Add active hooks to metadata

pyperf/_worker.py

@@ -60,14 +60,16 @@ def _compute_values(self, values, nvalue,
 
         task_func = self.task_func
 
-        hook_managers = []
+        hook_managers = {}
         for hook in get_selected_hooks(args.hook):
             try:
-                hook_managers.append(hook())
+                hook_managers[hook.__name__] = hook()
             except HookError as e:
                 print(f"ERROR setting up hook '{hook.__name__}:'", file=sys.stderr)
                 print(str(e), file=sys.stderr)
                 sys.exit(1)
+        if len(hook_managers):
+            self.metadata["hooks"] = ", ".join(hook_managers.keys())
 
         index = 1
         inner_loops = self.inner_loops
@@ -78,7 +80,7 @@ def _compute_values(self, values, nvalue,
                 break
 
             with contextlib.ExitStack() as stack:
-                for hook in hook_managers:
+                for hook in hook_managers.values():
                     stack.enter_context(hook)
                 raw_value = task_func(self, self.loops)
 
@@ -117,7 +119,7 @@ def _compute_values(self, values, nvalue,
 
             index += 1
 
-        for hook in hook_managers:
+        for hook in hook_managers.values():
             hook.teardown(self.metadata)
 
     def collect_metadata(self):

pyperf/tests/test_perf_cli.py

@@ -730,6 +730,7 @@ def test_hook(self):
             bench = pyperf.Benchmark.load(tmp_name)
         metadata = bench.get_metadata()
         assert metadata.get("_test_hook", 0) > 0
+        assert metadata.get("hooks", None) == "_test_hook"
 
 
 class TestConvert(BaseTestCase, unittest.TestCase):