Function SetThreadName

Sources/nCine/Threading/Thread.cpp:107–143

		constexpr std::uint32_t MaxThreadNameLength = 256;

		void SetThreadName(HANDLE handle, const char* name)
		{
			using _SetThreadDescription = HRESULT(WINAPI*)(HANDLE hThread, PCWSTR lpThreadDescription);

			static auto setThreadDescription = reinterpret_cast<_SetThreadDescription>(::GetProcAddress(::GetModuleHandle(L"kernel32.dll"), "SetThreadDescription"));
			if (setThreadDescription != nullptr) {
				wchar_t buffer[MaxThreadNameLength];
				Death::Utf8::ToUtf16(buffer, name);
				const HANDLE threadHandle = (handle != reinterpret_cast<HANDLE>(-1)) ? handle : ::GetCurrentThread();
				setThreadDescription(threadHandle, buffer);
				return;
			}

#	if !defined(DEATH_TARGET_MINGW)
			constexpr DWORD MS_VC_EXCEPTION = 0x406D1388;

#		pragma pack(push, 8)
			struct THREADNAME_INFO {
				DWORD dwType;
				LPCSTR szName;
				DWORD dwThreadID;
				DWORD dwFlags;
			};
#		pragma pack(pop)

			THREADNAME_INFO info;
			info.dwType = 0x1000;
			info.szName = name;
			info.dwThreadID = (handle == reinterpret_cast<HANDLE>(-1) ? ::GetCurrentThreadId() : ::GetThreadId(handle));
			info.dwFlags = 0;

			__try {
				::RaiseException(MS_VC_EXCEPTION, 0, sizeof(info) / sizeof(ULONG_PTR), reinterpret_cast<ULONG_PTR*>(&info));
			} __except (EXCEPTION_EXECUTE_HANDLER) {
			}
#	endif
		}
#else
		const std::uint32_t MaxThreadNameLength = 16;
#endif