Mercurial > hg > truffle
annotate src/share/vm/interpreter/bytecodeTracer.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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2 * Copyright (c) 1997, 2003, Oracle and/or its affiliates. All rights reserved. |
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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 // The BytecodeTracer is a helper class used by the interpreter for run-time | |
26 // bytecode tracing. If bytecode tracing is turned on, trace() will be called | |
27 // for each bytecode. | |
28 // | |
29 // By specialising the BytecodeClosure, all kinds of bytecode traces can | |
30 // be done. | |
31 | |
32 #ifndef PRODUCT | |
33 // class BytecodeTracer is only used by TraceBytecodes option | |
34 | |
35 class BytecodeClosure; | |
36 class BytecodeTracer: AllStatic { | |
37 private: | |
38 static BytecodeClosure* _closure; | |
39 | |
40 public: | |
41 static BytecodeClosure* std_closure(); // a printing closure | |
42 static BytecodeClosure* closure() { return _closure; } | |
43 static void set_closure(BytecodeClosure* closure) { _closure = closure; } | |
44 | |
45 static void trace(methodHandle method, address bcp, uintptr_t tos, uintptr_t tos2, outputStream* st = tty); | |
46 static void trace(methodHandle method, address bcp, outputStream* st = tty); | |
47 }; | |
48 | |
49 | |
50 // For each bytecode, a BytecodeClosure's trace() routine will be called. | |
51 | |
52 class BytecodeClosure { | |
53 public: | |
54 virtual void trace(methodHandle method, address bcp, uintptr_t tos, uintptr_t tos2, outputStream* st) = 0; | |
55 virtual void trace(methodHandle method, address bcp, outputStream* st) = 0; | |
56 }; | |
57 | |
58 #endif // !PRODUCT |