feat(memory): Add MemPool Free with alignment (alibaba#74)

Author: Eyizoha

include/paimon/memory/memory_pool.h

@@ -74,11 +74,26 @@ class PAIMON_EXPORT MemoryPool {
     ///
     /// Releases a previously allocated memory block back to the pool.
     /// The size must match the size used during allocation.
+    /// The alignment used during allocation is not provided, subclass should store it
+    /// by themselves if needed.
     ///
     /// @param p Pointer to the memory block to deallocate.
     /// @param size Size of the memory block (must match allocation size).
     virtual void Free(void* p, uint64_t size) = 0;
 
+    /// Deallocate memory back to the pool with specified alignment.
+    ///
+    /// Releases a previously allocated memory block back to the pool.
+    /// The size and alignment must match the values used during allocation.
+    /// Subclass can override this method to optimize deallocation based on alignment.
+    ///
+    /// @param p Pointer to the memory block to deallocate.
+    /// @param size Size of the memory block (must match allocation size).
+    /// @param alignment Alignment of the memory block (must match allocation alignment).
+    virtual void Free(void* p, uint64_t size, uint64_t alignment) {
+        Free(p, size);
+    }
+
     /// Get current memory usage.
     ///
     /// Returns the amount of memory currently allocated from this pool.

src/paimon/common/utils/arrow/mem_utils.cpp

@@ -46,8 +46,8 @@ class ArrowMemPoolAdaptor : public arrow::MemoryPool {
         return arrow::Status::OK();
     }
 
-    void Free(uint8_t* buffer, int64_t size, int64_t /*alignment=*/) override {
-        pool_.Free(buffer, size);
+    void Free(uint8_t* buffer, int64_t size, int64_t alignment) override {
+        pool_.Free(buffer, size, alignment);
         stats_.DidFreeBytes(size);
     }
 

src/paimon/global_index/lumina/lumina_memory_pool.h

@@ -44,7 +44,7 @@ class LuminaMemoryPool : public std::pmr::memory_resource {
     }
 
     void do_deallocate(void* p, std::size_t bytes, std::size_t alignment) override {
-        pool_->Free(p, bytes);
+        pool_->Free(p, bytes, alignment);
     }
 
     bool do_is_equal(const std::pmr::memory_resource& other) const noexcept override {