From 42c92cbc83a56249203aeb23fe524f9b4eebbdf9 Mon Sep 17 00:00:00 2001 From: Richard Purdie Date: Wed, 22 Feb 2023 13:31:34 +0000 Subject: bitbake: event/cooker/runqueue: Add ability to interrupt longer running code Bitbake is now able to understand when a UI wants it to stop the current processing. There are some long running functions which currently have no mechanism to interrupt them however. This patch adds a call, bb.event.check_for_interrupts(d) which can be placed in long running code and allows an internal state flag within bitbake to be checked. If set, that flag will trigger an exit. This means that Ctrl+C can be made to work in a variety of places where it currently would not. Long running event handlers in OE-Core can also then benefit from this new approach with the addition of the function call as well. (Bitbake rev: b7ed7e9a815c4e10447fd499508be3dbb47f06e8) Signed-off-by: Richard Purdie --- bitbake/lib/bb/cooker.py | 4 ++++ bitbake/lib/bb/event.py | 11 +++++++++++ bitbake/lib/bb/runqueue.py | 15 +++++++++++++++ 3 files changed, 30 insertions(+) diff --git a/bitbake/lib/bb/cooker.py b/bitbake/lib/bb/cooker.py index b673fe10ee..c631ec7e6d 100644 --- a/bitbake/lib/bb/cooker.py +++ b/bitbake/lib/bb/cooker.py @@ -345,6 +345,7 @@ class BBCooker: elif signum == signal.SIGHUP: bb.warn("Cooker received SIGHUP, shutting down...") self.state = state.forceshutdown + bb.event._should_exit.set() def setFeatures(self, features): # we only accept a new feature set if we're in state initial, so we can reset without problems @@ -1520,6 +1521,7 @@ class BBCooker: msg = None interrupted = 0 if halt or self.state == state.forceshutdown: + bb.event._should_exit.set() rq.finish_runqueue(True) msg = "Forced shutdown" interrupted = 2 @@ -1760,6 +1762,7 @@ class BBCooker: self.state = state.forceshutdown else: self.state = state.shutdown + bb.event._should_exit.set() if self.parser: self.parser.shutdown(clean=False) @@ -1770,6 +1773,7 @@ class BBCooker: self.parser.shutdown(clean=False) self.parser.final_cleanup() self.state = state.initial + bb.event._should_exit.clear() def reset(self): if hasattr(bb.parse, "siggen"): diff --git a/bitbake/lib/bb/event.py b/bitbake/lib/bb/event.py index 8b05f93e2f..37cc630c63 100644 --- a/bitbake/lib/bb/event.py +++ b/bitbake/lib/bb/event.py @@ -69,6 +69,7 @@ _eventfilter = None _uiready = False _thread_lock = threading.Lock() _heartbeat_enabled = False +_should_exit = threading.Event() def enable_threadlock(): # Always needed now @@ -86,6 +87,16 @@ def disable_heartbeat(): global _heartbeat_enabled _heartbeat_enabled = False +# +# In long running code, this function should be called periodically +# to check if we should exit due to an interuption (.e.g Ctrl+C from the UI) +# +def check_for_interrupts(d): + global _should_exit + if _should_exit.is_set(): + bb.warn("Exiting due to interrupt.") + raise bb.BBHandledException() + def execute_handler(name, handler, event, d): event.data = d try: diff --git a/bitbake/lib/bb/runqueue.py b/bitbake/lib/bb/runqueue.py index e5bd9311f2..e629ab7e7b 100644 --- a/bitbake/lib/bb/runqueue.py +++ b/bitbake/lib/bb/runqueue.py @@ -655,6 +655,7 @@ class RunQueueData: self.init_progress_reporter.start() self.init_progress_reporter.next_stage() + bb.event.check_for_interrupts(self.cooker.data) # Step A - Work out a list of tasks to run # @@ -803,6 +804,7 @@ class RunQueueData: #self.dump_data() self.init_progress_reporter.next_stage() + bb.event.check_for_interrupts(self.cooker.data) # Resolve recursive 'recrdeptask' dependencies (Part B) # @@ -899,6 +901,7 @@ class RunQueueData: self.runtaskentries[tid].depends.difference_update(recursivetasksselfref) self.init_progress_reporter.next_stage() + bb.event.check_for_interrupts(self.cooker.data) #self.dump_data() @@ -980,6 +983,7 @@ class RunQueueData: mark_active(tid, 1) self.init_progress_reporter.next_stage() + bb.event.check_for_interrupts(self.cooker.data) # Step C - Prune all inactive tasks # @@ -1019,6 +1023,7 @@ class RunQueueData: bb.msg.fatal("RunQueue", "Could not find any tasks with the tasknames %s to run within the recipes of the taskgraphs of the targets %s" % (str(self.cooker.configuration.runall), str(self.targets))) self.init_progress_reporter.next_stage() + bb.event.check_for_interrupts(self.cooker.data) # Handle runonly if self.cooker.configuration.runonly: @@ -1059,6 +1064,7 @@ class RunQueueData: logger.verbose("Assign Weightings") self.init_progress_reporter.next_stage() + bb.event.check_for_interrupts(self.cooker.data) # Generate a list of reverse dependencies to ease future calculations for tid in self.runtaskentries: @@ -1066,6 +1072,7 @@ class RunQueueData: self.runtaskentries[dep].revdeps.add(tid) self.init_progress_reporter.next_stage() + bb.event.check_for_interrupts(self.cooker.data) # Identify tasks at the end of dependency chains # Error on circular dependency loops (length two) @@ -1082,12 +1089,14 @@ class RunQueueData: logger.verbose("Compute totals (have %s endpoint(s))", len(endpoints)) self.init_progress_reporter.next_stage() + bb.event.check_for_interrupts(self.cooker.data) # Calculate task weights # Check of higher length circular dependencies self.runq_weight = self.calculate_task_weights(endpoints) self.init_progress_reporter.next_stage() + bb.event.check_for_interrupts(self.cooker.data) # Sanity Check - Check for multiple tasks building the same provider for mc in self.dataCaches: @@ -1188,6 +1197,7 @@ class RunQueueData: self.init_progress_reporter.next_stage() self.init_progress_reporter.next_stage() + bb.event.check_for_interrupts(self.cooker.data) # Iterate over the task list looking for tasks with a 'setscene' function self.runq_setscene_tids = set() @@ -1200,6 +1210,7 @@ class RunQueueData: self.runq_setscene_tids.add(tid) self.init_progress_reporter.next_stage() + bb.event.check_for_interrupts(self.cooker.data) # Invalidate task if force mode active if self.cooker.configuration.force: @@ -1216,6 +1227,7 @@ class RunQueueData: invalidate_task(fn + ":" + st, True) self.init_progress_reporter.next_stage() + bb.event.check_for_interrupts(self.cooker.data) # Create and print to the logs a virtual/xxxx -> PN (fn) table for mc in taskData: @@ -1228,6 +1240,7 @@ class RunQueueData: bb.parse.siggen.tasks_resolved(virtmap, virtpnmap, self.dataCaches[mc]) self.init_progress_reporter.next_stage() + bb.event.check_for_interrupts(self.cooker.data) bb.parse.siggen.set_setscene_tasks(self.runq_setscene_tids) @@ -1240,6 +1253,7 @@ class RunQueueData: dealtwith.add(tid) todeal.remove(tid) self.prepare_task_hash(tid) + bb.event.check_for_interrupts(self.cooker.data) bb.parse.siggen.writeout_file_checksum_cache() @@ -1483,6 +1497,7 @@ class RunQueue: """ retval = True + bb.event.check_for_interrupts(self.cooker.data) if self.state is runQueuePrepare: # NOTE: if you add, remove or significantly refactor the stages of this -- cgit v1.2.3-54-g00ecf