PUTC_UNLOCKED(3) Library Functions Manual PUTC_UNLOCKED(3)
NAME
putc_unlocked —
stdio with explicit client locking
SYNOPSIS
#include <stdio.h> int putc_unlocked(int c, FILE *stream);
DESCRIPTION
Refer to getc_unlocked(3) .
DERIVATION
Derived from the POSIX Threads Extension (1003.1c-1995)
February 1997 posix.fail