java.lang.Runtime类的使用及代码示例

x33g5p2x  于2022-01-17 转载在 其他  
字(7.1k)|赞(0)|评价(0)|浏览(188)

本文整理了Java中java.lang.Runtime类的一些代码示例，展示了Runtime类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Runtime类的具体详情如下：
包路径：java.lang.Runtime
类名称：Runtime

Runtime介绍

[英]Allows Java applications to interface with the environment in which they are running. Applications can not create an instance of this class, but they can get a singleton instance by invoking #getRuntime().
[中]允许Java应用程序与运行它们的环境交互。应用程序无法创建此类的实例，但可以通过调用#getRuntime（）获得单例实例。

代码示例

代码示例来源：origin: commons-io/commons-io

  1. /**
  2.  * Opens the process to the operating system.
  3.  *
  4.  * @param cmdAttribs  the command line parameters
  5.  * @return the process
  6.  * @throws IOException if an error occurs
  7.  */
  8. Process openProcess(final String[] cmdAttribs) throws IOException {
  9.   return Runtime.getRuntime().exec(cmdAttribs);
  10. }

代码示例来源：origin: google/guava

  1. @VisibleForTesting
  2.  void addShutdownHook(Thread hook) {
  3.   Runtime.getRuntime().addShutdownHook(hook);
  4.  }
  5. }

代码示例来源：origin: spring-projects/spring-framework

  1. /**
  2.  * Create a new {@code Netty4ClientHttpRequestFactory} with a default
  3.  * {@link NioEventLoopGroup}.
  4.  */
  5. public Netty4ClientHttpRequestFactory() {
  6.   int ioWorkerCount = Runtime.getRuntime().availableProcessors() * 2;
  7.   this.eventLoopGroup = new NioEventLoopGroup(ioWorkerCount);
  8.   this.defaultEventLoopGroup = true;
  9. }

代码示例来源：origin: skylot/jadx

  1. public static boolean isFreeMemoryAvailable() {
  2.   Runtime runtime = Runtime.getRuntime();
  3.   long maxMemory = runtime.maxMemory();
  4.   long totalFree = runtime.freeMemory() + (maxMemory - runtime.totalMemory());
  5.   return totalFree > MIN_FREE_MEMORY;
  6. }

代码示例来源：origin: libgdx/libgdx

  1. @Override
  2. public long getJavaHeap () {
  3.   return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
  4. }

代码示例来源：origin: libgdx/libgdx

  1. /** When true, <code>Runtime.getRuntime().halt(0);</code> is used when the JVM shuts down. This prevents Swing shutdown hooks
  2.  * from causing a deadlock and keeping the JVM alive indefinitely. Default is true. */
  3. public void setHaltOnShutdown (boolean halt) {
  4.   if (halt) {
  5.     if (shutdownHook != null) return;
  6.     shutdownHook = new Thread() {
  7.       public void run () {
  8.         Runtime.getRuntime().halt(0); // Because fuck you, deadlock causing Swing shutdown hooks.
  9.       }
  10.     };
  11.     Runtime.getRuntime().addShutdownHook(shutdownHook);
  12.   } else if (shutdownHook != null) {
  13.     Runtime.getRuntime().removeShutdownHook(shutdownHook);
  14.     shutdownHook = null;
  15.   }
  16. }

代码示例来源：origin: apache/incubator-dubbo

  1. /**
  2.  * Unregister the ShutdownHook
  3.  */
  4. public void unregister() {
  5.   if (registered.get() && registered.compareAndSet(true, false)) {
  6.     Runtime.getRuntime().removeShutdownHook(getDubboShutdownHook());
  7.   }
  8. }

代码示例来源：origin: square/okhttp

  1. /**
  2.   * See FinalizationTester for discussion on how to best trigger GC in tests.
  3.   * https://android.googlesource.com/platform/libcore/+/master/support/src/test/java/libcore/
  4.   * java/lang/ref/FinalizationTester.java
  5.   */
  6.  public static void awaitGarbageCollection() throws Exception {
  7.   Runtime.getRuntime().gc();
  8.   Thread.sleep(100);
  9.   System.runFinalization();
  10.  }
  11. }

代码示例来源：origin: skylot/jadx

  1. public void update() {
  2.   long used = runtime.totalMemory() - runtime.freeMemory();
  3.   int usedKB = (int) (used / 1024);
  4.   setValue(usedKB);
  5.   setString(String.format(textFormat, (usedKB / TWO_TO_20), maxGB));
  6.   if ((used + Utils.MIN_FREE_MEMORY) > runtime.maxMemory()) {
  7.     setForeground(RED);
  8.   } else {
  9.     setForeground(GREEN);
  10.   }
  11. }

代码示例来源：origin: libgdx/libgdx

  1. @Override
  2. public long getJavaHeap () {
  3.   return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
  4. }

代码示例来源：origin: apache/incubator-dubbo

  1. @Override
  2. public Status check() {
  3.   Runtime runtime = Runtime.getRuntime();
  4.   long freeMemory = runtime.freeMemory();
  5.   long totalMemory = runtime.totalMemory();
  6.   long maxMemory = runtime.maxMemory();
  7.   boolean ok = (maxMemory - (totalMemory - freeMemory) > 2048); // Alarm when spare memory < 2M
  8.   String msg = "max:" + (maxMemory / 1024 / 1024) + "M,total:"
  9.       + (totalMemory / 1024 / 1024) + "M,used:" + ((totalMemory / 1024 / 1024) - (freeMemory / 1024 / 1024)) + "M,free:" + (freeMemory / 1024 / 1024) + "M";
  10.   return new Status(ok ? Status.Level.OK : Status.Level.WARN, msg);
  11. }

代码示例来源：origin: libgdx/libgdx

  1. /** When true, <code>Runtime.getRuntime().halt(0);</code> is used when the JVM shuts down. This prevents Swing shutdown hooks
  2.  * from causing a deadlock and keeping the JVM alive indefinitely. Default is true. */
  3. public void setHaltOnShutdown (boolean halt) {
  4.   if (halt) {
  5.     if (shutdownHook != null) return;
  6.     shutdownHook = new Thread() {
  7.       public void run () {
  8.         Runtime.getRuntime().halt(0); // Because fuck you, deadlock causing Swing shutdown hooks.
  9.       }
  10.     };
  11.     Runtime.getRuntime().addShutdownHook(shutdownHook);
  12.   } else if (shutdownHook != null) {
  13.     Runtime.getRuntime().removeShutdownHook(shutdownHook);
  14.     shutdownHook = null;
  15.   }
  16. }

代码示例来源：origin: apache/incubator-dubbo

  1. /**
  2.  * Unregister the ShutdownHook
  3.  */
  4. public void unregister() {
  5.   if (registered.get() && registered.compareAndSet(true, false)) {
  6.     Runtime.getRuntime().removeShutdownHook(getDubboShutdownHook());
  7.   }
  8. }

代码示例来源：origin: square/leakcanary

  1. @Override public void runGc() {
  2.  // Code taken from AOSP FinalizationTest:
  3.  // https://android.googlesource.com/platform/libcore/+/master/support/src/test/java/libcore/
  4.  // java/lang/ref/FinalizationTester.java
  5.  // System.gc() does not garbage collect every time. Runtime.gc() is
  6.  // more likely to perform a gc.
  7.  Runtime.getRuntime().gc();
  8.  enqueueReferences();
  9.  System.runFinalization();
  10. }

代码示例来源：origin: gocd/gocd

  1. public void mouseClicked(MouseEvent e) {
  2.   // Launch Page
  3.   try {
  4.     Runtime.getRuntime().exec("open http://localhost:8153/go");
  5.   } catch (IOException e1) {
  6.     // Don't care
  7.   }
  8. }

代码示例来源：origin: hankcs/HanLP

  1. /**
  2.  * 开启多线程
  3.  * @param enable true表示开启[系统CPU核心数]个线程，false表示单线程
  4.  * @return
  5.  */
  6. public Segment enableMultithreading(boolean enable)
  7. {
  8.   if (enable) config.threadNumber = Runtime.getRuntime().availableProcessors();
  9.   else config.threadNumber = 1;
  10.   return this;
  11. }

代码示例来源：origin: spring-projects/spring-framework

  1. /**
  2.  * Register a shutdown hook with the JVM runtime, closing this context
  3.  * on JVM shutdown unless it has already been closed at that time.
  4.  * <p>Delegates to {@code doClose()} for the actual closing procedure.
  5.  * @see Runtime#addShutdownHook
  6.  * @see #close()
  7.  * @see #doClose()
  8.  */
  9. @Override
  10. public void registerShutdownHook() {
  11.   if (this.shutdownHook == null) {
  12.     // No shutdown hook registered yet.
  13.     this.shutdownHook = new Thread() {
  14.       @Override
  15.       public void run() {
  16.         synchronized (startupShutdownMonitor) {
  17.           doClose();
  18.         }
  19.       }
  20.     };
  21.     Runtime.getRuntime().addShutdownHook(this.shutdownHook);
  22.   }
  23. }

代码示例来源：origin: libgdx/libgdx

  1. @Override
  2. public long getJavaHeap () {
  3.   return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
  4. }

代码示例来源：origin: apache/incubator-dubbo

  1. @Override
  2. public Status check() {
  3.   Runtime runtime = Runtime.getRuntime();
  4.   long freeMemory = runtime.freeMemory();
  5.   long totalMemory = runtime.totalMemory();
  6.   long maxMemory = runtime.maxMemory();
  7.   boolean ok = (maxMemory - (totalMemory - freeMemory) > 2048); // Alarm when spare memory < 2M
  8.   String msg = "max:" + (maxMemory / 1024 / 1024) + "M,total:"
  9.       + (totalMemory / 1024 / 1024) + "M,used:" + ((totalMemory / 1024 / 1024) - (freeMemory / 1024 / 1024)) + "M,free:" + (freeMemory / 1024 / 1024) + "M";
  10.   return new Status(ok ? Status.Level.OK : Status.Level.WARN, msg);
  11. }

代码示例来源：origin: libgdx/libgdx

  1. /** When true, <code>Runtime.getRuntime().halt(0);</code> is used when the JVM shuts down. This prevents Swing shutdown hooks
  2.  * from causing a deadlock and keeping the JVM alive indefinitely. Default is true. */
  3. public void setHaltOnShutdown (boolean halt) {
  4.   if (halt) {
  5.     if (shutdownHook != null) return;
  6.     shutdownHook = new Thread() {
  7.       public void run () {
  8.         Runtime.getRuntime().halt(0); // Because fuck you, deadlock causing Swing shutdown hooks.
  9.       }
  10.     };
  11.     Runtime.getRuntime().addShutdownHook(shutdownHook);
  12.   } else if (shutdownHook != null) {
  13.     Runtime.getRuntime().removeShutdownHook(shutdownHook);
  14.     shutdownHook = null;
  15.   }
  16. }

内容来源于网络，如有侵权，请联系作者删除！

Runtime

相关文章

    查看更多

    热门标签

    更多
    JavaquerypythonNode开发语言requestUtil数据库Table后端算法LoggerMessageElementParser

    最新文章

    更多
    • 蜀ICP备13028337号-1 大数据知识库 https://www.saoniuhuo.com © All rights reserved
    • 本站内容来源互联网,如果侵犯您的权益请联系我们删除, 联系方式：448109455@qq.com