diff options
| -rw-r--r-- | src/qml/memory/qv4mm.cpp | 34 |
1 files changed, 32 insertions, 2 deletions
diff --git a/src/qml/memory/qv4mm.cpp b/src/qml/memory/qv4mm.cpp index 88912a6678..7aa8f91503 100644 --- a/src/qml/memory/qv4mm.cpp +++ b/src/qml/memory/qv4mm.cpp @@ -262,17 +262,36 @@ void ChunkAllocator::free(Chunk *chunk, size_t size) Q_ASSERT(false); } +#ifdef DUMP_SWEEP +QString binary(quintptr n) { + QString s = QString::number(n, 2); + while (s.length() < 64) + s.prepend(QChar::fromLatin1('0')); + return s; +} +#define SDUMP qDebug +#else +QString binary(quintptr) { return QString(); } +#define SDUMP if (1) ; else qDebug +#endif void Chunk::sweep() { - // DEBUG << "sweeping chunk" << this << (*freeList); + SDUMP() << "sweeping chunk" << this; HeapItem *o = realBase(); + bool lastSlotFree = false; for (uint i = 0; i < Chunk::EntriesInBitmap; ++i) { Q_ASSERT((grayBitmap[i] | blackBitmap[i]) == blackBitmap[i]); // check that we don't have gray only objects quintptr toFree = objectBitmap[i] ^ blackBitmap[i]; Q_ASSERT((toFree & objectBitmap[i]) == toFree); // check all black objects are marked as being used quintptr e = extendsBitmap[i]; - // DEBUG << hex << " index=" << i << toFree; + SDUMP() << " index=" << i; + SDUMP() << " toFree =" << binary(toFree); + SDUMP() << " black =" << binary(blackBitmap[i]); + SDUMP() << " object =" << binary(objectBitmap[i]); + SDUMP() << " extends =" << binary(e); + if (lastSlotFree) + e &= (e + 1); // clear all lowest extent bits while (toFree) { uint index = qCountTrailingZeroBits(toFree); quintptr bit = (static_cast<quintptr>(1) << index); @@ -299,6 +318,10 @@ void Chunk::sweep() objectBitmap[i] = blackBitmap[i]; blackBitmap[i] = 0; extendsBitmap[i] = e; + lastSlotFree = !((objectBitmap[i]|extendsBitmap[i]) >> (sizeof(quintptr)*8 - 1)); + SDUMP() << " new extends =" << binary(e); + SDUMP() << " lastSlotFree" << lastSlotFree; + Q_ASSERT((objectBitmap[i] & extendsBitmap[i]) == 0); o += Chunk::Bits; } // DEBUG << "swept chunk" << this << "freed" << slotsFreed << "slots."; @@ -887,6 +910,13 @@ size_t dumpBins(BlockAllocator *b, bool printOutput = true) if (printOutput) qDebug() << " number of entries in slot" << i << ":" << nEntries; } + SDUMP() << " large slot map"; + HeapItem *h = b->freeBins[BlockAllocator::NumBins - 1]; + while (h) { + SDUMP() << " " << hex << (quintptr(h)/32) << h->freeData.availableSlots; + h = h->freeData.next; + } + if (printOutput) qDebug() << " total mem in bins" << totalFragmentedSlots*Chunk::SlotSize; return totalFragmentedSlots*Chunk::SlotSize; |