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#!/bin/sh
tmp=gen-uio.$$
trap 'status=$?; rm -f $tmp && exit $status' 0
trap 'exit $?' 1 2 13 15
cat <<\EOF
#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. */
EOF
for f in $@; do
u=`echo $f|tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`
echo "# if HAVE_${u}_UNLOCKED"
echo "# undef $f"
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; exit 1;;
esac
echo "# define $f($params) ${f}_unlocked ($params)"
echo '# endif'
done
cat <<\EOF
# endif /* USE_UNLOCKED_IO */
#endif /* UNLOCKED_IO_H */
EOF
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