无法传递 boost::shared_ptr<>进入 NewObject()

Question

也许我在这里太过雄心勃勃，但我试图通过像这样的异常将shared_ptr传回Java。

我能够捕获 java 中的异常，但是当我尝试访问 ManagementProcessor 对象本身中的任何方法时，我得到一个 SIGSEGV。如果我使用 new ManagementProcessorPtr() 发送一个空的，我会得到正确的行为（我抛出一个不同的异常）。

有什么见解吗？

谢谢！

-芯片

typedef boost::shared_ptr<ManagementProcessor> ManagementProcessorPtr;

%include "boost_shared_ptr.i"
%shared_ptr(ManagementProcessor);
%typemap(javabase) Exception "java.lang.RuntimeException";
%typemap(javabase) AuthenticationExceptionManagementProcessor "NS/Exception";

%exception {
try {
  $action
}
catch (AuthenticationException<ManagementProcessor> & e ) {
  jclass eclass = jenv->FindClass("NS/AuthenticationExceptionManagementProcessor");
  if ( eclass ) {
    jobject excep = 0;
    jmethodID jid;

    jstring message =  jenv->NewStringUTF(e.getMessage().c_str());
    jstring file =  jenv->NewStringUTF(e.getFileName().c_str());

    ManagementProcessorPtr* realm = new ManagementProcessorPtr(e.getRealm());
    jlong jrealm;
    *(ManagementProcessorPtr **)&jrealm = realm;

    jid = jenv->GetMethodID(eclass, "<init>",
        "("
        "LNS/ManagementProcessor;"
        "J"
        "Ljava/lang/String;"
        "Ljava/lang/String;"
        "J)V");
    if (jid) {
        excep = jenv->NewObject(eclass, jid,
            jrealm,
            e.getApiErrNum(),
            message,
            file,
            e.getLineNum());
        if (excep)  {
            jenv->Throw((__jthrowable*) excep);
        }
    }
  }

客户端代码：

} catch (AuthenticationExceptionManagementProcessor e) {
        java.lang.System.err.println(e);
        ManagementProcessor mp = e.getRealm();
        java.lang.System.err.println("got mp");
        java.lang.System.out.println(mp.getUUID());

}

Answer 1

boost::shared_ptr 是一个 C++ 类。是什么让您认为它与 ManagementProcessorPtr* 相同？

Answer 2

当然，正确的答案是，首先我必须使用采用 CPtr 的 ctor 创建 Java ManagementProcessor 对象：

jclass mpclass = jenv->FindClass("NS/ManagementProcessor");
jobject jmp = 0;
jmethodID mpid;
ManagementProcessorPtr *realm = new ManagementProcessorPtr(e.getRealm());
jlong jrealm;
*(ManagementProcessorPtr **)&jrealm = realm;
mpid = jenv->GetMethodID(mpclass, "<init>", "(JZ)V");
jmp = jenv->NewObject(mpclass, mpid, jrealm, true);

...

        excep = jenv->NewObject(eclass, jid,
            jmp,
            e.getApiErrNum(),
            message,
            file,
            e.getLineNum());