Mercurial > hg > graal-compiler
annotate src/share/vm/utilities/constantTag.hpp @ 1711:a6bff45449bc
6973570: OrderAccess::storestore() scales poorly on multi-socket x64 and sparc: cache-line ping-ponging
Summary: volatile store to static variable removed in favour of a volatile store to stack to avoid excessive cache coherency traffic; verified that the volatile store is not elided by any of our current compilers.
Reviewed-by: dholmes, dice, jcoomes, kvn
author | ysr |
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date | Tue, 10 Aug 2010 14:53:35 -0700 |
parents | 083fde3b838e |
children | 3b2dea75431e |
rev | line source |
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0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 1997, 2008, 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 | |
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7 * published by the Free Software Foundation. | |
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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 | |
25 // constant tags in Java .class files | |
26 | |
27 | |
28 enum { | |
29 // See jvm.h for shared JVM_CONSTANT_XXX tags | |
30 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java | |
31 // Hotspot specific tags | |
32 JVM_CONSTANT_Invalid = 0, // For bad value initialization | |
33 JVM_CONSTANT_InternalMin = 100, // First implementation tag (aside from bad value of course) | |
34 JVM_CONSTANT_UnresolvedClass = 100, // Temporary tag until actual use | |
35 JVM_CONSTANT_ClassIndex = 101, // Temporary tag while constructing constant pool | |
36 JVM_CONSTANT_UnresolvedString = 102, // Temporary tag until actual use | |
37 JVM_CONSTANT_StringIndex = 103, // Temporary tag while constructing constant pool | |
38 JVM_CONSTANT_UnresolvedClassInError = 104, // Error tag due to resolution error | |
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39 JVM_CONSTANT_Object = 105, // Required for BoundMethodHandle arguments. |
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40 JVM_CONSTANT_InternalMax = 105 // Last implementation tag |
0 | 41 }; |
42 | |
43 | |
44 class constantTag VALUE_OBJ_CLASS_SPEC { | |
45 private: | |
46 jbyte _tag; | |
47 public: | |
48 bool is_klass() const { return _tag == JVM_CONSTANT_Class; } | |
49 bool is_field () const { return _tag == JVM_CONSTANT_Fieldref; } | |
50 bool is_method() const { return _tag == JVM_CONSTANT_Methodref; } | |
51 bool is_interface_method() const { return _tag == JVM_CONSTANT_InterfaceMethodref; } | |
52 bool is_string() const { return _tag == JVM_CONSTANT_String; } | |
53 bool is_int() const { return _tag == JVM_CONSTANT_Integer; } | |
54 bool is_float() const { return _tag == JVM_CONSTANT_Float; } | |
55 bool is_long() const { return _tag == JVM_CONSTANT_Long; } | |
56 bool is_double() const { return _tag == JVM_CONSTANT_Double; } | |
57 bool is_name_and_type() const { return _tag == JVM_CONSTANT_NameAndType; } | |
58 bool is_utf8() const { return _tag == JVM_CONSTANT_Utf8; } | |
59 | |
60 bool is_invalid() const { return _tag == JVM_CONSTANT_Invalid; } | |
61 | |
62 bool is_unresolved_klass() const { | |
63 return _tag == JVM_CONSTANT_UnresolvedClass || _tag == JVM_CONSTANT_UnresolvedClassInError; | |
64 } | |
65 | |
66 bool is_unresolved_klass_in_error() const { | |
67 return _tag == JVM_CONSTANT_UnresolvedClassInError; | |
68 } | |
69 | |
70 bool is_klass_index() const { return _tag == JVM_CONSTANT_ClassIndex; } | |
71 bool is_unresolved_string() const { return _tag == JVM_CONSTANT_UnresolvedString; } | |
72 bool is_string_index() const { return _tag == JVM_CONSTANT_StringIndex; } | |
73 | |
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74 bool is_object() const { return _tag == JVM_CONSTANT_Object; } |
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75 |
0 | 76 bool is_klass_reference() const { return is_klass_index() || is_unresolved_klass(); } |
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77 bool is_klass_or_reference() const{ return is_klass() || is_klass_reference(); } |
0 | 78 bool is_field_or_method() const { return is_field() || is_method() || is_interface_method(); } |
79 bool is_symbol() const { return is_utf8(); } | |
80 | |
1602 | 81 bool is_method_type() const { return _tag == JVM_CONSTANT_MethodType; } |
82 bool is_method_handle() const { return _tag == JVM_CONSTANT_MethodHandle; } | |
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83 bool is_invoke_dynamic() const { return _tag == JVM_CONSTANT_InvokeDynamic; } |
1602 | 84 |
85 constantTag() { | |
86 _tag = JVM_CONSTANT_Invalid; | |
87 } | |
0 | 88 constantTag(jbyte tag) { |
89 assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) || | |
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90 (tag >= JVM_CONSTANT_MethodHandle && tag <= JVM_CONSTANT_InvokeDynamic) || |
0 | 91 (tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag"); |
92 _tag = tag; | |
93 } | |
94 | |
95 jbyte value() { return _tag; } | |
96 | |
1602 | 97 BasicType basic_type() const; // if used with ldc, what kind of value gets pushed? |
98 | |
99 const char* internal_name() const; // for error reporting | |
100 | |
0 | 101 void print_on(outputStream* st) const PRODUCT_RETURN; |
102 }; |