michael@0: /*
michael@0:  * Copyright 2013 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #ifndef SkMutex_none_DEFINED
michael@0: #define SkMutex_none_DEFINED
michael@0: 
michael@0: /** Non-mutex mutex for uniprocessor systems. */
michael@0: 
michael@0: struct SkBaseMutex {
michael@0:     void acquire() { }
michael@0:     void release() { }
michael@0: };
michael@0: 
michael@0: class SkMutex : public SkBaseMutex {
michael@0: public:
michael@0:     SkMutex() { }
michael@0:     ~SkMutex() { }
michael@0: 
michael@0: private:
michael@0:     SkMutex(const SkMutex&);
michael@0:     SkMutex& operator=(const SkMutex&);
michael@0: };
michael@0: 
michael@0: // Using POD-style initialization prevents the generation of a static initializer.
michael@0: #define SK_DECLARE_STATIC_MUTEX(name) static SkBaseMutex name = { }
michael@0: 
michael@0: // Special case used when the static mutex must be available globally.
michael@0: #define SK_DECLARE_GLOBAL_MUTEX(name) SkBaseMutex name = { }
michael@0: 
michael@0: #endif