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nvflinger: Mark interface functions with return values as [[nodiscard]]

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Not using the return value of these functions are undeniably the source
of a bug. This way we allow compilers to loudly make any future misuses
evident.
This commit is contained in:
Lioncash 2020-07-25 18:55:53 -04:00
parent 5dab23e017
commit 7b070bbf62
1 changed files with 14 additions and 16 deletions
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30
src/core/hle/service/nvflinger/nvflinger.h
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@ -54,12 +54,12 @@ public:
/// Opens the specified display and returns the ID. /// Opens the specified display and returns the ID.
/// ///
/// If an invalid display name is provided, then an empty optional is returned. /// If an invalid display name is provided, then an empty optional is returned.
std::optional<u64> OpenDisplay(std::string_view name); [[nodiscard]] std::optional<u64> OpenDisplay(std::string_view name);
/// Creates a layer on the specified display and returns the layer ID. /// Creates a layer on the specified display and returns the layer ID.
/// ///
/// If an invalid display ID is specified, then an empty optional is returned. /// If an invalid display ID is specified, then an empty optional is returned.
std::optional<u64> CreateLayer(u64 display_id); [[nodiscard]] std::optional<u64> CreateLayer(u64 display_id);
/// Closes a layer on all displays for the given layer ID. /// Closes a layer on all displays for the given layer ID.
void CloseLayer(u64 layer_id); void CloseLayer(u64 layer_id);
@ -67,41 +67,39 @@ public:
/// Finds the buffer queue ID of the specified layer in the specified display. /// Finds the buffer queue ID of the specified layer in the specified display.
/// ///
/// If an invalid display ID or layer ID is provided, then an empty optional is returned. /// If an invalid display ID or layer ID is provided, then an empty optional is returned.
std::optional<u32> FindBufferQueueId(u64 display_id, u64 layer_id) const; [[nodiscard]] std::optional<u32> FindBufferQueueId(u64 display_id, u64 layer_id) const;
/// Gets the vsync event for the specified display. /// Gets the vsync event for the specified display.
/// ///
/// If an invalid display ID is provided, then nullptr is returned. /// If an invalid display ID is provided, then nullptr is returned.
std::shared_ptr<Kernel::ReadableEvent> FindVsyncEvent(u64 display_id) const; [[nodiscard]] std::shared_ptr<Kernel::ReadableEvent> FindVsyncEvent(u64 display_id) const;
/// Obtains a buffer queue identified by the ID. /// Obtains a buffer queue identified by the ID.
BufferQueue& FindBufferQueue(u32 id); [[nodiscard]] BufferQueue& FindBufferQueue(u32 id);
/// Obtains a buffer queue identified by the ID. /// Obtains a buffer queue identified by the ID.
const BufferQueue& FindBufferQueue(u32 id) const; [[nodiscard]] const BufferQueue& FindBufferQueue(u32 id) const;
/// Performs a composition request to the emulated nvidia GPU and triggers the vsync events when /// Performs a composition request to the emulated nvidia GPU and triggers the vsync events when
/// finished. /// finished.
void Compose(); void Compose();
s64 GetNextTicks() const; [[nodiscard]] s64 GetNextTicks() const;
std::unique_lock<std::mutex> Lock() const { [[nodiscard]] std::unique_lock<std::mutex> Lock() const { return std::unique_lock{*guard}; }
return std::unique_lock{*guard};
}
private: private :
/// Finds the display identified by the specified ID. /// Finds the display identified by the specified ID.
VI::Display* FindDisplay(u64 display_id); [[nodiscard]] VI::Display* FindDisplay(u64 display_id);
/// Finds the display identified by the specified ID. /// Finds the display identified by the specified ID.
const VI::Display* FindDisplay(u64 display_id) const; [[nodiscard]] const VI::Display* FindDisplay(u64 display_id) const;
/// Finds the layer identified by the specified ID in the desired display. /// Finds the layer identified by the specified ID in the desired display.
VI::Layer* FindLayer(u64 display_id, u64 layer_id); [[nodiscard]] VI::Layer* FindLayer(u64 display_id, u64 layer_id);
/// Finds the layer identified by the specified ID in the desired display. /// Finds the layer identified by the specified ID in the desired display.
const VI::Layer* FindLayer(u64 display_id, u64 layer_id) const; [[nodiscard]] const VI::Layer* FindLayer(u64 display_id, u64 layer_id) const;
static void VSyncThread(NVFlinger& nv_flinger); static void VSyncThread(NVFlinger& nv_flinger);