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6581734: CMS Old Gen's collection usage is zero after GC which is incorrect

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Management code enabled for use by a concurrent collector.

Reviewed-by: mchung, ysr
This commit is contained in:
Kevin Walls 2010-07-30 22:43:50 +01:00
parent 428d02d5d7
commit 5fb46fd5a8
9 changed files with 435 additions and 79 deletions
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18
hotspot/src/share/vm/services/memoryManager.hpp
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@ -131,6 +131,9 @@ public:
return _after_gc_usage_array[pool_index];
}
MemoryUsage* before_gc_usage_array() { return _before_gc_usage_array; }
MemoryUsage* after_gc_usage_array() { return _after_gc_usage_array; }
void set_index(size_t index) { _index = index; }
void set_start_time(jlong time) { _start_time = time; }
void set_end_time(jlong time) { _end_time = time; }
@ -143,7 +146,7 @@ public:
set_gc_usage(pool_index, usage, false /* after gc */);
}
void copy_stat(GCStatInfo* stat);
void clear();
};
class GCMemoryManager : public MemoryManager {
@ -153,6 +156,8 @@ private:
elapsedTimer _accumulated_timer;
elapsedTimer _gc_timer; // for measuring every GC duration
GCStatInfo* _last_gc_stat;
Mutex* _last_gc_lock;
GCStatInfo* _current_gc_stat;
int _num_gc_threads;
public:
GCMemoryManager();
@ -166,11 +171,16 @@ public:
int num_gc_threads() { return _num_gc_threads; }
void set_num_gc_threads(int count) { _num_gc_threads = count; }
void gc_begin();
void gc_end();
void gc_begin(bool recordGCBeginTime, bool recordPreGCUsage,
bool recordAccumulatedGCTime);
void gc_end(bool recordPostGCUsage, bool recordAccumulatedGCTime,
bool recordGCEndTime, bool countCollection);
void reset_gc_stat() { _num_collections = 0; _accumulated_timer.reset(); }
GCStatInfo* last_gc_stat() { return _last_gc_stat; }
// Copy out _last_gc_stat to the given destination, returning
// the collection count. Zero signifies no gc has taken place.
size_t get_last_gc_stat(GCStatInfo* dest);
virtual MemoryManager::Name kind() = 0;
};