如何确定是否可以写入管道

Is there a way (in C, or preferably in Perl) to determine whether a named pipe may be written - i.e. there is an active reading process It seems that if I open for write nonblocking, the open returns at once but a select for write also returns immediately. The goal is for the writing process to just carry on (i.e. skip sending) if the reading end is not readyIs there a way (in C, or preferably in Perl) to