1 /*
2 * Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2014, 2016 SAP SE. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #ifndef SHARE_VM_RUNTIME_ORDERACCESS_INLINE_HPP
27 #define SHARE_VM_RUNTIME_ORDERACCESS_INLINE_HPP
28
29 #include "runtime/atomic.hpp"
30 #include "runtime/orderAccess.hpp"
31 #include "utilities/macros.hpp"
32
33 #include OS_CPU_HEADER_INLINE(orderAccess)
34
35 #ifdef VM_HAS_GENERALIZED_ORDER_ACCESS
36
37 template<> inline void ScopedFenceGeneral<X_ACQUIRE>::postfix() { OrderAccess::acquire(); }
38 template<> inline void ScopedFenceGeneral<RELEASE_X>::prefix() { OrderAccess::release(); }
39 template<> inline void ScopedFenceGeneral<RELEASE_X_FENCE>::prefix() { OrderAccess::release(); }
40 template<> inline void ScopedFenceGeneral<RELEASE_X_FENCE>::postfix() { OrderAccess::fence(); }
41
42
43 template <typename FieldType, ScopedFenceType FenceType>
44 inline void OrderAccess::ordered_store(volatile FieldType* p, FieldType v) {
45 ScopedFence<FenceType> f((void*)p);
46 store(p, v);
47 }
48
49 template <typename FieldType, ScopedFenceType FenceType>
50 inline FieldType OrderAccess::ordered_load(const volatile FieldType* p) {
51 ScopedFence<FenceType> f((void*)p);
52 return load(p);
53 }
54
55 inline jbyte OrderAccess::load_acquire(const volatile jbyte* p) { return specialized_load_acquire(p); }
56 inline jshort OrderAccess::load_acquire(const volatile jshort* p) { return specialized_load_acquire(p); }
57 inline jint OrderAccess::load_acquire(const volatile jint* p) { return specialized_load_acquire(p); }
58 inline jlong OrderAccess::load_acquire(const volatile jlong* p) { return specialized_load_acquire(p); }
59 inline jfloat OrderAccess::load_acquire(const volatile jfloat* p) { return specialized_load_acquire(p); }
60 inline jdouble OrderAccess::load_acquire(const volatile jdouble* p) { return specialized_load_acquire(p); }
61 inline jubyte OrderAccess::load_acquire(const volatile jubyte* p) { return (jubyte) specialized_load_acquire((const volatile jbyte*)p); }
62 inline jushort OrderAccess::load_acquire(const volatile jushort* p) { return (jushort)specialized_load_acquire((const volatile jshort*)p); }
63 inline juint OrderAccess::load_acquire(const volatile juint* p) { return (juint) specialized_load_acquire((const volatile jint*)p); }
64 inline julong OrderAccess::load_acquire(const volatile julong* p) { return (julong) specialized_load_acquire((const volatile jlong*)p); }
65
66 inline intptr_t OrderAccess::load_ptr_acquire(const volatile intptr_t* p) { return (intptr_t)specialized_load_acquire(p); }
67 inline void* OrderAccess::load_ptr_acquire(const volatile void* p) { return (void*)specialized_load_acquire((const volatile intptr_t*)p); }
68
69 inline void OrderAccess::release_store(volatile jbyte* p, jbyte v) { specialized_release_store(p, v); }
70 inline void OrderAccess::release_store(volatile jshort* p, jshort v) { specialized_release_store(p, v); }
71 inline void OrderAccess::release_store(volatile jint* p, jint v) { specialized_release_store(p, v); }
72 inline void OrderAccess::release_store(volatile jlong* p, jlong v) { specialized_release_store(p, v); }
73 inline void OrderAccess::release_store(volatile jfloat* p, jfloat v) { specialized_release_store(p, v); }
74 inline void OrderAccess::release_store(volatile jdouble* p, jdouble v) { specialized_release_store(p, v); }
75 inline void OrderAccess::release_store(volatile jubyte* p, jubyte v) { specialized_release_store((volatile jbyte*) p, (jbyte) v); }
76 inline void OrderAccess::release_store(volatile jushort* p, jushort v) { specialized_release_store((volatile jshort*)p, (jshort)v); }
77 inline void OrderAccess::release_store(volatile juint* p, juint v) { specialized_release_store((volatile jint*) p, (jint) v); }
78 inline void OrderAccess::release_store(volatile julong* p, julong v) { specialized_release_store((volatile jlong*) p, (jlong) v); }
79
80 inline void OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { specialized_release_store(p, v); }
81 inline void OrderAccess::release_store_ptr(volatile void* p, void* v) { specialized_release_store((volatile intptr_t*)p, (intptr_t)v); }
82
83 inline void OrderAccess::release_store_fence(volatile jbyte* p, jbyte v) { specialized_release_store_fence(p, v); }
84 inline void OrderAccess::release_store_fence(volatile jshort* p, jshort v) { specialized_release_store_fence(p, v); }
85 inline void OrderAccess::release_store_fence(volatile jint* p, jint v) { specialized_release_store_fence(p, v); }
86 inline void OrderAccess::release_store_fence(volatile jlong* p, jlong v) { specialized_release_store_fence(p, v); }
87 inline void OrderAccess::release_store_fence(volatile jfloat* p, jfloat v) { specialized_release_store_fence(p, v); }
88 inline void OrderAccess::release_store_fence(volatile jdouble* p, jdouble v) { specialized_release_store_fence(p, v); }
89 inline void OrderAccess::release_store_fence(volatile jubyte* p, jubyte v) { specialized_release_store_fence((volatile jbyte*) p, (jbyte) v); }
90 inline void OrderAccess::release_store_fence(volatile jushort* p, jushort v) { specialized_release_store_fence((volatile jshort*)p, (jshort)v); }
91 inline void OrderAccess::release_store_fence(volatile juint* p, juint v) { specialized_release_store_fence((volatile jint*) p, (jint) v); }
92 inline void OrderAccess::release_store_fence(volatile julong* p, julong v) { specialized_release_store_fence((volatile jlong*) p, (jlong) v); }
93
94 inline void OrderAccess::release_store_ptr_fence(volatile intptr_t* p, intptr_t v) { specialized_release_store_fence(p, v); }
95 inline void OrderAccess::release_store_ptr_fence(volatile void* p, void* v) { specialized_release_store_fence((volatile intptr_t*)p, (intptr_t)v); }
96
97 // The following methods can be specialized using simple template specialization
98 // in the platform specific files for optimization purposes. Otherwise the
99 // generalized variant is used.
100 template<typename T> inline T OrderAccess::specialized_load_acquire (const volatile T* p) { return ordered_load<T, X_ACQUIRE>(p); }
101 template<typename T> inline void OrderAccess::specialized_release_store (volatile T* p, T v) { ordered_store<T, RELEASE_X>(p, v); }
102 template<typename T> inline void OrderAccess::specialized_release_store_fence(volatile T* p, T v) { ordered_store<T, RELEASE_X_FENCE>(p, v); }
103
104 // Generalized atomic volatile accesses valid in OrderAccess
105 // All other types can be expressed in terms of these.
106 inline void OrderAccess::store(volatile jbyte* p, jbyte v) { *p = v; }
107 inline void OrderAccess::store(volatile jshort* p, jshort v) { *p = v; }
108 inline void OrderAccess::store(volatile jint* p, jint v) { *p = v; }
109 inline void OrderAccess::store(volatile jlong* p, jlong v) { Atomic::store(v, p); }
110 inline void OrderAccess::store(volatile jdouble* p, jdouble v) { Atomic::store(jlong_cast(v), (volatile jlong*)p); }
111 inline void OrderAccess::store(volatile jfloat* p, jfloat v) { *p = v; }
112
113 inline jbyte OrderAccess::load(const volatile jbyte* p) { return *p; }
114 inline jshort OrderAccess::load(const volatile jshort* p) { return *p; }
115 inline jint OrderAccess::load(const volatile jint* p) { return *p; }
116 inline jlong OrderAccess::load(const volatile jlong* p) { return Atomic::load(p); }
117 inline jdouble OrderAccess::load(const volatile jdouble* p) { return jdouble_cast(Atomic::load((const volatile jlong*)p)); }
118 inline jfloat OrderAccess::load(const volatile jfloat* p) { return *p; }
119
120 #endif // VM_HAS_GENERALIZED_ORDER_ACCESS
121
122 #endif // SHARE_VM_RUNTIME_ORDERACCESS_INLINE_HPP