Mercurial > hg > graal-jvmci-8
annotate src/os_cpu/linux_x86/vm/orderAccess_linux_x86.inline.hpp @ 1930:2d26b0046e0d
Merge.
author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
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date | Tue, 30 Nov 2010 14:53:30 +0100 |
parents | a6bff45449bc |
children | f95d63e2154a |
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0 | 1 /* |
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2 * Copyright (c) 2003, 2010, 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 // Implementation of class OrderAccess. | |
26 | |
27 inline void OrderAccess::loadload() { acquire(); } | |
28 inline void OrderAccess::storestore() { release(); } | |
29 inline void OrderAccess::loadstore() { acquire(); } | |
30 inline void OrderAccess::storeload() { fence(); } | |
31 | |
32 inline void OrderAccess::acquire() { | |
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33 volatile intptr_t local_dummy; |
0 | 34 #ifdef AMD64 |
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35 __asm__ volatile ("movq 0(%%rsp), %0" : "=r" (local_dummy) : : "memory"); |
0 | 36 #else |
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37 __asm__ volatile ("movl 0(%%esp),%0" : "=r" (local_dummy) : : "memory"); |
0 | 38 #endif // AMD64 |
39 } | |
40 | |
41 inline void OrderAccess::release() { | |
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42 // Avoid hitting the same cache-line from |
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43 // different threads. |
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44 volatile jint local_dummy = 0; |
0 | 45 } |
46 | |
47 inline void OrderAccess::fence() { | |
48 if (os::is_MP()) { | |
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49 // always use locked addl since mfence is sometimes expensive |
0 | 50 #ifdef AMD64 |
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51 __asm__ volatile ("lock; addl $0,0(%%rsp)" : : : "cc", "memory"); |
0 | 52 #else |
53 __asm__ volatile ("lock; addl $0,0(%%esp)" : : : "cc", "memory"); | |
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54 #endif |
0 | 55 } |
56 } | |
57 | |
58 inline jbyte OrderAccess::load_acquire(volatile jbyte* p) { return *p; } | |
59 inline jshort OrderAccess::load_acquire(volatile jshort* p) { return *p; } | |
60 inline jint OrderAccess::load_acquire(volatile jint* p) { return *p; } | |
61 inline jlong OrderAccess::load_acquire(volatile jlong* p) { return *p; } | |
62 inline jubyte OrderAccess::load_acquire(volatile jubyte* p) { return *p; } | |
63 inline jushort OrderAccess::load_acquire(volatile jushort* p) { return *p; } | |
64 inline juint OrderAccess::load_acquire(volatile juint* p) { return *p; } | |
65 inline julong OrderAccess::load_acquire(volatile julong* p) { return *p; } | |
66 inline jfloat OrderAccess::load_acquire(volatile jfloat* p) { return *p; } | |
67 inline jdouble OrderAccess::load_acquire(volatile jdouble* p) { return *p; } | |
68 | |
69 inline intptr_t OrderAccess::load_ptr_acquire(volatile intptr_t* p) { return *p; } | |
70 inline void* OrderAccess::load_ptr_acquire(volatile void* p) { return *(void* volatile *)p; } | |
71 inline void* OrderAccess::load_ptr_acquire(const volatile void* p) { return *(void* const volatile *)p; } | |
72 | |
73 inline void OrderAccess::release_store(volatile jbyte* p, jbyte v) { *p = v; } | |
74 inline void OrderAccess::release_store(volatile jshort* p, jshort v) { *p = v; } | |
75 inline void OrderAccess::release_store(volatile jint* p, jint v) { *p = v; } | |
76 inline void OrderAccess::release_store(volatile jlong* p, jlong v) { *p = v; } | |
77 inline void OrderAccess::release_store(volatile jubyte* p, jubyte v) { *p = v; } | |
78 inline void OrderAccess::release_store(volatile jushort* p, jushort v) { *p = v; } | |
79 inline void OrderAccess::release_store(volatile juint* p, juint v) { *p = v; } | |
80 inline void OrderAccess::release_store(volatile julong* p, julong v) { *p = v; } | |
81 inline void OrderAccess::release_store(volatile jfloat* p, jfloat v) { *p = v; } | |
82 inline void OrderAccess::release_store(volatile jdouble* p, jdouble v) { *p = v; } | |
83 | |
84 inline void OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { *p = v; } | |
85 inline void OrderAccess::release_store_ptr(volatile void* p, void* v) { *(void* volatile *)p = v; } | |
86 | |
87 inline void OrderAccess::store_fence(jbyte* p, jbyte v) { | |
88 __asm__ volatile ( "xchgb (%2),%0" | |
89 : "=r" (v) | |
90 : "0" (v), "r" (p) | |
91 : "memory"); | |
92 } | |
93 inline void OrderAccess::store_fence(jshort* p, jshort v) { | |
94 __asm__ volatile ( "xchgw (%2),%0" | |
95 : "=r" (v) | |
96 : "0" (v), "r" (p) | |
97 : "memory"); | |
98 } | |
99 inline void OrderAccess::store_fence(jint* p, jint v) { | |
100 __asm__ volatile ( "xchgl (%2),%0" | |
101 : "=r" (v) | |
102 : "0" (v), "r" (p) | |
103 : "memory"); | |
104 } | |
105 | |
106 inline void OrderAccess::store_fence(jlong* p, jlong v) { | |
107 #ifdef AMD64 | |
108 __asm__ __volatile__ ("xchgq (%2), %0" | |
109 : "=r" (v) | |
110 : "0" (v), "r" (p) | |
111 : "memory"); | |
112 #else | |
113 *p = v; fence(); | |
114 #endif // AMD64 | |
115 } | |
116 | |
117 // AMD64 copied the bodies for the the signed version. 32bit did this. As long as the | |
118 // compiler does the inlining this is simpler. | |
119 inline void OrderAccess::store_fence(jubyte* p, jubyte v) { store_fence((jbyte*)p, (jbyte)v); } | |
120 inline void OrderAccess::store_fence(jushort* p, jushort v) { store_fence((jshort*)p, (jshort)v); } | |
121 inline void OrderAccess::store_fence(juint* p, juint v) { store_fence((jint*)p, (jint)v); } | |
122 inline void OrderAccess::store_fence(julong* p, julong v) { store_fence((jlong*)p, (jlong)v); } | |
123 inline void OrderAccess::store_fence(jfloat* p, jfloat v) { *p = v; fence(); } | |
124 inline void OrderAccess::store_fence(jdouble* p, jdouble v) { *p = v; fence(); } | |
125 | |
126 inline void OrderAccess::store_ptr_fence(intptr_t* p, intptr_t v) { | |
127 #ifdef AMD64 | |
128 __asm__ __volatile__ ("xchgq (%2), %0" | |
129 : "=r" (v) | |
130 : "0" (v), "r" (p) | |
131 : "memory"); | |
132 #else | |
133 store_fence((jint*)p, (jint)v); | |
134 #endif // AMD64 | |
135 } | |
136 | |
137 inline void OrderAccess::store_ptr_fence(void** p, void* v) { | |
138 #ifdef AMD64 | |
139 __asm__ __volatile__ ("xchgq (%2), %0" | |
140 : "=r" (v) | |
141 : "0" (v), "r" (p) | |
142 : "memory"); | |
143 #else | |
144 store_fence((jint*)p, (jint)v); | |
145 #endif // AMD64 | |
146 } | |
147 | |
148 // Must duplicate definitions instead of calling store_fence because we don't want to cast away volatile. | |
149 inline void OrderAccess::release_store_fence(volatile jbyte* p, jbyte v) { | |
150 __asm__ volatile ( "xchgb (%2),%0" | |
151 : "=r" (v) | |
152 : "0" (v), "r" (p) | |
153 : "memory"); | |
154 } | |
155 inline void OrderAccess::release_store_fence(volatile jshort* p, jshort v) { | |
156 __asm__ volatile ( "xchgw (%2),%0" | |
157 : "=r" (v) | |
158 : "0" (v), "r" (p) | |
159 : "memory"); | |
160 } | |
161 inline void OrderAccess::release_store_fence(volatile jint* p, jint v) { | |
162 __asm__ volatile ( "xchgl (%2),%0" | |
163 : "=r" (v) | |
164 : "0" (v), "r" (p) | |
165 : "memory"); | |
166 } | |
167 | |
168 inline void OrderAccess::release_store_fence(volatile jlong* p, jlong v) { | |
169 #ifdef AMD64 | |
170 __asm__ __volatile__ ( "xchgq (%2), %0" | |
171 : "=r" (v) | |
172 : "0" (v), "r" (p) | |
173 : "memory"); | |
174 #else | |
175 *p = v; fence(); | |
176 #endif // AMD64 | |
177 } | |
178 | |
179 inline void OrderAccess::release_store_fence(volatile jubyte* p, jubyte v) { release_store_fence((volatile jbyte*)p, (jbyte)v); } | |
180 inline void OrderAccess::release_store_fence(volatile jushort* p, jushort v) { release_store_fence((volatile jshort*)p, (jshort)v); } | |
181 inline void OrderAccess::release_store_fence(volatile juint* p, juint v) { release_store_fence((volatile jint*)p, (jint)v); } | |
182 inline void OrderAccess::release_store_fence(volatile julong* p, julong v) { release_store_fence((volatile jlong*)p, (jlong)v); } | |
183 | |
184 inline void OrderAccess::release_store_fence(volatile jfloat* p, jfloat v) { *p = v; fence(); } | |
185 inline void OrderAccess::release_store_fence(volatile jdouble* p, jdouble v) { *p = v; fence(); } | |
186 | |
187 inline void OrderAccess::release_store_ptr_fence(volatile intptr_t* p, intptr_t v) { | |
188 #ifdef AMD64 | |
189 __asm__ __volatile__ ( "xchgq (%2), %0" | |
190 : "=r" (v) | |
191 : "0" (v), "r" (p) | |
192 : "memory"); | |
193 #else | |
194 release_store_fence((volatile jint*)p, (jint)v); | |
195 #endif // AMD64 | |
196 } | |
197 inline void OrderAccess::release_store_ptr_fence(volatile void* p, void* v) { | |
198 #ifdef AMD64 | |
199 __asm__ __volatile__ ( "xchgq (%2), %0" | |
200 : "=r" (v) | |
201 : "0" (v), "r" (p) | |
202 : "memory"); | |
203 #else | |
204 release_store_fence((volatile jint*)p, (jint)v); | |
205 #endif // AMD64 | |
206 } |