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src/os_cpu/linux_zero/vm/orderAccess_linux_zero.inline.hpp@c18cbe5936b8

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

Thu, 27 May 2010 19:08:38 -0700

author
trims
date
Thu, 27 May 2010 19:08:38 -0700
changeset 1907
c18cbe5936b8
parent 1445
354d3184f6b2
child 2314
f95d63e2154a
permissions
-rw-r--r--

6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair

     1 /*

     2  * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright 2007, 2008, 2009 Red Hat, Inc.

     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 #ifdef ARM

    27 

    28 /*

    29  * ARM Kernel helper for memory barrier.

    30  * Using __asm __volatile ("":::"memory") does not work reliable on ARM

    31  * and gcc __sync_synchronize(); implementation does not use the kernel

    32  * helper for all gcc versions so it is unreliable to use as well.

    33  */

    34 typedef void (__kernel_dmb_t) (void);

    35 #define __kernel_dmb (*(__kernel_dmb_t *) 0xffff0fa0)

    36 

    37 #define FULL_MEM_BARRIER __kernel_dmb()

    38 #define READ_MEM_BARRIER __kernel_dmb()

    39 #define WRITE_MEM_BARRIER __kernel_dmb()

    40 

    41 #else // ARM

    42 

    43 #define FULL_MEM_BARRIER __sync_synchronize()

    44 

    45 #ifdef PPC

    46 

    47 #define READ_MEM_BARRIER __asm __volatile ("isync":::"memory")

    48 #ifdef __NO_LWSYNC__

    49 #define WRITE_MEM_BARRIER __asm __volatile ("sync":::"memory")

    50 #else

    51 #define WRITE_MEM_BARRIER __asm __volatile ("lwsync":::"memory")

    52 #endif

    53 

    54 #else // PPC

    55 

    56 #define READ_MEM_BARRIER __asm __volatile ("":::"memory")

    57 #define WRITE_MEM_BARRIER __asm __volatile ("":::"memory")

    58 

    59 #endif // PPC

    60 

    61 #endif // ARM

    62 

    63 

    64 inline void OrderAccess::loadload()   { acquire(); }

    65 inline void OrderAccess::storestore() { release(); }

    66 inline void OrderAccess::loadstore()  { acquire(); }

    67 inline void OrderAccess::storeload()  { fence(); }

    68 

    69 inline void OrderAccess::acquire() {

    70   READ_MEM_BARRIER;

    71 }

    72 

    73 inline void OrderAccess::release() {

    74   WRITE_MEM_BARRIER;

    75 }

    76 

    77 inline void OrderAccess::fence() {

    78   FULL_MEM_BARRIER;

    79 }

    80 

    81 inline jbyte    OrderAccess::load_acquire(volatile jbyte*   p) { jbyte data = *p; acquire(); return data; }

    82 inline jshort   OrderAccess::load_acquire(volatile jshort*  p) { jshort data = *p; acquire(); return data; }

    83 inline jint     OrderAccess::load_acquire(volatile jint*    p) { jint data = *p; acquire(); return data; }

    84 inline jlong    OrderAccess::load_acquire(volatile jlong*   p) {

    85   jlong tmp;

    86   os::atomic_copy64(p, &tmp);

    87   acquire();

    88   return tmp;

    89 }

    90 inline jubyte    OrderAccess::load_acquire(volatile jubyte*   p) { jubyte data = *p; acquire(); return data; }

    91 inline jushort   OrderAccess::load_acquire(volatile jushort*  p) { jushort data = *p; acquire(); return data; }

    92 inline juint     OrderAccess::load_acquire(volatile juint*    p) { juint data = *p; acquire(); return data; }

    93 inline julong   OrderAccess::load_acquire(volatile julong*  p) {

    94   julong tmp;

    95   os::atomic_copy64(p, &tmp);

    96   acquire();

    97   return tmp;

    98 }

    99 inline jfloat   OrderAccess::load_acquire(volatile jfloat*  p) { jfloat data = *p; acquire(); return data; }

   100 inline jdouble  OrderAccess::load_acquire(volatile jdouble* p) {

   101   jdouble tmp;

   102   os::atomic_copy64(p, &tmp);

   103   acquire();

   104   return tmp;

   105 }

   106 

   107 inline intptr_t OrderAccess::load_ptr_acquire(volatile intptr_t*   p) {

   108   intptr_t data = *p;

   109   acquire();

   110   return data;

   111 }

   112 inline void*    OrderAccess::load_ptr_acquire(volatile void*       p) {

   113   void *data = *(void* volatile *)p;

   114   acquire();

   115   return data;

   116 }

   117 inline void*    OrderAccess::load_ptr_acquire(const volatile void* p) {

   118   void *data = *(void* const volatile *)p;

   119   acquire();

   120   return data;

   121 }

   122 

   123 inline void     OrderAccess::release_store(volatile jbyte*   p, jbyte   v) { release(); *p = v; }

   124 inline void     OrderAccess::release_store(volatile jshort*  p, jshort  v) { release(); *p = v; }

   125 inline void     OrderAccess::release_store(volatile jint*    p, jint    v) { release(); *p = v; }

   126 inline void     OrderAccess::release_store(volatile jlong*   p, jlong   v)

   127 { release(); os::atomic_copy64(&v, p); }

   128 inline void     OrderAccess::release_store(volatile jubyte*  p, jubyte  v) { release(); *p = v; }

   129 inline void     OrderAccess::release_store(volatile jushort* p, jushort v) { release(); *p = v; }

   130 inline void     OrderAccess::release_store(volatile juint*   p, juint   v) { release(); *p = v; }

   131 inline void     OrderAccess::release_store(volatile julong*  p, julong  v)

   132 { release(); os::atomic_copy64(&v, p); }

   133 inline void     OrderAccess::release_store(volatile jfloat*  p, jfloat  v) { release(); *p = v; }

   134 inline void     OrderAccess::release_store(volatile jdouble* p, jdouble v)

   135 { release(); os::atomic_copy64(&v, p); }

   136 

   137 inline void     OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { release(); *p = v; }

   138 inline void     OrderAccess::release_store_ptr(volatile void*     p, void*    v)

   139 { release(); *(void* volatile *)p = v; }

   140 

   141 inline void     OrderAccess::store_fence(jbyte*   p, jbyte   v) { *p = v; fence(); }

   142 inline void     OrderAccess::store_fence(jshort*  p, jshort  v) { *p = v; fence(); }

   143 inline void     OrderAccess::store_fence(jint*    p, jint    v) { *p = v; fence(); }

   144 inline void     OrderAccess::store_fence(jlong*   p, jlong   v) { os::atomic_copy64(&v, p); fence(); }

   145 inline void     OrderAccess::store_fence(jubyte*  p, jubyte  v) { *p = v; fence(); }

   146 inline void     OrderAccess::store_fence(jushort* p, jushort v) { *p = v; fence(); }

   147 inline void     OrderAccess::store_fence(juint*   p, juint   v) { *p = v; fence(); }

   148 inline void     OrderAccess::store_fence(julong*  p, julong  v) { os::atomic_copy64(&v, p); fence(); }

   149 inline void     OrderAccess::store_fence(jfloat*  p, jfloat  v) { *p = v; fence(); }

   150 inline void     OrderAccess::store_fence(jdouble* p, jdouble v) { os::atomic_copy64(&v, p); fence(); }

   151 

   152 inline void     OrderAccess::store_ptr_fence(intptr_t* p, intptr_t v) { *p = v; fence(); }

   153 inline void     OrderAccess::store_ptr_fence(void**    p, void*    v) { *p = v; fence(); }

   154 

   155 inline void     OrderAccess::release_store_fence(volatile jbyte*   p, jbyte   v) { release_store(p, v); fence(); }

   156 inline void     OrderAccess::release_store_fence(volatile jshort*  p, jshort  v) { release_store(p, v); fence(); }

   157 inline void     OrderAccess::release_store_fence(volatile jint*    p, jint    v) { release_store(p, v); fence(); }

   158 inline void     OrderAccess::release_store_fence(volatile jlong*   p, jlong   v) { release_store(p, v); fence(); }

   159 inline void     OrderAccess::release_store_fence(volatile jubyte*  p, jubyte  v) { release_store(p, v); fence(); }

   160 inline void     OrderAccess::release_store_fence(volatile jushort* p, jushort v) { release_store(p, v); fence(); }

   161 inline void     OrderAccess::release_store_fence(volatile juint*   p, juint   v) { release_store(p, v); fence(); }

   162 inline void     OrderAccess::release_store_fence(volatile julong*  p, julong  v) { release_store(p, v); fence(); }

   163 inline void     OrderAccess::release_store_fence(volatile jfloat*  p, jfloat  v) { release_store(p, v); fence(); }

   164 inline void     OrderAccess::release_store_fence(volatile jdouble* p, jdouble v) { release_store(p, v); fence(); }

   165 

   166 inline void     OrderAccess::release_store_ptr_fence(volatile intptr_t* p, intptr_t v) { release_store_ptr(p, v); fence(); }

   167 inline void     OrderAccess::release_store_ptr_fence(volatile void*     p, void*    v) { release_store_ptr(p, v); fence(); }

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