michael@0: /*
michael@0:  * Copyright 2012 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: #include "GrTypes.h"
michael@0: #include "SkThread.h"       // for sk_atomic_inc
michael@0: 
michael@0: // Well, the dummy_ "fix" caused a warning on windows, so hiding all of it
michael@0: // until we can find a universal fix.
michael@0: #if 0
michael@0: // This used to be a global scope, but we got a warning about unused variable
michael@0: // so we moved it into here. We just want it to compile, so we can test the
michael@0: // static asserts.
michael@0: static inline void dummy_function_to_avoid_unused_var_warning() {
michael@0:     GrCacheID::Key kAssertKey;
michael@0:     GR_STATIC_ASSERT(sizeof(kAssertKey.fData8) == sizeof(kAssertKey.fData32));
michael@0:     GR_STATIC_ASSERT(sizeof(kAssertKey.fData8) == sizeof(kAssertKey.fData64));
michael@0:     GR_STATIC_ASSERT(sizeof(kAssertKey.fData8) == sizeof(kAssertKey));
michael@0: }
michael@0: #endif
michael@0: 
michael@0: GrCacheID::Domain GrCacheID::GenerateDomain() {
michael@0:     static int32_t gNextDomain = kInvalid_Domain + 1;
michael@0: 
michael@0:     int32_t domain = sk_atomic_inc(&gNextDomain);
michael@0:     if (domain >= 1 << (8 * sizeof(Domain))) {
michael@0:         GrCrash("Too many Cache Domains");
michael@0:     }
michael@0: 
michael@0:     return static_cast<Domain>(domain);
michael@0: }