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      1 /*
      2  * Copyright 2014 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #ifndef SkThreadPriv_DEFINED
      9 #define SkThreadPriv_DEFINED
     10 
     11 #include "SkTypes.h"
     12 
     13 // SK_ATOMICS_PLATFORM_H must provide inline implementations for the following declarations.
     14 
     15 /** Atomic compare and set, for pointers.
     16  *  If *addr == before, set *addr to after.  Always returns previous value of *addr.
     17  *  This must issue a release barrier on success, acquire on failure, and always a compiler barrier.
     18  */
     19 static void* sk_atomic_cas(void** addr, void* before, void* after);
     20 
     21 #include SK_ATOMICS_PLATFORM_H
     22 
     23 #endif//SkThreadPriv_DEFINED
     24