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klippy: Rework shutdown handling

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If an MCU signals a shutdown from the background thread, notify the
main thread and handle the shutdown there.  Dispatch shutdown handling
from the main Printer() class instead of from the Toolhead class.
This simplifies the shutdown logic.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2017-10-12 15:15:14 -04:00
parent 3033b03789
commit f8750b142f
4 changed files with 72 additions and 63 deletions
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10
klippy/toolhead.py
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@ -292,7 +292,7 @@ class ToolHead:
self.last_flush_from_idle = True
except:
logging.exception("Exception in flush_handler")
self.force_shutdown()
self.printer.invoke_shutdown("Exception in flush_handler")
return self.reactor.NEVER
# Motor off timer
def _motor_off_handler(self, eventtime):
@ -305,7 +305,7 @@ class ToolHead:
self.motor_off()
except:
logging.exception("Exception in motor_off_handler")
self.force_shutdown()
self.printer.invoke_shutdown("Exception in motor_off_handler")
return eventtime + self.motor_off_time
# Movement commands
def get_position(self):
@ -371,14 +371,12 @@ class ToolHead:
buffer_time = max(0., self.print_time - est_print_time)
return "print_time=%.3f buffer_time=%.3f print_stall=%d" % (
self.print_time, buffer_time, self.print_stall)
def force_shutdown(self):
def do_shutdown(self):
try:
for m in self.all_mcus:
m.force_shutdown()
self.move_queue.reset()
self.reset_print_time()
except:
logging.exception("Exception in force_shutdown")
logging.exception("Exception in do_shutdown")
def get_max_velocity(self):
return self.max_velocity, self.max_accel
def get_max_axis_halt(self):