How to wait for multiple threads simultaneously?

["Chen (é) Jun (å)" <chjfth at gmail dot com>]

Helloï

I'd like to ask whether glibc provides an effective way to wait for 
multiple thread's end. Using pthread_join, I can only wait for one 
thread at a time. Microsoft provides WaitForMultipleObject for doing 
this , how about glibc or POSIX?

An even harder question, how can I wait for one thread's end and one 
file descriptor(e.g STDIN_FILENO) to be readable simultaneously? -- If 
either one of the two conditions becomes fulfilled, the other one must 
quit its waiting status immediately as if no wait operation was carried out.

Thank you.