JNIEXPORT和JNICALL在Android的NDK [英] JNIEXPORT and JNICALL in Android NDK

问题描述

虽然对某些信号源用C ++的工作，我发现那些宏：

While working with some sources written in c++ I found those macro:

JNIEXPORT return_type JNICALL function_name(...){

然而，Android的NDK样本不使用它们。我读了Oracle的一些文件，但我仍然感到困惑。 难道我一定要使用他们，而与Android NDK的工作？

However, android-ndk samples don't use them. I read some docs from oracle, but I'm still confused. Do I necessarily have to use them while working with Android NDK?

其中一个原因要求 - 这些宏观突破语法高亮显示在Eclipse CDT的：）的

推荐答案

基本上是一个Windows的问题，如果你看看随附甲骨文的Java JDK，这是宏定义文件jni_md_win32.h：

Basically is a windows issue, if you have a look to the file jni_md_win32.h that comes with oracle Java jdk this is the macro definition:

/*
 * @(#)jni_md.h 1.14 03/12/19
 *
 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

#ifndef _JAVASOFT_JNI_MD_H_
#define _JAVASOFT_JNI_MD_H_

#define JNIEXPORT __declspec(dllexport)
#define JNIIMPORT __declspec(dllimport)
#define JNICALL __stdcall

typedef long jint;
typedef __int64 jlong;
typedef signed char jbyte;

#endif /* !_JAVASOFT_JNI_MD_H_ */

在jni_md_linux.h这些宏是空的头。所以我想，只要你不希望你的本地code在Windows与Oracle JVM可以删除这些宏被执行。

In the header jni_md_linux.h those macros are empty. So I guess that as long you don't want your native code to be executed in windows with oracle JVM you can remove those macros.

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