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src/os_cpu/linux_sparc/vm/orderAccess_linux_sparc.inline.hpp
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@@ -1,7 +1,7 @@
/*
- * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
@@ -27,83 +27,27 @@
#include "runtime/orderAccess.hpp"
// Implementation of class OrderAccess.
+// A compiler barrier, forcing the C++ compiler to invalidate all memory assumptions
+static inline void compiler_barrier() {
+ __asm__ volatile ("" : : : "memory");
+}
+
// Assume TSO.
-inline void OrderAccess::loadload() { acquire(); }
-inline void OrderAccess::storestore() { release(); }
-inline void OrderAccess::loadstore() { acquire(); }
+inline void OrderAccess::loadload() { compiler_barrier(); }
+inline void OrderAccess::storestore() { compiler_barrier(); }
+inline void OrderAccess::loadstore() { compiler_barrier(); }
inline void OrderAccess::storeload() { fence(); }
-inline void OrderAccess::acquire() {
- __asm__ volatile ("nop" : : :);
-}
-
-inline void OrderAccess::release() {
- jint* local_dummy = (jint*)&local_dummy;
- __asm__ volatile("stw %%g0, [%0]" : : "r" (local_dummy) : "memory");
-}
+inline void OrderAccess::acquire() { compiler_barrier(); }
+inline void OrderAccess::release() { compiler_barrier(); }
inline void OrderAccess::fence() {
- __asm__ volatile ("membar #StoreLoad" : : :);
+ __asm__ volatile ("membar #StoreLoad" : : : "memory");
}
-inline jbyte OrderAccess::load_acquire(volatile jbyte* p) { return *p; }
-inline jshort OrderAccess::load_acquire(volatile jshort* p) { return *p; }
-inline jint OrderAccess::load_acquire(volatile jint* p) { return *p; }
-inline jlong OrderAccess::load_acquire(volatile jlong* p) { return *p; }
-inline jubyte OrderAccess::load_acquire(volatile jubyte* p) { return *p; }
-inline jushort OrderAccess::load_acquire(volatile jushort* p) { return *p; }
-inline juint OrderAccess::load_acquire(volatile juint* p) { return *p; }
-inline julong OrderAccess::load_acquire(volatile julong* p) { return *p; }
-inline jfloat OrderAccess::load_acquire(volatile jfloat* p) { return *p; }
-inline jdouble OrderAccess::load_acquire(volatile jdouble* p) { return *p; }
-
-inline intptr_t OrderAccess::load_ptr_acquire(volatile intptr_t* p) { return *p; }
-inline void* OrderAccess::load_ptr_acquire(volatile void* p) { return *(void* volatile *)p; }
-inline void* OrderAccess::load_ptr_acquire(const volatile void* p) { return *(void* const volatile *)p; }
-
-inline void OrderAccess::release_store(volatile jbyte* p, jbyte v) { *p = v; }
-inline void OrderAccess::release_store(volatile jshort* p, jshort v) { *p = v; }
-inline void OrderAccess::release_store(volatile jint* p, jint v) { *p = v; }
-inline void OrderAccess::release_store(volatile jlong* p, jlong v) { *p = v; }
-inline void OrderAccess::release_store(volatile jubyte* p, jubyte v) { *p = v; }
-inline void OrderAccess::release_store(volatile jushort* p, jushort v) { *p = v; }
-inline void OrderAccess::release_store(volatile juint* p, juint v) { *p = v; }
-inline void OrderAccess::release_store(volatile julong* p, julong v) { *p = v; }
-inline void OrderAccess::release_store(volatile jfloat* p, jfloat v) { *p = v; }
-inline void OrderAccess::release_store(volatile jdouble* p, jdouble v) { *p = v; }
-
-inline void OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { *p = v; }
-inline void OrderAccess::release_store_ptr(volatile void* p, void* v) { *(void* volatile *)p = v; }
-
-inline void OrderAccess::store_fence(jbyte* p, jbyte v) { *p = v; fence(); }
-inline void OrderAccess::store_fence(jshort* p, jshort v) { *p = v; fence(); }
-inline void OrderAccess::store_fence(jint* p, jint v) { *p = v; fence(); }
-inline void OrderAccess::store_fence(jlong* p, jlong v) { *p = v; fence(); }
-inline void OrderAccess::store_fence(jubyte* p, jubyte v) { *p = v; fence(); }
-inline void OrderAccess::store_fence(jushort* p, jushort v) { *p = v; fence(); }
-inline void OrderAccess::store_fence(juint* p, juint v) { *p = v; fence(); }
-inline void OrderAccess::store_fence(julong* p, julong v) { *p = v; fence(); }
-inline void OrderAccess::store_fence(jfloat* p, jfloat v) { *p = v; fence(); }
-inline void OrderAccess::store_fence(jdouble* p, jdouble v) { *p = v; fence(); }
-
-inline void OrderAccess::store_ptr_fence(intptr_t* p, intptr_t v) { *p = v; fence(); }
-inline void OrderAccess::store_ptr_fence(void** p, void* v) { *p = v; fence(); }
-
-inline void OrderAccess::release_store_fence(volatile jbyte* p, jbyte v) { *p = v; fence(); }
-inline void OrderAccess::release_store_fence(volatile jshort* p, jshort v) { *p = v; fence(); }
-inline void OrderAccess::release_store_fence(volatile jint* p, jint v) { *p = v; fence(); }
-inline void OrderAccess::release_store_fence(volatile jlong* p, jlong v) { *p = v; fence(); }
-inline void OrderAccess::release_store_fence(volatile jubyte* p, jubyte v) { *p = v; fence(); }
-inline void OrderAccess::release_store_fence(volatile jushort* p, jushort v) { *p = v; fence(); }
-inline void OrderAccess::release_store_fence(volatile juint* p, juint v) { *p = v; fence(); }
-inline void OrderAccess::release_store_fence(volatile julong* p, julong v) { *p = v; fence(); }
-inline void OrderAccess::release_store_fence(volatile jfloat* p, jfloat v) { *p = v; fence(); }
-inline void OrderAccess::release_store_fence(volatile jdouble* p, jdouble v) { *p = v; fence(); }
-
-inline void OrderAccess::release_store_ptr_fence(volatile intptr_t* p, intptr_t v) { *p = v; fence(); }
-inline void OrderAccess::release_store_ptr_fence(volatile void* p, void* v) { *(void* volatile *)p = v; fence(); }
+#define VM_HAS_GENERALIZED_ORDER_ACCESS 1
#endif // OS_CPU_LINUX_SPARC_VM_ORDERACCESS_LINUX_SPARC_INLINE_HPP
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