Mercurial > jdk8-mips64-public > hotspot / annotate

src/os_cpu/linux_zero/vm/orderAccess_linux_zero.inline.hpp@126ea7725993 (annotated)

src/os_cpu/linux_zero/vm/orderAccess_linux_zero.inline.hpp

Tue, 03 Aug 2010 08:13:38 -0400

author
bobv
date
Tue, 03 Aug 2010 08:13:38 -0400
changeset 2036
126ea7725993
parent 1907
c18cbe5936b8
child 2314
f95d63e2154a
permissions
-rw-r--r--

6953477: Increase portability and flexibility of building Hotspot
Summary: A collection of portability improvements including shared code support for PPC, ARM platforms, software floating point, cross compilation support and improvements in error crash detail.
Reviewed-by: phh, never, coleenp, dholmes

never@1445 1 /*
trims@1907 2 * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
never@1445 3 * Copyright 2007, 2008, 2009 Red Hat, Inc.
never@1445 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
never@1445 5 *
never@1445 6 * This code is free software; you can redistribute it and/or modify it
never@1445 7 * under the terms of the GNU General Public License version 2 only, as
never@1445 8 * published by the Free Software Foundation.
never@1445 9 *
never@1445 10 * This code is distributed in the hope that it will be useful, but WITHOUT
never@1445 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
never@1445 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
never@1445 13 * version 2 for more details (a copy is included in the LICENSE file that
never@1445 14 * accompanied this code).
never@1445 15 *
never@1445 16 * You should have received a copy of the GNU General Public License version
never@1445 17 * 2 along with this work; if not, write to the Free Software Foundation,
never@1445 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
never@1445 19 *
trims@1907 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907 21 * or visit www.oracle.com if you need additional information or have any
trims@1907 22 * questions.
never@1445 23 *
never@1445 24 */
never@1445 25
never@1445 26 #ifdef ARM
never@1445 27
never@1445 28 /*
never@1445 29 * ARM Kernel helper for memory barrier.
never@1445 30 * Using __asm __volatile ("":::"memory") does not work reliable on ARM
never@1445 31 * and gcc __sync_synchronize(); implementation does not use the kernel
never@1445 32 * helper for all gcc versions so it is unreliable to use as well.
never@1445 33 */
never@1445 34 typedef void (__kernel_dmb_t) (void);
never@1445 35 #define __kernel_dmb (*(__kernel_dmb_t *) 0xffff0fa0)
never@1445 36
never@1445 37 #define FULL_MEM_BARRIER __kernel_dmb()
never@1445 38 #define READ_MEM_BARRIER __kernel_dmb()
never@1445 39 #define WRITE_MEM_BARRIER __kernel_dmb()
never@1445 40
never@1445 41 #else // ARM
never@1445 42
never@1445 43 #define FULL_MEM_BARRIER __sync_synchronize()
never@1445 44
never@1445 45 #ifdef PPC
never@1445 46
never@1445 47 #define READ_MEM_BARRIER __asm __volatile ("isync":::"memory")
never@1445 48 #ifdef __NO_LWSYNC__
never@1445 49 #define WRITE_MEM_BARRIER __asm __volatile ("sync":::"memory")
never@1445 50 #else
never@1445 51 #define WRITE_MEM_BARRIER __asm __volatile ("lwsync":::"memory")
never@1445 52 #endif
never@1445 53
never@1445 54 #else // PPC
never@1445 55
never@1445 56 #define READ_MEM_BARRIER __asm __volatile ("":::"memory")
never@1445 57 #define WRITE_MEM_BARRIER __asm __volatile ("":::"memory")
never@1445 58
never@1445 59 #endif // PPC
never@1445 60
never@1445 61 #endif // ARM
never@1445 62
never@1445 63
never@1445 64 inline void OrderAccess::loadload() { acquire(); }
never@1445 65 inline void OrderAccess::storestore() { release(); }
never@1445 66 inline void OrderAccess::loadstore() { acquire(); }
never@1445 67 inline void OrderAccess::storeload() { fence(); }
never@1445 68
never@1445 69 inline void OrderAccess::acquire() {
never@1445 70 READ_MEM_BARRIER;
never@1445 71 }
never@1445 72
never@1445 73 inline void OrderAccess::release() {
never@1445 74 WRITE_MEM_BARRIER;
never@1445 75 }
never@1445 76
never@1445 77 inline void OrderAccess::fence() {
never@1445 78 FULL_MEM_BARRIER;
never@1445 79 }
never@1445 80
never@1445 81 inline jbyte OrderAccess::load_acquire(volatile jbyte* p) { jbyte data = *p; acquire(); return data; }
never@1445 82 inline jshort OrderAccess::load_acquire(volatile jshort* p) { jshort data = *p; acquire(); return data; }
never@1445 83 inline jint OrderAccess::load_acquire(volatile jint* p) { jint data = *p; acquire(); return data; }
never@1445 84 inline jlong OrderAccess::load_acquire(volatile jlong* p) {
never@1445 85 jlong tmp;
never@1445 86 os::atomic_copy64(p, &tmp);
never@1445 87 acquire();
never@1445 88 return tmp;
never@1445 89 }
never@1445 90 inline jubyte OrderAccess::load_acquire(volatile jubyte* p) { jubyte data = *p; acquire(); return data; }
never@1445 91 inline jushort OrderAccess::load_acquire(volatile jushort* p) { jushort data = *p; acquire(); return data; }
never@1445 92 inline juint OrderAccess::load_acquire(volatile juint* p) { juint data = *p; acquire(); return data; }
never@1445 93 inline julong OrderAccess::load_acquire(volatile julong* p) {
never@1445 94 julong tmp;
never@1445 95 os::atomic_copy64(p, &tmp);
never@1445 96 acquire();
never@1445 97 return tmp;
never@1445 98 }
never@1445 99 inline jfloat OrderAccess::load_acquire(volatile jfloat* p) { jfloat data = *p; acquire(); return data; }
never@1445 100 inline jdouble OrderAccess::load_acquire(volatile jdouble* p) {
never@1445 101 jdouble tmp;
never@1445 102 os::atomic_copy64(p, &tmp);
never@1445 103 acquire();
never@1445 104 return tmp;
never@1445 105 }
never@1445 106
never@1445 107 inline intptr_t OrderAccess::load_ptr_acquire(volatile intptr_t* p) {
never@1445 108 intptr_t data = *p;
never@1445 109 acquire();
never@1445 110 return data;
never@1445 111 }
never@1445 112 inline void* OrderAccess::load_ptr_acquire(volatile void* p) {
never@1445 113 void *data = *(void* volatile *)p;
never@1445 114 acquire();
never@1445 115 return data;
never@1445 116 }
never@1445 117 inline void* OrderAccess::load_ptr_acquire(const volatile void* p) {
never@1445 118 void *data = *(void* const volatile *)p;
never@1445 119 acquire();
never@1445 120 return data;
never@1445 121 }
never@1445 122
never@1445 123 inline void OrderAccess::release_store(volatile jbyte* p, jbyte v) { release(); *p = v; }
never@1445 124 inline void OrderAccess::release_store(volatile jshort* p, jshort v) { release(); *p = v; }
never@1445 125 inline void OrderAccess::release_store(volatile jint* p, jint v) { release(); *p = v; }
never@1445 126 inline void OrderAccess::release_store(volatile jlong* p, jlong v)
never@1445 127 { release(); os::atomic_copy64(&v, p); }
never@1445 128 inline void OrderAccess::release_store(volatile jubyte* p, jubyte v) { release(); *p = v; }
never@1445 129 inline void OrderAccess::release_store(volatile jushort* p, jushort v) { release(); *p = v; }
never@1445 130 inline void OrderAccess::release_store(volatile juint* p, juint v) { release(); *p = v; }
never@1445 131 inline void OrderAccess::release_store(volatile julong* p, julong v)
never@1445 132 { release(); os::atomic_copy64(&v, p); }
never@1445 133 inline void OrderAccess::release_store(volatile jfloat* p, jfloat v) { release(); *p = v; }
never@1445 134 inline void OrderAccess::release_store(volatile jdouble* p, jdouble v)
never@1445 135 { release(); os::atomic_copy64(&v, p); }
never@1445 136
never@1445 137 inline void OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { release(); *p = v; }
never@1445 138 inline void OrderAccess::release_store_ptr(volatile void* p, void* v)
never@1445 139 { release(); *(void* volatile *)p = v; }
never@1445 140
never@1445 141 inline void OrderAccess::store_fence(jbyte* p, jbyte v) { *p = v; fence(); }
never@1445 142 inline void OrderAccess::store_fence(jshort* p, jshort v) { *p = v; fence(); }
never@1445 143 inline void OrderAccess::store_fence(jint* p, jint v) { *p = v; fence(); }
never@1445 144 inline void OrderAccess::store_fence(jlong* p, jlong v) { os::atomic_copy64(&v, p); fence(); }
never@1445 145 inline void OrderAccess::store_fence(jubyte* p, jubyte v) { *p = v; fence(); }
never@1445 146 inline void OrderAccess::store_fence(jushort* p, jushort v) { *p = v; fence(); }
never@1445 147 inline void OrderAccess::store_fence(juint* p, juint v) { *p = v; fence(); }
never@1445 148 inline void OrderAccess::store_fence(julong* p, julong v) { os::atomic_copy64(&v, p); fence(); }
never@1445 149 inline void OrderAccess::store_fence(jfloat* p, jfloat v) { *p = v; fence(); }
never@1445 150 inline void OrderAccess::store_fence(jdouble* p, jdouble v) { os::atomic_copy64(&v, p); fence(); }
never@1445 151
never@1445 152 inline void OrderAccess::store_ptr_fence(intptr_t* p, intptr_t v) { *p = v; fence(); }
never@1445 153 inline void OrderAccess::store_ptr_fence(void** p, void* v) { *p = v; fence(); }
never@1445 154
never@1445 155 inline void OrderAccess::release_store_fence(volatile jbyte* p, jbyte v) { release_store(p, v); fence(); }
never@1445 156 inline void OrderAccess::release_store_fence(volatile jshort* p, jshort v) { release_store(p, v); fence(); }
never@1445 157 inline void OrderAccess::release_store_fence(volatile jint* p, jint v) { release_store(p, v); fence(); }
never@1445 158 inline void OrderAccess::release_store_fence(volatile jlong* p, jlong v) { release_store(p, v); fence(); }
never@1445 159 inline void OrderAccess::release_store_fence(volatile jubyte* p, jubyte v) { release_store(p, v); fence(); }
never@1445 160 inline void OrderAccess::release_store_fence(volatile jushort* p, jushort v) { release_store(p, v); fence(); }
never@1445 161 inline void OrderAccess::release_store_fence(volatile juint* p, juint v) { release_store(p, v); fence(); }
never@1445 162 inline void OrderAccess::release_store_fence(volatile julong* p, julong v) { release_store(p, v); fence(); }
never@1445 163 inline void OrderAccess::release_store_fence(volatile jfloat* p, jfloat v) { release_store(p, v); fence(); }
never@1445 164 inline void OrderAccess::release_store_fence(volatile jdouble* p, jdouble v) { release_store(p, v); fence(); }
never@1445 165
never@1445 166 inline void OrderAccess::release_store_ptr_fence(volatile intptr_t* p, intptr_t v) { release_store_ptr(p, v); fence(); }
never@1445 167 inline void OrderAccess::release_store_ptr_fence(volatile void* p, void* v) { release_store_ptr(p, v); fence(); }

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