TypeScript os.freemem函數代碼示例

	public computeStartupMetrics(): void {
		const now = Date.now();
		const initialStartup = !!this.isInitialStartup;
		const start = initialStartup ? this.start : this.windowLoad;

		let totalmem: number;
		let freemem: number;
		let cpus: { count: number; speed: number; model: string; };
		let platform: string;
		let release: string;
		let loadavg: number[];
		let meminfo: IMemoryInfo;

		try {
			totalmem = os.totalmem();
			freemem = os.freemem();
			platform = os.platform();
			release = os.release();
			loadavg = os.loadavg();
			meminfo = process.getProcessMemoryInfo();

			const rawCpus = os.cpus();
			if (rawCpus && rawCpus.length > 0) {
				cpus = { count: rawCpus.length, speed: rawCpus[0].speed, model: rawCpus[0].model };
			}
		} catch (error) {
			console.error(error); // be on the safe side with these hardware method calls
		}

		this._startupMetrics = {
			version: 1,
			ellapsed: Math.round(this.workbenchStarted.getTime() - start.getTime()),
			timers: {
				ellapsedExtensions: Math.round(this.afterExtensionLoad.getTime() - this.beforeExtensionLoad.getTime()),
				ellapsedExtensionsReady: Math.round(this.afterExtensionLoad.getTime() - start.getTime()),
				ellapsedRequire: Math.round(this.afterLoadWorkbenchMain.getTime() - this.beforeLoadWorkbenchMain.getTime()),
				ellapsedViewletRestore: Math.round(this.restoreViewletDuration),
				ellapsedEditorRestore: Math.round(this.restoreEditorsDuration),
				ellapsedWorkbench: Math.round(this.workbenchStarted.getTime() - this.beforeWorkbenchOpen.getTime()),
				ellapsedWindowLoadToRequire: Math.round(this.beforeLoadWorkbenchMain.getTime() - this.windowLoad.getTime()),
				ellapsedTimersToTimersComputed: Date.now() - now
			},
			platform,
			release,
			totalmem,
			freemem,
			meminfo,
			cpus,
			loadavg,
			initialStartup,
			hasAccessibilitySupport: !!this.hasAccessibilitySupport,
			emptyWorkbench: this.isEmptyWorkbench
		};

		if (initialStartup) {
			this._startupMetrics.timers.ellapsedAppReady = Math.round(this.appReady.getTime() - this.start.getTime());
			this._startupMetrics.timers.ellapsedWindowLoad = Math.round(this.windowLoad.getTime() - this.appReady.getTime());
		}
	}

/**
 * Init app
 */
async function init(): Promise<State> {
	console.log('Welcome to Misskey!\n');

	console.log(chalk.bold('Misskey Core <aoi>'));

	let warn = false;

	// Get commit info
	const commit = await prominence(git).getLastCommit();
	console.log(`commit: ${commit.shortHash} ${commit.author.name} <${commit.author.email}>`);
	console.log(`        ${new Date(parseInt(commit.committedOn, 10) * 1000)}`);

	console.log('\nInitializing...\n');

	if (IS_DEBUG) {
		logWarn('It is not in the Production mode. Do not use in the Production environment.');
	}

	logInfo(`environment: ${env}`);

	// Get machine info
	const totalmem = (os.totalmem() / 1024 / 1024 / 1024).toFixed(1);
	const freemem = (os.freemem() / 1024 / 1024 / 1024).toFixed(1);
	logInfo(`MACHINE: ${os.hostname()}`);
	logInfo(`MACHINE: CPU: ${os.cpus().length}core`);
	logInfo(`MACHINE: MEM: ${totalmem}GB (available: ${freemem}GB)`);

	if (!fs.existsSync(require('./config').configPath)) {
		logFailed('Configuration not found');
		return State.failed;
	}

	// Load config
	const conf = require('./config').default;

	logDone('Success to load configuration');
	logInfo(`maintainer: ${conf.maintainer}`);

	checkDependencies();

	// Check if a port is being used
	if (await portUsed.check(conf.port)) {
		logFailed(`Port: ${conf.port} is already used!`);
		return State.failed;
	}

	// Try to connect to MongoDB
	try {
		await initdb(conf);
		logDone('Success to connect to MongoDB');
	} catch (e) {
		logFailed(`MongoDB: ${e}`);
		return State.failed;
	}

	return warn ? State.warn : State.success;
}

	public static show(): void {
		const totalmem = (os.totalmem() / 1024 / 1024 / 1024).toFixed(1);
		const freemem = (os.freemem() / 1024 / 1024 / 1024).toFixed(1);
		const logger = new Logger('Machine');
		logger.info(`Hostname: ${os.hostname()}`);
		logger.info(`Platform: ${process.platform}`);
		logger.info(`Architecture: ${process.arch}`);
		logger.info(`CPU: ${os.cpus().length} core`);
		logger.info(`MEM: ${totalmem}GB (available: ${freemem}GB)`);
	}

export function logging(args) {
  const pid = process.pid;
  const processMem = process.memoryUsage();
  const rss = processMem.rss;
  const heapTotal = processMem.heapTotal;
  const heapUsed = processMem.heapUsed;
  const osFreeMem = os.freemem();
  const osTotalMem = os.totalmem();
  const la = os.loadavg();
  return `${pid},${args.time},${rss},${heapUsed},${heapTotal},${osFreeMem},${osTotalMem},${la[0]},${la[1]},${la[2]}\n`;
}

 ,(msg: rcf.IMessage): void => {
     console.log(new Date().toISOString() + ': msg-rcvd: ' + JSON.stringify(msg));
     let gMsg: GridMessage = msg.body;
     if (gMsg.type === 'launch-task') {
         let task: ITask = gMsg.content;
         let TrackingId = tasksTracker.beginTracking(task);
         let taskExec = getTaskExec(nodeId, gridDB);
         taskExec.on("error", (err: any) => {
             console.error(new Date().toISOString() + ": !!! Error running task " + JSON.stringify(task) + ": " + JSON.stringify(err) + " :-(");
             // TODO: sent error message to the server
         }).on("exec-params", (taskExecParams: ITaskExecParams) => {
             tasksTracker.updateTracking(TrackingId, {cmd: taskExecParams.cmd, envJSON: taskExecParams.envJSON});
             console.log(new Date().toISOString() + ": running task " + JSON.stringify(task) + " with exec-params=\n" + JSON.stringify(taskExecParams, null, 2));
         }).on("started", (pid: number) => {
             tasksTracker.updateTracking(TrackingId, {pid});
             console.log(new Date().toISOString() + ": task " + JSON.stringify(task) + " started with pid=" + pid);
         }).on("finished", (retCode: number) => {
             console.log(new Date().toISOString() + ": task " + JSON.stringify(task) + " finished with retCode=" + retCode);
         }).run(task)
         .then(() => {
             tasksTracker.endTracking(TrackingId);
             notifyDispatcherTaskComplete(task)
             .then(() => {
                 console.log(new Date().toISOString() + ': <task-complete> notification for task ' + JSON.stringify(task) + ' successfully sent to the dispatcher :-)');
             }).catch((err: any) => {
                 console.error(new Date().toISOString() + ': !!! Error sending <task-complete> notification for task '+ JSON.stringify(task) + ' to the dispatcher :-(');
             });
         });
     } else if (gMsg.type === 'kill-processes-tree') {
         let pids: number[] = gMsg.content;
         killProcessesTree(pids);
     } else if (gMsg.type === 'node-query-status') {
         let request: NodeQueryStatusRequest = gMsg.content;
         let response: NodeQueryStatusResponse = {
             QueryId: request.QueryId
             ,Status: {
                 FreeMem: os.freemem()
                 ,TotalMem: os.totalmem()
                 ,UptimeSec: os.uptime()
                 ,RunningTasks: tasksTracker.toJSON()                     
             }
         };
         sendNodeQueryStatusResponse(response)
         .then(() => {
         }).catch((err: any) => {
             console.error(new Date().toISOString() + ': !!! Error sending back <node-query-status> message: ' + JSON.stringify(err));
         });
     }
 },{})

export function getMachineInfo(): IMachineInfo {
	const MB = 1024 * 1024;
	const GB = 1024 * MB;

	const machineInfo: IMachineInfo = {
		os: `${os.type()} ${os.arch()} ${os.release()}`,
		memory: `${(os.totalmem() / GB).toFixed(2)}GB (${(os.freemem() / GB).toFixed(2)}GB free)`,
		vmHint: `${Math.round((virtualMachineHint.value() * 100))}%`,
	};

	const cpus = os.cpus();
	if (cpus && cpus.length > 0) {
		machineInfo.cpus = `${cpus[0].model} (${cpus.length} x ${cpus[0].speed})`;
	}

	return machineInfo;
}

function progress_report() {
  var now = new Date();
  var period = (now.getTime() - server.timer.mark) / 1000
  var rate = server.timer.hits / period
  var stats = {
    type: "status_report",
    server: settings.api.hostname,
    version: settings.api.version,
    date: now.toISOString(),
    msg_rate: rate,
    client_count: server.clients.list.length,
    freemem: os.freemem()
  }
  db.activity_add(stats)
  var srep = 'status report - ' + rate.toFixed(1) + ' hits/sec. ' +
    server.clients.list.length + ' clients.'
  console.log(srep)
  pump(stats)
}

		osUtils.cpuUsage(cpuUsage => {
			const disk = diskusage.checkSync(os.platform() == 'win32' ? 'c:' : '/');
			event.stream.emit('status', {
				node: {
					release: (process as any).release.name,
					lts: (process as any).release.lts,
					version: process.version
				},
				machine: os.hostname(),
				pid: process.pid,
				uptime: process.uptime(),
				cpuUsage: cpuUsage,
				mem: {
					total: os.totalmem(),
					free: os.freemem()
				},
				disk
			});
		});

function formatEnvironment(info: IMainProcessInfo): string {
	const MB = 1024 * 1024;
	const GB = 1024 * MB;

	const output: string[] = [];
	output.push(`Version:          ${pkg.name} ${pkg.version} (${product.commit || 'Commit unknown'}, ${product.date || 'Date unknown'})`);
	output.push(`OS Version:       ${os.type()} ${os.arch()} ${os.release()})`);
	const cpus = os.cpus();
	if (cpus && cpus.length > 0) {
		output.push(`CPUs:             ${cpus[0].model} (${cpus.length} x ${cpus[0].speed})`);
	}
	output.push(`Memory (System):  ${(os.totalmem() / GB).toFixed(2)}GB (${(os.freemem() / GB).toFixed(2)}GB free)`);
	if (!isWindows) {
		output.push(`Load (avg):       ${os.loadavg().map(l => Math.round(l)).join(', ')}`); // only provided on Linux/macOS
	}
	output.push(`VM:               ${Math.round((virtualMachineHint.value() * 100))}%`);
	output.push(`Screen Reader:    ${app.isAccessibilitySupportEnabled() ? 'yes' : 'no'}`);

	return output.join('\n');
}

async function main () {
  let ipcTestResult: string
  try {
    await doctor.testTcp()
    ipcTestResult = 'PASS'
  } catch (err) {
    console.log(err)
    ipcTestResult = 'FAIL. Please check your tcp network, Wechaty need to listen on localhost and connect to it.'
  }

  console.log(`
  #### Wechaty Doctor

  1. Wechaty version: ${wechaty.version()}
  2. ${os.type()} ${os.arch()} version ${os.release()} memory ${Math.floor(os.freemem() / 1024 / 1024)}/${Math.floor(os.totalmem() / 1024 / 1024)} MB
  3. Docker: ${config.docker}
  4. Node version: ${process.version}
  5. Tcp IPC TEST: ${ipcTestResult}

  `)

}

function getSystemInfo(info: IMainProcessInfo): SystemInfo {
	const MB = 1024 * 1024;
	const GB = 1024 * MB;

	const systemInfo: SystemInfo = {
		'Memory (System)': `${(os.totalmem() / GB).toFixed(2)}GB (${(os.freemem() / GB).toFixed(2)}GB free)`,
		VM: `${Math.round((virtualMachineHint.value() * 100))}%`,
		'Screen Reader': `${app.isAccessibilitySupportEnabled() ? 'yes' : 'no'}`,
		'Process Argv': `${info.mainArguments.join(' ')}`
	};

	const cpus = os.cpus();
	if (cpus && cpus.length > 0) {
		systemInfo.CPUs = `${cpus[0].model} (${cpus.length} x ${cpus[0].speed})`;
	}

	if (!isWindows) {
		systemInfo['Load (avg)'] = `${os.loadavg().map(l => Math.round(l)).join(', ')}`;
	}


	return systemInfo;
}

        result = os.homedir();
        result = os.endianness();
        result = os.hostname();
        result = os.type();
        result = os.platform();
        result = os.arch();
        result = os.release();
        result = os.EOL;
    }

    {
        let result: number;

        result = os.uptime();
        result = os.totalmem();
        result = os.freemem();
    }

    {
        let result: number[];

        result = os.loadavg();
    }

    {
        let result: os.CpuInfo[];

        result = os.cpus();
    }

    {

	public _computeStartupMetrics(): void {
		const now = Date.now();
		const initialStartup = !!this.isInitialStartup;
		const start = initialStartup ? this.start : this.windowLoad;

		let totalmem: number;
		let freemem: number;
		let cpus: { count: number; speed: number; model: string; };
		let platform: string;
		let release: string;
		let arch: string;
		let loadavg: number[];
		let meminfo: IMemoryInfo;
		let isVMLikelyhood: number;

		try {
			totalmem = os.totalmem();
			freemem = os.freemem();
			platform = os.platform();
			release = os.release();
			arch = os.arch();
			loadavg = os.loadavg();
			meminfo = process.getProcessMemoryInfo();

			isVMLikelyhood = Math.round((virtualMachineHint.value() * 100));

			const rawCpus = os.cpus();
			if (rawCpus && rawCpus.length > 0) {
				cpus = { count: rawCpus.length, speed: rawCpus[0].speed, model: rawCpus[0].model };
			}
		} catch (error) {
			// ignore, be on the safe side with these hardware method calls
		}

		this._startupMetrics = {
			version: 1,
			ellapsed: this.workbenchStarted - start,
			timers: {
				ellapsedExtensions: this.afterExtensionLoad - this.beforeExtensionLoad,
				ellapsedExtensionsReady: this.afterExtensionLoad - start,
				ellapsedRequire: this.afterLoadWorkbenchMain - this.beforeLoadWorkbenchMain,
				ellapsedViewletRestore: this.restoreViewletDuration,
				ellapsedEditorRestore: this.restoreEditorsDuration,
				ellapsedWorkbench: this.workbenchStarted - this.beforeWorkbenchOpen,
				ellapsedWindowLoadToRequire: this.beforeLoadWorkbenchMain - this.windowLoad,
				ellapsedTimersToTimersComputed: Date.now() - now
			},
			platform,
			release,
			arch,
			totalmem,
			freemem,
			meminfo,
			cpus,
			loadavg,
			initialStartup,
			isVMLikelyhood,
			hasAccessibilitySupport: !!this.hasAccessibilitySupport,
			emptyWorkbench: this.isEmptyWorkbench
		};

		if (initialStartup) {
			this._startupMetrics.timers.ellapsedAppReady = this.appReady - this.start;
			this._startupMetrics.timers.ellapsedWindowLoad = this.windowLoad - this.appReady;
		}
	}

	public _computeStartupMetrics(): void {
		const now = Date.now();
		const initialStartup = !!this.isInitialStartup;
		const start = initialStartup ? this.start : this.windowLoad;

		let totalmem: number;
		let freemem: number;
		let cpus: { count: number; speed: number; model: string; };
		let platform: string;
		let release: string;
		let arch: string;
		let loadavg: number[];
		let meminfo: IMemoryInfo;
		let isVMLikelyhood: number;

		try {
			totalmem = os.totalmem();
			freemem = os.freemem();
			platform = os.platform();
			release = os.release();
			arch = os.arch();
			loadavg = os.loadavg();
			meminfo = process.getProcessMemoryInfo();

			isVMLikelyhood = Math.round((virtualMachineHint.value() * 100));

			const rawCpus = os.cpus();
			if (rawCpus && rawCpus.length > 0) {
				cpus = { count: rawCpus.length, speed: rawCpus[0].speed, model: rawCpus[0].model };
			}
		} catch (error) {
			// ignore, be on the safe side with these hardware method calls
		}

		let nlsStart = perf.getEntry('mark', 'nlsGeneration:start');
		let nlsEnd = perf.getEntry('mark', 'nlsGeneration:end');
		let nlsTime = nlsStart && nlsEnd ? nlsEnd.startTime - nlsStart.startTime : 0;
		this._startupMetrics = {
			version: 1,
			ellapsed: perf.getEntry('mark', 'didStartWorkbench').startTime - start,
			timers: {
				ellapsedExtensions: perf.getDuration('willLoadExtensions', 'didLoadExtensions'),
				ellapsedExtensionsReady: perf.getEntry('mark', 'didLoadExtensions').startTime - start,
				ellapsedRequire: perf.getDuration('willLoadWorkbenchMain', 'didLoadWorkbenchMain'),
				ellapsedEditorRestore: perf.getDuration('willRestoreEditors', 'didRestoreEditors'),
				ellapsedViewletRestore: perf.getDuration('willRestoreViewlet', 'didRestoreViewlet'),
				ellapsedWorkbench: perf.getDuration('willStartWorkbench', 'didStartWorkbench'),
				ellapsedWindowLoadToRequire: perf.getEntry('mark', 'willLoadWorkbenchMain').startTime - this.windowLoad,
				ellapsedTimersToTimersComputed: Date.now() - now,
				ellapsedNlsGeneration: nlsTime
			},
			platform,
			release,
			arch,
			totalmem,
			freemem,
			meminfo,
			cpus,
			loadavg,
			initialStartup,
			isVMLikelyhood,
			hasAccessibilitySupport: !!this.hasAccessibilitySupport,
			emptyWorkbench: this.isEmptyWorkbench
		};

		if (initialStartup) {
			this._startupMetrics.timers.ellapsedAppReady = perf.getDuration('main:started', 'main:appReady');
			this._startupMetrics.timers.ellapsedWindowLoad = this.windowLoad - perf.getEntry('mark', 'main:appReady').startTime;
		}
	}

export function install_optional_cpu_and_memory_usage_node(server: any) {

    const engine = server.engine;
    assert(engine instanceof ServerEngine);

    let usage: any;
    try {
        usage = require("usage");
    } catch (err) {
        console.log("err", err.message);
        usage = null;
        // xx return;
    }

    const addressSpace = engine.addressSpace;

    const namespace = addressSpace.getOwnNamespace();

    const folder = addressSpace.findNode(ObjectIds.Server_VendorServerInfo);

    let usage_result = {memory: 0, cpu: 100};

    const pid = process.pid;

    if (usage) {

        const options = {keepHistory: true};
        setInterval(() => {
            usage.lookup(pid, options,  (err: Error| null, result: any) => {
                usage_result = result;
                console.log("result Used Memory: ", humanize.filesize(result.memory), " CPU ", Math.round(result.cpu), " %");
                if (err) { console.log("err ", err); }
            });
        }, 1000);

        namespace.addVariable({

            organizedBy: folder,

            browseName:    "CPUUsage",
            dataType:      "Double",
            description:   "Current CPU usage of the server process",

            minimumSamplingInterval: 1000,
            nodeId:        "s=CPUUsage",
            value: {
                get: () => {
                    if (!usage_result) {
                        return StatusCodes.BadResourceUnavailable;
                    }
                    return new Variant({dataType: DataType.Double, value: Math.round(usage_result.cpu)});
                }
            }
        });

        addVariableWithHumanizeText(namespace, {
            browseName:  "MemoryUsage",
            dataType:    "Number",
            description: "Current memory usage of the server process",
            minimumSamplingInterval: 1000,
            nodeId:      "s=MemoryUsage",
            organizedBy: folder,
            value: {
                get: () => {
                    if (!usage_result) {
                        return StatusCodes.BadResourceUnavailable;
                    }
                    return new Variant({dataType: DataType.UInt32, value: usage_result.memory});
                }
            }
        });

    } else {
        console.log("skipping installation of cpu_usage and memory_usage nodes");
    }

    namespace.addVariable({
        organizedBy: folder,

        browseName: "PercentageMemoryUsed",
        dataType: "Number",
        description: "% of  memory used by the server",
        minimumSamplingInterval: 1000,
        nodeId: "s=PercentageMemoryUsed",
        value: {
            get() {
                const percent_used = Math.round((os.totalmem() - os.freemem()) / os.totalmem() * 100);
                return new Variant({dataType: DataType.Double, value: percent_used});
            }
        }
    });

    addVariableWithHumanizeText(namespace, {
        organizedBy: folder,

        accessLevel: "CurrentRead",
        browseName: "SystemMemoryTotal",
        dataType: "Number",
        description: "Total Memory usage of the server",
        minimumSamplingInterval: 1000,
//.........這裏部分代碼省略.........