android类加载: 内部引用类同dex文件(不包括BootClassLoader加载类), 否则加载失败

最新推荐文章于 2024-05-02 22:41:04 发布

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本文详细解析了Resolve.cpp中处理异常DEX解析的逻辑，包括数组类的判断、类加载器的比较以及异常访问错误的抛出。

Resolve.cpp

if (!fromUnverifiedConstant &&
    IS_CLASS_FLAG_SET(referrer, CLASS_ISPREVERIFIED))
{
    ClassObject* resClassCheck = resClass;
    if (dvmIsArrayClass(resClassCheck))
        resClassCheck = resClassCheck->elementClass;

    if (referrer->pDvmDex != resClassCheck->pDvmDex &&
        resClassCheck->classLoader != NULL)
    {
        ALOGW("Class resolved by unexpected DEX:"
             " %s(%p):%p ref [%s] %s(%p):%p",
            referrer->descriptor, referrer->classLoader,
            referrer->pDvmDex,
            resClass->descriptor, resClassCheck->descriptor,
            resClassCheck->classLoader, resClassCheck->pDvmDex);
        ALOGW("(%s had used a different %s during pre-verification)",
            referrer->descriptor, resClass->descriptor);
        dvmThrowIllegalAccessError(
            "Class ref in pre-verified class resolved to unexpected "
            "implementation");
        return NULL;
    }
}