[project @ 2004-08-13 13:04:50 by simonmar]

[ghc-hetmet.git] / ghc / rts / ProfHeap.c

diff --git a/ghc/rts/ProfHeap.c b/ghc/rts/ProfHeap.c
index 1f0156c..49b3813 100644 (file)
--- a/ghc/rts/ProfHeap.c
+++ b/ghc/rts/ProfHeap.c
@@ -1,5 +1,5 @@
 /* -----------------------------------------------------------------------------
- * $Id: ProfHeap.c,v 1.51 2004/03/19 23:20:20 panne Exp $
+ * $Id: ProfHeap.c,v 1.53 2004/08/13 13:10:25 simonmar Exp $
  *
  * (c) The GHC Team, 1998-2003
  *
@@ -32,6 +32,7 @@
 
 #include <string.h>
 #include <stdlib.h>
+#include <math.h>
 
 /* -----------------------------------------------------------------------------
  * era stores the current time period.  It is the same as the
@@ -249,6 +250,7 @@ LDV_recordDead( StgClosure *c, nat size )
 
     if (era > 0 && closureSatisfiesConstraints(c)) {
        size -= sizeofW(StgProfHeader);
+       ASSERT(LDVW(c) != 0);
        if ((LDVW((c)) & LDV_STATE_MASK) == LDV_STATE_CREATE) {
            t = (LDVW((c)) & LDV_CREATE_MASK) >> LDV_SHIFT;
            if (t < era) {
@@ -382,6 +384,16 @@ void endProfiling( void )
 }
 #endif /* DEBUG_HEAP_PROF */
 
+static void
+printSample(rtsBool beginSample, StgDouble sampleValue)
+{
+    StgDouble fractionalPart, integralPart;
+    fractionalPart = modf(sampleValue, &integralPart);
+    fprintf(hp_file, "%s %d.%02d\n",
+            (beginSample ? "BEGIN_SAMPLE" : "END_SAMPLE"),
+            (int)integralPart, (int)(fractionalPart * 100 + 0.5));
+}
+
 /* --------------------------------------------------------------------------
  * Initialize the heap profilier
  * ----------------------------------------------------------------------- */
@@ -443,8 +455,8 @@ initHeapProfiling(void)
     fprintf(hp_file, "SAMPLE_UNIT \"seconds\"\n");
     fprintf(hp_file, "VALUE_UNIT \"bytes\"\n");
 
-    fprintf(hp_file, "BEGIN_SAMPLE 0.00\n");
-    fprintf(hp_file, "END_SAMPLE 0.00\n");
+    printSample(rtsTrue, 0);
+    printSample(rtsFalse, 0);
 
 #ifdef DEBUG_HEAP_PROF
     DEBUG_LoadSymbols(prog_name);
@@ -486,8 +498,8 @@ endHeapProfiling(void)
 #endif
 
     seconds = mut_user_time();
-    fprintf(hp_file, "BEGIN_SAMPLE %0.2f\n", seconds);
-    fprintf(hp_file, "END_SAMPLE %0.2f\n", seconds);
+    printSample(rtsTrue, seconds);
+    printSample(rtsFalse, seconds);
     fclose(hp_file);
 }
 
@@ -583,6 +595,7 @@ rtsBool
 closureSatisfiesConstraints( StgClosure* p )
 {
 #ifdef DEBUG_HEAP_PROF
+    (void)p;   /* keep gcc -Wall happy */
     return rtsTrue;
 #else
    rtsBool b;
@@ -729,7 +742,7 @@ dumpCensus( Census *census )
     counter *ctr;
     int count;
 
-    fprintf(hp_file, "BEGIN_SAMPLE %0.2f\n", census->time);
+    printSample(rtsTrue, census->time);
 
 #ifdef PROFILING
     if (RtsFlags.ProfFlags.doHeapProfile == HEAP_BY_LDV) {
@@ -742,7 +755,7 @@ dumpCensus( Census *census )
                census->prim * sizeof(W_));
        fprintf(hp_file, "DRAG\t%u\n", census->drag_total *
                sizeof(W_));
-       fprintf(hp_file, "END_SAMPLE %0.2f\n", census->time);
+       printSample(rtsFalse, census->time);
        return;
     }
 #endif
@@ -822,7 +835,7 @@ dumpCensus( Census *census )
        fprintf(hp_file, "\t%d\n", count * sizeof(W_));
     }
 
-    fprintf(hp_file, "END_SAMPLE %0.2f\n", census->time);
+    printSample(rtsFalse, census->time);
 }
 
 /* -----------------------------------------------------------------------------