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service/nvflinger,service/vi: Handle failure cases with exposed API

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Converts many of the Find* functions to return a std::optional<T> as
opposed to returning the raw return values directly. This allows
removing a few assertions and handles error cases like the service
itself does.
This commit is contained in:
Lioncash
2019-02-05 16:20:04 -05:00
parent 7320c667df
commit ef073ff117
4 changed files with 133 additions and 47 deletions
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23
src/core/hle/service/nvflinger/nvflinger.h
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@ -6,6 +6,7 @@
#include <array>
#include <memory>
#include <optional>
#include <string>
#include <string_view>
#include <vector>
@ -58,15 +59,23 @@ public:
void SetNVDrvInstance(std::shared_ptr<Nvidia::Module> instance);
/// Opens the specified display and returns the ID.
u64 OpenDisplay(std::string_view name);
///
/// If an invalid display name is provided, then an empty optional is returned.
std::optional<u64> OpenDisplay(std::string_view name);
/// Creates a layer on the specified display and returns the layer ID.
u64 CreateLayer(u64 display_id);
///
/// If an invalid display ID is specified, then an empty optional is returned.
std::optional<u64> CreateLayer(u64 display_id);
/// Finds the buffer queue ID of the specified layer in the specified display.
u32 FindBufferQueueId(u64 display_id, u64 layer_id) const;
///
/// 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;
/// Gets the vsync event for the specified display.
///
/// If an invalid display ID is provided, then nullptr is returned.
Kernel::SharedPtr<Kernel::ReadableEvent> FindVsyncEvent(u64 display_id) const;
/// Obtains a buffer queue identified by the ID.
@ -78,16 +87,16 @@ public:
private:
/// Finds the display identified by the specified ID.
Display& FindDisplay(u64 display_id);
Display* FindDisplay(u64 display_id);
/// Finds the display identified by the specified ID.
const Display& FindDisplay(u64 display_id) const;
const Display* FindDisplay(u64 display_id) const;
/// Finds the layer identified by the specified ID in the desired display.
Layer& FindLayer(u64 display_id, u64 layer_id);
Layer* FindLayer(u64 display_id, u64 layer_id);
/// Finds the layer identified by the specified ID in the desired display.
const Layer& FindLayer(u64 display_id, u64 layer_id) const;
const Layer* FindLayer(u64 display_id, u64 layer_id) const;
std::shared_ptr<Nvidia::Module> nvdrv;