Mercurial > hg > graal-compiler
view src/share/vm/runtime/aprofiler.hpp @ 974:26b774d693aa
Merge
author | acorn |
---|---|
date | Wed, 16 Sep 2009 09:10:57 -0400 |
parents | 37f87013dfd8 |
children | c18cbe5936b8 |
line wrap: on
line source
/* * Copyright 1997-2003 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ // A simple allocation profiler for Java. The profiler collects and prints // the number and total size of instances allocated per class, including // array classes. // // The profiler is currently global for all threads. It can be changed to a // per threads profiler by keeping a more elaborate data structure and calling // iterate_since_last_scavenge at thread switches. class AllocationProfiler: AllStatic { friend class GenCollectedHeap; friend class G1CollectedHeap; friend class MarkSweep; private: static bool _active; // tells whether profiler is active static GrowableArray<klassOop>* _print_array; // temporary array for printing // Utility printing functions static void add_class_to_array(klassOop k); static void add_classes_to_array(klassOop k); static int compare_classes(klassOop* k1, klassOop* k2); static int average(size_t alloc_size, int alloc_count); static void sort_and_print_array(size_t cutoff); // Call for collecting allocation information. Called at scavenge, mark-sweep and disengage. static void iterate_since_last_gc(); public: // Start profiler static void engage(); // Stop profiler static void disengage(); // Tells whether profiler is active static bool is_active() { return _active; } // Print profile static void print(size_t cutoff); // Cutoff in total allocation size (in words) };