Java Modifier.isNative方法代碼示例

import java.lang.reflect.Modifier; //導入方法依賴的package包/類
/**
 * 獲取前綴相同的方法
 * 
 * 隻獲取"本類自己"的方法
 * 
 * @param i_Class
 * @param i_MethodPrefixName
 * @return
 */
public static List<Method> getStartMethods(Class<?> i_Class ,String i_MethodPrefixName)
{
    List<Method> v_Ret     = new ArrayList<Method>();
    Method []    v_Methods = i_Class.getMethods();
    
    for (int i=0; i<v_Methods.length; i++)
    {
        // 隻獲取"本類自己"的方法
        if ( !Modifier.isNative(v_Methods[i].getModifiers()) )
        {
            if ( v_Methods[i].getName().startsWith(i_MethodPrefixName) )
            {
                v_Ret.add(v_Methods[i]);
            }
        }
    }
    
    return v_Ret;
}
 

import java.lang.reflect.Modifier; //導入方法依賴的package包/類
/**
 * Helper method for CompileTheWorld to determine if a method should be compiled (Cf.
 * CompilationPolicy::can_be_compiled).
 * 
 * @return true if it can be compiled, false otherwise
 */
private static boolean canBeCompiled(HotSpotResolvedJavaMethod javaMethod, int modifiers) {
    if (Modifier.isAbstract(modifiers) || Modifier.isNative(modifiers)) {
        return false;
    }
    // This number is from HotSpot:
    final int hugeMethodLimit = 8000;
    if (javaMethod.getCodeSize() > hugeMethodLimit) {
        return false;
    }
    // Skip @Snippets for now
    if (javaMethod.getAnnotation(Snippet.class) != null) {
        return false;
    }
    return true;
}
 

import java.lang.reflect.Modifier; //導入方法依賴的package包/類
private static boolean checkGetter(Method method) {
	int modifiers = method.getModifiers();
	if (Modifier.isStatic(modifiers)) {
		return true;
	}
	if (Modifier.isNative(modifiers)) {
		return true;
	}
	if (Modifier.isAbstract(modifiers)) {
		return true;
	}
	if (method.getReturnType().equals(Void.TYPE)) {
		return true;
	}
	if (method.getParameterTypes().length != 0) {
		return true;
	}
	if (method.getReturnType() == ClassLoader.class) {
		return true;
	}
	if (method.getName().equals("getClass")) {
		return true;
	}
	return false;
}
 

import java.lang.reflect.Modifier; //導入方法依賴的package包/類
private static boolean checkSetter(Method method, Field field) {
	int modifiers = method.getModifiers();
	if (Modifier.isStatic(modifiers)) {
		return true;
	}
	if (Modifier.isNative(modifiers)) {
		return true;
	}
	if (Modifier.isAbstract(modifiers)) {
		return true;
	}
	if (!method.getReturnType().equals(Void.TYPE)) {
		return true;
	}
	if (method.getParameterTypes().length != 1) {
		return true;
	}
	if (!method.getParameterTypes()[0].equals(field.getType())) {
		return true;
	}
	return false;
}
 

import java.lang.reflect.Modifier; //導入方法依賴的package包/類
@SuppressWarnings("try")
private static void testBailoutUsage(Class<?> c) {
    RuntimeProvider rt = Graal.getRequiredCapability(RuntimeProvider.class);
    Providers providers = rt.getHostBackend().getProviders();
    MetaAccessProvider metaAccess = providers.getMetaAccess();
    PhaseSuite<HighTierContext> graphBuilderSuite = new PhaseSuite<>();
    Plugins plugins = new Plugins(new InvocationPlugins());
    GraphBuilderConfiguration config = GraphBuilderConfiguration.getDefault(plugins).withEagerResolving(true);
    graphBuilderSuite.appendPhase(new GraphBuilderPhase(config));
    HighTierContext context = new HighTierContext(providers, graphBuilderSuite, OptimisticOptimizations.NONE);
    OptionValues options = getInitialOptions();
    DebugContext debug = DebugContext.create(options, DebugHandlersFactory.LOADER);
    for (Method m : c.getDeclaredMethods()) {
        if (!Modifier.isNative(m.getModifiers()) && !Modifier.isAbstract(m.getModifiers())) {
            ResolvedJavaMethod method = metaAccess.lookupJavaMethod(m);
            StructuredGraph graph = new StructuredGraph.Builder(options, debug).method(method).build();
            graphBuilderSuite.apply(graph, context);
            try (DebugCloseable s = debug.disableIntercept()) {
                new VerifyBailoutUsage().apply(graph, context);
            }
        }
    }
}
 

import java.lang.reflect.Modifier; //導入方法依賴的package包/類
/**
 * Determines if a method should be compiled (Cf. CompilationPolicy::can_be_compiled).
 *
 * @return true if it can be compiled, false otherwise
 */
private boolean canBeCompiled(HotSpotResolvedJavaMethod javaMethod, int modifiers) {
    if (Modifier.isAbstract(modifiers) || Modifier.isNative(modifiers)) {
        return false;
    }
    GraalHotSpotVMConfig c = compiler.getGraalRuntime().getVMConfig();
    if (c.dontCompileHugeMethods && javaMethod.getCodeSize() > c.hugeMethodLimit) {
        println(verbose || methodFilters != null,
                        String.format("CompileTheWorld (%d) : Skipping huge method %s (use -XX:-DontCompileHugeMethods or -XX:HugeMethodLimit=%d to include it)", classFileCounter,
                                        javaMethod.format("%H.%n(%p):%r"),
                                        javaMethod.getCodeSize()));
        return false;
    }
    // Allow use of -XX:CompileCommand=dontinline to exclude problematic methods
    if (!javaMethod.canBeInlined()) {
        return false;
    }
    // Skip @Snippets for now
    for (Annotation annotation : javaMethod.getAnnotations()) {
        if (annotation.annotationType().equals(Snippet.class)) {
            return false;
        }
    }
    return true;
}
 

import java.lang.reflect.Modifier; //導入方法依賴的package包/類
/**
 * Gets the reflection API version of the substitution method.
 */
Method getJavaSubstitute() throws GraalError {
    Method substituteMethod = lookupSubstitute();
    int modifiers = substituteMethod.getModifiers();
    if (Modifier.isAbstract(modifiers) || Modifier.isNative(modifiers)) {
        throw new GraalError("Substitution method must not be abstract or native: " + substituteMethod);
    }
    if (!Modifier.isStatic(modifiers)) {
        throw new GraalError("Substitution method must be static: " + substituteMethod);
    }
    return substituteMethod;
}
 

import java.lang.reflect.Modifier; //導入方法依賴的package包/類
private static void runSanityTest(Executable aMethod, int[] bcis) {
    HotSpotResolvedJavaMethod method = CTVMUtilities
            .getResolvedMethod(aMethod);
    String className = aMethod.getDeclaringClass().getName();
    String methodName = aMethod.getName().equals(className)
            ? "<init>"
            : aMethod.getName();
    String fileName = getFileName(className);
    Map<Integer, Integer> bciWithLineNumber = CTVMUtilities
            .getBciToLineNumber(aMethod);
    boolean isNative = Modifier.isNative(aMethod.getModifiers());
    int lineNumber = -1;
    for (int bci : bcis) {
        StackTraceElement ste = CompilerToVMHelper
                .getStackTraceElement(method, bci);
        Asserts.assertNotNull(ste, aMethod + " : got null StackTraceElement"
                + " at bci " + bci);
        Asserts.assertEQ(className, ste.getClassName(), aMethod
                + " : unexpected class name");
        Asserts.assertEQ(fileName, ste.getFileName(), aMethod
                + " : unexpected filename");
        Asserts.assertEQ(methodName, ste.getMethodName(), aMethod
                + " : unexpected method name");
        Asserts.assertEQ(isNative, ste.isNativeMethod(), aMethod
                + " : unexpected 'isNative' value");
        if (bciWithLineNumber.size() > 0) {
            if (bciWithLineNumber.containsKey(bci)) {
                lineNumber = bciWithLineNumber.get(bci);
            }
            Asserts.assertEQ(lineNumber, ste.getLineNumber(), aMethod
                    + " : unexpected line number");
        } else {
            // native and abstract function
            Asserts.assertGT(0, ste.getLineNumber(),
                    aMethod + " : unexpected line number for abstract "
                            + "or native method");
        }
    }

}
 

import java.lang.reflect.Modifier; //導入方法依賴的package包/類
/**
 * @see Modifier#isNative(int)
 */
default boolean isNative() {
    return Modifier.isNative(getModifiers());
}
 

import java.lang.reflect.Modifier; //導入方法依賴的package包/類
/** Returns true if the element is native. */
public final boolean isNative() {
  return Modifier.isNative(getModifiers());
}
 

import java.lang.reflect.Modifier; //導入方法依賴的package包/類
public static boolean isAllModifiersContainSpecificModifier(int allModifiers, int specificModifier) {
    if (Modifier.isAbstract(allModifiers) && Modifier.isAbstract(specificModifier))
        return true;

    if (Modifier.isFinal(allModifiers) && Modifier.isFinal(specificModifier))
        return true;

    if (Modifier.isInterface(allModifiers) && Modifier.isInterface(specificModifier))
        return true;

    if (Modifier.isNative(allModifiers) && Modifier.isNative(specificModifier))
        return true;

    if (Modifier.isPrivate(allModifiers) && Modifier.isPrivate(specificModifier))
        return true;

    if (Modifier.isProtected(allModifiers) && Modifier.isProtected(specificModifier))
        return true;

    if (Modifier.isPublic(allModifiers) && Modifier.isPublic(specificModifier))
        return true;

    if (Modifier.isStatic(allModifiers) && Modifier.isStatic(specificModifier))
        return true;

    if (Modifier.isStrict(allModifiers) && Modifier.isStrict(specificModifier))
        return true;

    if (Modifier.isSynchronized(allModifiers) && Modifier.isSynchronized(specificModifier))
        return true;

    if (Modifier.isTransient(allModifiers) && Modifier.isTransient(specificModifier))
        return true;

    if (Modifier.isVolatile(allModifiers) && Modifier.isVolatile(specificModifier))
        return true;

    if (Modifier.isVolatile(allModifiers) && Modifier.isVolatile(specificModifier))
        return true;

    return false;
}
 

import java.lang.reflect.Modifier; //導入方法依賴的package包/類
/** Utility method to query the modifier flags of this member. */
public boolean isNative() {
    return Modifier.isNative(flags);
}
 

import java.lang.reflect.Modifier; //導入方法依賴的package包/類
/** Return true if the method includes the {@code native} modifier. */
public boolean isNative () {
	return Modifier.isNative(method.getModifiers());
}
 

import java.lang.reflect.Modifier; //導入方法依賴的package包/類
/**
 * Return true if this method is native
 */
public boolean isNative() {
    return Modifier.isNative(getModifiers());
}
 

import java.lang.reflect.Modifier; //導入方法依賴的package包/類
/**
 * Return true if the method includes the {@code native} modifier.
 */
public boolean isNative() {
    return Modifier.isNative(method.getModifiers());
}