Revert "Merge branch '917-event-based-pulseaudio'"

This reverts commit 72a888748e, reversing
changes made to d57ef9364a.

This merge causes really high CPU load if using both pasink and
pasource, because those two modules trigger each other, and there's not
a terrible lot I can do about that, unfortunately.

bumblebee-status

@@ -75,7 +75,6 @@ def handle_events(config, update_lock):
 
 
 def main():
-    global started
     config = core.config.Config(sys.argv[1:])
     level = logging.DEBUG if config.debug() else logging.ERROR
     if config.logfile():
@@ -98,8 +97,6 @@ def main():
     core.input.register(None, core.input.WHEEL_UP, "i3-msg workspace prev_on_output")
     core.input.register(None, core.input.WHEEL_DOWN, "i3-msg workspace next_on_output")
 
-    core.event.trigger("start")
-
     update_lock = threading.Lock()
     event_thread = threading.Thread(target=handle_events, args=(config, update_lock, ))
     event_thread.daemon = True
@@ -130,6 +127,7 @@ def main():
     if util.format.asbool(config.get("engine.collapsible", True)) == True:
         core.input.register(None, core.input.MIDDLE_MOUSE, output.toggle_minimize)
 
+    core.event.trigger("start")
     started = True
     signal.signal(10, sig_USR1_handler)
     while True:

bumblebee_status/core/output.py

@@ -1,7 +1,6 @@
 import sys
 import json
 import time
-import threading
 
 import core.theme
 import core.event
@@ -146,7 +145,6 @@ class i3(object):
         self.__content = {}
         self.__theme = theme
         self.__config = config
-        self.__lock = threading.Lock()
         core.event.register("update", self.update)
         core.event.register("start", self.draw, "start")
         core.event.register("draw", self.draw, "statusline")
@@ -178,7 +176,6 @@ class i3(object):
             self.__content[widget_id]["minimized"] = not self.__content[widget_id]["minimized"]
 
     def draw(self, what, args=None):
-        with self.__lock:
         cb = getattr(self, what)
         data = cb(args) if args else cb()
         if "blocks" in data:
@@ -247,10 +244,6 @@ class i3(object):
         return blocks
 
     def update(self, affected_modules=None, redraw_only=False, force=False):
-        with self.__lock:
-            self.update2(affected_modules, redraw_only, force)
-
-    def update2(self, affected_modules=None, redraw_only=False, force=False):
         now = time.time()
         for module in self.__modules:
             if affected_modules and not module.id in affected_modules:

bumblebee_status/modules/core/pulseaudio.py

@@ -33,18 +33,12 @@ Requires the following executable:
 """
 
 import re
-import os
-import time
 import logging
 import functools
-import threading
-import subprocess
-import select
 
 import core.module
 import core.widget
 import core.input
-import core.event
 
 import util.cli
 import util.graph
@@ -109,36 +103,6 @@ class Module(core.module.Module):
         for event in events:
             core.input.register(self, button=event["button"], cmd=event["action"])
 
-        self.__monitor = threading.Thread(target=self.__subscribe, args=())
-        self.__monitor.start()
-
-    def __subscribe(self):
-        self.update2()
-        core.event.trigger("update", [self.id], redraw_only=True)
-        try:
-            proc = subprocess.Popen("pactl subscribe",
-                stdout = subprocess.PIPE,
-                stderr = subprocess.STDOUT,
-                shell = True
-            )
-        except:
-            return
-        while threading.main_thread().is_alive():
-            r, w, e = select.select([proc.stdout], [], [], 1)
-
-            if not (r or w or e):
-                self.update2()
-                core.event.trigger("update", [self.id], redraw_only=True)
-                core.event.trigger("draw")
-                continue # timeout
-            # whateve we got, use it
-            self.update2()
-            core.event.trigger("update", [self.id], redraw_only=True)
-            core.event.trigger("draw")
-            os.set_blocking(proc.stdout.fileno(), False)
-            proc.stdout.read()
-            os.set_blocking(proc.stdout.fileno(), True)
-
     def set_volume(self, amount):
         util.cli.execute(
             "pactl set-{}-{} @DEFAULT_{}@ {}".format(
@@ -236,11 +200,6 @@ class Module(core.module.Module):
         return output
 
     def update(self):
-        if self.__monitor.is_alive():
-            return
-        self.update2()
-
-    def update2(self):
         try:
             self._failed = False
             channel = "sinks" if self._channel == "sink" else "sources"