/* -----------------------------------------------------------------------------
- * $Id: Itimer.c,v 1.18 2000/09/11 15:04:08 rrt Exp $
+ * $Id: Itimer.c,v 1.19 2000/10/06 11:05:57 rrt Exp $
*
* (c) The GHC Team, 1995-1999
*
void
#if defined(mingw32_TARGET_OS) || (defined(cygwin32_TARGET_OS) && !defined(HAVE_SETITIMER))
CALLBACK
-#endif
+handle_tick(UINT uID STG_UNUSED, UINT uMsg STG_UNUSED, DWORD dwUser STG_UNUSED,
+ DWORD dw1 STG_UNUSED, DWORD d STG_UNUSED);
+#else
handle_tick(int unused STG_UNUSED);
+#endif
/* -----------------------------------------------------------------------------
Tick handler
void
#if defined(mingw32_TARGET_OS) || (defined(cygwin32_TARGET_OS) && !defined(HAVE_SETITIMER))
CALLBACK
-#endif
+handle_tick(UINT uID STG_UNUSED, UINT uMsg STG_UNUSED, DWORD dwUser STG_UNUSED,
+ DWORD dw1 STG_UNUSED, DWORD d STG_UNUSED)
+#else
handle_tick(int unused STG_UNUSED)
+#endif
{
total_ticks++;
#if defined(mingw32_TARGET_OS) || (defined(cygwin32_TARGET_OS) && !defined(HAVE_SETITIMER))
-/*
- vtalrm_handler is assigned and set up in Signals.c
-
- vtalrm_id (defined in Signals.c) holds
- the system id for the current timer (used to
- later block/kill it.)
-*/
-extern nat vtalrm_id;
-TIMECALLBACK *vtalrm_cback;
-
+LPTIMECALLBACK vtalrm_cback;
+
nat
initialize_virtual_timer(nat ms)
{
As the delivery of ticks isn't free, we only
enable it if we really needed, i.e., when profiling.
- (the RTS now also needs timer ticks to implement
- threadDelay in non-profiling mode, but the pure
- Win32 port doesn't support that.....yet.)
+ (GetTickCount is used for threadDelay)
*/
- unsigned int delay,vtalrm_id;
+ unsigned int delay;
+ static unsigned int vtalrm_id;
- delay = timeBeginPeriod(1);
- if (delay == TIMERR_NOCANDO) { /* error of some sort. */
- return delay;
+ if (ms) {
+ delay = timeBeginPeriod(1);
+ if (delay == TIMERR_NOCANDO) { /* error of some sort. */
+ return delay;
+ }
+ vtalrm_id =
+ timeSetEvent(ms, /* event every `delay' milliseconds. */
+ 1, /* precision is within 1 ms */
+ vtalrm_cback,
+ TIME_CALLBACK_FUNCTION, /* ordinary callback */
+ TIME_PERIODIC);
+ } else {
+ timeKillEvent(vtalrm_id);
+ timeEndPeriod(1);
}
- vtalrm_id =
- timeSetEvent(ms, /* event every `delay' milliseconds. */
- 1, /* precision is within 5 millisecs. */
- (LPTIMECALLBACK)vtalrm_cback,
- 0,
- TIME_PERIODIC);
# endif
return 0;