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#!/bin/sh
fail=0
cat <<\EOF || fail=1
#ifndef UNLOCKED_IO_H
# define UNLOCKED_IO_H 1
# ifndef USE_UNLOCKED_IO
# define USE_UNLOCKED_IO 1
# endif
# 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 of the applications in this package are single threaded. */
EOF
for f in $@; do
u=`echo $f|tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`
cat <<EOF || fail=1
# if HAVE_${u}_UNLOCKED
# undef $f
EOF
case $f in
getchar)
params=;;
putchar | clearerr | feof | ferror | fflush | getc )
params=x;;
putc | fputc | fputs )
params=x,y;;
fgets )
params=x,y,z;;
fread | fwrite )
params=w,x,y,z;;
*)
echo $0: missing case for $f 2>&1; fail=1;;
esac
cat <<EOF || fail=1
# define $f($params) ${f}_unlocked ($params)
# endif
EOF
done
cat <<\EOF || fail=1
# endif /* USE_UNLOCKED_IO */
#endif /* UNLOCKED_IO_H */
EOF
(exit $fail); exit
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