Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/aprofiler.hpp @ 8804:91bf0bdae37b
8008217: CDS: Class data sharing limits the malloc heap on Solaris
Summary: In 64bit VM move CDS archive address to 32G on all platforms using new flag SharedBaseAddress. In 32bit VM set CDS archive address to 3Gb on Linux and let other OSs pick the address.
Reviewed-by: kvn, dcubed, zgu, hseigel
| author | coleenp |
|---|---|
| date | Wed, 20 Mar 2013 08:04:54 -0400 |
| parents | da91efe96a93 |
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| rev | line source |
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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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coleenp
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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 |