Preview process: Replaced Process with Thread if running on Python 3.12+

lib/esbonio/esbonio/lsp/sphinx/__init__.py

@@ -2,12 +2,14 @@
 import logging
 import pathlib
 import platform
+import sys
 import traceback
 import typing
 import warnings
 from functools import partial
 from multiprocessing import Process
 from multiprocessing import Queue
+from threading import Thread
 from typing import IO
 from typing import Any
 from typing import Dict
@@ -48,6 +50,12 @@
 
 from .line_number_transform import LineNumberTransform
 
+# Use a Thread as a preview server instead of Process for Python 3.12+
+# Usable since Thread and Process shares the same API
+PreviewExecutor = Process
+if sys.version_info.major >= 3 and sys.version_info.minor >= 12:
+    PreviewExecutor = Thread
+
 __all__ = [
     "InitializationOptions",
     "MissingConfigError",
@@ -434,14 +442,14 @@ def preview(self, options: Dict[str, Any]) -> Dict[str, Any]:
             server = make_preview_server(self.app.outdir)  # type: ignore[arg-type]
             self.preview_port = server.server_port
 
-            self.preview_process = Process(target=server.serve_forever, daemon=True)
+            self.preview_process = PreviewExecutor(target=server.serve_forever, daemon=True)
             self.preview_process.start()
 
         if not self.preview_process and not IS_LINUX:
             self.logger.debug("Starting preview server")
 
             q: Queue = Queue()
-            self.preview_process = Process(
+            self.preview_process = PreviewExecutor(
                 target=start_preview_server, args=(q, self.app.outdir), daemon=True
             )
             self.preview_process.start()