C++ PSP_Shutdown函数代码示例

void EmuScreen::sendMessage(const char *message, const char *value) {
	// External commands, like from the Windows UI.
	if (!strcmp(message, "pause")) {
		screenManager()->push(new GamePauseScreen(gamePath_));
	} else if (!strcmp(message, "stop")) {
		// We will push MainScreen in update().
		PSP_Shutdown();
		bootPending_ = false;
		invalid_ = true;
		host->UpdateDisassembly();
	} else if (!strcmp(message, "reset")) {
		PSP_Shutdown();
		bootPending_ = true;
		invalid_ = true;
		host->UpdateDisassembly();

		std::string resetError;
		if (!PSP_InitStart(PSP_CoreParameter(), &resetError)) {
			ELOG("Error resetting: %s", resetError.c_str());
			screenManager()->switchScreen(new MainScreen());
			System_SendMessage("event", "failstartgame");
			return;
		}
	} else if (!strcmp(message, "boot")) {
		const char *ext = strrchr(value, '.');
		if (!strcmp(ext, ".ppst")) {
			SaveState::Load(value, &AfterStateLoad);
		} else {
			PSP_Shutdown();
			bootPending_ = true;
			bootGame(value);
		}
	} else if (!strcmp(message, "control mapping")) {
		UpdateUIState(UISTATE_MENU);
		screenManager()->push(new ControlMappingScreen());
	} else if (!strcmp(message, "settings")) {
		UpdateUIState(UISTATE_MENU);
		screenManager()->push(new GameSettingsScreen(gamePath_));
	} else if (!strcmp(message, "gpu resized") || !strcmp(message, "gpu clear cache")) {
		if (gpu) {
			gpu->ClearCacheNextFrame();
			gpu->Resized();
		}
		Reporting::UpdateConfig();
		RecreateViews();
	} else if (!strcmp(message, "gpu dump next frame")) {
		if (gpu) gpu->DumpNextFrame();
	} else if (!strcmp(message, "clear jit")) {
		currentMIPS->ClearJitCache();
		if (PSP_IsInited()) {
			currentMIPS->UpdateCore(g_Config.bJit ? CPU_JIT : CPU_INTERPRETER);
		}
	} else if (!strcmp(message, "window minimized")) {
		if (!strcmp(value, "true")) {
			gstate_c.skipDrawReason |= SKIPDRAW_WINDOW_MINIMIZED;
		} else {
			gstate_c.skipDrawReason &= ~SKIPDRAW_WINDOW_MINIMIZED;
		}
	}
}

void EmuScreen::sendMessage(const char *message, const char *value) {
	// External commands, like from the Windows UI.
	if (!strcmp(message, "pause")) {
		screenManager()->push(new GamePauseScreen(gamePath_));
	} else if (!strcmp(message, "stop")) {
		screenManager()->switchScreen(new MainScreen());
	} else if (!strcmp(message, "reset")) {
		PSP_Shutdown();
		std::string resetError;
		if (!PSP_Init(PSP_CoreParameter(), &resetError)) {
			ELOG("Error resetting: %s", resetError.c_str());
			screenManager()->switchScreen(new MainScreen());
			return;
		}
		host->BootDone();
		host->UpdateDisassembly();
#ifdef _WIN32
		if (g_Config.bAutoRun) {
			Core_EnableStepping(false);
		} else {
			Core_EnableStepping(true);
		}
#endif
	}
	else if (!strcmp(message, "boot")) {
		PSP_Shutdown();
		bootGame(value);
	}
}

void EmuScreen::sendMessage(const char *message, const char *value) {
	// External commands, like from the Windows UI.
	if (!strcmp(message, "pause")) {
		screenManager()->push(new GamePauseScreen(gamePath_));
	} else if (!strcmp(message, "stop")) {
		// We will push MainScreen in update().
		PSP_Shutdown();
		booted_ = false;
		invalid_ = true;
	} else if (!strcmp(message, "reset")) {
		PSP_Shutdown();
		booted_ = false;
		invalid_ = true;
		std::string resetError;
		if (!PSP_InitStart(PSP_CoreParameter(), &resetError)) {
			ELOG("Error resetting: %s", resetError.c_str());
			screenManager()->switchScreen(new MainScreen());
			System_SendMessage("event", "failstartgame");
			return;
		}
#ifndef MOBILE_DEVICE
		if (g_Config.bAutoRun) {
			Core_EnableStepping(false);
		} else {
			Core_EnableStepping(true);
		}
#endif
	} else if (!strcmp(message, "boot")) {
		PSP_Shutdown();
		booted_ = false;
		bootGame(value);
	} else if (!strcmp(message, "control mapping")) {
		UpdateUIState(UISTATE_MENU);
		screenManager()->push(new ControlMappingScreen());
	} else if (!strcmp(message, "settings")) {
		UpdateUIState(UISTATE_MENU);
		screenManager()->push(new GameSettingsScreen(gamePath_));
	} else if (!strcmp(message, "gpu resized") || !strcmp(message, "gpu clear cache")) {
		if (gpu) {
			gpu->ClearCacheNextFrame();
			gpu->Resized();
		}
		Reporting::UpdateConfig();
		RecreateViews();
	} else if (!strcmp(message, "gpu dump next frame")) {
		if (gpu) gpu->DumpNextFrame();
	} else if (!strcmp(message, "clear jit")) {
		if (MIPSComp::jit) {
			MIPSComp::jit->ClearCache();
		}
	}
}

bool PSP_Init(const CoreParameter &coreParam, std::string *error_string) {
	INFO_LOG(BOOT, "PPSSPP %s", PPSSPP_GIT_VERSION);

	coreParameter = coreParam;
	coreParameter.errorString = "";

	if (g_Config.bSeparateCPUThread) {
		Core_ListenShutdown(System_Wake);
		CPU_SetState(CPU_THREAD_PENDING);
		cpuThread = new std::thread(&CPU_RunLoop);
		cpuThread->detach();
		CPU_WaitStatus(cpuThreadReplyCond, &CPU_IsReady);
	} else {
		CPU_Init();
	}

	bool success = coreParameter.fileToStart != "";
	*error_string = coreParameter.errorString;
	if (success) {
		success = GPU_Init();
		if (!success) {
			PSP_Shutdown();
			*error_string = "Unable to initialize rendering engine.";
		}
	}
	return success;
}

	bool HandleFailure()
	{
		// Okay, first, let's give the rewind state a shot - maybe we can at least not reset entirely.
		// Even if this was a rewind, maybe we can still load a previous one.
		CChunkFileReader::Error result;
		do
			result = rewindStates.Restore();
		while (result == CChunkFileReader::ERROR_BROKEN_STATE);

		if (result == CChunkFileReader::ERROR_NONE) {
			return true;
		}

		// We tried, our only remaining option is to reset the game.
		PSP_Shutdown();
		std::string resetError;
		if (!PSP_Init(PSP_CoreParameter(), &resetError))
		{
			ERROR_LOG(BOOT, "Error resetting: %s", resetError.c_str());
			// TODO: This probably doesn't clean up well enough.
			Core_Stop();
			return false;
		}
		host->BootDone();
		host->UpdateDisassembly();
		return false;
	}

void EmuScreen::sendMessage(const char *message, const char *value) {
	// External commands, like from the Windows UI.
	if (!strcmp(message, "pause")) {
		screenManager()->push(new GamePauseScreen(gamePath_));
	} else if (!strcmp(message, "stop")) {
		// We will push MainScreen in update().
		PSP_Shutdown();
	} else if (!strcmp(message, "reset")) {
		PSP_Shutdown();
		std::string resetError;
		if (!PSP_Init(PSP_CoreParameter(), &resetError)) {
			ELOG("Error resetting: %s", resetError.c_str());
			screenManager()->switchScreen(new MainScreen());
			return;
		}
		host->BootDone();
		host->UpdateDisassembly();
#ifdef _WIN32
		if (g_Config.bAutoRun) {
			Core_EnableStepping(false);
		} else {
			Core_EnableStepping(true);
		}
#endif
	}
	else if (!strcmp(message, "boot")) {
		PSP_Shutdown();
		bootGame(value);
	}
	else if (!strcmp(message, "control mapping")) {
		UpdateUIState(UISTATE_MENU);
		screenManager()->push(new ControlMappingScreen());
	}
	else if (!strcmp(message, "settings")) {
		UpdateUIState(UISTATE_MENU);
		screenManager()->push(new GameSettingsScreen(gamePath_));
	}
	else if (!strcmp(message, "gpu resized")) {
		if (gpu) gpu->Resized();
	}
	else if (!strcmp(message, "gpu clear cache")) {
		if (gpu) gpu->ClearCacheNextFrame();
	}
	else if (!strcmp(message, "gpu dump next frame")) {
		if (gpu) gpu->DumpNextFrame();
	}
}

EmuScreen::~EmuScreen()
{
	if (!invalid_) {
		// If we were invalid, it would already be shutdown.
		host->PrepareShutdown();
		PSP_Shutdown();
	}
}

void EmuScreen::checkPowerDown() {
	if (coreState == CORE_POWERDOWN && !PSP_IsIniting()) {
		if (PSP_IsInited()) {
			PSP_Shutdown();
		}
		ILOG("SELF-POWERDOWN!");
		screenManager()->switchScreen(new MainScreen());
		bootPending_ = false;
		invalid_ = true;
	}
}

void EmuThread::stopGame()
{
	Core_Stop();
	gameMutex->lock();
	gameRunning = false;

	PSP_Shutdown();

	// TODO
	//The CPU should return when a game is stopped and cleanup should be done here,
	//so we can restart the plugins (or load new ones) for the next game
	frames_ = 0;

	gameMutex->unlock();
}

bool PSP_InitUpdate(std::string *error_string) {
	if (pspIsInited || !pspIsIniting) {
		return true;
	}

	if (g_Config.bSeparateCPUThread && !CPU_IsReady()) {
		return false;
	}

	bool success = coreParameter.fileToStart != "";
	*error_string = coreParameter.errorString;
	if (success) {
		success = GPU_Init();
		if (!success) {
			PSP_Shutdown();
			*error_string = "Unable to initialize rendering engine.";
		}
	}
	pspIsInited = success;
	pspIsIniting = false;
	return true;
}

void EmuThread::Shutdown()
{
	host->PrepareShutdown();
	PSP_Shutdown();
	FinalShutdown();
}

//.........这里部分代码省略.........
		else
		{
			if (!strcmp(argv[i], "--help") || !strcmp(argv[i], "-h"))
				printUsage(argv[0], NULL);
			else
			{
				std::string reason = "Unexpected argument " + std::string(argv[i]);
				printUsage(argv[0], reason.c_str());
			}
			return 1;
		}
	}

	if (readMount)
	{
		printUsage(argv[0], "Missing argument after -m");
		return 1;
	}
	if (!bootFilename)
	{
		printUsage(argv[0], argc <= 1 ? NULL : "No executable specified");
		return 1;
	}

	HeadlessHost *headlessHost = useGraphics ? new HEADLESSHOST_CLASS() : new HeadlessHost();
	host = headlessHost;
	host->InitGL();

	LogManager::Init();
	LogManager *logman = LogManager::GetInstance();
	
	PrintfLogger *printfLogger = new PrintfLogger();

	for (int i = 0; i < LogTypes::NUMBER_OF_LOGS; i++)
	{
		LogTypes::LOG_TYPE type = (LogTypes::LOG_TYPE)i;
		logman->SetEnable(type, fullLog);
		logman->SetLogLevel(type, LogTypes::LDEBUG);
		logman->AddListener(type, printfLogger);
	}

	CoreParameter coreParameter;
	coreParameter.fileToStart = bootFilename;
	coreParameter.mountIso = mountIso ? mountIso : "";
	coreParameter.startPaused = false;
	coreParameter.cpuCore = useJit ? CPU_JIT : (fastInterpreter ? CPU_FASTINTERPRETER : CPU_INTERPRETER);
	coreParameter.gpuCore = headlessHost->isGLWorking() ? GPU_GLES : GPU_NULL;
	coreParameter.enableSound = false;
	coreParameter.headLess = true;
	coreParameter.printfEmuLog = true;

	g_Config.bEnableSound = false;
	g_Config.bFirstRun = false;
	g_Config.bIgnoreBadMemAccess = true;

	std::string error_string;

	if (!PSP_Init(coreParameter, &error_string)) {
		fprintf(stderr, "Failed to start %s. Error: %s\n", coreParameter.fileToStart.c_str(), error_string.c_str());
		printf("TESTERROR\n");
		return 1;
	}

	host->BootDone();

	coreState = CORE_RUNNING;
	while (coreState == CORE_RUNNING)
	{
		// Run for a frame at a time, just because.
		u64 nowTicks = CoreTiming::GetTicks();
		u64 frameTicks = usToCycles(1000000/60);
		mipsr4k.RunLoopUntil(nowTicks + frameTicks);

		// If we were rendering, this might be a nice time to do something about it.
		if (coreState == CORE_NEXTFRAME)
			coreState = CORE_RUNNING;
	}

	host->ShutdownGL();
	PSP_Shutdown();

	delete host;
	host = NULL;
	headlessHost = NULL;

	if (autoCompare)
	{
		std::string expect_filename = std::string(bootFilename).substr(strlen(bootFilename - 4)) + ".expected";
		if (File::Exists(expect_filename))
		{
			// TODO: Do the compare here
		}
		else
		{
			fprintf(stderr, "Expectation file %s not found", expect_filename.c_str());
		}
	}

	return 0;
}

void RunTests()
{
	std::string output;

#ifdef IOS
	const std::string baseDirectory = g_Config.flash0Directory + "../";
#else
	const std::string baseDirectory = g_Config.memStickDirectory;
#endif

	CoreParameter coreParam;
	coreParam.cpuCore = g_Config.bJit ? CPU_JIT : CPU_INTERPRETER;
	coreParam.gpuCore = g_Config.bSoftwareRendering ? GPU_SOFTWARE : GPU_GLES;
	coreParam.enableSound = g_Config.bEnableSound;
	coreParam.graphicsContext = PSP_CoreParameter().graphicsContext;
	coreParam.mountIso = "";
	coreParam.mountRoot = baseDirectory + "pspautotests/";
	coreParam.startPaused = false;
	coreParam.printfEmuLog = false;
	coreParam.headLess = true;
	coreParam.renderWidth = 480;
	coreParam.renderHeight = 272;
	coreParam.pixelWidth = 480;
	coreParam.pixelHeight = 272;
	coreParam.collectEmuLog = &output;
	coreParam.unthrottle = true;
	coreParam.updateRecent = false;

	// Never report from tests.
	std::string savedReportHost = g_Config.sReportHost;
	g_Config.sReportHost = "";

	for (size_t i = 0; i < ARRAY_SIZE(testsToRun); i++) {
		const char *testName = testsToRun[i];
		coreParam.fileToStart = baseDirectory + "pspautotests/tests/" + testName + ".prx";
		std::string expectedFile = baseDirectory + "pspautotests/tests/" + testName + ".expected";

		ILOG("Preparing to execute %s", testName);
		std::string error_string;
		output = "";
		if (!PSP_Init(coreParam, &error_string)) {
			ELOG("Failed to init unittest %s : %s", testsToRun[i], error_string.c_str());
			PSP_CoreParameter().pixelWidth = pixel_xres;
			PSP_CoreParameter().pixelHeight = pixel_yres;
			return;
		}

		// Run the emu until the test exits
		while (true) {
			int blockTicks = usToCycles(1000000 / 10);
			while (coreState == CORE_RUNNING) {
				PSP_RunLoopFor(blockTicks);
			}
			// Hopefully coreState is now CORE_NEXTFRAME
			if (coreState == CORE_NEXTFRAME) {
				// set back to running for the next frame
				coreState = CORE_RUNNING;
			} else if (coreState == CORE_POWERDOWN)	{
				ILOG("Finished running test %s", testName);
				break;
			}
		}
	
		std::ifstream expected(expectedFile.c_str(), std::ios_base::in);
		if (!expected) {
			ELOG("Error opening expectedFile %s", expectedFile.c_str());
			break;
		}

		std::istringstream logoutput(output);

		int line = 0;
		while (true) {
			++line;
			std::string e, o;
			std::getline(expected, e);
			std::getline(logoutput, o);
			// Remove stray returns
			e = TrimNewlines(e);
			o = TrimNewlines(o);
			if (e != o) {
				ELOG("DIFF on line %i!", line);
				ELOG("O: %s", o.c_str());
				ELOG("E: %s", e.c_str());
			}
			if (expected.eof()) {
				break;
			}
			if (logoutput.eof()) {
				break;
			}
		}
		PSP_Shutdown();
	}
	glViewport(0,0,pixel_xres,pixel_yres);
	PSP_CoreParameter().pixelWidth = pixel_xres;
	PSP_CoreParameter().pixelHeight = pixel_yres;
	PSP_CoreParameter().headLess = false;
	g_Config.sReportHost = savedReportHost;
}

void EmuScreen::render() {
	if (invalid_)
		return;

	if (PSP_CoreParameter().freezeNext) {
		PSP_CoreParameter().frozen = true;
		PSP_CoreParameter().freezeNext = false;
		SaveState::SaveToRam(freezeState_);
	} else if (PSP_CoreParameter().frozen) {
		if (CChunkFileReader::ERROR_NONE != SaveState::LoadFromRam(freezeState_)) {
			ERROR_LOG(HLE, "Failed to load freeze state. Unfreezing.");
			PSP_CoreParameter().frozen = false;
		}
	}

	// Reapply the graphics state of the PSP
	ReapplyGfxState();

	// We just run the CPU until we get to vblank. This will quickly sync up pretty nicely.
	// The actual number of cycles doesn't matter so much here as we will break due to CORE_NEXTFRAME, most of the time hopefully...
	int blockTicks = usToCycles(1000000 / 10);

	// Run until CORE_NEXTFRAME
	while (coreState == CORE_RUNNING) {
		PSP_RunLoopFor(blockTicks);
	}
	// Hopefully coreState is now CORE_NEXTFRAME
	if (coreState == CORE_NEXTFRAME) {
		// set back to running for the next frame
		coreState = CORE_RUNNING;
	} else if (coreState == CORE_POWERDOWN)	{
		PSP_Shutdown();
		ILOG("SELF-POWERDOWN!");
		screenManager()->switchScreen(new MainScreen());
		invalid_ = true;
	}

	if (invalid_)
		return;

	bool useBufferedRendering = g_Config.iRenderingMode != FB_NON_BUFFERED_MODE;
	if (useBufferedRendering)
		fbo_unbind();

	UIShader_Prepare();

	uiTexture->Bind(0);

	glstate.viewport.set(0, 0, pixel_xres, pixel_yres);
	glstate.viewport.restore();

	ui_draw2d.Begin(UIShader_Get(), DBMODE_NORMAL);

	if (root_) {
		UI::LayoutViewHierarchy(*screenManager()->getUIContext(), root_);
		root_->Draw(*screenManager()->getUIContext());
	}

	if (!osm.IsEmpty()) {
		osm.Draw(ui_draw2d, screenManager()->getUIContext()->GetBounds());
	}

	if (g_Config.bShowDebugStats) {
		char statbuf[4096] = {0};
		__DisplayGetDebugStats(statbuf);
		if (statbuf[4095]) {
			ELOG("Statbuf too small! :(");
		}
		ui_draw2d.SetFontScale(.7f, .7f);
		ui_draw2d.DrawText(UBUNTU24, statbuf, 11, 11, 0xc0000000, FLAG_DYNAMIC_ASCII);
		ui_draw2d.DrawText(UBUNTU24, statbuf, 10, 10, 0xFFFFFFFF, FLAG_DYNAMIC_ASCII);
		ui_draw2d.SetFontScale(1.0f, 1.0f);
	}

	if (g_Config.iShowFPSCounter) {
		float vps, fps, actual_fps;
		__DisplayGetFPS(&vps, &fps, &actual_fps);
		char fpsbuf[256];
		switch (g_Config.iShowFPSCounter) {
		case 1:
			sprintf(fpsbuf, "Speed: %0.1f%%", vps / (59.94f / 100.0f)); break;
		case 2:
			sprintf(fpsbuf, "FPS: %0.1f", actual_fps); break;
		case 3:
			sprintf(fpsbuf, "%0.0f/%0.0f (%0.1f%%)", actual_fps, fps, vps / (59.94f / 100.0f)); break;
		default:
			return;
		}

		const Bounds &bounds = screenManager()->getUIContext()->GetBounds();
		ui_draw2d.SetFontScale(0.7f, 0.7f);
		ui_draw2d.DrawText(UBUNTU24, fpsbuf, bounds.x2() - 8, 12, 0xc0000000, ALIGN_TOPRIGHT | FLAG_DYNAMIC_ASCII);
		ui_draw2d.DrawText(UBUNTU24, fpsbuf, bounds.x2() - 10, 10, 0xFF3fFF3f, ALIGN_TOPRIGHT | FLAG_DYNAMIC_ASCII);
		ui_draw2d.SetFontScale(1.0f, 1.0f);
	}

	glsl_bind(UIShader_Get());
	ui_draw2d.End();
	ui_draw2d.Flush();

//.........这里部分代码省略.........

//.........这里部分代码省略.........
	bool glWorking = host->InitGL(&error_string);

	LogManager::Init();
	LogManager *logman = LogManager::GetInstance();
	
	PrintfLogger *printfLogger = new PrintfLogger();

	for (int i = 0; i < LogTypes::NUMBER_OF_LOGS; i++)
	{
		LogTypes::LOG_TYPE type = (LogTypes::LOG_TYPE)i;
		logman->SetEnable(type, fullLog);
		logman->SetLogLevel(type, LogTypes::LDEBUG);
		logman->AddListener(type, printfLogger);
	}

	CoreParameter coreParameter;
	coreParameter.cpuCore = useJit ? CPU_JIT : CPU_INTERPRETER;
	coreParameter.gpuCore = glWorking ? GPU_GLES : GPU_NULL;
	coreParameter.enableSound = false;
	coreParameter.fileToStart = bootFilename;
	coreParameter.mountIso = mountIso ? mountIso : "";
	coreParameter.startPaused = false;
	coreParameter.enableDebugging = false;
	coreParameter.printfEmuLog = true;
	coreParameter.headLess = true;
	coreParameter.renderWidth = 480;
	coreParameter.renderHeight = 272;
	coreParameter.outputWidth = 480;
	coreParameter.outputHeight = 272;
	coreParameter.pixelWidth = 480;
	coreParameter.pixelHeight = 272;
	coreParameter.unthrottle = true;

	g_Config.bEnableSound = false;
	g_Config.bFirstRun = false;
	g_Config.bIgnoreBadMemAccess = true;
	// Never report from tests.
	g_Config.sReportHost = "";
	g_Config.bAutoSaveSymbolMap = false;
	g_Config.iRenderingMode = true;
	g_Config.bHardwareTransform = true;
#ifdef USING_GLES2
	g_Config.iAnisotropyLevel = 0;
#else
	g_Config.iAnisotropyLevel = 8;
#endif
	g_Config.bVertexCache = true;
	g_Config.bTrueColor = true;
	g_Config.ilanguage = PSP_SYSTEMPARAM_LANGUAGE_ENGLISH;
	g_Config.iTimeFormat = PSP_SYSTEMPARAM_TIME_FORMAT_24HR;
	g_Config.bEncryptSave = true;
	g_Config.sNickName = "shadow";
	g_Config.iTimeZone = 60;
	g_Config.iDateFormat = PSP_SYSTEMPARAM_DATE_FORMAT_DDMMYYYY;
	g_Config.iButtonPreference = PSP_SYSTEMPARAM_BUTTON_CROSS;
	g_Config.iLockParentalLevel = 9;

#if defined(ANDROID)
#elif defined(BLACKBERRY) || defined(__SYMBIAN32__)
#elif !defined(_WIN32)
	g_Config.memCardDirectory = std::string(getenv("HOME"))+"/.ppsspp/";
	g_Config.flashDirectory = g_Config.memCardDirectory+"/flash/";
#endif

	if (!PSP_Init(coreParameter, &error_string)) {
		fprintf(stderr, "Failed to start %s. Error: %s\n", coreParameter.fileToStart.c_str(), error_string.c_str());
		printf("TESTERROR\n");
		return 1;
	}

	host->BootDone();

	if (screenshotFilename != 0)
		headlessHost->SetComparisonScreenshot(screenshotFilename);

	coreState = CORE_RUNNING;
	while (coreState == CORE_RUNNING)
	{
		int blockTicks = usToCycles(1000000 / 10);
		PSP_RunLoopFor(blockTicks);

		// If we were rendering, this might be a nice time to do something about it.
		if (coreState == CORE_NEXTFRAME) {
			coreState = CORE_RUNNING;
			headlessHost->SwapBuffers();
		}
	}

	host->ShutdownGL();
	PSP_Shutdown();

	delete host;
	host = NULL;
	headlessHost = NULL;

	if (autoCompare)
		CompareOutput(bootFilename);

	return 0;
}