/* -----------------------------------------------------------------------------
- * $Id: Proftimer.c,v 1.7 2001/08/14 13:40:09 sewardj Exp $
+ * $Id: Proftimer.c,v 1.10 2002/07/18 09:12:34 simonmar Exp $
*
* (c) The GHC Team, 1998-1999
*
#if defined (PROFILING)
#include "PosixSource.h"
+
+#include <stdio.h>
+
#include "Rts.h"
#include "Profiling.h"
#include "Itimer.h"
#include "Proftimer.h"
+#include "RtsFlags.h"
+
+static rtsBool do_prof_ticks = rtsFalse; // enable profiling ticks
+static rtsBool do_heap_prof_ticks = rtsFalse; // enable heap profiling ticks
+
+// Number of ticks until next heap census
+static int ticks_to_heap_profile;
-rtsBool do_prof_ticks = rtsFalse; /* enable profiling ticks */
+// Time for a heap profile on the next context switch
+rtsBool performHeapProfile;
void
-stopProfTimer(void)
-{ /* Stops time profile */
- if (time_profiling) {
- do_prof_ticks = rtsFalse;
- }
-};
+stopProfTimer( void )
+{
+ do_prof_ticks = rtsFalse;
+}
+
+void
+startProfTimer( void )
+{
+ do_prof_ticks = rtsTrue;
+}
+
+void
+stopHeapProfTimer( void )
+{
+ do_heap_prof_ticks = rtsFalse;
+}
void
-startProfTimer(void)
-{ /* Starts time profile */
- if (time_profiling) {
- do_prof_ticks = rtsTrue;
+startHeapProfTimer( void )
+{
+ if (RtsFlags.ProfFlags.doHeapProfile) {
+ do_heap_prof_ticks = rtsTrue;
}
-};
+}
+
+void
+initProfTimer( void )
+{
+ performHeapProfile = rtsFalse;
+
+ RtsFlags.ProfFlags.profileIntervalTicks =
+ RtsFlags.ProfFlags.profileInterval / TICK_MILLISECS;
+
+ ticks_to_heap_profile = RtsFlags.ProfFlags.profileIntervalTicks;
+
+ startHeapProfTimer();
+}
+
void
handleProfTick(void)
{
if (do_prof_ticks) {
- CCS_TICK(CCCS);
+ CCCS->time_ticks++;
+ }
+
+ if (do_heap_prof_ticks) {
+ ticks_to_heap_profile--;
+ if (ticks_to_heap_profile <= 0) {
+ ticks_to_heap_profile = RtsFlags.ProfFlags.profileIntervalTicks;
+ performHeapProfile = rtsTrue;
+ }
}
}
+
#endif /* PROFILING */