devicesbus stage

src/core/memory/MemoryPool.h

@@ -59,7 +59,35 @@ public:
             this->release(*b);
             delete b;
         });
-    }
+    BlockPtr allocate(std::size_t requiredSize)
+    {
+        if (requiredSize > m_blockSize) {
+            return {};
+        }
+
+        std::size_t slot = 0;
+        {
+            std::lock_guard<std::mutex> lk(m_mutex);
+            if (m_freeSlots.empty()) {
+                return {};
+            }
+            slot = m_freeSlots.front();
+            m_freeSlots.pop();
+            m_inUse[slot] = true;
+        }
+
+        auto* raw = new PoolBlock{
+            m_storage.data() + slot * m_blockSize,
+            m_blockSize,
+            requiredSize,
+            slot,
+        };
+        return BlockPtr(raw, [this](PoolBlock* b) {
+            if (!b) return;
+            this->release(*b);
+            delete b;
+        });
+
 
     void release(const PoolBlock& block)
     {