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/*
* Copyright 2023 Google LLC
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef skgpu_graphite_BackendSemaphore_DEFINED
#define skgpu_graphite_BackendSemaphore_DEFINED
#include "include/core/SkRefCnt.h"
#include "include/gpu/graphite/GraphiteTypes.h"
#include "include/private/base/SkAnySubclass.h"
namespace skgpu::graphite {
class BackendSemaphoreData;
class SK_API BackendSemaphore {
public:
BackendSemaphore();
BackendSemaphore(const BackendSemaphore&);
~BackendSemaphore();
BackendSemaphore& operator=(const BackendSemaphore&);
bool isValid() const { return fIsValid; }
BackendApi backend() const { return fBackend; }
private:
friend class BackendSemaphoreData;
friend class BackendSemaphorePriv;
// Size determined by looking at the BackendSemaphoreData subclasses, then
// guessing-and-checking. Compiler will complain if this is too small - in that case, just
// increase the number.
inline constexpr static size_t kMaxSubclassSize = 24;
using AnyBackendSemaphoreData = SkAnySubclass<BackendSemaphoreData, kMaxSubclassSize>;
template <typename SomeBackendSemaphoreData>
BackendSemaphore(BackendApi backend, const SomeBackendSemaphoreData& data)
: fBackend(backend), fIsValid(true) {
fSemaphoreData.emplace<SomeBackendSemaphoreData>(data);
}
BackendApi fBackend;
AnyBackendSemaphoreData fSemaphoreData;
bool fIsValid = false;
};
} // namespace skgpu::graphite
#endif // skgpu_graphite_BackendSemaphore_DEFINED
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