author | trims |
Thu, 27 May 2010 19:08:38 -0700 | |
changeset 5547 | f4b087cbb361 |
parent 4013 | b154310845de |
child 7397 | 5b173b4ca846 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved. |
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* Copyright 2007, 2008, 2009 Red Hat, Inc. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#ifdef ARM |
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/* |
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* ARM Kernel helper for memory barrier. |
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* Using __asm __volatile ("":::"memory") does not work reliable on ARM |
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* and gcc __sync_synchronize(); implementation does not use the kernel |
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* helper for all gcc versions so it is unreliable to use as well. |
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*/ |
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typedef void (__kernel_dmb_t) (void); |
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#define __kernel_dmb (*(__kernel_dmb_t *) 0xffff0fa0) |
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#define FULL_MEM_BARRIER __kernel_dmb() |
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#define READ_MEM_BARRIER __kernel_dmb() |
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#define WRITE_MEM_BARRIER __kernel_dmb() |
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#else // ARM |
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#define FULL_MEM_BARRIER __sync_synchronize() |
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#ifdef PPC |
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#define READ_MEM_BARRIER __asm __volatile ("isync":::"memory") |
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#ifdef __NO_LWSYNC__ |
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#define WRITE_MEM_BARRIER __asm __volatile ("sync":::"memory") |
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#else |
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#define WRITE_MEM_BARRIER __asm __volatile ("lwsync":::"memory") |
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#endif |
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#else // PPC |
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#define READ_MEM_BARRIER __asm __volatile ("":::"memory") |
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#define WRITE_MEM_BARRIER __asm __volatile ("":::"memory") |
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#endif // PPC |
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#endif // ARM |
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inline void OrderAccess::loadload() { acquire(); } |
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inline void OrderAccess::storestore() { release(); } |
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inline void OrderAccess::loadstore() { acquire(); } |
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inline void OrderAccess::storeload() { fence(); } |
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inline void OrderAccess::acquire() { |
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READ_MEM_BARRIER; |
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} |
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inline void OrderAccess::release() { |
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WRITE_MEM_BARRIER; |
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} |
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inline void OrderAccess::fence() { |
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FULL_MEM_BARRIER; |
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} |
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inline jbyte OrderAccess::load_acquire(volatile jbyte* p) { jbyte data = *p; acquire(); return data; } |
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inline jshort OrderAccess::load_acquire(volatile jshort* p) { jshort data = *p; acquire(); return data; } |
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inline jint OrderAccess::load_acquire(volatile jint* p) { jint data = *p; acquire(); return data; } |
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inline jlong OrderAccess::load_acquire(volatile jlong* p) { |
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jlong tmp; |
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os::atomic_copy64(p, &tmp); |
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acquire(); |
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return tmp; |
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} |
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inline jubyte OrderAccess::load_acquire(volatile jubyte* p) { jubyte data = *p; acquire(); return data; } |
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inline jushort OrderAccess::load_acquire(volatile jushort* p) { jushort data = *p; acquire(); return data; } |
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inline juint OrderAccess::load_acquire(volatile juint* p) { juint data = *p; acquire(); return data; } |
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inline julong OrderAccess::load_acquire(volatile julong* p) { |
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julong tmp; |
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os::atomic_copy64(p, &tmp); |
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acquire(); |
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return tmp; |
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} |
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inline jfloat OrderAccess::load_acquire(volatile jfloat* p) { jfloat data = *p; acquire(); return data; } |
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inline jdouble OrderAccess::load_acquire(volatile jdouble* p) { |
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jdouble tmp; |
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os::atomic_copy64(p, &tmp); |
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acquire(); |
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return tmp; |
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} |
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inline intptr_t OrderAccess::load_ptr_acquire(volatile intptr_t* p) { |
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intptr_t data = *p; |
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acquire(); |
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return data; |
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} |
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inline void* OrderAccess::load_ptr_acquire(volatile void* p) { |
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void *data = *(void* volatile *)p; |
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acquire(); |
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return data; |
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} |
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inline void* OrderAccess::load_ptr_acquire(const volatile void* p) { |
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void *data = *(void* const volatile *)p; |
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acquire(); |
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return data; |
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} |
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inline void OrderAccess::release_store(volatile jbyte* p, jbyte v) { release(); *p = v; } |
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inline void OrderAccess::release_store(volatile jshort* p, jshort v) { release(); *p = v; } |
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inline void OrderAccess::release_store(volatile jint* p, jint v) { release(); *p = v; } |
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inline void OrderAccess::release_store(volatile jlong* p, jlong v) |
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{ release(); os::atomic_copy64(&v, p); } |
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inline void OrderAccess::release_store(volatile jubyte* p, jubyte v) { release(); *p = v; } |
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inline void OrderAccess::release_store(volatile jushort* p, jushort v) { release(); *p = v; } |
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inline void OrderAccess::release_store(volatile juint* p, juint v) { release(); *p = v; } |
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inline void OrderAccess::release_store(volatile julong* p, julong v) |
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{ release(); os::atomic_copy64(&v, p); } |
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inline void OrderAccess::release_store(volatile jfloat* p, jfloat v) { release(); *p = v; } |
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inline void OrderAccess::release_store(volatile jdouble* p, jdouble v) |
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{ release(); os::atomic_copy64(&v, p); } |
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inline void OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { release(); *p = v; } |
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inline void OrderAccess::release_store_ptr(volatile void* p, void* v) |
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{ release(); *(void* volatile *)p = v; } |
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inline void OrderAccess::store_fence(jbyte* p, jbyte v) { *p = v; fence(); } |
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inline void OrderAccess::store_fence(jshort* p, jshort v) { *p = v; fence(); } |
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inline void OrderAccess::store_fence(jint* p, jint v) { *p = v; fence(); } |
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inline void OrderAccess::store_fence(jlong* p, jlong v) { os::atomic_copy64(&v, p); fence(); } |
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inline void OrderAccess::store_fence(jubyte* p, jubyte v) { *p = v; fence(); } |
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inline void OrderAccess::store_fence(jushort* p, jushort v) { *p = v; fence(); } |
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inline void OrderAccess::store_fence(juint* p, juint v) { *p = v; fence(); } |
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inline void OrderAccess::store_fence(julong* p, julong v) { os::atomic_copy64(&v, p); fence(); } |
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inline void OrderAccess::store_fence(jfloat* p, jfloat v) { *p = v; fence(); } |
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inline void OrderAccess::store_fence(jdouble* p, jdouble v) { os::atomic_copy64(&v, p); fence(); } |
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inline void OrderAccess::store_ptr_fence(intptr_t* p, intptr_t v) { *p = v; fence(); } |
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inline void OrderAccess::store_ptr_fence(void** p, void* v) { *p = v; fence(); } |
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inline void OrderAccess::release_store_fence(volatile jbyte* p, jbyte v) { release_store(p, v); fence(); } |
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inline void OrderAccess::release_store_fence(volatile jshort* p, jshort v) { release_store(p, v); fence(); } |
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inline void OrderAccess::release_store_fence(volatile jint* p, jint v) { release_store(p, v); fence(); } |
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inline void OrderAccess::release_store_fence(volatile jlong* p, jlong v) { release_store(p, v); fence(); } |
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inline void OrderAccess::release_store_fence(volatile jubyte* p, jubyte v) { release_store(p, v); fence(); } |
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inline void OrderAccess::release_store_fence(volatile jushort* p, jushort v) { release_store(p, v); fence(); } |
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inline void OrderAccess::release_store_fence(volatile juint* p, juint v) { release_store(p, v); fence(); } |
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inline void OrderAccess::release_store_fence(volatile julong* p, julong v) { release_store(p, v); fence(); } |
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inline void OrderAccess::release_store_fence(volatile jfloat* p, jfloat v) { release_store(p, v); fence(); } |
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inline void OrderAccess::release_store_fence(volatile jdouble* p, jdouble v) { release_store(p, v); fence(); } |
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inline void OrderAccess::release_store_ptr_fence(volatile intptr_t* p, intptr_t v) { release_store_ptr(p, v); fence(); } |
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inline void OrderAccess::release_store_ptr_fence(volatile void* p, void* v) { release_store_ptr(p, v); fence(); } |