2009/7/11 Glynn Clements <glynn@xxxxxxxxxxxxxxxxxx>: > > Michał Nazarewicz wrote: > >> > waitpid(pid, &ret, 0); >> > close(fds[1]); >> >> No need to close. > > There definitely is a need to close, but it should be fclose(stream) > *before* the waitpid(). As David points out, sort won't terminate > until it has finished reading its input. > > David Lee wrote: > >> The sort program is waiting for an EOF (^D). > > Ctrl-D isn't EOF unless you're reading from a terminal. The TTY driver > "sends EOF" (i.e. causes read() to return a zero count) when you press > Ctrl-D (by default) if the driver is in canonical mode. Ctrl-D doesn't > have any significance in other contexts. > Definitely! Thanks for pointing out. :-) And BTW, `strace' is a handy tool for diagnosing this kind of problems. > -- > Glynn Clements <glynn@xxxxxxxxxxxxxxxxxx> > -- > To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- Thanks, Li Qun -- To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
