Method test_sys_api

Lib/test/test_perf_profiler.py:215–264

(self)

    @unittest.skipIf(support.check_bolt_optimized(), "fails on BOLT instrumented binaries")
    def test_sys_api(self):
        for define_eval_hook in (False, True):
            code = """if 1:
                    import sys
                    def foo():
                        pass

                    def spam():
                        pass

                    def bar():
                        sys.deactivate_stack_trampoline()
                        foo()
                        sys.activate_stack_trampoline("perf")
                        spam()

                    def baz():
                        bar()

                    sys.activate_stack_trampoline("perf")
                    baz()
                    """
            if define_eval_hook:
                set_eval_hook = """if 1:
                                import _testinternalcapi
                                _testinternalcapi.set_eval_frame_record([])
"""
                code = set_eval_hook + code
            with temp_dir() as script_dir:
                script = make_script(script_dir, "perftest", code)
                env = {**os.environ, "PYTHON_JIT": "0"}
                with subprocess.Popen(
                    [sys.executable, script],
                    text=True,
                    stderr=subprocess.PIPE,
                    stdout=subprocess.PIPE,
                    env=env,
                ) as process:
                    stdout, stderr = process.communicate()

            self.assertEqual(stderr, "")
            self.assertEqual(stdout, "")

            perf_file = pathlib.Path(f"/tmp/perf-{process.pid}.map")
            self.assertTrue(perf_file.exists())
            perf_file_contents = perf_file.read_text()
            self.assertNotIn(f"py::foo:{script}", perf_file_contents)
            self.assertIn(f"py::spam:{script}", perf_file_contents)
            self.assertIn(f"py::bar:{script}", perf_file_contents)
            self.assertIn(f"py::baz:{script}", perf_file_contents)

    def test_sys_api_with_existing_trampoline(self):
        code = """if 1: