1 files changed, 90 insertions, 0 deletions
diff --git a/lib/os_mon/c_src/nteventlog/elog_pipe_stdin.h b/lib/os_mon/c_src/nteventlog/elog_pipe_stdin.h
new file mode 100644
index 0000000000..a9a91b685f
--- /dev/null
+++ b/lib/os_mon/c_src/nteventlog/elog_pipe_stdin.h
@@ -0,0 +1,90 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 1998-2009. All Rights Reserved.
+ * 
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ * 
+ * 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.
+ * 
+ * %CopyrightEnd%
+ */
+#ifndef _ELOG_PIPE_STDIN_H
+#define _ELOG_PIPE_STDIN_H
+/*
+ * Module: elog_pipe_stdin
+ * Purpouse: Read data from stdin when stdin is a pipe
+ * and deliver events only when data is really availabel or 
+ * end of file is reached.
+ * If we would wait on an ordinary pipe handle, we 
+ * would return immediately as it's always "signaled".
+ * some kind of asyncronous I/O in the win32 way is 
+ * not possible as it's not supported on anonymous pipes
+ * (besides we have not opened the file ourselves so we 
+ *  cannot specify that we want async I/O...).
+ * ToDo: The reading is inneficcient, the buffering 
+ * goes on forever, which would be dangerous if to much 
+ * data was passed into stdin. The handling of 
+ * Console stdin should be transparent instead of
+ * forcing the user of the module to check if this is a 
+ * console for selecting between ReadFile and 
+ * read_pipe_stdin.
+ * The handling of the event object is somewhat strange 
+ * because I want to know about EOF before I've read
+ * to it.
+ */
+
+BOOL peek_pipe_stdin_eof(void);
+/*
+ * Returns TRUE if eof is reached, regardless of 
+ * if there still is unread data in the buffer.
+ * Should not be called if console_stdin() returns TRUE.
+ * Resets the event object if it returns TRUE.
+ */
+
+int read_pipe_stdin(char *buff, int max);
+/*
+ * Reads from stdin, minimum 1 byte and
+ * maximum max bytes into buff. If EOF
+ * is reached and no bytes were read, 
+ * the return value is 0.
+ * Should not be called if console_stdin() returns TRUE.
+ * The event object for stdin will get unsignaled if
+ * end of file is not reached (if peek_pipe_stdin_eof()
+ * would return false).
+ */
+
+BOOL setup_pipe_stdin(void);
+/*
+ * Initializes the module, returns TRUE if OK.
+ * If stdin is a console, no thread is created
+ * and the event objet returned by get_Stdin_event 
+ * will be the console handle.
+ * Check if stdin was a console with the console_stdin() 
+ * function.
+ */
+
+BOOL console_stdin(void);
+/*
+ * Returns true if stdin was a console, in which case
+ * normal Win32 console I/O functions have to
+ * be used. 
+ * get_stdin_event() will return the console handle,
+ * which is signalled whenever an event reaches
+ * the console window (like mouse events etc).
+ */
+
+HANDLE get_stdin_event(void);
+/*
+ * Returns a event handle that can be waited upon with
+ * WaitForSingleObject and friends. It is possibly a console
+ * handle, see console_stdin().
+ */
+#endif /* _ELOG_PIPE_STDIN_H */