typedef builtin xa_list;
Parameter iterator
long xa_align_of(size_t size);
Get the size after align
void xa_start(xa_list &list, void *begin, size_t begin_size);
Start a iterator, point it to the first position of the var argument table
void xa_arg(xa_list &list, size_t size, void *copyto);
Get the next argument
void xa_end(xa_list &list);
Close the iterator instance
const size_t XA_ALIGN;
Represents the align bytes of the parameters
typedef builtin xa_list;
参数迭代器
long xa_align_of(size_t size);
获取一个大小在对齐后的大小
void xa_start(xa_list &list, void *begin, size_t begin_size);
开启一个迭代器，并将其指向变长参数的前一个参数位置
void xa_arg(xa_list &list, size_t size, void *copyto);
获取下一个参数
void xa_end(xa_list &list);
关闭参数迭代器
const size_t XA_ALIGN;
表示参数的对其字节数