Revert "use libco instead of state-thread(st), still have some bug"

This reverts commit 7c8a35aea9.

trunk/3rdparty/st-srs/extensions/stx_fileio.h

@@ -0,0 +1,52 @@
+/*
+ * File I/O extension to the State Threads Library.
+ */
+
+/* 
+ * The contents of this file are subject to the Mozilla Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/MPL/
+ * 
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ * 
+ * The Original Code is the file I/O extension to the State Threads Library.
+ * 
+ * The Initial Developer of the Original Code is Jeff
+ * <jlb-st@houseofdistraction.com>.  Portions created by the Initial
+ * Developer are Copyright (C) 2002 the Initial Developer.  All Rights
+ * Reserved.
+ * 
+ * Contributor(s): (none)
+ * 
+ * Alternatively, the contents of this file may be used under the
+ * terms of the GNU General Public License Version 2 or later (the
+ * "GPL"), in which case the provisions of the GPL are applicable 
+ * instead of those above.  If you wish to allow use of your 
+ * version of this file only under the terms of the GPL and not to
+ * allow others to use your version of this file under the MPL,
+ * indicate your decision by deleting the provisions above and
+ * replace them with the notice and other provisions required by
+ * the GPL.  If you do not delete the provisions above, a recipient
+ * may use your version of this file under either the MPL or the
+ * GPL.
+ */
+
+#ifndef __STX_FILEIO_H__
+#define __STX_FILEIO_H__
+
+#include <st.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern ssize_t stx_file_read(st_netfd_t fd, off_t offset, void *buf, size_t nbytes, st_utime_t timeout);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !__STX_FILEIO_H__ */