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source/common/umutex.h

 /*
 **********************************************************************
-*   Copyright (C) 1997-2014, International Business Machines
+*   Copyright (C) 1997-2015, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 **********************************************************************
 *
 * File UMUTEX.H
 *
 * Modification History:
 *
 *   Date        Name        Description
 *   04/02/97  aliu        Creation.
 *   04/07/99  srl         rewrite - C interface, multiple mutices
@@ skipping 97 matching lines @@
 inline int32_t umtx_atomic_inc(u_atomic_int32_t *var) {
     return InterlockedIncrement(var);
 }
 
 inline int32_t umtx_atomic_dec(u_atomic_int32_t *var) {
     return InterlockedDecrement(var);
 }
 U_NAMESPACE_END
 
 
+#elif U_HAVE_CLANG_ATOMICS
+/*
+ *  Clang __c11 atomic built-ins
+ */
+
+U_NAMESPACE_BEGIN
+typedef _Atomic(int32_t) u_atomic_int32_t;
+#define ATOMIC_INT32_T_INITIALIZER(val) val
+
+inline int32_t umtx_loadAcquire(u_atomic_int32_t &var) {
+     return __c11_atomic_load(&var, __ATOMIC_ACQUIRE);
+}
+
+inline void umtx_storeRelease(u_atomic_int32_t &var, int32_t val) {
+   return __c11_atomic_store(&var, val, __ATOMIC_RELEASE);
+}
+
+inline int32_t umtx_atomic_inc(u_atomic_int32_t *var) {
+    return __c11_atomic_fetch_add(var, 1, __ATOMIC_SEQ_CST) + 1;
+}
+
+inline int32_t umtx_atomic_dec(u_atomic_int32_t *var) {
+    return __c11_atomic_fetch_sub(var, 1, __ATOMIC_SEQ_CST) - 1;
+}
+U_NAMESPACE_END
+
+
 #elif U_HAVE_GCC_ATOMICS
 /*
  * gcc atomic ops. These are available on several other compilers as well.
  */
 
 U_NAMESPACE_BEGIN
 typedef int32_t u_atomic_int32_t;
 #define ATOMIC_INT32_T_INITIALIZER(val) val
 
 inline int32_t umtx_loadAcquire(u_atomic_int32_t &var) {
@@ skipping 284 matching lines @@
 U_INTERNAL void U_EXPORT2 umtx_condBroadcast(UConditionVar *cond);
 
 /*
  * Signal a condition variable, waking up one waiting thread.
  * CAUTION: Do not use. Place holder only. Not implemented for Windows.
  */
 U_INTERNAL void U_EXPORT2 umtx_condSignal(UConditionVar *cond);
 
 #endif /* UMUTEX_H */
 /*eof*/