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src/share/vm/utilities/histogram.hpp@dc1769738300 (annotated)
src/share/vm/utilities/histogram.hpp
Tue, 24 Jul 2018 13:22:11 +0800
- author
- aoqi
- date
- Tue, 24 Jul 2018 13:22:11 +0800
- changeset 9137
- dc1769738300
- parent 6876
- 710a3c8b516e
- permissions
- -rw-r--r--
#7048 added Loongson release info to hs_err crash files
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | * |
| aoqi@0 | 23 | */ |
| aoqi@0 | 24 | |
| aoqi@0 | 25 | #ifndef SHARE_VM_UTILITIES_HISTOGRAM_HPP |
| aoqi@0 | 26 | #define SHARE_VM_UTILITIES_HISTOGRAM_HPP |
| aoqi@0 | 27 | |
| aoqi@0 | 28 | #include "memory/allocation.hpp" |
| aoqi@0 | 29 | #include "runtime/os.hpp" |
| aoqi@0 | 30 | #include "utilities/growableArray.hpp" |
| aoqi@0 | 31 | #ifdef TARGET_OS_FAMILY_linux |
| aoqi@0 | 32 | # include "os_linux.inline.hpp" |
| aoqi@0 | 33 | #endif |
| aoqi@0 | 34 | #ifdef TARGET_OS_FAMILY_solaris |
| aoqi@0 | 35 | # include "os_solaris.inline.hpp" |
| aoqi@0 | 36 | #endif |
| aoqi@0 | 37 | #ifdef TARGET_OS_FAMILY_windows |
| aoqi@0 | 38 | # include "os_windows.inline.hpp" |
| aoqi@0 | 39 | #endif |
| aoqi@0 | 40 | #ifdef TARGET_OS_FAMILY_aix |
| aoqi@0 | 41 | # include "os_aix.inline.hpp" |
| aoqi@0 | 42 | #endif |
| aoqi@0 | 43 | #ifdef TARGET_OS_FAMILY_bsd |
| aoqi@0 | 44 | # include "os_bsd.inline.hpp" |
| aoqi@0 | 45 | #endif |
| aoqi@0 | 46 | |
| aoqi@0 | 47 | // This class provides a framework for collecting various statistics. |
| aoqi@0 | 48 | // The current implementation is oriented towards counting invocations |
| aoqi@0 | 49 | // of various types, but that can be easily changed. |
| aoqi@0 | 50 | // |
| aoqi@0 | 51 | // To use it, you need to declare a Histogram*, and a subtype of |
| aoqi@0 | 52 | // HistogramElement: |
| aoqi@0 | 53 | // |
| aoqi@0 | 54 | // HistogramElement* MyHistogram; |
| aoqi@0 | 55 | // |
| aoqi@0 | 56 | // class MyHistogramElement : public HistogramElement { |
| aoqi@0 | 57 | // public: |
| aoqi@0 | 58 | // MyHistogramElement(char* name); |
| aoqi@0 | 59 | // }; |
| aoqi@0 | 60 | // |
| aoqi@0 | 61 | // MyHistogramElement::MyHistogramElement(char* elementName) { |
| aoqi@0 | 62 | // _name = elementName; |
| aoqi@0 | 63 | // |
| aoqi@0 | 64 | // if(MyHistogram == NULL) |
| aoqi@0 | 65 | // MyHistogram = new Histogram("My Call Counts",100); |
| aoqi@0 | 66 | // |
| aoqi@0 | 67 | // MyHistogram->add_element(this); |
| aoqi@0 | 68 | // } |
| aoqi@0 | 69 | // |
| aoqi@0 | 70 | // #define MyCountWrapper(arg) static MyHistogramElement* e = new MyHistogramElement(arg); e->increment_count() |
| aoqi@0 | 71 | // |
| aoqi@0 | 72 | // This gives you a simple way to count invocations of specfic functions: |
| aoqi@0 | 73 | // |
| aoqi@0 | 74 | // void a_function_that_is_being_counted() { |
| aoqi@0 | 75 | // MyCountWrapper("FunctionName"); |
| aoqi@0 | 76 | // ... |
| aoqi@0 | 77 | // } |
| aoqi@0 | 78 | // |
| aoqi@0 | 79 | // To print the results, invoke print() on your Histogram*. |
| aoqi@0 | 80 | |
| aoqi@0 | 81 | #ifdef ASSERT |
| aoqi@0 | 82 | |
| aoqi@0 | 83 | class HistogramElement : public CHeapObj<mtInternal> { |
| aoqi@0 | 84 | protected: |
| aoqi@0 | 85 | jint _count; |
| aoqi@0 | 86 | const char* _name; |
| aoqi@0 | 87 | |
| aoqi@0 | 88 | public: |
| aoqi@0 | 89 | HistogramElement(); |
| aoqi@0 | 90 | virtual int count(); |
| aoqi@0 | 91 | virtual const char* name(); |
| aoqi@0 | 92 | virtual void increment_count(); |
| aoqi@0 | 93 | void print_on(outputStream* st) const; |
| aoqi@0 | 94 | virtual int compare(HistogramElement* e1,HistogramElement* e2); |
| aoqi@0 | 95 | }; |
| aoqi@0 | 96 | |
| aoqi@0 | 97 | class Histogram : public CHeapObj<mtInternal> { |
| aoqi@0 | 98 | protected: |
| aoqi@0 | 99 | GrowableArray<HistogramElement*>* _elements; |
| aoqi@0 | 100 | GrowableArray<HistogramElement*>* elements() { return _elements; } |
| aoqi@0 | 101 | const char* _title; |
| aoqi@0 | 102 | const char* title() { return _title; } |
| aoqi@0 | 103 | static int sort_helper(HistogramElement** e1,HistogramElement** e2); |
| aoqi@0 | 104 | virtual void print_header(outputStream* st); |
| aoqi@0 | 105 | virtual void print_elements(outputStream* st); |
| aoqi@0 | 106 | |
| aoqi@0 | 107 | public: |
| aoqi@0 | 108 | Histogram(const char* title,int estimatedSize); |
| aoqi@0 | 109 | virtual void add_element(HistogramElement* element); |
| aoqi@0 | 110 | void print_on(outputStream* st) const; |
| aoqi@0 | 111 | }; |
| aoqi@0 | 112 | |
| aoqi@0 | 113 | #endif |
| aoqi@0 | 114 | |
| aoqi@0 | 115 | #endif // SHARE_VM_UTILITIES_HISTOGRAM_HPP |
