Revert "toolhead: Use dict for step generation flush times. (#6303)"

This reverts commit 6749985302fe002a9cb5672dab9badb11e4e3c36.

A defect was found in the above commit (the input shaper code calls
note_step_generateion_scan_time() for many steppers, so the
input_shaper class can't be used as the index).

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

1 files changed, 8 insertions, 9 deletions

diff --git a/klippy/toolhead.py b/klippy/toolhead.py
index 8334291e..d8b93825 100644
--- a/klippy/toolhead.py
+++ b/klippy/toolhead.py
@@ -239,8 +239,7 @@ class ToolHead:
         self.drip_completion = None
         # Kinematic step generation scan window time tracking
         self.kin_flush_delay = SDS_CHECK_TIME
-        # Map from requester to requested time
-        self.kin_flush_times = {self: SDS_CHECK_TIME}
+        self.kin_flush_times = []
         self.force_flush_time = self.last_kin_move_time = 0.
         # Setup iterative solver
         ffi_main, ffi_lib = chelper.get_ffi()
@@ -527,15 +526,15 @@ class ToolHead:
         return self.trapq
     def register_step_generator(self, handler):
         self.step_generators.append(handler)
-    def note_step_generation_scan_time(self, requester, delay):
+    def note_step_generation_scan_time(self, delay, old_delay=0.):
         self.flush_step_generation()
-        if delay == self.kin_flush_times.get(requester, None):
-            return
+        cur_delay = self.kin_flush_delay
+        if old_delay:
+            self.kin_flush_times.pop(self.kin_flush_times.index(old_delay))
         if delay:
-            self.kin_flush_times[requester] = delay
-        elif requester in self.kin_flush_times:
-            del self.kin_flush_times[requester]
-        self.kin_flush_delay = max(self.kin_flush_times.values())
+            self.kin_flush_times.append(delay)
+        new_delay = max(self.kin_flush_times + [SDS_CHECK_TIME])
+        self.kin_flush_delay = new_delay
     def register_lookahead_callback(self, callback):
         last_move = self.move_queue.get_last()
         if last_move is None: