Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/stubCodeGenerator.hpp @ 6972:bd7a7ce2e264
6830717: replay of compilations would help with debugging
Summary: When java process crashed in compiler thread, repeat the compilation process will help finding root cause. This is done with using SA dump application class data and replay data from core dump, then use debug version of jvm to recompile the problematic java method.
Reviewed-by: kvn, twisti, sspitsyn
Contributed-by: yumin.qi@oracle.com
| author | minqi |
|---|---|
| date | Mon, 12 Nov 2012 14:03:53 -0800 |
| parents | b9a9ed0f8eeb |
| children | 63a4eb8bcd23 |
| rev | line source |
|---|---|
| 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_STUBCODEGENERATOR_HPP |
| 26 #define SHARE_VM_RUNTIME_STUBCODEGENERATOR_HPP | |
| 27 | |
| 28 #include "asm/assembler.hpp" | |
| 29 #include "memory/allocation.hpp" | |
| 30 | |
| 0 | 31 // All the basic framework for stubcode generation/debugging/printing. |
| 32 | |
| 33 | |
| 34 // A StubCodeDesc describes a piece of generated code (usually stubs). | |
| 35 // This information is mainly useful for debugging and printing. | |
| 36 // Currently, code descriptors are simply chained in a linked list, | |
| 37 // this may have to change if searching becomes too slow. | |
| 38 | |
| 6197 | 39 class StubCodeDesc: public CHeapObj<mtCode> { |
| 0 | 40 protected: |
| 41 static StubCodeDesc* _list; // the list of all descriptors | |
| 42 static int _count; // length of list | |
| 43 | |
| 44 StubCodeDesc* _next; // the next element in the linked list | |
| 45 const char* _group; // the group to which the stub code belongs | |
| 46 const char* _name; // the name assigned to the stub code | |
| 47 int _index; // serial number assigned to the stub | |
| 48 address _begin; // points to the first byte of the stub code (included) | |
| 49 address _end; // points to the first byte after the stub code (excluded) | |
| 50 | |
| 51 void set_end(address end) { | |
| 52 assert(_begin <= end, "begin & end not properly ordered"); | |
| 53 _end = end; | |
| 54 } | |
| 55 | |
| 56 void set_begin(address begin) { | |
| 57 assert(begin >= _begin, "begin may not decrease"); | |
| 58 assert(_end == NULL || begin <= _end, "begin & end not properly ordered"); | |
| 59 _begin = begin; | |
| 60 } | |
| 61 | |
| 62 friend class StubCodeMark; | |
| 63 friend class StubCodeGenerator; | |
| 64 | |
| 65 public: | |
| 66 static StubCodeDesc* desc_for(address pc); // returns the code descriptor for the code containing pc or NULL | |
| 67 static StubCodeDesc* desc_for_index(int); // returns the code descriptor for the index or NULL | |
| 68 static const char* name_for(address pc); // returns the name of the code containing pc or NULL | |
| 69 | |
| 70 StubCodeDesc(const char* group, const char* name, address begin) { | |
| 71 assert(name != NULL, "no name specified"); | |
| 72 _next = _list; | |
| 73 _group = group; | |
| 74 _name = name; | |
| 75 _index = ++_count; // (never zero) | |
| 76 _begin = begin; | |
| 77 _end = NULL; | |
| 78 _list = this; | |
| 79 }; | |
| 80 | |
| 81 const char* group() const { return _group; } | |
| 82 const char* name() const { return _name; } | |
| 83 int index() const { return _index; } | |
| 84 address begin() const { return _begin; } | |
| 85 address end() const { return _end; } | |
| 86 int size_in_bytes() const { return _end - _begin; } | |
| 87 bool contains(address pc) const { return _begin <= pc && pc < _end; } | |
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88 void print_on(outputStream* st) const; |
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89 void print() const { print_on(tty); } |
| 0 | 90 }; |
| 91 | |
| 92 // The base class for all stub-generating code generators. | |
| 93 // Provides utility functions. | |
| 94 | |
| 95 class StubCodeGenerator: public StackObj { | |
| 96 protected: | |
| 97 MacroAssembler* _masm; | |
| 98 | |
| 99 StubCodeDesc* _first_stub; | |
| 100 StubCodeDesc* _last_stub; | |
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101 bool _print_code; |
| 0 | 102 |
| 103 public: | |
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104 StubCodeGenerator(CodeBuffer* code, bool print_code = false); |
| 0 | 105 ~StubCodeGenerator(); |
| 106 | |
| 107 MacroAssembler* assembler() const { return _masm; } | |
| 108 | |
| 109 virtual void stub_prolog(StubCodeDesc* cdesc); // called by StubCodeMark constructor | |
| 110 virtual void stub_epilog(StubCodeDesc* cdesc); // called by StubCodeMark destructor | |
| 111 }; | |
| 112 | |
| 113 | |
| 114 // Stack-allocated helper class used to assciate a stub code with a name. | |
| 115 // All stub code generating functions that use a StubCodeMark will be registered | |
| 116 // in the global StubCodeDesc list and the generated stub code can be identified | |
| 117 // later via an address pointing into it. | |
| 118 | |
| 119 class StubCodeMark: public StackObj { | |
| 120 protected: | |
| 121 StubCodeGenerator* _cgen; | |
| 122 StubCodeDesc* _cdesc; | |
| 123 | |
| 124 public: | |
| 125 StubCodeMark(StubCodeGenerator* cgen, const char* group, const char* name); | |
| 126 ~StubCodeMark(); | |
| 127 | |
| 128 }; | |
| 1972 | 129 |
| 130 #endif // SHARE_VM_RUNTIME_STUBCODEGENERATOR_HPP |