat;
159 Mutex* _last_gc_lock;
160 GCStatInfo* _current_gc_stat;
156 int _num_gc_threads; 161 int _num_gc_threads;
157 public: 162 public:
158 GCMemoryManager(); 163 GCMemoryManager();
159 ~GCMemoryManager(); 164 ~GCMemoryManager();
160 165
164 jlong gc_time_ms() { return _accumulated_timer.milliseconds(); } 169 jlong gc_time_ms() { return _accumulated_timer.milliseconds(); }
165 size_t gc_count() { return _num_collections; } 170 size_t gc_count() { return _num_collections; }
166 int num_gc_threads() { return _num_gc_threads; } 171 int num_gc_threads() { return _num_gc_threads; }
167 void set_num_gc_threads(int count) { _num_gc_threads = count; } 172 void set_num_gc_threads(int count) { _num_gc_threads = count; }
168 173
169 void gc_begin(); 174 void gc_begin(bool recordGCBeginTime, bool recordPreGCUsage,
170 void gc_end(); 175 bool recordAccumulatedGCTime);
176 void gc_end(bool recordPostGCUsage, bool recordAccumulatedGCTime,
177 bool recordGCEndTime, bool countCollection);
171 178
172 void reset_gc_stat() { _num_collections = 0; _accumulated_timer.reset(); } 179 void reset_gc_stat() { _num_collections = 0; _accumulated_timer.reset(); }
173 GCStatInfo* last_gc_stat() { return _last_gc_stat; } 180
181 // Copy out _last_gc_stat to the given destination, returning
182 // the collection count. Zero signifies no gc has taken place.
183 size_t get_last_gc_stat(GCStatInfo* dest);
174 184
175 virtual MemoryManager::Name kind() = 0; 185 virtual MemoryManager::Name kind() = 0;
176 }; 186 };
177 187
178 // These subclasses of GCMemoryManager are defined to include 188 // These subclasses of GCMemoryManager are defined to include