X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Frts%2FProftimer.c;h=dc36df9d71cb7569f21b9315379ae613c851580c;hb=776afe7766a4fe991dbb5a38595900ebd95d4d5a;hp=bd50c98350132f02b1737f88698076c7d4138f41;hpb=438596897ebbe25a07e1c82085cfbc5bdb00f09e;p=ghc-hetmet.git

diff --git a/ghc/rts/Proftimer.c b/ghc/rts/Proftimer.c
index bd50c98..dc36df9 100644
--- a/ghc/rts/Proftimer.c
+++ b/ghc/rts/Proftimer.c
@@ -1,62 +1,88 @@
 /* -----------------------------------------------------------------------------
- * $Id: Proftimer.c,v 1.2 1998/12/02 13:28:36 simonm Exp $
+ * $Id: Proftimer.c,v 1.12 2003/02/22 04:51:52 sof Exp $
  *
- * (c) The GHC Team, 1998
+ * (c) The GHC Team, 1998-1999
  *
  * Profiling interval timer
  *
  * ---------------------------------------------------------------------------*/
 
-/* Only have cost centres etc if PROFILING defined */
-
 #if defined (PROFILING)
 
+#include "PosixSource.h"
+
+#include <stdio.h>
+
 #include "Rts.h"
-#include "ProfRts.h"
-#include "Itimer.h"
+#include "Profiling.h"
+#include "Timer.h"
 #include "Proftimer.h"
+#include "RtsFlags.h"
 
-lnat total_ticks = 0;
+static rtsBool do_prof_ticks = rtsFalse;       // enable profiling ticks
+static rtsBool do_heap_prof_ticks = rtsFalse;  // enable heap profiling ticks
 
-nat current_interval = 1;               /* Current interval number -- 
-					   stored in AGE */
+// Number of ticks until next heap census
+static int ticks_to_heap_profile;
 
-nat interval_ticks = DEFAULT_INTERVAL;  /* No of ticks in an interval */
+// Time for a heap profile on the next context switch
+rtsBool performHeapProfile;
 
-nat previous_ticks = 0;                 /* ticks in previous intervals */
-nat current_ticks = 0;                  /* ticks in current interval */
+void
+stopProfTimer( void )
+{
+    do_prof_ticks = rtsFalse;
+}
 
 void
-initProfTimer(nat ms)
+startProfTimer( void )
 {
-  if (initialize_virtual_timer(ms)) {
-    fflush(stdout);
-    fprintf(stderr, "Can't initialize virtual timer.\n");
-    stg_exit(EXIT_FAILURE);
-  }
-};
+    do_prof_ticks = rtsTrue;
+}
 
 void
-stopProfTimer(void)
-{				/* Stops time profile */
-  if (time_profiling) {
-    initProfTimer(0);
-  }
-};
+stopHeapProfTimer( void )
+{
+    do_heap_prof_ticks = rtsFalse;
+}
 
 void
-startProfTimer(void)
-{				/* Starts time profile */
-  if (time_profiling) {
-    initProfTimer(TICK_MILLISECS);
-  }
-};
+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)
 {
-  CCS_TICK(CCCS);
-  total_ticks++;
-};
+    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 */