Mercurial > hg > truffle
annotate src/share/vm/ci/ciConstant.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 | f6f3bb0ee072 |
| children | edb5ab0f3fe5 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 3939 | 2 * Copyright (c) 1999, 2011, 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_CI_CICONSTANT_HPP |
| 26 #define SHARE_VM_CI_CICONSTANT_HPP | |
| 27 | |
| 28 #include "ci/ciClassList.hpp" | |
| 29 #include "ci/ciNullObject.hpp" | |
| 30 | |
| 0 | 31 // ciConstant |
| 32 // | |
| 33 // This class represents a constant value. | |
| 34 class ciConstant VALUE_OBJ_CLASS_SPEC { | |
| 3939 | 35 friend class VMStructs; |
| 0 | 36 private: |
| 37 friend class ciEnv; | |
| 38 friend class ciField; | |
| 39 | |
| 40 BasicType _type; | |
| 41 union { | |
| 42 jint _int; | |
| 43 jlong _long; | |
| 44 jint _long_half[2]; | |
| 45 jfloat _float; | |
| 46 jdouble _double; | |
| 47 ciObject* _object; | |
| 48 } _value; | |
| 49 | |
| 50 public: | |
| 51 | |
| 52 ciConstant() { | |
| 53 _type = T_ILLEGAL; _value._long = -1; | |
| 54 } | |
| 55 ciConstant(BasicType type, jint value) { | |
| 56 assert(type != T_LONG && type != T_DOUBLE && type != T_FLOAT, | |
| 57 "using the wrong ciConstant constructor"); | |
| 58 _type = type; _value._int = value; | |
| 59 } | |
| 60 ciConstant(jlong value) { | |
| 61 _type = T_LONG; _value._long = value; | |
| 62 } | |
| 63 ciConstant(jfloat value) { | |
| 64 _type = T_FLOAT; _value._float = value; | |
| 65 } | |
| 66 ciConstant(jdouble value) { | |
| 67 _type = T_DOUBLE; _value._double = value; | |
| 68 } | |
| 69 ciConstant(BasicType type, ciObject* p) { | |
| 70 _type = type; _value._object = p; | |
| 71 } | |
| 72 | |
| 73 BasicType basic_type() const { return _type; } | |
| 74 | |
| 75 jboolean as_boolean() { | |
| 76 assert(basic_type() == T_BOOLEAN, "wrong type"); | |
| 77 return (jboolean)_value._int; | |
| 78 } | |
| 79 jchar as_char() { | |
| 80 assert(basic_type() == T_CHAR, "wrong type"); | |
| 81 return (jchar)_value._int; | |
| 82 } | |
| 83 jbyte as_byte() { | |
| 84 assert(basic_type() == T_BYTE, "wrong type"); | |
| 85 return (jbyte)_value._int; | |
| 86 } | |
| 87 jshort as_short() { | |
| 88 assert(basic_type() == T_SHORT, "wrong type"); | |
| 89 return (jshort)_value._int; | |
| 90 } | |
| 91 jint as_int() { | |
| 92 assert(basic_type() == T_BOOLEAN || basic_type() == T_CHAR || | |
| 93 basic_type() == T_BYTE || basic_type() == T_SHORT || | |
| 94 basic_type() == T_INT, "wrong type"); | |
| 95 return _value._int; | |
| 96 } | |
| 97 jlong as_long() { | |
| 98 assert(basic_type() == T_LONG, "wrong type"); | |
| 99 return _value._long; | |
| 100 } | |
| 101 jfloat as_float() { | |
| 102 assert(basic_type() == T_FLOAT, "wrong type"); | |
| 103 return _value._float; | |
| 104 } | |
| 105 jdouble as_double() { | |
| 106 assert(basic_type() == T_DOUBLE, "wrong type"); | |
| 107 return _value._double; | |
| 108 } | |
| 109 ciObject* as_object() const { | |
| 110 assert(basic_type() == T_OBJECT || basic_type() == T_ARRAY, "wrong type"); | |
| 111 return _value._object; | |
| 112 } | |
| 113 | |
| 114 // Debugging output | |
| 115 void print(); | |
| 116 }; | |
| 1972 | 117 |
| 118 #endif // SHARE_VM_CI_CICONSTANT_HPP |