Mercurial > hg > graal-compiler
annotate src/share/vm/interpreter/bytecodeHistogram.hpp @ 3318:188c9a5d6a6d
7040485: Use transparent huge page on linux by default
Summary: Turn on UseLargePages by default but try only HugeTLBFS method if it is not explicitly specified on the command line.
Reviewed-by: ysr
author | iveresov |
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date | Fri, 29 Apr 2011 12:39:32 -0700 |
parents | f95d63e2154a |
children |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1997, 2010, 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_INTERPRETER_BYTECODEHISTOGRAM_HPP |
26 #define SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP | |
27 | |
28 #include "interpreter/bytecodes.hpp" | |
29 #include "memory/allocation.hpp" | |
30 | |
0 | 31 // BytecodeCounter counts the number of bytecodes executed |
32 | |
33 class BytecodeCounter: AllStatic { | |
34 private: | |
35 NOT_PRODUCT(static int _counter_value;) | |
36 NOT_PRODUCT(static jlong _reset_time;) | |
37 | |
38 friend class TemplateInterpreterGenerator; | |
39 friend class BytecodeInterpreter; | |
40 | |
41 public: | |
42 // Initialization | |
43 static void reset() PRODUCT_RETURN; | |
44 | |
45 // Counter info (all info since last reset) | |
46 static int counter_value() PRODUCT_RETURN0 NOT_PRODUCT({ return _counter_value; }); | |
47 static double elapsed_time() PRODUCT_RETURN0; // in seconds | |
48 static double frequency() PRODUCT_RETURN0; // bytecodes/seconds | |
49 | |
50 // Counter printing | |
51 static void print() PRODUCT_RETURN; | |
52 }; | |
53 | |
54 | |
55 // BytecodeHistogram collects number of executions of bytecodes | |
56 | |
57 class BytecodeHistogram: AllStatic { | |
58 private: | |
59 NOT_PRODUCT(static int _counters[Bytecodes::number_of_codes];) // a counter for each bytecode | |
60 | |
61 friend class TemplateInterpreterGenerator; | |
62 friend class InterpreterGenerator; | |
63 friend class BytecodeInterpreter; | |
64 | |
65 public: | |
66 // Initialization | |
67 static void reset() PRODUCT_RETURN; // reset counters | |
68 | |
69 // Profile printing | |
70 static void print(float cutoff = 0.01F) PRODUCT_RETURN; // cutoff in percent | |
71 }; | |
72 | |
73 | |
74 // BytecodePairHistogram collects number of executions of bytecode pairs. | |
75 // A bytecode pair is any sequence of two consequtive bytecodes. | |
76 | |
77 class BytecodePairHistogram: AllStatic { | |
78 public: // for SparcWorks | |
79 enum Constants { | |
80 log2_number_of_codes = 8, // use a power of 2 for faster addressing | |
81 number_of_codes = 1 << log2_number_of_codes, // must be no less than Bytecodes::number_of_codes | |
82 number_of_pairs = number_of_codes * number_of_codes | |
83 }; | |
84 | |
85 private: | |
86 NOT_PRODUCT(static int _index;) // new bytecode is shifted in - used to index into _counters | |
87 NOT_PRODUCT(static int _counters[number_of_pairs];) // a counter for each pair | |
88 | |
89 friend class TemplateInterpreterGenerator; | |
90 friend class InterpreterGenerator; | |
91 | |
92 public: | |
93 // Initialization | |
94 static void reset() PRODUCT_RETURN; // reset counters | |
95 | |
96 // Profile printing | |
97 static void print(float cutoff = 0.01F) PRODUCT_RETURN; // cutoff in percent | |
98 }; | |
1972 | 99 |
100 #endif // SHARE_VM_INTERPRETER_BYTECODEHISTOGRAM_HPP |