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core: Make use of [[nodiscard]] with the System class 

Given this is a central class, we should flag cases where the return
value of some functions not being used is likely a bug.

Co-Authored-By: LC <712067+lioncash@users.noreply.github.com>
This commit is contained in:
FearlessTobi 2021-01-17 19:05:43 +01:00
parent 7c6d7905a4
commit 8d2e28cf76
1 changed files with 40 additions and 43 deletions
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83
src/core/core.h
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@ -69,7 +69,7 @@ public:
* Gets the instance of the System singleton class. * Gets the instance of the System singleton class.
* @returns Reference to the instance of the System singleton class. * @returns Reference to the instance of the System singleton class.
*/ */
static System& GetInstance() { [[nodiscard]] static System& GetInstance() {
return s_instance; return s_instance;
} }
@ -106,13 +106,13 @@ public:
* @param tight_loop If false, the CPU single-steps. * @param tight_loop If false, the CPU single-steps.
* @return Result status, indicating whethor or not the operation succeeded. * @return Result status, indicating whethor or not the operation succeeded.
*/ */
ResultStatus RunLoop(bool tight_loop = true); [[nodiscard]] ResultStatus RunLoop(bool tight_loop = true);
/** /**
* Step the CPU one instruction * Step the CPU one instruction
* @return Result status, indicating whethor or not the operation succeeded. * @return Result status, indicating whethor or not the operation succeeded.
*/ */
ResultStatus SingleStep(); [[nodiscard]] ResultStatus SingleStep();
/// Shutdown the emulated system. /// Shutdown the emulated system.
void Shutdown(bool is_deserializing = false); void Shutdown(bool is_deserializing = false);
@ -122,7 +122,7 @@ public:
enum class Signal : u32 { None, Shutdown, Reset, Save, Load }; enum class Signal : u32 { None, Shutdown, Reset, Save, Load };
bool SendSignal(Signal signal, u32 param = 0); [[nodiscard]] bool SendSignal(Signal signal, u32 param = 0);
/// Request reset of the system /// Request reset of the system
void RequestReset() { void RequestReset() {
@ -141,14 +141,14 @@ public:
* @param filepath String path to the executable application to load on the host file system. * @param filepath String path to the executable application to load on the host file system.
* @returns ResultStatus code, indicating if the operation succeeded. * @returns ResultStatus code, indicating if the operation succeeded.
*/ */
ResultStatus Load(Frontend::EmuWindow& emu_window, const std::string& filepath); [[nodiscard]] ResultStatus Load(Frontend::EmuWindow& emu_window, const std::string& filepath);
/** /**
* Indicates if the emulated system is powered on (all subsystems initialized and able to run an * Indicates if the emulated system is powered on (all subsystems initialized and able to run an
* application). * application).
* @returns True if the emulated system is powered on, otherwise false. * @returns True if the emulated system is powered on, otherwise false.
*/ */
bool IsPoweredOn() const { [[nodiscard]] bool IsPoweredOn() const {
return cpu_cores.size() > 0 && return cpu_cores.size() > 0 &&
std::all_of(cpu_cores.begin(), cpu_cores.end(), std::all_of(cpu_cores.begin(), cpu_cores.end(),
[](std::shared_ptr<ARM_Interface> ptr) { return ptr != nullptr; }); [](std::shared_ptr<ARM_Interface> ptr) { return ptr != nullptr; });
@ -159,21 +159,21 @@ public:
* Returns a reference to the telemetry session for this emulation session. * Returns a reference to the telemetry session for this emulation session.
* @returns Reference to the telemetry session. * @returns Reference to the telemetry session.
*/ */
Core::TelemetrySession& TelemetrySession() const { [[nodiscard]] Core::TelemetrySession& TelemetrySession() const {
return *telemetry_session; return *telemetry_session;
} }
/// Prepare the core emulation for a reschedule /// Prepare the core emulation for a reschedule
void PrepareReschedule(); void PrepareReschedule();
PerfStats::Results GetAndResetPerfStats(); [[nodiscard]] PerfStats::Results GetAndResetPerfStats();
/** /**
* Gets a reference to the emulated CPU. * Gets a reference to the emulated CPU.
* @returns A reference to the emulated CPU. * @returns A reference to the emulated CPU.
*/ */
ARM_Interface& GetRunningCore() { [[nodiscard]] ARM_Interface& GetRunningCore() {
return *running_core; return *running_core;
}; };
@ -183,11 +183,11 @@ public:
* @returns A reference to the emulated CPU. * @returns A reference to the emulated CPU.
*/ */
ARM_Interface& GetCore(u32 core_id) { [[nodiscard]] ARM_Interface& GetCore(u32 core_id) {
return *cpu_cores[core_id]; return *cpu_cores[core_id];
}; };
u32 GetNumCores() const { [[nodiscard]] u32 GetNumCores() const {
return static_cast<u32>(cpu_cores.size()); return static_cast<u32>(cpu_cores.size());
} }
@ -201,68 +201,65 @@ public:
* Gets a reference to the emulated DSP. * Gets a reference to the emulated DSP.
* @returns A reference to the emulated DSP. * @returns A reference to the emulated DSP.
*/ */
AudioCore::DspInterface& DSP() { [[nodiscard]] AudioCore::DspInterface& DSP() {
return *dsp_core; return *dsp_core;
} }
RendererBase& Renderer(); [[nodiscard]] RendererBase& Renderer();
/** /**
* Gets a reference to the service manager. * Gets a reference to the service manager.
* @returns A reference to the service manager. * @returns A reference to the service manager.
*/ */
Service::SM::ServiceManager& ServiceManager(); [[nodiscard]] Service::SM::ServiceManager& ServiceManager();
/** /**
* Gets a const reference to the service manager. * Gets a const reference to the service manager.
* @returns A const reference to the service manager. * @returns A const reference to the service manager.
*/ */
const Service::SM::ServiceManager& ServiceManager() const; [[nodiscard]] const Service::SM::ServiceManager& ServiceManager() const;
/// Gets a reference to the archive manager /// Gets a reference to the archive manager
Service::FS::ArchiveManager& ArchiveManager(); [[nodiscard]] Service::FS::ArchiveManager& ArchiveManager();
/// Gets a const reference to the archive manager /// Gets a const reference to the archive manager
const Service::FS::ArchiveManager& ArchiveManager() const; [[nodiscard]] const Service::FS::ArchiveManager& ArchiveManager() const;
/// Gets a reference to the kernel /// Gets a reference to the kernel
Kernel::KernelSystem& Kernel(); [[nodiscard]] Kernel::KernelSystem& Kernel();
/// Gets a const reference to the kernel /// Gets a const reference to the kernel
const Kernel::KernelSystem& Kernel() const; [[nodiscard]] const Kernel::KernelSystem& Kernel() const;
/// Gets a reference to the timing system /// Gets a reference to the timing system
Timing& CoreTiming(); [[nodiscard]] Timing& CoreTiming();
/// Gets a const reference to the timing system /// Gets a const reference to the timing system
const Timing& CoreTiming() const; [[nodiscard]] const Timing& CoreTiming() const;
/// Gets a reference to the memory system /// Gets a reference to the memory system
Memory::MemorySystem& Memory(); [[nodiscard]] Memory::MemorySystem& Memory();
/// Gets a const reference to the memory system /// Gets a const reference to the memory system
const Memory::MemorySystem& Memory() const; [[nodiscard]] const Memory::MemorySystem& Memory() const;
/// Gets a reference to the cheat engine /// Gets a reference to the cheat engine
Cheats::CheatEngine& CheatEngine(); [[nodiscard]] Cheats::CheatEngine& CheatEngine();
/// Gets a const reference to the cheat engine /// Gets a const reference to the cheat engine
const Cheats::CheatEngine& CheatEngine() const; [[nodiscard]] const Cheats::CheatEngine& CheatEngine() const;
/// Gets a reference to the custom texture cache system /// Gets a reference to the custom texture cache system
Core::CustomTexCache& CustomTexCache(); [[nodiscard]] Core::CustomTexCache& CustomTexCache();
/// Gets a const reference to the custom texture cache system /// Gets a const reference to the custom texture cache system
const Core::CustomTexCache& CustomTexCache() const; [[nodiscard]] const Core::CustomTexCache& CustomTexCache() const;
/// Handles loading all custom textures from disk into cache.
void PreloadCustomTextures();
/// Gets a reference to the video dumper backend /// Gets a reference to the video dumper backend
VideoDumper::Backend& VideoDumper(); [[nodiscard]] VideoDumper::Backend& VideoDumper();
/// Gets a const reference to the video dumper backend /// Gets a const reference to the video dumper backend
const VideoDumper::Backend& VideoDumper() const; [[nodiscard]] const VideoDumper::Backend& VideoDumper() const;
std::unique_ptr<PerfStats> perf_stats; std::unique_ptr<PerfStats> perf_stats;
FrameLimiter frame_limiter; FrameLimiter frame_limiter;
@ -274,11 +271,11 @@ public:
} }
} }
const std::string& GetStatusDetails() const { [[nodiscard]] const std::string& GetStatusDetails() const {
return status_details; return status_details;
} }
Loader::AppLoader& GetAppLoader() const { [[nodiscard]] Loader::AppLoader& GetAppLoader() const {
return *app_loader; return *app_loader;
} }
@ -288,11 +285,11 @@ public:
void RegisterSoftwareKeyboard(std::shared_ptr<Frontend::SoftwareKeyboard> swkbd); void RegisterSoftwareKeyboard(std::shared_ptr<Frontend::SoftwareKeyboard> swkbd);
std::shared_ptr<Frontend::MiiSelector> GetMiiSelector() const { [[nodiscard]] std::shared_ptr<Frontend::MiiSelector> GetMiiSelector() const {
return registered_mii_selector; return registered_mii_selector;
} }
std::shared_ptr<Frontend::SoftwareKeyboard> GetSoftwareKeyboard() const { [[nodiscard]] std::shared_ptr<Frontend::SoftwareKeyboard> GetSoftwareKeyboard() const {
return registered_swkbd; return registered_swkbd;
} }
@ -300,7 +297,7 @@ public:
void RegisterImageInterface(std::shared_ptr<Frontend::ImageInterface> image_interface); void RegisterImageInterface(std::shared_ptr<Frontend::ImageInterface> image_interface);
std::shared_ptr<Frontend::ImageInterface> GetImageInterface() const { [[nodiscard]] std::shared_ptr<Frontend::ImageInterface> GetImageInterface() const {
return registered_image_interface; return registered_image_interface;
} }
@ -316,8 +313,8 @@ private:
* @param system_mode The system mode. * @param system_mode The system mode.
* @return ResultStatus code, indicating if the operation succeeded. * @return ResultStatus code, indicating if the operation succeeded.
*/ */
ResultStatus Init(Frontend::EmuWindow& emu_window, u32 system_mode, u8 n3ds_mode, [[nodiscard]] ResultStatus Init(Frontend::EmuWindow& emu_window, u32 system_mode, u8 n3ds_mode,
u32 num_cores); u32 num_cores);
/// Reschedule the core emulation /// Reschedule the core emulation
void Reschedule(); void Reschedule();
@ -387,19 +384,19 @@ private:
void serialize(Archive& ar, const unsigned int file_version); void serialize(Archive& ar, const unsigned int file_version);
}; };
inline ARM_Interface& GetRunningCore() { [[nodiscard]] inline ARM_Interface& GetRunningCore() {
return System::GetInstance().GetRunningCore(); return System::GetInstance().GetRunningCore();
} }
inline ARM_Interface& GetCore(u32 core_id) { [[nodiscard]] inline ARM_Interface& GetCore(u32 core_id) {
return System::GetInstance().GetCore(core_id); return System::GetInstance().GetCore(core_id);
} }
inline u32 GetNumCores() { [[nodiscard]] inline u32 GetNumCores() {
return System::GetInstance().GetNumCores(); return System::GetInstance().GetNumCores();
} }
inline AudioCore::DspInterface& DSP() { [[nodiscard]] inline AudioCore::DspInterface& DSP() {
return System::GetInstance().DSP(); return System::GetInstance().DSP();
} }