The Java Native InterfaceProgrammer’s Guide and Specification phần 7 pps

... are to be passed to the method immediately following the methodID argument. The Call<Type>Method function accepts these arguments and passes them to the method that the programmer wishes ... va_list that immediately follows the meth- odID argument. The CallNonvirtual<Type>MethodV routine accepts the arguments, and, in turn, passes them to the method that the...

Ngày tải lên: 13/08/2014, 08:20

... ([Ljava/lang/String;)V private native nativeMethod ()V The -s flag informs javap to output JNI descriptor strings rather than types as they appear in the Java programming language. The -p flag causes javap to include ... prints out the existing value of the static field and then sets the field to a new value. To verify that the field has indeed changed, the pro- gram prints...

Ngày tải lên: 13/08/2014, 08:20

... Evolution of the JNI The need for Java applications to interoperate with native code has been recog- nized since the very early days of the Java platform. The first release of the Java platform, Java ... Because of the 1. As used herein, the phrases Java virtual machine” or Java VM” mean a virtual machine for the Java platform. Similarly, the phrase Java API”...

Ngày tải lên: 13/08/2014, 08:20

... callback from native code (a native /Java callback) compare with the cost of calling a native method (a Java/ native call), and with the cost of calling a regular method (a Java/ Java call)? The answer ... reference and the other for the result returned from the method call. Next, it obtains the class reference from the object and looks up the method ID. D...

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... with the Java virtual machine. The launcher parses the command line arguments, loads the virtual machine, and runs Java applications through the invo- cation interface. 7. 1 Creating the Java ... scheduled. The thread models match if the native code uses the same thread model as the Java virtual machine implementation. If the Java virtual machine implement...

Ngày tải lên: 13/08/2014, 08:20

... Application and Native Code A common question when designing a Java application supported by native code is “What, and how much, should be in native code?” The boundaries between the native code and the ... in the Java programming language than to inline native methods defined in C and C++. • Keep the code on the native code side minimal. There are compellin...

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... language. 12.1.1 Primitive Types The following table describes the primitive types in the Java programming lan- guage and the corresponding types in the JNI. Like their counterparts in the Java programming language, ... characters, and so on, are copied between the Java virtual machine and native code. Objects, on the other hand, are passed jni.book Page 155 Thur...

Ngày tải lên: 13/08/2014, 08:20

... for- mat. The function begins the translation at offset start and places the result in the given buffer buf. The str reference and buf buffer must not be NULL. Note that the len argument denotes the ... triggers the execution of this function. The JNI_OnLoad function returns the JNI version number required by the native library. If the native library does not e...

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... 105, 2 17 java. lang.reflect.Field, 105, 216 java. lang.reflect.Method, 105, 2 17 java. lang.String See String java. lang.Thread , 48 java. library.path property, 17, 150 Java/ Java call, 58 Java/ native ... 58 Java_ prefix, 22 Java_ VMInitArgs, 251 javac compiler, 11, 14 javah tool, 9, 11, 14 javai.dll, 87 javai.lib, 87 javap tool, 44 JavaVM interface create, 83 destroy, 86 obt...

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... EAST sales analyze (IR) Handling Raised Exceptions Error Handling 6- 17 EXCEPTION WHEN OTHERS THEN cannot catch the exception END; Handlers in the current block cannot catch the raised exception ... past_due THEN does not handle RAISEd exception END; The enclosing block does not handle the raised exception because the declaration of past_due in the sub-block prevails. Thou...

Ngày tải lên: 07/08/2014, 11:22