def _schedule_callback(prev, next): ''' Called when a context is stopped or a new context is made runnable. ''' try: if not prev and not next: return if next: register_tasklet_info(next) # Ok, making next runnable: set the tracing facility in it. debugger = GetGlobalDebugger() if debugger is not None and next.frame: if hasattr(next.frame, 'f_trace'): next.frame.f_trace = debugger.trace_dispatch debugger = None if prev: register_tasklet_info(prev) try: for tasklet_ref, tasklet_info in list(_weak_tasklet_registered_to_info.items()): # Make sure it's a copy! tasklet = tasklet_ref() if tasklet is None or not tasklet.alive: # Garbage-collected already! try: del _weak_tasklet_registered_to_info[tasklet_ref] except KeyError: pass if tasklet_info.frame_id is not None: removeCustomFrame(tasklet_info.frame_id) else: if tasklet.paused or tasklet.blocked or tasklet.scheduled: if tasklet.frame and tasklet.frame.f_back: f_back = tasklet.frame.f_back _filename, base = GetFilenameAndBase(f_back) is_file_to_ignore = DictContains(DONT_TRACE, base) if not is_file_to_ignore: if tasklet_info.frame_id is None: tasklet_info.frame_id = addCustomFrame(f_back, tasklet_info.tasklet_name, tasklet.thread_id) else: updateCustomFrame(tasklet_info.frame_id, f_back, tasklet.thread_id) elif tasklet.is_current: if tasklet_info.frame_id is not None: # Remove info about stackless suspended when it starts to run. removeCustomFrame(tasklet_info.frame_id) tasklet_info.frame_id = None finally: tasklet = None tasklet_info = None f_back = None except: import traceback;traceback.print_exc() if _application_set_schedule_callback is not None: return _application_set_schedule_callback(prev, next)
def _schedule_callback(prev, next): ''' Called when a context is stopped or a new context is made runnable. ''' try: if not prev and not next: return current_frame = sys._getframe() if next: register_tasklet_info(next) # Ok, making next runnable: set the tracing facility in it. debugger = GetGlobalDebugger() if debugger is not None: next.trace_function = debugger.trace_dispatch frame = next.frame if frame is current_frame: frame = frame.f_back if hasattr(frame, 'f_trace'): # Note: can be None (but hasattr should cover for that too). frame.f_trace = debugger.trace_dispatch debugger = None if prev: register_tasklet_info(prev) try: for tasklet_ref, tasklet_info in list(_weak_tasklet_registered_to_info.items()): # Make sure it's a copy! tasklet = tasklet_ref() if tasklet is None or not tasklet.alive: # Garbage-collected already! try: del _weak_tasklet_registered_to_info[tasklet_ref] except KeyError: pass if tasklet_info.frame_id is not None: removeCustomFrame(tasklet_info.frame_id) else: is_running = stackless.get_thread_info(tasklet.thread_id)[1] is tasklet if tasklet is prev or (tasklet is not next and not is_running): # the tasklet won't run after this scheduler action: # - the tasklet is the previous tasklet # - it is not the next tasklet and it is not an already running tasklet frame = tasklet.frame if frame is current_frame: frame = frame.f_back if frame is not None: _filename, base = GetFilenameAndBase(frame) # print >>sys.stderr, "SchedCB: %r, %d, '%s', '%s'" % (tasklet, frame.f_lineno, _filename, base) is_file_to_ignore = DictContains(DONT_TRACE, base) if not is_file_to_ignore: tasklet_info.update_name() if tasklet_info.frame_id is None: tasklet_info.frame_id = addCustomFrame(frame, tasklet_info.tasklet_name, tasklet.thread_id) else: updateCustomFrame(tasklet_info.frame_id, frame, tasklet.thread_id, name=tasklet_info.tasklet_name) elif tasklet is next or is_running: if tasklet_info.frame_id is not None: # Remove info about stackless suspended when it starts to run. removeCustomFrame(tasklet_info.frame_id) tasklet_info.frame_id = None finally: tasklet = None tasklet_info = None frame = None except: import traceback;traceback.print_exc() if _application_set_schedule_callback is not None: return _application_set_schedule_callback(prev, next)