aio_write 到文件请求后更改数据

Question

更改或释放传递给 aio_write 以便写入文件的缓冲区是否安全。或者我应该等待操作完成？该函数是将所有缓冲区内容复制到队列还是仅复制对数据的引用？

Answer 1

来自man 7 aio:

he control block buffer and the buffer pointed to by aio_buf must not be changed while the I/O operation is in progress. These buffers must remain valid until the I/O operation completes.

因此，在您被告知操作已完成之前，请勿触摸该结构。