X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Frts%2FProfHeap.c;h=312bee735c16c885f60a588bfa846efa647086a8;hb=28a464a75e14cece5db40f2765a29348273ff2d2;hp=3e3e2d6ae51ad7ebc3e96a098fd9f260073492f8;hpb=676f9567eec55046d56fefdae14e112d952b399c;p=ghc-hetmet.git

diff --git a/ghc/rts/ProfHeap.c b/ghc/rts/ProfHeap.c
index 3e3e2d6..312bee7 100644
--- a/ghc/rts/ProfHeap.c
+++ b/ghc/rts/ProfHeap.c
@@ -153,9 +153,11 @@ static char *type_names[] = {
 
     , "ARR_WORDS"
 
-    , "MUT_ARR_PTRS"
+    , "MUT_ARR_PTRS_CLEAN"
+    , "MUT_ARR_PTRS_DIRTY"
     , "MUT_ARR_PTRS_FROZEN"
-    , "MUT_VAR"
+    , "MUT_VAR_CLEAN"
+    , "MUT_VAR_DIRTY"
 
     , "WEAK"
   
@@ -253,6 +255,7 @@ LDV_recordDead( StgClosure *c, nat size )
 		if (RtsFlags.ProfFlags.bioSelector == NULL) {
 		    censuses[t].void_total   += (int)size;
 		    censuses[era].void_total -= (int)size;
+		    ASSERT(censuses[t].void_total < censuses[t].not_used);
 		} else {
 		    id = closureIdentity(c);
 		    ctr = lookupHashTable(censuses[t].hash, (StgWord)id);
@@ -387,7 +390,7 @@ printSample(rtsBool beginSample, StgDouble sampleValue)
     fractionalPart = modf(sampleValue, &integralPart);
     fprintf(hp_file, "%s %d.%02d\n",
             (beginSample ? "BEGIN_SAMPLE" : "END_SAMPLE"),
-            (int)integralPart, (int)(fractionalPart * 100 + 0.5));
+            (int)integralPart, (int)(fractionalPart * 100));
 }
 
 /* --------------------------------------------------------------------------
@@ -403,7 +406,7 @@ initHeapProfiling(void)
 #ifdef PROFILING
     if (doingLDVProfiling() && doingRetainerProfiling()) {
 	errorBelch("cannot mix -hb and -hr");
-	stg_exit(1);
+	stg_exit(EXIT_FAILURE);
     }
 #endif
 
@@ -518,8 +521,6 @@ static void
 fprint_ccs(FILE *fp, CostCentreStack *ccs, nat max_length)
 {
     char buf[max_length+1], *p, *buf_end;
-    nat next_offset = 0;
-    nat written;
 
     // MAIN on its own gets printed as "MAIN", otherwise we ignore MAIN.
     if (ccs == CCS_MAIN) {
@@ -551,8 +552,6 @@ fprint_ccs(FILE *fp, CostCentreStack *ccs, nat max_length)
 	if (p >= buf_end) {
 	    sprintf(buf+max_length-4, "...");
 	    break;
-	} else {
-	    next_offset += written;
 	}
     }
     fprintf(fp, "%s", buf);
@@ -655,6 +654,15 @@ aggregateCensusInfo( void )
 	int void_total, drag_total;
 
 	// Now we compute void_total and drag_total for each census
+	// After the program has finished, the void_total field of
+	// each census contains the count of words that were *created*
+	// in this era and were eventually void.  Conversely, if a
+	// void closure was destroyed in this era, it will be
+	// represented by a negative count of words in void_total.
+	//
+	// To get the count of live words that are void at each
+	// census, just propagate the void_total count forwards:
+
 	void_total = 0;
 	drag_total = 0;
 	for (t = 1; t < era; t++) { // note: start at 1, not 0
@@ -662,8 +670,15 @@ aggregateCensusInfo( void )
 	    drag_total += censuses[t].drag_total;
 	    censuses[t].void_total = void_total;
 	    censuses[t].drag_total = drag_total;
+
 	    ASSERT( censuses[t].void_total <= censuses[t].not_used );
+	    // should be true because: void_total is the count of
+	    // live words that are void at this census, which *must*
+	    // be less than the number of live words that have not
+	    // been used yet.
+
 	    ASSERT( censuses[t].drag_total <= censuses[t].used );
+	    // similar reasoning as above.
 	}
 	
 	return;
@@ -872,13 +887,13 @@ heapCensusChain( Census *census, bdescr *bd )
 	    case THUNK_1_1:
 	    case THUNK_0_2:
 	    case THUNK_2_0:
-		size = sizeofW(StgHeader) + stg_max(MIN_UPD_SIZE,2);
+		size = sizeofW(StgThunkHeader) + 2;
 		break;
 
 	    case THUNK_1_0:
 	    case THUNK_0_1:
 	    case THUNK_SELECTOR:
-		size = sizeofW(StgHeader) + stg_max(MIN_UPD_SIZE,1);
+		size = sizeofW(StgThunkHeader) + 1;
 		break;
 
 	    case CONSTR:
@@ -904,7 +919,7 @@ heapCensusChain( Census *census, bdescr *bd )
 	    case CONSTR_2_0:
 		size = sizeW_fromITBL(info);
 		break;
-		
+
 	    case IND:
 		// Special case/Delicate Hack: INDs don't normally
 		// appear, since we're doing this heap census right
@@ -924,7 +939,8 @@ heapCensusChain( Census *census, bdescr *bd )
 	    case MVAR:
 	    case WEAK:
 	    case STABLE_NAME:
-	    case MUT_VAR:
+	    case MUT_VAR_CLEAN:
+	    case MUT_VAR_DIRTY:
 		prim = rtsTrue;
 		size = sizeW_fromITBL(info);
 		break;
@@ -946,7 +962,8 @@ heapCensusChain( Census *census, bdescr *bd )
 		size = arr_words_sizeW(stgCast(StgArrWords*,p));
 		break;
 		
-	    case MUT_ARR_PTRS:
+	    case MUT_ARR_PTRS_CLEAN:
+	    case MUT_ARR_PTRS_DIRTY:
 	    case MUT_ARR_PTRS_FROZEN:
 	    case MUT_ARR_PTRS_FROZEN0:
 		prim = rtsTrue;