今天写了一个小程序,使用了消息队列的msgsnd msgrcv函数,由msgsnd函数循环处理由终端输入的消息,然后把它发送到消息队列,而另一个进程则循环读取消息,进行处理。 这时,问题出现了,每次调用msgrcv函数的时候,它总是第一次调用成功,而第二次返回错误,察看errno=22,打印出来是invalid argument,无效参数。 凭它的说明,可...
在我们的日常编程中，对消息队列的需求非常常见，使用一个简洁、高效的消息队列编程模型，对于代码逻辑的...
[EACCES] The calling process does not have read access to the message queue. [EFAULT] Themsgpargument points to an invalid address. [EINTR] The system call was interrupted by the delivery of a signal. [ENOMSG] There is no message of the requested type available on the message queue, and...
msg_qnumis decremented by 1. msg_lrpidis set to the process ID of the calling process. msg_rtimeis set to the current time. The argumentmsgpmust point to a user-defined buffer that must contain first a field of typelong intthat specifies the type of the message, and then a data por...
5. Linux msgsnd : invalid argument(439) 评论排行榜 1. Sql Server迁移助手(SSMA) 将Oracle数据库转成Sql Server 2008(7) 推荐排行榜 1. C++ 同步/异步与阻塞/非阻塞的区别(4) 2. Sql Server迁移助手(SSMA) 将Oracle数据库转成Sql Server 2008(3) 最新评论 1. Re:HTML之Position用法 谁知道...
The argumentmsgszspecifies the maximum size in bytes for the membermtextof the structure pointed to by themsgpargument. If the message text has length greater thanmsgsz, then the behavior depends on whetherMSG_NOERRORis specified inmsgflg. IfMSG_NOERRORis specified, then the message text will...