src/share/vm/runtime/atomic.hpp

rev 7555 : Improved metaprogramming

@@ -24,15 +24,46 @@
 
 #ifndef SHARE_VM_RUNTIME_ATOMIC_HPP
 #define SHARE_VM_RUNTIME_ATOMIC_HPP
 
 #include "memory/allocation.hpp"
+#include "utilities/traits/selectBaseClass.hpp"
 
-class Atomic : AllStatic {
- private:
+class AtomicPlatform;
+
+class AtomicBase : AllStatic {
+ protected:
   static jbyte cmpxchg_general(jbyte exchange_value, volatile jbyte* dest, jbyte compare_value);
+ public:
+  inline static jbyte    cmpxchg    (jbyte        exchange_value, volatile jbyte*        dest, jbyte        compare_value) {
+    return cmpxchg_general(exchange_value, dest, compare_value);
+  }
+};
+
+// Linux
+#ifdef TARGET_OS_ARCH_linux_x86
+# include "atomic_linux_x86.hpp"
+#endif
+
+// Solaris
+#ifdef TARGET_OS_ARCH_solaris_x86
+# include "atomic_solaris_x86.hpp"
+#endif
+
+// Windows
+#ifdef TARGET_OS_ARCH_windows_x86
+# include "atomic_windows_x86.hpp"
+#endif
+
+// BSD
+#ifdef TARGET_OS_ARCH_bsd_x86
+# include "atomic_bsd_x86.hpp"
+#endif
+
+typedef SelectBaseClass<AtomicPlatform, AtomicBase>::type AtomicSuper;
 
+class Atomic : public AtomicSuper {
  public:
   // Atomic operations on jlong types are not available on all 32-bit
   // platforms. If atomic ops on jlongs are defined here they must only
   // be used from code that verifies they are available at runtime and
   // can provide an alternative action if not - see supports_cx8() for