1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/ports/SkMutex_win.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,66 @@
1.4 +/*
1.5 + * Copyright 2013 Google Inc.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +
1.11 +#ifndef SkMutex_win_DEFINED
1.12 +#define SkMutex_win_DEFINED
1.13 +
1.14 +/** Windows CriticalSection based mutex. */
1.15 +
1.16 +#ifndef WIN32_LEAN_AND_MEAN
1.17 +# define WIN32_LEAN_AND_MEAN
1.18 +# define WIN32_IS_MEAN_WAS_LOCALLY_DEFINED
1.19 +#endif
1.20 +#ifndef NOMINMAX
1.21 +# define NOMINMAX
1.22 +# define NOMINMAX_WAS_LOCALLY_DEFINED
1.23 +#endif
1.24 +#
1.25 +#include <windows.h>
1.26 +#
1.27 +#ifdef WIN32_IS_MEAN_WAS_LOCALLY_DEFINED
1.28 +# undef WIN32_IS_MEAN_WAS_LOCALLY_DEFINED
1.29 +# undef WIN32_LEAN_AND_MEAN
1.30 +#endif
1.31 +#ifdef NOMINMAX_WAS_LOCALLY_DEFINED
1.32 +# undef NOMINMAX_WAS_LOCALLY_DEFINED
1.33 +# undef NOMINMAX
1.34 +#endif
1.35 +
1.36 +// On Windows, SkBaseMutex and SkMutex are the same thing,
1.37 +// we can't easily get rid of static initializers.
1.38 +class SkMutex {
1.39 +public:
1.40 + SkMutex() {
1.41 + InitializeCriticalSection(&fStorage);
1.42 + }
1.43 +
1.44 + ~SkMutex() {
1.45 + DeleteCriticalSection(&fStorage);
1.46 + }
1.47 +
1.48 + void acquire() {
1.49 + EnterCriticalSection(&fStorage);
1.50 + }
1.51 +
1.52 + void release() {
1.53 + LeaveCriticalSection(&fStorage);
1.54 + }
1.55 +
1.56 +private:
1.57 + SkMutex(const SkMutex&);
1.58 + SkMutex& operator=(const SkMutex&);
1.59 +
1.60 + CRITICAL_SECTION fStorage;
1.61 +};
1.62 +
1.63 +typedef SkMutex SkBaseMutex;
1.64 +
1.65 +// Windows currently provides no documented means of POD initializing a CRITICAL_SECTION.
1.66 +#define SK_DECLARE_STATIC_MUTEX(name) static SkBaseMutex name
1.67 +#define SK_DECLARE_GLOBAL_MUTEX(name) SkBaseMutex name
1.68 +
1.69 +#endif
