diff options
Diffstat (limited to 'scripts/tracetool/backend/__init__.py')
| -rw-r--r-- | scripts/tracetool/backend/__init__.py | 43 |
1 files changed, 29 insertions, 14 deletions
diff --git a/scripts/tracetool/backend/__init__.py b/scripts/tracetool/backend/__init__.py index 7bfcc86..9109a78 100644 --- a/scripts/tracetool/backend/__init__.py +++ b/scripts/tracetool/backend/__init__.py @@ -1,4 +1,4 @@ -# -*- coding: utf-8 -*- +# SPDX-License-Identifier: GPL-2.0-or-later """ Backend management. @@ -19,11 +19,15 @@ All backends must generate their contents through the 'tracetool.out' routine. Backend attributes ------------------ -========= ==================================================================== -Attribute Description -========= ==================================================================== -PUBLIC If exists and is set to 'True', the backend is considered "public". -========= ==================================================================== +=========================== ==================================================== +Attribute Description +=========================== ==================================================== +PUBLIC If exists and is set to 'True', the backend is + considered "public". +CHECK_TRACE_EVENT_GET_STATE If exists and is set to 'True', the backend-specific + code inside the tracepoint is emitted within an + ``if trace_event_get_state()`` conditional. +=========================== ==================================================== Backend functions @@ -94,29 +98,40 @@ def exists(name): if name == "nop": return True name = name.replace("-", "_") - return tracetool.try_import("tracetool.backend." + name)[1] + return tracetool.try_import("tracetool.backend." + name)[0] class Wrapper: def __init__(self, backends, format): self._backends = [backend.replace("-", "_") for backend in backends] self._format = format.replace("-", "_") + self.check_trace_event_get_state = False for backend in self._backends: assert exists(backend) assert tracetool.format.exists(self._format) + for backend in self.backend_modules(): + check_trace_event_get_state = getattr(backend, "CHECK_TRACE_EVENT_GET_STATE", False) + self.check_trace_event_get_state = self.check_trace_event_get_state or check_trace_event_get_state - def _run_function(self, name, *args, **kwargs): + def backend_modules(self): for backend in self._backends: - func = tracetool.try_import("tracetool.backend." + backend, - name % self._format, None)[1] - if func is not None: - func(*args, **kwargs) + module = tracetool.try_import("tracetool.backend." + backend)[1] + if module is not None: + yield module + + def _run_function(self, name, *args, check_trace_event_get_state=None, **kwargs): + for backend in self.backend_modules(): + func = getattr(backend, name % self._format, None) + if func is not None and \ + (check_trace_event_get_state is None or + check_trace_event_get_state == getattr(backend, 'CHECK_TRACE_EVENT_GET_STATE', False)): + func(*args, **kwargs) def generate_begin(self, events, group): self._run_function("generate_%s_begin", events, group) - def generate(self, event, group): - self._run_function("generate_%s", event, group) + def generate(self, event, group, check_trace_event_get_state=None): + self._run_function("generate_%s", event, group, check_trace_event_get_state=check_trace_event_get_state) def generate_backend_dstate(self, event, group): self._run_function("generate_%s_backend_dstate", event, group) |