Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/ci/ciConstant.hpp@01522ca68fc7 (annotated)
src/share/vm/ci/ciConstant.hpp
Tue, 18 Jun 2013 12:31:07 -0700
- author
- johnc
- date
- Tue, 18 Jun 2013 12:31:07 -0700
- changeset 5277
- 01522ca68fc7
- parent 3138
- f6f3bb0ee072
- child 5658
- edb5ab0f3fe5
- permissions
- -rw-r--r--
8015237: Parallelize string table scanning during strong root processing
Summary: Parallelize the scanning of the intern string table by having each GC worker claim a given number of buckets. Changes were also reviewed by Per Liden <per.liden@oracle.com>.
Reviewed-by: tschatzl, stefank, twisti
| duke@435 | 1 | /* |
| never@3138 | 2 | * Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved. |
| duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@435 | 4 | * |
| duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@435 | 7 | * published by the Free Software Foundation. |
| duke@435 | 8 | * |
| duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@435 | 13 | * accompanied this code). |
| duke@435 | 14 | * |
| duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
| duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@435 | 18 | * |
| trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
| trims@1907 | 21 | * questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| stefank@2314 | 25 | #ifndef SHARE_VM_CI_CICONSTANT_HPP |
| stefank@2314 | 26 | #define SHARE_VM_CI_CICONSTANT_HPP |
| stefank@2314 | 27 | |
| stefank@2314 | 28 | #include "ci/ciClassList.hpp" |
| stefank@2314 | 29 | #include "ci/ciNullObject.hpp" |
| stefank@2314 | 30 | |
| duke@435 | 31 | // ciConstant |
| duke@435 | 32 | // |
| duke@435 | 33 | // This class represents a constant value. |
| duke@435 | 34 | class ciConstant VALUE_OBJ_CLASS_SPEC { |
| never@3138 | 35 | friend class VMStructs; |
| duke@435 | 36 | private: |
| duke@435 | 37 | friend class ciEnv; |
| duke@435 | 38 | friend class ciField; |
| duke@435 | 39 | |
| duke@435 | 40 | BasicType _type; |
| duke@435 | 41 | union { |
| duke@435 | 42 | jint _int; |
| duke@435 | 43 | jlong _long; |
| duke@435 | 44 | jint _long_half[2]; |
| duke@435 | 45 | jfloat _float; |
| duke@435 | 46 | jdouble _double; |
| duke@435 | 47 | ciObject* _object; |
| duke@435 | 48 | } _value; |
| duke@435 | 49 | |
| duke@435 | 50 | public: |
| duke@435 | 51 | |
| duke@435 | 52 | ciConstant() { |
| duke@435 | 53 | _type = T_ILLEGAL; _value._long = -1; |
| duke@435 | 54 | } |
| duke@435 | 55 | ciConstant(BasicType type, jint value) { |
| duke@435 | 56 | assert(type != T_LONG && type != T_DOUBLE && type != T_FLOAT, |
| duke@435 | 57 | "using the wrong ciConstant constructor"); |
| duke@435 | 58 | _type = type; _value._int = value; |
| duke@435 | 59 | } |
| duke@435 | 60 | ciConstant(jlong value) { |
| duke@435 | 61 | _type = T_LONG; _value._long = value; |
| duke@435 | 62 | } |
| duke@435 | 63 | ciConstant(jfloat value) { |
| duke@435 | 64 | _type = T_FLOAT; _value._float = value; |
| duke@435 | 65 | } |
| duke@435 | 66 | ciConstant(jdouble value) { |
| duke@435 | 67 | _type = T_DOUBLE; _value._double = value; |
| duke@435 | 68 | } |
| duke@435 | 69 | ciConstant(BasicType type, ciObject* p) { |
| duke@435 | 70 | _type = type; _value._object = p; |
| duke@435 | 71 | } |
| duke@435 | 72 | |
| duke@435 | 73 | BasicType basic_type() const { return _type; } |
| duke@435 | 74 | |
| duke@435 | 75 | jboolean as_boolean() { |
| duke@435 | 76 | assert(basic_type() == T_BOOLEAN, "wrong type"); |
| duke@435 | 77 | return (jboolean)_value._int; |
| duke@435 | 78 | } |
| duke@435 | 79 | jchar as_char() { |
| duke@435 | 80 | assert(basic_type() == T_CHAR, "wrong type"); |
| duke@435 | 81 | return (jchar)_value._int; |
| duke@435 | 82 | } |
| duke@435 | 83 | jbyte as_byte() { |
| duke@435 | 84 | assert(basic_type() == T_BYTE, "wrong type"); |
| duke@435 | 85 | return (jbyte)_value._int; |
| duke@435 | 86 | } |
| duke@435 | 87 | jshort as_short() { |
| duke@435 | 88 | assert(basic_type() == T_SHORT, "wrong type"); |
| duke@435 | 89 | return (jshort)_value._int; |
| duke@435 | 90 | } |
| duke@435 | 91 | jint as_int() { |
| duke@435 | 92 | assert(basic_type() == T_BOOLEAN || basic_type() == T_CHAR || |
| duke@435 | 93 | basic_type() == T_BYTE || basic_type() == T_SHORT || |
| duke@435 | 94 | basic_type() == T_INT, "wrong type"); |
| duke@435 | 95 | return _value._int; |
| duke@435 | 96 | } |
| duke@435 | 97 | jlong as_long() { |
| duke@435 | 98 | assert(basic_type() == T_LONG, "wrong type"); |
| duke@435 | 99 | return _value._long; |
| duke@435 | 100 | } |
| duke@435 | 101 | jfloat as_float() { |
| duke@435 | 102 | assert(basic_type() == T_FLOAT, "wrong type"); |
| duke@435 | 103 | return _value._float; |
| duke@435 | 104 | } |
| duke@435 | 105 | jdouble as_double() { |
| duke@435 | 106 | assert(basic_type() == T_DOUBLE, "wrong type"); |
| duke@435 | 107 | return _value._double; |
| duke@435 | 108 | } |
| duke@435 | 109 | ciObject* as_object() const { |
| duke@435 | 110 | assert(basic_type() == T_OBJECT || basic_type() == T_ARRAY, "wrong type"); |
| duke@435 | 111 | return _value._object; |
| duke@435 | 112 | } |
| duke@435 | 113 | |
| duke@435 | 114 | // Debugging output |
| duke@435 | 115 | void print(); |
| duke@435 | 116 | }; |
| stefank@2314 | 117 | |
| stefank@2314 | 118 | #endif // SHARE_VM_CI_CICONSTANT_HPP |
