Update README and version; fix shared memory unregistration

README.md

@@ -8,6 +8,7 @@
 A C++ local database library with cross language bindings. Aiming to be a fast, lightweight, and easy-to-use data communication solution for RPC and coupled modeling in scientific computing.
 
 ## What's new
+- **2025-12-31(Bug Fix)**: Fixed an issue where shared memory segments were not being properly unregistered from the resource tracker upon closing, which could lead to resource leaks. (PR #17)
 - **2025-12-15 (Release Improvement)**: Enabled distribution of pre-compiled binary wheels for macOS (Intel/Apple Silicon) and Linux (x86_64/aarch64), eliminating the need for local compilation tools during installation. (PR #15)
 - **2025-12-10 (Bug Fix)**: Fixed the data type mapping for `U32` fields in Python bindings to ensure correct representation as unsigned 32-bit integers in NumPy arrays. (PR #13)
 - **2025-12-10 (Bug Fix)**: Fixed an out-of-bounds access issue in `FastVectorDbLayer::Impl::getFieldOffset()` when the field index is equal to the field count. (PR #12)

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "fastdb4py"
-version = "0.1.8"
+version = "0.1.9"
 description = "FastCarto database bindings"
 readme = "README.md"
 requires-python = ">=3.10"

python/fastdb4py/orm/__init__.py

@@ -4,8 +4,8 @@
 import numpy as np
 from pathlib import Path
 from dataclasses import dataclass
-from multiprocessing import shared_memory
 from typing import List, TypeVar, Type, Any, Generic
+from multiprocessing import shared_memory, resource_tracker
 
 from .. import core
 from .table import Table
@@ -314,8 +314,15 @@ def get(self, feature_type: Type[T], name: str) -> T | None:
         return feature_type.map_from(self._origin, of)
 
     def close(self):
-        """Close the database and release resources."""
+        """
+        Close the database and release resources.
+
+        Warning:
+            After calling this method, the shared memory database will no longer be accessible.
+            Make sure to unlink the shared memory if you want to completely remove it through the unlink() method by other processes.
+        """
         if self._shm:
+            resource_tracker.unregister(self._shm._name, 'shared_memory')
             self._shm.close()
             self._shm = None
             self._origin = None