CreateProcess.cpp

//-----------------------------------------------
//
//	This file is part of the Siv3D Engine.
//
//	Copyright (c) 2008-2019 Ryo Suzuki
//	Copyright (c) 2016-2019 OpenSiv3D Project
//
//	Licensed under the MIT License.
//
//-----------------------------------------------

# include "CreateProcess.hpp"
# include <Siv3D/Windows.hpp>
# undef CreateProcess
using namespace s3d;

namespace s3dx
{
	struct ProcessInfo::ProcessInfoDetail
	{
		HANDLE m_hProcess = nullptr;

		Optional<int32> m_exitCode;

		bool m_isRunning = false;
	};

	ProcessInfo::ProcessInfo()
		: m_detail(std::make_shared<ProcessInfoDetail>())
	{

	}

	ProcessInfo::ProcessInfoDetail* ProcessInfo::_detail() const
	{
		return m_detail.get();
	}

	bool ProcessInfo::isRunning() const
	{
		if (!m_detail->m_isRunning)
		{
			return false;
		}

		const DWORD r = ::WaitForSingleObject(m_detail->m_hProcess, 0);

		if (r == WAIT_TIMEOUT)
		{
			return true;
		}

		m_detail->m_isRunning = false;

		DWORD exitCode = 0;

		if (::GetExitCodeProcess(m_detail->m_hProcess, &exitCode))
		{
			m_detail->m_exitCode = exitCode;
		}

		return false;
	}

	Optional<int32> ProcessInfo::getExitCode() const
	{
		if (!m_detail->m_isRunning)
		{
			return m_detail->m_exitCode;
		}

		const DWORD r = ::WaitForSingleObject(m_detail->m_hProcess, 0);

		if (r == WAIT_TIMEOUT)
		{
			return none;
		}

		m_detail->m_isRunning = false;

		DWORD exitCode = 0;

		if (GetExitCodeProcess(m_detail->m_hProcess, &exitCode))
		{
			m_detail->m_exitCode = exitCode;
		}

		return m_detail->m_exitCode;
	}

	namespace System
	{
		ProcessInfo CreateProcess(const FilePath& applicationName, const String& params)
		{
			std::wstring command = params.toWstr();
			const std::wstring currentPath = FileSystem::ParentPath(applicationName).toWstr();

			STARTUPINFOW si;
			ZeroMemory(&si, sizeof(si));
			si.cb = sizeof(si);

			PROCESS_INFORMATION pi = {};

			ProcessInfo info;

			if (::CreateProcessW(applicationName.toWstr().c_str(), &command[0], nullptr, nullptr, false, 0, nullptr, currentPath.c_str(), &si, &pi) == 0)
			{
				return info;
			}

			::CloseHandle(pi.hThread);

			info._detail()->m_isRunning = true;

			info._detail()->m_hProcess = pi.hProcess;

			return info;
		}
	}
}

CreateProcess.hpp

//-----------------------------------------------
//
//	This file is part of the Siv3D Engine.
//
//	Copyright (c) 2008-2019 Ryo Suzuki
//	Copyright (c) 2016-2019 OpenSiv3D Project
//
//	Licensed under the MIT License.
//
//-----------------------------------------------

# include <Siv3D.hpp>

namespace s3dx
{
	class ProcessInfo
	{
	private:

		struct ProcessInfoDetail;

		std::shared_ptr<ProcessInfoDetail> m_detail;

	public:

		ProcessInfo();

		bool isRunning() const;

		Optional<s3d::int32> getExitCode() const;

		ProcessInfoDetail* _detail() const;
	};

	namespace System
	{
		ProcessInfo CreateProcess(const s3d::FilePath& applicationName, const s3d::String& params = U"");
	}
}