#ifndef UNLOCKED_IO_H # define UNLOCKED_IO_H 1 # if USE_UNLOCKED_IO /* These are wrappers for functions/macros from GNU libc. The standard I/O functions are thread-safe. These *_unlocked ones are more efficient but not thread-safe. That they're not thread-safe is fine since all these applications are single threaded. */ @replace_this@ # endif /* USE_UNLOCKED_IO */ #endif /* UNLOCKED_IO_H */