如何释放是从本地code回Java发送的jstring？

问题描述

我有以下的原生程序：

void sendMessage(const char* text)
{
    JNIEnv* env;

    if(!_jvm)
        return;

    _jvm->AttachCurrentThread(&env, NULL);

    if(!_nativesCls)
        _nativesCls = env->FindClass("com/foo/BaseLib");
    if(_nativesCls == 0)
            return;

    jstring message = env->NewStringUTF(text);
    if(!_sendStr)
        _sendStr = env->GetStaticMethodID(_nativesCls, "onMessage", "(Ljava/lang/String;)V");
    if(_sendStr)
        env->CallStaticVoidMethod(_nativesCls, _sendStr, message);
    //env->ReleaseStringUTFChars(message, text); // <----- * NOT WORKING
}

如果我运行此作为的是，它工作正常，直到内存满了，我得到：

If I run this as is, it works fine up until memory fills up and I receive:

ReferenceTable溢出（最大值= 512）

我想加入上面的注释行会解决这个问题，但它只是使应用程序在这一点上弹了出来。

I thought adding the commented line above would fix the issue but it just causes the app to bomb out at that point.

有什么建议？

推荐答案

DeleteLocalRef（）。就像被内JNI分配的任何其他Java对象。然而，这将是自动垃圾收集一旦JNI方法返回。详情点击这里：的

DeleteLocalRef(). Just like any other Java object that was allocated within JNI. However, it will be automatically garbage-collected once the JNI method returns. Details here: http://download.oracle.com/javase/1.3/docs/guide/jni/spec/design.doc.html#1242

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