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ArrayTable prevent block overflow

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This commit is contained in:
James Cherry
2020-09-07 09:04:17 -07:00
parent b57fcf173e
commit ab2b1924e8
3 changed files with 12 additions and 4 deletions
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include/sta/ObjectTable.hh
+5 -2
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@@ -43,8 +43,9 @@ public:
void clear();
// Objects are allocated in blocks of 128.
static constexpr ObjectId idx_bits = 7;
static constexpr ObjectId block_object_count = (1 << idx_bits);
static constexpr int idx_bits = 7;
static constexpr int block_object_count = (1 << idx_bits);
static constexpr int block_id_max = 1 << (object_id_bits - idx_bits);
private:
void makeBlock();
@@ -104,6 +105,8 @@ ObjectTable<TYPE>::makeBlock()
BlockIdx block_index = blocks_.size();
TableBlock<TYPE> *block = new TableBlock<TYPE>(block_index, this);
blocks_.push_back(block);
if (blocks_.size() >= block_id_max)
internalError("max object table block count exceeded.");
// ObjectId zero is reserved for object_id_null.
int last = (block_index > 0) ? 0 : 1;
for (int i = block_object_count - 1; i >= last; i--) {