[3.12] gh-112536: Add --tsan test for reasonable TSAN execution times. (gh-116601) (#116929)

(cherry picked from commit ebf29b3)

Co-authored-by: Donghee Na <donghee.na@python.org>

Lib/test/libregrtest/main.py

@@ -18,6 +18,7 @@ from .results import TestResults, EXITCODE_INTERRUPTED
 from .runtests import RunTests, HuntRefleak
 from .setup import setup_process, setup_test_dir
 from .single import run_single_test, PROGRESS_MIN_TIME
+from .tsan import setup_tsan_tests
 from .utils import (
     StrPath, StrJSON, TestName, TestList, TestTuple, TestFilter,
     strip_py_suffix, count, format_duration,
@@ -56,6 +57,7 @@ class Regrtest:
         self.quiet: bool = ns.quiet
         self.pgo: bool = ns.pgo
         self.pgo_extended: bool = ns.pgo_extended
+        self.tsan: bool = ns.tsan
 
         # Test results
         self.results: TestResults = TestResults()
@@ -182,6 +184,9 @@ class Regrtest:
             # add default PGO tests if no tests are specified
             setup_pgo_tests(self.cmdline_args, self.pgo_extended)
 
+        if self.tsan:
+            setup_tsan_tests(self.cmdline_args)
+
         exclude_tests = set()
         if self.exclude:
             for arg in self.cmdline_args: