最近看到的一些关于POSIX消息队列接口中文说明很粗略，现在提供其英文版详细说明NAMEmq_receive - receive a message from a message queue (REALTIME) SYNOPSIS#include ssize_t mq_receive(mqd_t mqdes, char *msg_ptr, size_t msg_len, unsigned int *msg_prio);DESCRIPTIONThe mq_receive() function is used to receive the oldest of the highest priority message(s) from the message queue specified by mqdes. If the size of the buffer in bytes, specified by the msg_len argument, is less than the mq_msgsize attrib
