0N/A/*
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0N/A
1879N/A#ifndef SHARE_VM_RUNTIME_APROFILER_HPP
1879N/A#define SHARE_VM_RUNTIME_APROFILER_HPP
1879N/A
1879N/A#include "memory/allocation.hpp"
1879N/A#include "memory/universe.hpp"
1879N/A#include "oops/klass.hpp"
1879N/A#include "oops/klassOop.hpp"
1879N/A#include "utilities/top.hpp"
1879N/A
0N/A// A simple allocation profiler for Java. The profiler collects and prints
0N/A// the number and total size of instances allocated per class, including
0N/A// array classes.
0N/A//
0N/A// The profiler is currently global for all threads. It can be changed to a
0N/A// per threads profiler by keeping a more elaborate data structure and calling
0N/A// iterate_since_last_scavenge at thread switches.
0N/A
0N/A
0N/Aclass AllocationProfiler: AllStatic {
0N/A friend class GenCollectedHeap;
342N/A friend class G1CollectedHeap;
0N/A friend class MarkSweep;
0N/A private:
0N/A static bool _active; // tells whether profiler is active
0N/A static GrowableArray<klassOop>* _print_array; // temporary array for printing
0N/A
0N/A // Utility printing functions
0N/A static void add_class_to_array(klassOop k);
0N/A static void add_classes_to_array(klassOop k);
0N/A static int compare_classes(klassOop* k1, klassOop* k2);
0N/A static int average(size_t alloc_size, int alloc_count);
0N/A static void sort_and_print_array(size_t cutoff);
0N/A
0N/A // Call for collecting allocation information. Called at scavenge, mark-sweep and disengage.
0N/A static void iterate_since_last_gc();
0N/A
0N/A public:
0N/A // Start profiler
0N/A static void engage();
0N/A // Stop profiler
0N/A static void disengage();
0N/A // Tells whether profiler is active
0N/A static bool is_active() { return _active; }
0N/A // Print profile
0N/A static void print(size_t cutoff); // Cutoff in total allocation size (in words)
0N/A};
1879N/A
1879N/A#endif // SHARE_VM_RUNTIME_APROFILER_HPP