本文整理了Java中sun.misc.Unsafe.ensureClassInitialized()方法的一些代码示例，展示了Unsafe.ensureClassInitialized()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。Unsafe.ensureClassInitialized()方法的具体详情如下：
包路径：sun.misc.Unsafe
类名称：Unsafe
方法名：ensureClassInitialized

Unsafe.ensureClassInitialized介绍

[英]Ensure the given class has been initialized. This is often needed in conjunction with obtaining the static field base of a class.
[中]确保给定的类已初始化。这通常需要与获取类的静态字段基结合使用。

代码示例

代码示例来源：origin: btraceio/btrace

private Class defineClassImpl(byte[] code, boolean mustBeBootstrap) {
  ClassLoader loader = null;
  if (! mustBeBootstrap) {
    loader = new ClassLoader(null) {};
  }
  Class cl = unsafe.defineClass(className, code, 0, code.length, loader, null);
  unsafe.ensureClassInitialized(cl);
  return cl;
}

代码示例来源：origin: org.jboss.openjdk-orb/openjdk-orb-jdk9-supplement

public static JavaCorbaAccess getJavaCorbaAccess() {
  if (javaCorbaAccess == null) {
    // Ensure ValueUtility is initialized; we know that that class
    // provides the shared secret
    unsafe.ensureClassInitialized(ValueUtility.class);
  }
  return javaCorbaAccess;
}

代码示例来源：origin: org.jboss.openjdk-orb/openjdk-orb-jdk9-supplement

/**
 * Ensure that the class has been initalized.
 * @param cl the class to ensure is initialized
 */
public final void ensureClassInitialized(Class<?> cl) {
  unsafe.ensureClassInitialized(cl);
}

代码示例来源：origin: com.tomitribe.tribestream/tribestream-metrics-bytecode

public static void ensureClassInitialized(final Class<?> aClass) {
  UNSAFE.ensureClassInitialized(aClass);
}

代码示例来源：origin: org.jboss.openjdk-orb/openjdk-orb

/**
 * Ensure that the class has been initalized.
 * @param cl the class to ensure is initialized
 */
public final void ensureClassInitialized(Class<?> cl) {
  unsafe.ensureClassInitialized(cl);
}

代码示例来源：origin: jbachorik/btrace2

private Class defineClassImpl(byte[] code, boolean mustBeBootstrap) {
  ClassLoader loader = null;
  if (!mustBeBootstrap) {
    loader = new ClassLoader(null) {
    };
  }
  Class cl = unsafe.defineClass(className, code, 0, code.length, loader, null);
  unsafe.ensureClassInitialized(cl);
  return cl;
}

代码示例来源：origin: org.gridkit.3rd.btrace/runtime

private Class defineClassImpl(byte[] code, boolean mustBeBootstrap) {
  ClassLoader loader = null;
  if (!mustBeBootstrap) {
    loader = new ClassLoader(null) {
    };
  }
  Class cl = unsafe.defineClass(className, code, 0, code.length, loader, null);
  unsafe.ensureClassInitialized(cl);
  return cl;
}

代码示例来源：origin: org.jboss.windup.decompiler.procyon/procyon-core

public static void ensureClassInitialized(final Class<?> clazz) {
  getUnsafeInstance().ensureClassInitialized(VerifyArgument.notNull(clazz, "clazz"));
}

代码示例来源：origin: org.jboss.windup.decompiler.procyon/windup-procyon-core

public static void ensureClassInitialized(final Class<?> clazz) {
  getUnsafeInstance().ensureClassInitialized(VerifyArgument.notNull(clazz, "clazz"));
}

代码示例来源：origin: org.bitbucket.mstrobel/procyon-core

public static void ensureClassInitialized(final Class<?> clazz) {
  getUnsafeInstance().ensureClassInitialized(VerifyArgument.notNull(clazz, "clazz"));
}

代码示例来源：origin: com.meterware.simplestub/simplestub

private static void setFieldValue(Class aClass, String fieldName, Object value) throws NoSuchFieldException {
  unsafe.ensureClassInitialized(aClass);
  Field field = aClass.getDeclaredField(fieldName);
  if (!field.getType().isPrimitive())
    unsafe.putObject(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field), value);
  else if (field.getType().equals(boolean.class) && value instanceof Boolean)
    unsafe.putBoolean(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field), (Boolean) value);
  else if (field.getType().equals(char.class) && value instanceof Character)
    unsafe.putChar(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field), ((Character) value));
  else if (field.getType().equals(byte.class) && value instanceof Number)
    unsafe.putByte(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field), ((Number) value).byteValue());
  else if (field.getType().equals(short.class) && value instanceof Number)
    unsafe.putShort(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field), ((Number) value).shortValue());
  else if (field.getType().equals(int.class) && value instanceof Number)
    unsafe.putInt(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field), ((Number) value).intValue());
  else if (field.getType().equals(long.class) && value instanceof Number)
    unsafe.putLong(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field), ((Number) value).longValue());
  else if (field.getType().equals(float.class) && value instanceof Number)
    unsafe.putFloat(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field), ((Number) value).floatValue());
  else if (field.getType().equals(double.class) && value instanceof Number)
    unsafe.putDouble(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field), ((Number) value).doubleValue());
  else
    throw new IllegalArgumentException(String.format("Can not set final static %s field %s.%s to %s", field.getType(), aClass.getName(), fieldName, value.getClass().getName()));
}

代码示例来源：origin: com.oracle.substratevm/svm

@Override
public void rerunClassInitialization(Class<?>[] classes) {
  for (Class<?> clazz : classes) {
    checkEagerInitialization(clazz);
    try {
      UnsafeAccess.UNSAFE.ensureClassInitialized(clazz);
    } catch (Throwable ex) {
      throw UserError.abort("Class initialization failed: " + clazz.getTypeName(), ex);
    }
    /*
     * Propagate possible existing DELAY registration from a superclass, so that we can
     * check for user errors below.
     */
    computeInitKindAndMaybeInitializeClass(clazz, false);
    InitKind previousKind = classInitKinds.put(clazz, InitKind.RERUN);
    if (previousKind == InitKind.EAGER) {
      throw UserError.abort("The information that the class should be initialized during image building has already been used, " +
              "so it is too late to register re-running the class initializer: " + clazz.getTypeName());
    } else if (previousKind == InitKind.DELAY) {
      throw UserError.abort("Class or a superclass is already registered for delaying the class initializer, " +
              "so it is too late to register re-running the class initializer: " + clazz.getTypeName());
    }
  }
}

代码示例来源：origin: com.meterware.simplestub/simplestub

private static Object getFieldValue(Class aClass, String fieldName) throws NoSuchFieldException {
  unsafe.ensureClassInitialized(aClass);
  Field field = aClass.getDeclaredField(fieldName);
  if (!field.getType().isPrimitive())
    return unsafe.getObject(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field));
  else if (field.getType().equals(boolean.class))
    return unsafe.getBoolean(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field));
  else if (field.getType().equals(char.class))
    return unsafe.getChar(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field));
  else if (field.getType().equals(byte.class))
    return unsafe.getByte(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field));
  else if (field.getType().equals(short.class))
    return unsafe.getShort(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field));
  else if (field.getType().equals(int.class))
    return unsafe.getInt(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field));
  else if (field.getType().equals(long.class))
    return unsafe.getLong(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field));
  else if (field.getType().equals(float.class))
    return unsafe.getFloat(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field));
  else if (field.getType().equals(double.class))
    return unsafe.getDouble(unsafe.staticFieldBase(field), unsafe.staticFieldOffset(field));
  else
    throw new IllegalArgumentException(String.format("Can not get value for static %s field %s.%s", field.getType(), aClass.getName(), fieldName));
}

代码示例来源：origin: com.oracle.substratevm/svm

UnsafeAccess.UNSAFE.ensureClassInitialized(clazz);
return InitKind.EAGER;

代码示例来源：origin: org.graalvm.compiler/compiler

public static <T> NodeClass<T> get(Class<T> clazz) {
  int numTries = 0;
  while (true) {
    boolean shouldBeInitializedBefore = UnsafeAccess.UNSAFE.shouldBeInitialized(clazz);
    NodeClass<T> result = getUnchecked(clazz);
    if (result != null || clazz == NODE_CLASS) {
      return result;
    }
    /*
     * GR-9537: We observed a transient problem with TYPE fields being null. Retry a couple
     * of times and print something to the log so that we can gather more diagnostic
     * information without failing gates.
     */
    numTries++;
    boolean shouldBeInitializedAfter = UnsafeAccess.UNSAFE.shouldBeInitialized(clazz);
    String msg = "GR-9537 Reflective field access of TYPE field returned null. This is probably a bug in HotSpot class initialization. " +
            " clazz: " + clazz.getTypeName() + ", numTries: " + numTries +
            ", shouldBeInitializedBefore: " + shouldBeInitializedBefore + ", shouldBeInitializedAfter: " + shouldBeInitializedAfter;
    if (numTries <= 100) {
      TTY.println(msg);
      UnsafeAccess.UNSAFE.ensureClassInitialized(clazz);
    } else {
      throw GraalError.shouldNotReachHere(msg);
    }
    return result;
  }
}