X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Frts%2FProftimer.c;h=3b499152d66b768e682ec7b8947e07b5d6438720;hb=28a464a75e14cece5db40f2765a29348273ff2d2;hp=ad5bbd92072c7235f9b955d5c0784e1a71ab4e5f;hpb=c6ab4bfa09886be3bfff4aa747af2f1c8e348a1f;p=ghc-hetmet.git

diff --git a/ghc/rts/Proftimer.c b/ghc/rts/Proftimer.c
index ad5bbd9..3b49915 100644
--- a/ghc/rts/Proftimer.c
+++ b/ghc/rts/Proftimer.c
@@ -1,5 +1,4 @@
 /* -----------------------------------------------------------------------------
- * $Id: Proftimer.c,v 1.5 1999/08/25 16:11:49 simonmar Exp $
  *
  * (c) The GHC Team, 1998-1999
  *
@@ -7,37 +6,80 @@
  *
  * ---------------------------------------------------------------------------*/
 
-/* Only have cost centres etc if PROFILING defined */
-
 #if defined (PROFILING)
 
+#include "PosixSource.h"
+
 #include "Rts.h"
-#include "ProfRts.h"
-#include "Itimer.h"
+#include "Profiling.h"
+#include "Timer.h"
 #include "Proftimer.h"
+#include "RtsFlags.h"
 
-nat current_interval = 1;               /* Current interval number -- 
-					   stored in AGE */
+static rtsBool do_prof_ticks = rtsFalse;       // enable profiling ticks
+static rtsBool do_heap_prof_ticks = rtsFalse;  // enable heap profiling ticks
 
-nat interval_ticks = DEFAULT_INTERVAL;  /* No of ticks in an interval */
+// Number of ticks until next heap census
+static int ticks_to_heap_profile;
 
-nat previous_ticks = 0;                 /* ticks in previous intervals */
-nat current_ticks = 0;                  /* ticks in current interval */
+// Time for a heap profile on the next context switch
+rtsBool performHeapProfile;
 
 void
-stopProfTimer(void)
-{				/* Stops time profile */
-  if (time_profiling) {
+stopProfTimer( void )
+{
     do_prof_ticks = rtsFalse;
-  }
-};
+}
 
 void
-startProfTimer(void)
-{				/* Starts time profile */
-  if (time_profiling) {
+startProfTimer( void )
+{
     do_prof_ticks = rtsTrue;
-  }
-};
+}
+
+void
+stopHeapProfTimer( void )
+{
+    do_heap_prof_ticks = rtsFalse;
+}
+
+void
+startHeapProfTimer( void )
+{
+    if (RtsFlags.ProfFlags.doHeapProfile && 
+	RtsFlags.ProfFlags.profileIntervalTicks > 0) {
+	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) {
+	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 */