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raylib networking: remove locking on UI thread (#36063)

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* use callback queue to make this thread safe and remove locks (which lag ui thread?)

* woah this works

* no more lock!

* always run signal handler and store callbacks, like qt

* debug

* more

* okay not for now

* combine _get_connections and _connection_by_ssid, closer to qt and not an explosion of GetSettings dbus calls

* debug

* try this

* skip

* len

* skip hidden networks

* actually slower

* stash

* back to 8929f37d49

* clean up
pull/36065/head
Shane Smiskol 1 day ago committed by GitHub
parent 5359f6d354
commit 23b4aaf2a5
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2 changed files with 51 additions and 49 deletions
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  1. 26
      system/ui/lib/wifi_manager.py
  2. 74
      system/ui/widgets/network.py

26
system/ui/lib/wifi_manager.py
Unescape View File

@ -133,12 +133,12 @@ class WifiManager:
# State
self._connecting_to_ssid: str = ""
self._last_network_update: float = 0.0
self._callback_queue: list[Callable] = []
# Callbacks
# TODO: implement a callback queue to avoid blocking UI thread
self._need_auth: Callable[[str], None] | None = None
self._activated: Callable[[], None] | None = None
self._forgotten: Callable[[str], None] | None = None
self._forgotten: Callable[[], None] | None = None
self._networks_updated: Callable[[list[Network]], None] | None = None
self._disconnected: Callable[[], None] | None = None
@ -154,7 +154,7 @@ class WifiManager:
def set_callbacks(self, need_auth: Callable[[str], None],
activated: Callable[[], None] | None,
forgotten: Callable[[str], None],
forgotten: Callable[[], None],
networks_updated: Callable[[list[Network]], None],
disconnected: Callable[[], None]):
self._need_auth = need_auth
@ -163,6 +163,15 @@ class WifiManager:
self._networks_updated = networks_updated
self._disconnected = disconnected
def _enqueue_callback(self, cb: Callable, *args):
self._callback_queue.append(lambda: cb(*args))
def process_callbacks(self):
# Call from UI thread to run any pending callbacks
to_run, self._callback_queue = self._callback_queue, []
for cb in to_run:
cb()
def set_active(self, active: bool):
self._active = active
@ -187,7 +196,6 @@ class WifiManager:
with self._conn_monitor.filter(rule, bufsize=SIGNAL_QUEUE_SIZE) as q:
while not self._exit:
# TODO: always run, and ensure callbacks don't block UI thread
if not self._active:
time.sleep(1)
continue
@ -204,19 +212,19 @@ class WifiManager:
if new_state == NMDeviceState.NEED_AUTH and change_reason == NM_DEVICE_STATE_REASON_SUPPLICANT_DISCONNECT and len(self._connecting_to_ssid):
self.forget_connection(self._connecting_to_ssid, block=True)
if self._need_auth is not None:
self._need_auth(self._connecting_to_ssid)
self._enqueue_callback(self._need_auth, self._connecting_to_ssid)
self._connecting_to_ssid = ""
elif new_state == NMDeviceState.ACTIVATED:
if self._activated is not None:
self._update_networks()
self._activated()
self._enqueue_callback(self._activated)
self._connecting_to_ssid = ""
elif new_state == NMDeviceState.DISCONNECTED and change_reason != NM_DEVICE_STATE_REASON_NEW_ACTIVATION:
self._connecting_to_ssid = ""
if self._disconnected is not None:
self._disconnected()
self._enqueue_callback(self._disconnected)
def _network_scanner(self):
self._wait_for_wifi_device()
@ -324,7 +332,7 @@ class WifiManager:
if self._forgotten is not None:
self._update_networks()
self._forgotten(ssid)
self._enqueue_callback(self._forgotten)
if block:
worker()
@ -400,7 +408,7 @@ class WifiManager:
self._networks = networks
if self._networks_updated is not None:
self._networks_updated(self._networks)
self._enqueue_callback(self._networks_updated, self._networks)
def __del__(self):
self.stop()

74
system/ui/widgets/network.py
Unescape View File

@ -1,6 +1,5 @@
from enum import IntEnum
from functools import partial
from threading import Lock
from typing import cast
import pyray as rl
@ -50,7 +49,6 @@ class WifiManagerUI(Widget):
self._networks: list[Network] = []
self._networks_buttons: dict[str, Button] = {}
self._forget_networks_buttons: dict[str, Button] = {}
self._lock = Lock()
self._confirm_dialog = ConfirmDialog("", "Forget", "Cancel")
self.wifi_manager.set_callbacks(need_auth=self._on_need_auth,
@ -71,21 +69,22 @@ class WifiManagerUI(Widget):
gui_app.texture(icon, ICON_SIZE, ICON_SIZE)
def _render(self, rect: rl.Rectangle):
with self._lock:
if not self._networks:
gui_label(rect, "Scanning Wi-Fi networks...", 72, alignment=rl.GuiTextAlignment.TEXT_ALIGN_CENTER)
return
if self.state == UIState.NEEDS_AUTH and self._state_network:
self.keyboard.set_title("Wrong password" if self._password_retry else "Enter password", f"for {self._state_network.ssid}")
self.keyboard.reset()
gui_app.set_modal_overlay(self.keyboard, lambda result: self._on_password_entered(cast(Network, self._state_network), result))
elif self.state == UIState.SHOW_FORGET_CONFIRM and self._state_network:
self._confirm_dialog.set_text(f'Forget Wi-Fi Network "{self._state_network.ssid}"?')
self._confirm_dialog.reset()
gui_app.set_modal_overlay(self._confirm_dialog, callback=lambda result: self.on_forgot_confirm_finished(self._state_network, result))
else:
self._draw_network_list(rect)
self.wifi_manager.process_callbacks()
if not self._networks:
gui_label(rect, "Scanning Wi-Fi networks...", 72, alignment=rl.GuiTextAlignment.TEXT_ALIGN_CENTER)
return
if self.state == UIState.NEEDS_AUTH and self._state_network:
self.keyboard.set_title("Wrong password" if self._password_retry else "Enter password", f"for {self._state_network.ssid}")
self.keyboard.reset()
gui_app.set_modal_overlay(self.keyboard, lambda result: self._on_password_entered(cast(Network, self._state_network), result))
elif self.state == UIState.SHOW_FORGET_CONFIRM and self._state_network:
self._confirm_dialog.set_text(f'Forget Wi-Fi Network "{self._state_network.ssid}"?')
self._confirm_dialog.reset()
gui_app.set_modal_overlay(self._confirm_dialog, callback=lambda result: self.on_forgot_confirm_finished(self._state_network, result))
else:
self._draw_network_list(rect)
def _on_password_entered(self, network: Network, result: int):
if result == 1:
@ -211,36 +210,31 @@ class WifiManagerUI(Widget):
self.wifi_manager.forget_connection(network.ssid)
def _on_network_updated(self, networks: list[Network]):
with self._lock:
self._networks = networks
for n in self._networks:
self._networks_buttons[n.ssid] = Button(n.ssid, partial(self._networks_buttons_callback, n), font_size=55, text_alignment=TextAlignment.LEFT,
button_style=ButtonStyle.NO_EFFECT)
self._forget_networks_buttons[n.ssid] = Button("Forget", partial(self._forget_networks_buttons_callback, n), button_style=ButtonStyle.FORGET_WIFI,
font_size=45)
self._networks = networks
for n in self._networks:
self._networks_buttons[n.ssid] = Button(n.ssid, partial(self._networks_buttons_callback, n), font_size=55, text_alignment=TextAlignment.LEFT,
button_style=ButtonStyle.NO_EFFECT)
self._forget_networks_buttons[n.ssid] = Button("Forget", partial(self._forget_networks_buttons_callback, n), button_style=ButtonStyle.FORGET_WIFI,
font_size=45)
def _on_need_auth(self, ssid):
with self._lock:
network = next((n for n in self._networks if n.ssid == ssid), None)
if network:
self.state = UIState.NEEDS_AUTH
self._state_network = network
self._password_retry = True
network = next((n for n in self._networks if n.ssid == ssid), None)
if network:
self.state = UIState.NEEDS_AUTH
self._state_network = network
self._password_retry = True
def _on_activated(self):
with self._lock:
if self.state == UIState.CONNECTING:
self.state = UIState.IDLE
if self.state == UIState.CONNECTING:
self.state = UIState.IDLE
def _on_forgotten(self, ssid):
with self._lock:
if self.state == UIState.FORGETTING:
self.state = UIState.IDLE
def _on_forgotten(self):
if self.state == UIState.FORGETTING:
self.state = UIState.IDLE
def _on_disconnected(self):
with self._lock:
if self.state == UIState.CONNECTING:
self.state = UIState.IDLE
if self.state == UIState.CONNECTING:
self.state = UIState.IDLE
def main():

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