Mercurial > hg > truffle
annotate src/share/vm/interpreter/bytecodeHistogram.hpp @ 1721:413ad0331a0c
6977924: Changes for 6975078 produce build error with certain gcc versions
Summary: The changes introduced for 6975078 assign badHeapOopVal to the _allocation field in the ResourceObj class. In 32 bit linux builds with certain versions of gcc this assignment will be flagged as an error while compiling allocation.cpp. In 32 bit builds the constant value badHeapOopVal (which is cast to an intptr_t) is negative. The _allocation field is typed as an unsigned intptr_t and gcc catches this as an error.
Reviewed-by: jcoomes, ysr, phh
author | johnc |
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date | Wed, 18 Aug 2010 10:59:06 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
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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 // BytecodeCounter counts the number of bytecodes executed | |
26 | |
27 class BytecodeCounter: AllStatic { | |
28 private: | |
29 NOT_PRODUCT(static int _counter_value;) | |
30 NOT_PRODUCT(static jlong _reset_time;) | |
31 | |
32 friend class TemplateInterpreterGenerator; | |
33 friend class BytecodeInterpreter; | |
34 | |
35 public: | |
36 // Initialization | |
37 static void reset() PRODUCT_RETURN; | |
38 | |
39 // Counter info (all info since last reset) | |
40 static int counter_value() PRODUCT_RETURN0 NOT_PRODUCT({ return _counter_value; }); | |
41 static double elapsed_time() PRODUCT_RETURN0; // in seconds | |
42 static double frequency() PRODUCT_RETURN0; // bytecodes/seconds | |
43 | |
44 // Counter printing | |
45 static void print() PRODUCT_RETURN; | |
46 }; | |
47 | |
48 | |
49 // BytecodeHistogram collects number of executions of bytecodes | |
50 | |
51 class BytecodeHistogram: AllStatic { | |
52 private: | |
53 NOT_PRODUCT(static int _counters[Bytecodes::number_of_codes];) // a counter for each bytecode | |
54 | |
55 friend class TemplateInterpreterGenerator; | |
56 friend class InterpreterGenerator; | |
57 friend class BytecodeInterpreter; | |
58 | |
59 public: | |
60 // Initialization | |
61 static void reset() PRODUCT_RETURN; // reset counters | |
62 | |
63 // Profile printing | |
64 static void print(float cutoff = 0.01F) PRODUCT_RETURN; // cutoff in percent | |
65 }; | |
66 | |
67 | |
68 // BytecodePairHistogram collects number of executions of bytecode pairs. | |
69 // A bytecode pair is any sequence of two consequtive bytecodes. | |
70 | |
71 class BytecodePairHistogram: AllStatic { | |
72 public: // for SparcWorks | |
73 enum Constants { | |
74 log2_number_of_codes = 8, // use a power of 2 for faster addressing | |
75 number_of_codes = 1 << log2_number_of_codes, // must be no less than Bytecodes::number_of_codes | |
76 number_of_pairs = number_of_codes * number_of_codes | |
77 }; | |
78 | |
79 private: | |
80 NOT_PRODUCT(static int _index;) // new bytecode is shifted in - used to index into _counters | |
81 NOT_PRODUCT(static int _counters[number_of_pairs];) // a counter for each pair | |
82 | |
83 friend class TemplateInterpreterGenerator; | |
84 friend class InterpreterGenerator; | |
85 | |
86 public: | |
87 // Initialization | |
88 static void reset() PRODUCT_RETURN; // reset counters | |
89 | |
90 // Profile printing | |
91 static void print(float cutoff = 0.01F) PRODUCT_RETURN; // cutoff in percent | |
92 }; |