我正在尝试获取可用JVM的默认jvm args,但我得到一个奇怪的输出。任何人都可以指出我的错误?
输出:
65542
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代码:
#include "jni.h"
#include <iostream>
#include <dlfcn.h>
#include <cstdlib>
using namespace std;
void * JNI_FindCreateJavaVM(char *vmlibpath) {
void *libVM = dlopen(vmlibpath, RTLD_LAZY);
if (libVM == NULL) {
return NULL;
}
return dlsym(libVM, "JNI_GetDefaultJavaVMInitArgs");
}
int main() {
JavaVMOption vm_options;
JavaVMInitArgs vm_args;
vm_args.version = JNI_VERSION_1_6;
vm_args.ignoreUnrecognized = JNI_FALSE;
vm_args.options = &vm_options;
void* (*lib_func)(void *) = 0;
lib_func = (void*(*)(void*)) JNI_FindCreateJavaVM(
"/usr/lib/jvm/java-6-sun/jre/lib/i386/client/libjvm.so");
lib_func(&vm_args);
cout << vm_args.version << endl;
cout << vm_args.options[0].optionString << endl;
return 0;
}
答案 0 :(得分:1)
JNI_GetCreatedJavaVMs的原型是:
jint JNI_GetCreatedJavaVMs(JavaVM **vmBuf, jsize bufLen, jsize *nVMs);
您使用*JavaVMInitArgs
参数调用该函数,我不确定您希望您的代码打印任何合理的代码。