1 files changed, 89 insertions, 0 deletions
diff --git a/sched.h b/sched.h
new file mode 100644
index 0000000..5ff53c7
--- /dev/null
+++ b/sched.h
@@ -0,0 +1,89 @@
+/*
+  chronyd/chronyc - Programs for keeping computer clocks accurate.
+
+ **********************************************************************
+ * Copyright (C) Richard P. Curnow  1997-2002
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ * 
+ **********************************************************************
+
+  =======================================================================
+
+  Exported header file for sched.c
+  */
+
+#ifndef GOT_SCHED_H
+#define GOT_SCHED_H
+
+#include "sysincl.h"
+
+/* Type for timeout IDs, valid IDs are always greater than zero */
+typedef unsigned int SCH_TimeoutID;
+
+typedef enum {
+  SCH_ReservedTimeoutValue = 0,
+  SCH_NtpClientClass,
+  SCH_NtpPeerClass,
+  SCH_NtpBroadcastClass,
+  SCH_NumberOfClasses /* needs to be last */
+} SCH_TimeoutClass;
+
+typedef void* SCH_ArbitraryArgument;
+typedef void (*SCH_FileHandler)(int fd, int event, SCH_ArbitraryArgument);
+typedef void (*SCH_TimeoutHandler)(SCH_ArbitraryArgument);
+
+/* Exported functions */
+
+/* Initialisation function for the module */
+extern void SCH_Initialise(void);
+
+/* Finalisation function for the module */
+extern void SCH_Finalise(void);
+
+/* File events */
+#define SCH_FILE_INPUT 1
+#define SCH_FILE_OUTPUT 2
+#define SCH_FILE_EXCEPTION 4
+
+/* Register a handler for when select goes true on a file descriptor */
+extern void SCH_AddFileHandler(int fd, int events, SCH_FileHandler handler, SCH_ArbitraryArgument arg);
+extern void SCH_RemoveFileHandler(int fd);
+extern void SCH_SetFileHandlerEvent(int fd, int event, int enable);
+
+/* Get the time stamp taken after a file descriptor became ready or a timeout expired */
+extern void SCH_GetLastEventTime(struct timespec *cooked, double *err, struct timespec *raw);
+
+/* This queues a timeout to elapse at a given (raw) local time */
+extern SCH_TimeoutID SCH_AddTimeout(struct timespec *ts, SCH_TimeoutHandler handler, SCH_ArbitraryArgument arg);
+
+/* This queues a timeout to elapse at a given delta time relative to the current (raw) time */
+extern SCH_TimeoutID SCH_AddTimeoutByDelay(double delay, SCH_TimeoutHandler, SCH_ArbitraryArgument);
+
+/* This queues a timeout in a particular class, ensuring that the
+   expiry time is at least a given separation away from any other
+   timeout in the same class, given randomness is added to the delay
+   and separation */
+extern SCH_TimeoutID SCH_AddTimeoutInClass(double min_delay, double separation, double randomness,
+                                           SCH_TimeoutClass class,
+                                           SCH_TimeoutHandler handler, SCH_ArbitraryArgument);
+
+/* The next one probably ought to return a status code */
+extern void SCH_RemoveTimeout(SCH_TimeoutID);
+
+extern void SCH_MainLoop(void);
+
+extern void SCH_QuitProgram(void);
+
+#endif /* GOT_SCHED_H */