static NC_MSG_TYPE nc_session_receive(struct nc_session* session, int timeout, struct nc_msg** msg)
时间: 2024-04-23 10:24:10 浏览: 11
这段代码定义了一个函数nc_session_receive,该函数的作用是从指定的session中接收消息。参数timeout指定超时时间,msg是一个指向nc_msg结构体的指针,用于返回接收到的消息。函数的返回值是NC_MSG_TYPE类型,表示接收到的消息的类型。
具体实现过程中,函数首先调用nc_session_read_until函数从session中读取消息头。然后根据消息头中的信息来确定消息的类型和长度。接着根据消息类型和长度,调用不同的函数来读取消息体,并将其存储在nc_msg结构体中。最后将nc_msg结构体的指针赋值给msg参数,并返回消息类型。如果在接收消息的过程中遇到错误,则返回NC_MSG_ERROR。
相关问题
void nc_session_close(struct nc_session* session, NC_SESSION_TERM_REASON reason)
这是一个函数声明,它声明了一个名为nc_session_close的函数,该函数接受两个参数:一个指向nc_session类型的指针和一个NC_SESSION_TERM_REASON类型的值。函数的作用是关闭给定的nc_session会话,并指定关闭的原因。
具体实现可能因语言和上下文而异,无法确定。
static inline struct crypto_async_request *crypto_get_backlog
(void)
{
return __crypto_get_backlog(current);
}
The function `crypto_get_backlog` is defined as a static inline function that returns a pointer to a `struct crypto_async_request` object. This function is used to retrieve the backlog of asynchronous requests that are waiting to be processed by the cryptographic subsystem.
The `__crypto_get_backlog` function is an internal function that takes a pointer to a `struct task_struct` object as its argument. It returns a pointer to the backlog of asynchronous requests associated with the task.
The `current` macro is used to obtain a pointer to the `task_struct` object that represents the currently executing process.
Therefore, the `crypto_get_backlog` function returns the backlog of asynchronous requests associated with the currently executing process.