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Bug 937751, part 5 - Add optional phase logging. r=smaug

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For debugging purposes, it can be useful to see what ICC is currently
being run.
This commit is contained in:
Andrew McCreight 2013-12-03 10:47:47 -08:00
parent 5e100e7681
commit bbd56bb6f1
1 changed files with 14 additions and 0 deletions
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14
xpcom/base/nsCycleCollector.cpp
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@ -2722,6 +2722,15 @@ nsCycleCollector::ShutdownCollect()
}
}
static void
PrintPhase(const char *aPhase)
{
#ifdef DEBUG_PHASES
printf("cc: begin %s on %s\n", aPhase,
NS_IsMainThread() ? "mainthread" : "worker");
#endif
}
bool
nsCycleCollector::Collect(ccType aCCType,
SliceBudget &aBudget,
@ -2748,9 +2757,11 @@ nsCycleCollector::Collect(ccType aCCType,
do {
switch (mIncrementalPhase) {
case IdlePhase:
PrintPhase("BeginCollection");
BeginCollection(aCCType, aManualListener);
break;
case GraphBuildingPhase:
PrintPhase("MarkRoots");
MarkRoots();
break;
case ScanAndCollectWhitePhase:
@ -2758,10 +2769,13 @@ nsCycleCollector::Collect(ccType aCCType,
// that we won't unlink a live object if a weak reference is
// promoted to a strong reference after ScanRoots has finished.
// See bug 926533.
PrintPhase("ScanRoots");
ScanRoots();
PrintPhase("CollectWhite");
collectedAny = CollectWhite();
break;
case CleanupPhase:
PrintPhase("CleanupAfterCollection");
CleanupAfterCollection();
finished = true;
break;