Mercurial > hg > graal-compiler
annotate src/share/vm/oops/oop.cpp @ 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 | c18cbe5936b8 |
children | 126ea7725993 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2009, 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 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_oop.cpp.incl" | |
27 | |
28 bool always_do_update_barrier = false; | |
29 | |
30 BarrierSet* oopDesc::_bs = NULL; | |
31 | |
32 #ifdef PRODUCT | |
33 void oopDesc::print_on(outputStream* st) const {} | |
34 void oopDesc::print_address_on(outputStream* st) const {} | |
35 char* oopDesc::print_string() { return NULL; } | |
36 void oopDesc::print() {} | |
37 void oopDesc::print_address() {} | |
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38 |
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39 #else //PRODUCT |
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40 |
0 | 41 void oopDesc::print_on(outputStream* st) const { |
42 if (this == NULL) { | |
43 st->print_cr("NULL"); | |
44 } else { | |
45 blueprint()->oop_print_on(oop(this), st); | |
46 } | |
47 } | |
48 | |
49 void oopDesc::print_address_on(outputStream* st) const { | |
50 if (PrintOopAddress) { | |
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51 st->print("{"INTPTR_FORMAT"}", this); |
0 | 52 } |
53 } | |
54 | |
55 void oopDesc::print() { print_on(tty); } | |
56 | |
57 void oopDesc::print_address() { print_address_on(tty); } | |
58 | |
59 char* oopDesc::print_string() { | |
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60 stringStream st; |
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61 print_on(&st); |
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62 return st.as_string(); |
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63 } |
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64 |
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65 #endif // PRODUCT |
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66 |
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67 // The print_value functions are present in all builds, to support the disassembler. |
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68 |
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69 void oopDesc::print_value() { |
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70 print_value_on(tty); |
0 | 71 } |
72 | |
73 char* oopDesc::print_value_string() { | |
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74 char buf[100]; |
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75 stringStream st(buf, sizeof(buf)); |
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76 print_value_on(&st); |
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77 return st.as_string(); |
0 | 78 } |
79 | |
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80 void oopDesc::print_value_on(outputStream* st) const { |
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81 oop obj = oop(this); |
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82 if (this == NULL) { |
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83 st->print("NULL"); |
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84 } else if (java_lang_String::is_instance(obj)) { |
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85 java_lang_String::print(obj, st); |
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86 #ifndef PRODUCT |
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87 if (PrintOopAddress) print_address_on(st); |
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88 #endif //PRODUCT |
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89 #ifdef ASSERT |
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90 } else if (!Universe::heap()->is_in(obj) || !Universe::heap()->is_in(klass())) { |
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91 st->print("### BAD OOP %p ###", (address)obj); |
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92 #endif //ASSERT |
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93 } else { |
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94 blueprint()->oop_print_value_on(obj, st); |
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95 } |
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96 } |
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97 |
0 | 98 |
99 void oopDesc::verify_on(outputStream* st) { | |
100 if (this != NULL) { | |
101 blueprint()->oop_verify_on(this, st); | |
102 } | |
103 } | |
104 | |
105 | |
106 void oopDesc::verify() { | |
107 verify_on(tty); | |
108 } | |
109 | |
110 | |
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111 // XXX verify_old_oop doesn't do anything (should we remove?) |
0 | 112 void oopDesc::verify_old_oop(oop* p, bool allow_dirty) { |
113 blueprint()->oop_verify_old_oop(this, p, allow_dirty); | |
114 } | |
115 | |
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116 void oopDesc::verify_old_oop(narrowOop* p, bool allow_dirty) { |
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117 blueprint()->oop_verify_old_oop(this, p, allow_dirty); |
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118 } |
0 | 119 |
120 bool oopDesc::partially_loaded() { | |
121 return blueprint()->oop_partially_loaded(this); | |
122 } | |
123 | |
124 | |
125 void oopDesc::set_partially_loaded() { | |
126 blueprint()->oop_set_partially_loaded(this); | |
127 } | |
128 | |
129 | |
130 intptr_t oopDesc::slow_identity_hash() { | |
131 // slow case; we have to acquire the micro lock in order to locate the header | |
132 ResetNoHandleMark rnm; // Might be called from LEAF/QUICK ENTRY | |
133 HandleMark hm; | |
134 Handle object((oop)this); | |
135 assert(!is_shared_readonly(), "using identity hash on readonly object?"); | |
136 return ObjectSynchronizer::identity_hash_value_for(object); | |
137 } | |
138 | |
139 VerifyOopClosure VerifyOopClosure::verify_oop; | |
113
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140 |
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141 void VerifyOopClosure::do_oop(oop* p) { VerifyOopClosure::do_oop_work(p); } |
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142 void VerifyOopClosure::do_oop(narrowOop* p) { VerifyOopClosure::do_oop_work(p); } |