Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/aprofiler.hpp @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
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| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | 37f87013dfd8 |
| children | f95d63e2154a |
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| 0 | 1 /* |
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2 * Copyright (c) 1997, 2003, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 // A simple allocation profiler for Java. The profiler collects and prints | |
| 26 // the number and total size of instances allocated per class, including | |
| 27 // array classes. | |
| 28 // | |
| 29 // The profiler is currently global for all threads. It can be changed to a | |
| 30 // per threads profiler by keeping a more elaborate data structure and calling | |
| 31 // iterate_since_last_scavenge at thread switches. | |
| 32 | |
| 33 | |
| 34 class AllocationProfiler: AllStatic { | |
| 35 friend class GenCollectedHeap; | |
| 342 | 36 friend class G1CollectedHeap; |
| 0 | 37 friend class MarkSweep; |
| 38 private: | |
| 39 static bool _active; // tells whether profiler is active | |
| 40 static GrowableArray<klassOop>* _print_array; // temporary array for printing | |
| 41 | |
| 42 // Utility printing functions | |
| 43 static void add_class_to_array(klassOop k); | |
| 44 static void add_classes_to_array(klassOop k); | |
| 45 static int compare_classes(klassOop* k1, klassOop* k2); | |
| 46 static int average(size_t alloc_size, int alloc_count); | |
| 47 static void sort_and_print_array(size_t cutoff); | |
| 48 | |
| 49 // Call for collecting allocation information. Called at scavenge, mark-sweep and disengage. | |
| 50 static void iterate_since_last_gc(); | |
| 51 | |
| 52 public: | |
| 53 // Start profiler | |
| 54 static void engage(); | |
| 55 // Stop profiler | |
| 56 static void disengage(); | |
| 57 // Tells whether profiler is active | |
| 58 static bool is_active() { return _active; } | |
| 59 // Print profile | |
| 60 static void print(size_t cutoff); // Cutoff in total allocation size (in words) | |
| 61 }; |