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[heap] Add tracing for age_marks upon evacuation

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R=ulan@chromium.org
BUG=chromium:581412
LOG=N

Review URL: https://codereview.chromium.org/1882033002

Cr-Commit-Position: refs/heads/master@{#35414}
This commit is contained in:
mlippautz 2016-04-12 05:25:53 -07:00 committed by Commit bot
parent 177e04aacb
commit 72b00cab5c
1 changed files with 10 additions and 3 deletions
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13
src/heap/mark-compact.cc
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@ -3026,10 +3026,17 @@ bool MarkCompactCollector::Evacuator::EvacuateSinglePage(
success = collector_->VisitLiveObjects(p, visitor, kClearMarkbits);
}
if (FLAG_trace_evacuation) {
const char age_mark_tag =
!p->InNewSpace()
? 'x'
: !p->IsFlagSet(MemoryChunk::NEW_SPACE_BELOW_AGE_MARK)
? '>'
: !p->ContainsLimit(heap()->new_space()->age_mark()) ? '<'
: '#';
PrintIsolate(heap()->isolate(),
"evacuation[%p]: page=%p new_space=%d executable=%d "
"live_bytes=%d time=%f\n",
this, p, p->InNewSpace(),
"evacuation[%p]: page=%p new_space=%d age_mark_tag=%c "
"executable=%d live_bytes=%d time=%f\n",
this, p, p->InNewSpace(), age_mark_tag,
p->IsFlagSet(MemoryChunk::IS_EXECUTABLE), saved_live_bytes,
evacuation_time);
}