void BlockDirectory::addBlock(MarkedBlock::Handle* block)
{
size_t index;
if (m_freeBlockIndices.isEmpty()) {
index = m_blocks.size();
size_t oldCapacity = m_blocks.capacity();
m_blocks.append(block);
if (m_blocks.capacity() != oldCapacity) {
forEachBitVector(
NoLockingNecessary,
[&] (FastBitVector& vector) {
ASSERT_UNUSED(vector, vector.numBits() == oldCapacity);
});
ASSERT(m_blocks.capacity() > oldCapacity);
LockHolder locker(m_bitvectorLock);
subspace()->didResizeBits(m_blocks.capacity());
forEachBitVector(
locker,
[&] (FastBitVector& vector) {
vector.resize(m_blocks.capacity());
});
}
} else {
index = m_freeBlockIndices.takeLast();
ASSERT(!m_blocks[index]);
m_blocks[index] = block;
}
forEachBitVector(
NoLockingNecessary,
[&] (FastBitVector& vector) {
ASSERT_UNUSED(vector, !vector[index]);
});
// This is the point at which the block learns of its cellSize() and attributes().
block->didAddToDirectory(this, index);
setIsLive(NoLockingNecessary, index, true);
setIsEmpty(NoLockingNecessary, index, true);
}
void MarkedAllocator::addBlock(MarkedBlock::Handle* block)
{
size_t index;
if (m_freeBlockIndices.isEmpty()) {
index = m_blocks.size();
size_t oldCapacity = m_blocks.capacity();
m_blocks.append(block);
if (m_blocks.capacity() != oldCapacity) {
forEachBitVector(
[&] (FastBitVector& vector) {
ASSERT_UNUSED(vector, vector.numBits() == oldCapacity);
});
ASSERT(m_blocks.capacity() > oldCapacity);
forEachBitVector(
[&] (FastBitVector& vector) {
vector.resize(m_blocks.capacity());
});
}
} else {
index = m_freeBlockIndices.takeLast();
ASSERT(!m_blocks[index]);
m_blocks[index] = block;
}
forEachBitVector(
[&] (FastBitVector& vector) {
ASSERT_UNUSED(vector, !vector[index]);
});
// This is the point at which the block learns of its cellSize() and attributes().
block->didAddToAllocator(this, index);
setIsLive(index, true);
setIsEmpty(index, true);
}
void MarkedAllocator::removeBlock(MarkedBlock::Handle* block)
{
ASSERT(block->allocator() == this);
ASSERT(m_blocks[block->index()] == block);
m_blocks[block->index()] = nullptr;
m_freeBlockIndices.append(block->index());
forEachBitVector(
[&] (FastBitVector& vector) {
vector[block->index()] = false;
});
block->didRemoveFromAllocator();
}
void BlockDirectory::removeBlock(MarkedBlock::Handle* block)
{
ASSERT(block->directory() == this);
ASSERT(m_blocks[block->index()] == block);
subspace()->didRemoveBlock(block->index());
m_blocks[block->index()] = nullptr;
m_freeBlockIndices.append(block->index());
forEachBitVector(
holdLock(m_bitvectorLock),
[&] (FastBitVector& vector) {
vector[block->index()] = false;
});
block->didRemoveFromDirectory();
}
