Mercurial > hg > truffle
annotate src/share/vm/runtime/aprofiler.hpp @ 7090:05ce1defa4f9
Common out some parts of UnsafeLoad/Store in UnsafeAccess
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Thu, 29 Nov 2012 13:24:08 +0100 |
parents | da91efe96a93 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2012, 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 | |
1972 | 25 #ifndef SHARE_VM_RUNTIME_APROFILER_HPP |
26 #define SHARE_VM_RUNTIME_APROFILER_HPP | |
27 | |
28 #include "memory/allocation.hpp" | |
29 #include "memory/universe.hpp" | |
30 #include "oops/klass.hpp" | |
31 #include "utilities/top.hpp" | |
32 | |
0 | 33 // A simple allocation profiler for Java. The profiler collects and prints |
34 // the number and total size of instances allocated per class, including | |
35 // array classes. | |
36 // | |
37 // The profiler is currently global for all threads. It can be changed to a | |
38 // per threads profiler by keeping a more elaborate data structure and calling | |
39 // iterate_since_last_scavenge at thread switches. | |
40 | |
41 | |
42 class AllocationProfiler: AllStatic { | |
43 friend class GenCollectedHeap; | |
342 | 44 friend class G1CollectedHeap; |
0 | 45 friend class MarkSweep; |
46 private: | |
47 static bool _active; // tells whether profiler is active | |
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48 static GrowableArray<Klass*>* _print_array; // temporary array for printing |
0 | 49 |
50 // Utility printing functions | |
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51 static void add_class_to_array(Klass* k); |
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52 static void add_classes_to_array(Klass* k); |
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53 static int compare_classes(Klass** k1, Klass** k2); |
0 | 54 static int average(size_t alloc_size, int alloc_count); |
55 static void sort_and_print_array(size_t cutoff); | |
56 | |
57 // Call for collecting allocation information. Called at scavenge, mark-sweep and disengage. | |
58 static void iterate_since_last_gc(); | |
59 | |
60 public: | |
61 // Start profiler | |
62 static void engage(); | |
63 // Stop profiler | |
64 static void disengage(); | |
65 // Tells whether profiler is active | |
66 static bool is_active() { return _active; } | |
67 // Print profile | |
68 static void print(size_t cutoff); // Cutoff in total allocation size (in words) | |
69 }; | |
1972 | 70 |
71 #endif // SHARE_VM_RUNTIME_APROFILER_HPP |