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ArrayTable save prev table when growing

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This commit is contained in:
James Cherry
2020-05-17 18:54:59 -07:00
parent 4e0a959328
commit d45a28a258
1 changed files with 7 additions and 2 deletions
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include/sta/ArrayTable.hh
+7 -2
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@@ -59,6 +59,7 @@ private:
size_t blocks_size_;
size_t blocks_capacity_;
ArrayBlock<TYPE>* *blocks_;
ArrayBlock<TYPE>* *prev_blocks_;
static constexpr ObjectId idx_mask_ = block_size - 1;
};
@@ -68,6 +69,7 @@ ArrayTable<TYPE>::ArrayTable() :
blocks_size_(0),
blocks_capacity_(1024),
blocks_(new ArrayBlock<TYPE>*[blocks_capacity_]),
prev_blocks_(nullptr),
free_block_idx_(block_idx_null),
free_idx_(object_idx_null)
{
@@ -78,6 +80,7 @@ ArrayTable<TYPE>::~ArrayTable()
{
deleteBlocks();
delete [] blocks_;
delete [] prev_blocks_;
}
template <class TYPE>
@@ -130,10 +133,12 @@ ArrayTable<TYPE>::pushBlock(ArrayBlock<TYPE> *block)
size_t new_capacity = blocks_capacity_ * 1.5;
ArrayBlock<TYPE>** new_blocks = new ArrayBlock<TYPE>*[new_capacity];
memcpy(new_blocks, blocks_, blocks_capacity_ * sizeof(ArrayBlock<TYPE>*));
ArrayBlock<TYPE>** old_blocks = blocks_;
if (prev_blocks_)
delete [] prev_blocks_;
// Preserve block array for other threads to reference.
prev_blocks_ = blocks_;
blocks_ = new_blocks;
blocks_capacity_ = new_capacity;
delete [] old_blocks;
}
}