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toolhead: Keep stepcompress move history relative to current time (#6439) 

Expire history relative to current time rather than last move in history queue

Signed-off-by: Francois Chagnon <fc@francoischagnon.net>
This commit is contained in:
Francois Chagnon 2023-12-30 11:34:21 -05:00 committed by GitHub
parent b502558052
commit d7f6348ae6
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
10 changed files with 54 additions and 27 deletions
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6
klippy/chelper/__init__.py
View File

@ -60,7 +60,8 @@ defs_stepcompress = """
void steppersync_free(struct steppersync *ss);
void steppersync_set_time(struct steppersync *ss
, double time_offset, double mcu_freq);
int steppersync_flush(struct steppersync *ss, uint64_t move_clock);
int steppersync_flush(struct steppersync *ss, uint64_t move_clock
, uint64_t clear_history_clock);
"""
defs_itersolve = """
@ -94,7 +95,8 @@ defs_trapq = """
, double start_pos_x, double start_pos_y, double start_pos_z
, double axes_r_x, double axes_r_y, double axes_r_z
, double start_v, double cruise_v, double accel);
void trapq_finalize_moves(struct trapq *tq, double print_time);
void trapq_finalize_moves(struct trapq *tq, double print_time
, double clear_history_time);
void trapq_set_position(struct trapq *tq, double print_time
, double pos_x, double pos_y, double pos_z);
int trapq_extract_old(struct trapq *tq, struct pull_move *p, int max

29
klippy/chelper/stepcompress.c
View File

@ -54,8 +54,6 @@ struct step_move {
int16_t add;
};
#define HISTORY_EXPIRE (30.0)
struct history_steps {
struct list_node node;
uint64_t first_clock, last_clock;
@ -292,6 +290,13 @@ free_history(struct stepcompress *sc, uint64_t end_clock)
}
}
// Expire the stepcompress history older than the given clock
static void
stepcompress_history_expire(struct stepcompress *sc, uint64_t end_clock)
{
free_history(sc, end_clock);
}
// Free memory associated with a 'stepcompress' object
void __visible
stepcompress_free(struct stepcompress *sc)
@ -322,9 +327,6 @@ calc_last_step_print_time(struct stepcompress *sc)
{
double lsc = sc->last_step_clock;
sc->last_step_print_time = sc->mcu_time_offset + (lsc - .5) / sc->mcu_freq;
if (lsc > sc->mcu_freq * HISTORY_EXPIRE)
free_history(sc, lsc - sc->mcu_freq * HISTORY_EXPIRE);
}
// Set the conversion rate of 'print_time' to mcu clock
@ -731,6 +733,18 @@ steppersync_set_time(struct steppersync *ss, double time_offset
}
}
// Expire the stepcompress history before the given clock time
static void
steppersync_history_expire(struct steppersync *ss, uint64_t end_clock)
{
int i;
for (i = 0; i < ss->sc_num; i++)
{
struct stepcompress *sc = ss->sc_list[i];
stepcompress_history_expire(sc, end_clock);
}
}
// Implement a binary heap algorithm to track when the next available
// 'struct move' in the mcu will be available
static void
@ -758,7 +772,8 @@ heap_replace(struct steppersync *ss, uint64_t req_clock)
// Find and transmit any scheduled steps prior to the given 'move_clock'
int __visible
steppersync_flush(struct steppersync *ss, uint64_t move_clock)
steppersync_flush(struct steppersync *ss, uint64_t move_clock
, uint64_t clear_history_clock)
{
// Flush each stepcompress to the specified move_clock
int i;
@ -806,5 +821,7 @@ steppersync_flush(struct steppersync *ss, uint64_t move_clock)
// Transmit commands
if (!list_empty(&msgs))
serialqueue_send_batch(ss->sq, ss->cq, &msgs);
steppersync_history_expire(ss, clear_history_clock);
return 0;
}

3
klippy/chelper/stepcompress.h
View File

@ -42,6 +42,7 @@ struct steppersync *steppersync_alloc(
void steppersync_free(struct steppersync *ss);
void steppersync_set_time(struct steppersync *ss, double time_offset
, double mcu_freq);
int steppersync_flush(struct steppersync *ss, uint64_t move_clock);
int steppersync_flush(struct steppersync *ss, uint64_t move_clock
, uint64_t clear_history_clock);
#endif // stepcompress.h

10
klippy/chelper/trapq.c
View File

@ -163,11 +163,10 @@ trapq_append(struct trapq *tq, double print_time
}
}
#define HISTORY_EXPIRE (30.0)
// Expire any moves older than `print_time` from the trapezoid velocity queue
void __visible
trapq_finalize_moves(struct trapq *tq, double print_time)
trapq_finalize_moves(struct trapq *tq, double print_time
, double clear_history_time)
{
struct move *head_sentinel = list_first_entry(&tq->moves, struct move,node);
struct move *tail_sentinel = list_last_entry(&tq->moves, struct move, node);
@ -190,10 +189,9 @@ trapq_finalize_moves(struct trapq *tq, double print_time)
if (list_empty(&tq->history))
return;
struct move *latest = list_first_entry(&tq->history, struct move, node);
double expire_time = latest->print_time + latest->move_t - HISTORY_EXPIRE;
for (;;) {
struct move *m = list_last_entry(&tq->history, struct move, node);
if (m == latest || m->print_time + m->move_t > expire_time)
if (m == latest || m->print_time + m->move_t > clear_history_time)
break;
list_del(&m->node);
free(m);
@ -206,7 +204,7 @@ trapq_set_position(struct trapq *tq, double print_time
, double pos_x, double pos_y, double pos_z)
{
// Flush all moves from trapq
trapq_finalize_moves(tq, NEVER_TIME);
trapq_finalize_moves(tq, NEVER_TIME, 0);
// Prune any moves in the trapq history that were interrupted
while (!list_empty(&tq->history)) {

3
klippy/chelper/trapq.h
View File

@ -43,7 +43,8 @@ void trapq_append(struct trapq *tq, double print_time
, double start_pos_x, double start_pos_y, double start_pos_z
, double axes_r_x, double axes_r_y, double axes_r_z
, double start_v, double cruise_v, double accel);
void trapq_finalize_moves(struct trapq *tq, double print_time);
void trapq_finalize_moves(struct trapq *tq, double print_time
, double clear_history_time);
void trapq_set_position(struct trapq *tq, double print_time
, double pos_x, double pos_y, double pos_z);
int trapq_extract_old(struct trapq *tq, struct pull_move *p, int max

3
klippy/extras/force_move.py
View File

@ -86,7 +86,8 @@ class ForceMove:
0., 0., 0., axis_r, 0., 0., 0., cruise_v, accel)
print_time = print_time + accel_t + cruise_t + accel_t
stepper.generate_steps(print_time)
self.trapq_finalize_moves(self.trapq, print_time + 99999.9)
self.trapq_finalize_moves(self.trapq, print_time + 99999.9,
print_time + 99999.9)
stepper.set_trapq(prev_trapq)
stepper.set_stepper_kinematics(prev_sk)
toolhead.note_kinematic_activity(print_time)

3
klippy/extras/manual_stepper.py
View File

@ -67,7 +67,8 @@ class ManualStepper:
0., cruise_v, accel)
self.next_cmd_time = self.next_cmd_time + accel_t + cruise_t + accel_t
self.rail.generate_steps(self.next_cmd_time)
self.trapq_finalize_moves(self.trapq, self.next_cmd_time + 99999.9)
self.trapq_finalize_moves(self.trapq, self.next_cmd_time + 99999.9,
self.next_cmd_time + 99999.9)
toolhead = self.printer.lookup_object('toolhead')
toolhead.note_kinematic_activity(self.next_cmd_time)
if sync:

6
klippy/kinematics/extruder.py
View File

@ -211,8 +211,8 @@ class PrinterExtruder:
gcode.register_mux_command("ACTIVATE_EXTRUDER", "EXTRUDER",
self.name, self.cmd_ACTIVATE_EXTRUDER,
desc=self.cmd_ACTIVATE_EXTRUDER_help)
def update_move_time(self, flush_time):
self.trapq_finalize_moves(self.trapq, flush_time)
def update_move_time(self, flush_time, clear_history_time):
self.trapq_finalize_moves(self.trapq, flush_time, clear_history_time)
def get_status(self, eventtime):
sts = self.heater.get_status(eventtime)
sts['can_extrude'] = self.heater.can_extrude
@ -313,7 +313,7 @@ class PrinterExtruder:
class DummyExtruder:
def __init__(self, printer):
self.printer = printer
def update_move_time(self, flush_time):
def update_move_time(self, flush_time, clear_history_time):
pass
def check_move(self, move):
raise move.move_error("Extrude when no extruder present")

7
klippy/mcu.py
View File

@ -955,7 +955,7 @@ class MCU:
self._reserved_move_slots += 1
def register_flush_callback(self, callback):
self._flush_callbacks.append(callback)
def flush_moves(self, print_time):
def flush_moves(self, print_time, clear_history_time):
if self._steppersync is None:
return
clock = self.print_time_to_clock(print_time)
@ -963,7 +963,10 @@ class MCU:
return
for cb in self._flush_callbacks:
cb(print_time, clock)
ret = self._ffi_lib.steppersync_flush(self._steppersync, clock)
clear_history_clock = \
max(0, self.print_time_to_clock(clear_history_time))
ret = self._ffi_lib.steppersync_flush(self._steppersync, clock,
clear_history_clock)
if ret:
raise error("Internal error in MCU '%s' stepcompress"
% (self._name,))

11
klippy/toolhead.py
View File

@ -195,6 +195,7 @@ MIN_KIN_TIME = 0.100
MOVE_BATCH_TIME = 0.500
STEPCOMPRESS_FLUSH_TIME = 0.050
SDS_CHECK_TIME = 0.001 # step+dir+step filter in stepcompress.c
MOVE_HISTORY_EXPIRE = 30.
DRIP_SEGMENT_TIME = 0.050
DRIP_TIME = 0.100
@ -289,13 +290,15 @@ class ToolHead:
for sg in self.step_generators:
sg(sg_flush_time)
self.last_sg_flush_time = sg_flush_time
clear_history_time = self.mcu.estimated_print_time(
self.reactor.monotonic() - MOVE_HISTORY_EXPIRE)
# Free trapq entries that are no longer needed
free_time = sg_flush_time - self.kin_flush_delay
self.trapq_finalize_moves(self.trapq, free_time)
self.extruder.update_move_time(free_time)
self.trapq_finalize_moves(self.trapq, free_time, clear_history_time)
self.extruder.update_move_time(free_time, clear_history_time)
# Flush stepcompress and mcu steppersync
for m in self.all_mcus:
m.flush_moves(flush_time)
m.flush_moves(flush_time, clear_history_time)
self.last_flush_time = flush_time
def _advance_move_time(self, next_print_time):
pt_delay = self.kin_flush_delay + STEPCOMPRESS_FLUSH_TIME
@ -522,7 +525,7 @@ class ToolHead:
self.move_queue.flush()
except DripModeEndSignal as e:
self.move_queue.reset()
self.trapq_finalize_moves(self.trapq, self.reactor.NEVER)
self.trapq_finalize_moves(self.trapq, self.reactor.NEVER, 0)
# Exit "Drip" state
self.reactor.update_timer(self.flush_timer, self.reactor.NOW)
self.flush_step_generation()