/* -----------------------------------------------------------------------------
- * $Id: Itimer.h,v 1.5 2000/03/20 09:42:49 andy Exp $
*
- * (c) The GHC Team 1998-1999
+ * (c) The GHC Team 1998-2005
*
* Interval timer for profiling and pre-emptive scheduling.
*
* ---------------------------------------------------------------------------*/
-# define TICK_FREQUENCY 50 /* ticks per second */
-# define TICK_MILLISECS (1000/TICK_FREQUENCY) /* ms per tick */
+#ifndef ITIMER_H
+#define ITIMER_H
-extern rtsBool do_prof_ticks; /* profiling ticks on/off */
+extern int startTicker( nat ms, TickProc handle_tick);
+extern int stopTicker ( void );
-nat initialize_virtual_timer ( nat ms );
-int install_vtalrm_handler ( void );
-void block_vtalrm_signal ( void );
-void unblock_vtalrm_signal ( void );
-unsigned int getourtimeofday ( void );
+extern lnat getourtimeofday ( void );
+#if 0
+/* unused */
+extern void block_vtalrm_signal ( void );
+extern void unblock_vtalrm_signal ( void );
+#endif
+
+#endif /* ITIMER_H */