Mercurial > hg > truffle
annotate src/os_cpu/solaris_x86/vm/orderAccess_solaris_x86.inline.hpp @ 1638:b2a00dd3117c
6957084: simplify TaskQueue overflow handling
Reviewed-by: ysr, jmasa
author | jcoomes |
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date | Thu, 01 Jul 2010 21:40:45 -0700 |
parents | c18cbe5936b8 |
children | a6bff45449bc |
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0 | 1 /* |
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2 * Copyright (c) 2003, 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 | |
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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. | |
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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 // For Sun Studio - implementation is in solaris_i486.il. | |
28 // For gcc - implementation is just below. | |
29 extern "C" void _OrderAccess_acquire(); | |
30 extern "C" void _OrderAccess_fence(); | |
31 | |
32 inline void OrderAccess::loadload() { acquire(); } | |
33 inline void OrderAccess::storestore() { release(); } | |
34 inline void OrderAccess::loadstore() { acquire(); } | |
35 inline void OrderAccess::storeload() { fence(); } | |
36 | |
37 inline void OrderAccess::acquire() { | |
38 _OrderAccess_acquire(); | |
39 | |
40 } | |
41 | |
42 inline void OrderAccess::release() { | |
43 dummy = 0; | |
44 } | |
45 | |
46 inline void OrderAccess::fence() { | |
47 if (os::is_MP()) { | |
48 _OrderAccess_fence(); | |
49 } | |
50 } | |
51 | |
52 #ifdef _GNU_SOURCE | |
53 | |
54 extern "C" { | |
55 inline void _OrderAccess_acquire() { | |
56 volatile intptr_t dummy; | |
57 #ifdef AMD64 | |
58 __asm__ volatile ("movq 0(%%rsp), %0" : "=r" (dummy) : : "memory"); | |
59 #else | |
60 __asm__ volatile ("movl 0(%%esp),%0" : "=r" (dummy) : : "memory"); | |
61 #endif // AMD64 | |
62 } | |
63 inline void _OrderAccess_fence() { | |
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6822204: volatile fences should prefer lock:addl to actual mfence instructions
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64 // Always use locked addl since mfence is sometimes expensive |
0 | 65 __asm__ volatile ("lock; addl $0,0(%%esp)" : : : "cc", "memory"); |
66 } | |
67 | |
68 } | |
69 | |
70 #endif // GNU_SOURCE | |
71 | |
72 inline jbyte OrderAccess::load_acquire(volatile jbyte* p) { return *p; } | |
73 inline jshort OrderAccess::load_acquire(volatile jshort* p) { return *p; } | |
74 inline jint OrderAccess::load_acquire(volatile jint* p) { return *p; } | |
75 inline jlong OrderAccess::load_acquire(volatile jlong* p) { return *p; } | |
76 inline jubyte OrderAccess::load_acquire(volatile jubyte* p) { return *p; } | |
77 inline jushort OrderAccess::load_acquire(volatile jushort* p) { return *p; } | |
78 inline juint OrderAccess::load_acquire(volatile juint* p) { return *p; } | |
79 inline julong OrderAccess::load_acquire(volatile julong* p) { return *p; } | |
80 inline jfloat OrderAccess::load_acquire(volatile jfloat* p) { return *p; } | |
81 inline jdouble OrderAccess::load_acquire(volatile jdouble* p) { return *p; } | |
82 | |
83 inline intptr_t OrderAccess::load_ptr_acquire(volatile intptr_t* p) { return *p; } | |
84 inline void* OrderAccess::load_ptr_acquire(volatile void* p) { return *(void* volatile *)p; } | |
85 inline void* OrderAccess::load_ptr_acquire(const volatile void* p) { return *(void* const volatile *)p; } | |
86 | |
87 inline void OrderAccess::release_store(volatile jbyte* p, jbyte v) { *p = v; } | |
88 inline void OrderAccess::release_store(volatile jshort* p, jshort v) { *p = v; } | |
89 inline void OrderAccess::release_store(volatile jint* p, jint v) { *p = v; } | |
90 inline void OrderAccess::release_store(volatile jlong* p, jlong v) { *p = v; } | |
91 inline void OrderAccess::release_store(volatile jubyte* p, jubyte v) { *p = v; } | |
92 inline void OrderAccess::release_store(volatile jushort* p, jushort v) { *p = v; } | |
93 inline void OrderAccess::release_store(volatile juint* p, juint v) { *p = v; } | |
94 inline void OrderAccess::release_store(volatile julong* p, julong v) { *p = v; } | |
95 inline void OrderAccess::release_store(volatile jfloat* p, jfloat v) { *p = v; } | |
96 inline void OrderAccess::release_store(volatile jdouble* p, jdouble v) { *p = v; } | |
97 | |
98 inline void OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { *p = v; } | |
99 inline void OrderAccess::release_store_ptr(volatile void* p, void* v) { *(void* volatile *)p = v; } | |
100 | |
101 inline void OrderAccess::store_fence(jbyte* p, jbyte v) { *p = v; fence(); } | |
102 inline void OrderAccess::store_fence(jshort* p, jshort v) { *p = v; fence(); } | |
103 inline void OrderAccess::store_fence(jint* p, jint v) { *p = v; fence(); } | |
104 inline void OrderAccess::store_fence(jlong* p, jlong v) { *p = v; fence(); } | |
105 inline void OrderAccess::store_fence(jubyte* p, jubyte v) { *p = v; fence(); } | |
106 inline void OrderAccess::store_fence(jushort* p, jushort v) { *p = v; fence(); } | |
107 inline void OrderAccess::store_fence(juint* p, juint v) { *p = v; fence(); } | |
108 inline void OrderAccess::store_fence(julong* p, julong v) { *p = v; fence(); } | |
109 inline void OrderAccess::store_fence(jfloat* p, jfloat v) { *p = v; fence(); } | |
110 inline void OrderAccess::store_fence(jdouble* p, jdouble v) { *p = v; fence(); } | |
111 | |
112 inline void OrderAccess::store_ptr_fence(intptr_t* p, intptr_t v) { *p = v; fence(); } | |
113 inline void OrderAccess::store_ptr_fence(void** p, void* v) { *p = v; fence(); } | |
114 | |
115 inline void OrderAccess::release_store_fence(volatile jbyte* p, jbyte v) { *p = v; fence(); } | |
116 inline void OrderAccess::release_store_fence(volatile jshort* p, jshort v) { *p = v; fence(); } | |
117 inline void OrderAccess::release_store_fence(volatile jint* p, jint v) { *p = v; fence(); } | |
118 inline void OrderAccess::release_store_fence(volatile jlong* p, jlong v) { *p = v; fence(); } | |
119 inline void OrderAccess::release_store_fence(volatile jubyte* p, jubyte v) { *p = v; fence(); } | |
120 inline void OrderAccess::release_store_fence(volatile jushort* p, jushort v) { *p = v; fence(); } | |
121 inline void OrderAccess::release_store_fence(volatile juint* p, juint v) { *p = v; fence(); } | |
122 inline void OrderAccess::release_store_fence(volatile julong* p, julong v) { *p = v; fence(); } | |
123 inline void OrderAccess::release_store_fence(volatile jfloat* p, jfloat v) { *p = v; fence(); } | |
124 inline void OrderAccess::release_store_fence(volatile jdouble* p, jdouble v) { *p = v; fence(); } | |
125 | |
126 inline void OrderAccess::release_store_ptr_fence(volatile intptr_t* p, intptr_t v) { *p = v; fence(); } | |
127 inline void OrderAccess::release_store_ptr_fence(volatile void* p, void* v) { *(void* volatile *)p = v; fence(); } |