summaryrefslogtreecommitdiff
path: root/lib
diff options
context:
space:
mode:
authorJim Meyering <jim@meyering.net>2001-09-26 08:13:41 +0000
committerJim Meyering <jim@meyering.net>2001-09-26 08:13:41 +0000
commitde7d4fdb5ffbab637f673043917f22e84fbfb027 (patch)
treebe98db425b338ab6fa0c2df9103bd15c5a582c57 /lib
parentddbaad372efd1cb1e618ccb32c1d280cffd0782c (diff)
downloadcoreutils-de7d4fdb5ffbab637f673043917f22e84fbfb027.tar.xz
*** empty log message ***
Diffstat (limited to 'lib')
-rwxr-xr-xlib/gen-uio46
1 files changed, 46 insertions, 0 deletions
diff --git a/lib/gen-uio b/lib/gen-uio
new file mode 100755
index 000000000..4d09c4c3d
--- /dev/null
+++ b/lib/gen-uio
@@ -0,0 +1,46 @@
+#!/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