Web5 sep. 2014 · ByteBuffer是最常用的缓冲区,它提供了读写其他数据类型的方法,且信道的读写方法只接收ByteBuffer。 ByteBuffer有以下几种常见属性： mark:初始值为-1，标记索引 … Web1 dec. 2024 · NewDirectByteBuffer의 리턴값이 바로 ByteBuffer 객체라 자바로 다시 돌려 주면 바로 쓸 수가 있다. 이 객체를 Native에서 계속 유지하려면 GLobal Ref로 변경해줘야 …
does NewDirectByteBuffer create a copy in native code
Web如果您拥有共享内存，例如使用 CreateFileMapping (Windows)或 shmget (Unix)，则您所需要的只是Java方面的本机方法。 然后，您可以创建一个 ByteBuffer ，使用 NewDirectByteBuffer 直接访问共享内存，如下所示： 1 2 3 JNIEXPORT jobject JNICALL Java_getSharedBuffer ( JNIEnv * env, jobject caller) { void* myBuffer; int bufferLength; … Web它是普通的 free () 还是其他东西。 最佳答案 当您调用 JNI NewDirectByteBuffer (void* address, jlong capacity) 时，将使用以下构造函数创建一个 DirectByteBuffer 对象: private DirectByteBuffer(long addr, int cap) { super (- 1, 0, cap, cap); address = addr; cleaner = null ; att = null ; } 请注意 cleaner 属性为空。 tapu alim satim harci
Passing NewDirectByteBuffer from C++ to Java (JNI)
Web10 sep. 2016 · If i understood that right you're currently using an additional JNI library? It's not entirely clear for what you need that native array, but in Unity you can use … WebThis class defines six categories of operations upon byte buffers: Absolute and relative get and put methods that read and write single bytes; Relative bulk get methods that transfer … Webpublic static IntPtr NewDirectByteBuffer (byte* buffer, long capacity); Description. Allocates and returns a direct java.nio.ByteBuffer referring to the block of memory starting at the … tapua homla