src/hotspot/os_cpu/solaris_sparc/orderAccess_solaris_sparc.hpp
author darcy
Tue, 12 Nov 2019 10:45:23 -0800
changeset 59037 3d2575331a41
parent 54323 846bc643f4ef
permissions -rw-r--r--
8233940: Preview API tests for String methods should use ${jdk.version} as -source arg Reviewed-by: jlaskey, jlahoda

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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#ifndef OS_CPU_SOLARIS_SPARC_ORDERACCESS_SOLARIS_SPARC_HPP
#define OS_CPU_SOLARIS_SPARC_ORDERACCESS_SOLARIS_SPARC_HPP

// Included in orderAccess.hpp header file.

// Compiler version last used for testing: solaris studio 12u3
// Please update this information when this file changes

// Implementation of class OrderAccess.

// Assume TSO.

// A compiler barrier, forcing the C++ compiler to invalidate all memory assumptions
inline void compiler_barrier() {
  __asm__ volatile ("" : : : "memory");
}

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()    { compiler_barrier(); }
inline void OrderAccess::release()    { compiler_barrier(); }

inline void OrderAccess::fence() {
  __asm__ volatile ("membar  #StoreLoad" : : : "memory");
}

inline void OrderAccess::cross_modify_fence() { }

#endif // OS_CPU_SOLARIS_SPARC_ORDERACCESS_SOLARIS_SPARC_HPP