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 #ifndef OS_CPU_LINUX_AARCH64_ORDERACCESS_LINUX_AARCH64_HPP
  27 #define OS_CPU_LINUX_AARCH64_ORDERACCESS_LINUX_AARCH64_HPP
  28 
  29 // Included in orderAccess.hpp header file.
  30 
  31 #include "runtime/vm_version.hpp"
  32 
  33 // Implementation of class OrderAccess.
  34 
  35 inline void OrderAccess::loadload()   { acquire(); }
  36 inline void OrderAccess::storestore() { release(); }
  37 inline void OrderAccess::loadstore()  { acquire(); }
  38 inline void OrderAccess::storeload()  { fence(); }
  39 




  40 inline void OrderAccess::acquire() {
  41   READ_MEM_BARRIER;
  42 }
  43 
  44 inline void OrderAccess::release() {
  45   WRITE_MEM_BARRIER;
  46 }
  47 
  48 inline void OrderAccess::fence() {
  49   FULL_MEM_BARRIER;
  50 }
  51 
  52 inline void OrderAccess::cross_modify_fence() { }
  53 
  54 template<size_t byte_size>
  55 struct OrderAccess::PlatformOrderedLoad<byte_size, X_ACQUIRE>
  56 {
  57   template <typename T>
  58   T operator()(const volatile T* p) const { T data; __atomic_load(const_cast<T*>(p), &data, __ATOMIC_ACQUIRE); return data; }
  59 };
  60 
  61 template<size_t byte_size>
  62 struct OrderAccess::PlatformOrderedStore<byte_size, RELEASE_X>
  63 {
  64   template <typename T>
  65   void operator()(T v, volatile T* p) const { __atomic_store(const_cast<T*>(p), &v, __ATOMIC_RELEASE); }
  66 };
  67 
  68 template<size_t byte_size>
  69 struct OrderAccess::PlatformOrderedStore<byte_size, RELEASE_X_FENCE>
  70 {
  71   template <typename T>
  72   void operator()(T v, volatile T* p) const { release_store(p, v); fence(); }
  73 };
  74 
  75 #endif // OS_CPU_LINUX_AARCH64_ORDERACCESS_LINUX_AARCH64_HPP

  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 #ifndef OS_CPU_LINUX_AARCH64_ORDERACCESS_LINUX_AARCH64_HPP
  27 #define OS_CPU_LINUX_AARCH64_ORDERACCESS_LINUX_AARCH64_HPP
  28 
  29 // Included in orderAccess.hpp header file.
  30 
  31 #include "runtime/vm_version.hpp"
  32 
  33 // Implementation of class OrderAccess.
  34 
  35 inline void OrderAccess::loadload()   { acquire(); }
  36 inline void OrderAccess::storestore() { release(); }
  37 inline void OrderAccess::loadstore()  { acquire(); }
  38 inline void OrderAccess::storeload()  { fence(); }
  39 
  40 #define FULL_MEM_BARRIER  __sync_synchronize()
  41 #define READ_MEM_BARRIER  __atomic_thread_fence(__ATOMIC_ACQUIRE);
  42 #define WRITE_MEM_BARRIER __atomic_thread_fence(__ATOMIC_RELEASE);
  43 
  44 inline void OrderAccess::acquire() {
  45   READ_MEM_BARRIER;
  46 }
  47 
  48 inline void OrderAccess::release() {
  49   WRITE_MEM_BARRIER;
  50 }
  51 
  52 inline void OrderAccess::fence() {
  53   FULL_MEM_BARRIER;
  54 }
  55 
  56 inline void OrderAccess::cross_modify_fence() { }





















  57 
  58 #endif // OS_CPU_LINUX_AARCH64_ORDERACCESS_LINUX_AARCH64_HPP