SQL Query performance gains added and memory footprint reduced.

SickBeard.py

@@ -83,6 +83,7 @@ def loadShowsFromDB():
     myDB = db.DBConnection()
     sqlResults = myDB.select("SELECT * FROM tv_shows")
 
+    sickbeard.showList = []
     for sqlShow in sqlResults:
         try:
             curShow = TVShow(int(sqlShow["indexer"]), int(sqlShow["indexer_id"]))

sickbeard/__init__.py

@@ -22,7 +22,8 @@ import webbrowser
 import time
 import datetime
 import socket
-import os, sys, subprocess, re
+import os
+import re
 
 from urllib2 import getproxies
 from threading import Lock
@@ -90,10 +91,10 @@ traktCheckerScheduler = None
 showList = None
 loadingShowList = None
 
-providerList = None
+providerList = []
-newznabProviderList = None
+newznabProviderList = []
-torrentRssProviderList = None
+torrentRssProviderList = []
-metadata_provider_dict = None
+metadata_provider_dict = {}
 
 NEWEST_VERSION = None
 NEWEST_VERSION_STRING = None
@@ -102,7 +103,6 @@ AUTO_UPDATE = None
 CUR_COMMIT_HASH = None
 
 INIT_LOCK = Lock()
-__INITIALIZED__ = False
 started = False
 restarted = False
 
@@ -161,7 +161,7 @@ INDEXER_DEFAULT = None
 INDEXER_TIMEOUT = None
 SCENE_DEFAULT = None
 ANIME_DEFAULT = None
-PROVIDER_ORDER = None
+PROVIDER_ORDER = []
 
 NAMING_MULTI_EP = None
 NAMING_PATTERN = None
@@ -413,17 +413,17 @@ TIME_PRESET_W_SECONDS = None
 TIMEZONE_DISPLAY = None
 
 USE_SUBTITLES = False
-SUBTITLES_LANGUAGES = None
+SUBTITLES_LANGUAGES = []
 SUBTITLES_DIR = ''
-SUBTITLES_SERVICES_LIST = None
+SUBTITLES_SERVICES_LIST = []
-SUBTITLES_SERVICES_ENABLED = None
+SUBTITLES_SERVICES_ENABLED = []
 SUBTITLES_HISTORY = False
 SUBTITLES_FINDER_FREQUENCY = 1
 
 USE_FAILED_DOWNLOADS = False
 DELETE_FAILED = False
 
-EXTRA_SCRIPTS = None
+EXTRA_SCRIPTS = []
 
 GIT_PATH = None
 
@@ -433,8 +433,8 @@ CALENDAR_UNPROTECTED = False
 
 TMDB_API_KEY = 'edc5f123313769de83a71e157758030b'
 
-__INITIALIZED__ = False
 
+__INITIALIZED__ = False
 def initialize(consoleLogging=True):
     with INIT_LOCK:
 
@@ -478,7 +478,7 @@ def initialize(consoleLogging=True):
             USE_FAILED_DOWNLOADS, DELETE_FAILED, ANON_REDIRECT, LOCALHOST_IP, TMDB_API_KEY, DEBUG, PROXY_SETTING, \
             AUTOPOSTPROCESSER_FREQUENCY, DEFAULT_AUTOPOSTPROCESSER_FREQUENCY, MIN_AUTOPOSTPROCESSER_FREQUENCY, \
             ANIME_DEFAULT, NAMING_ANIME, ANIMESUPPORT, USE_ANIDB, ANIDB_USERNAME, ANIDB_PASSWORD, ANIDB_USE_MYLIST, \
-            ANIME_SPLIT_HOME, maintenanceScheduler, SCENE_DEFAULT, RES
+            ANIME_SPLIT_HOME, maintenanceScheduler, SCENE_DEFAULT
 
         if __INITIALIZED__:
             return False
@@ -1791,17 +1791,3 @@ def getEpList(epIDs, showid=None):
         epList.append(curEpObj)
 
     return epList
-
-
-def autoreload_shutdown():
-    logger.log('SickRage is now auto-reloading, please stand by ...')
-
-    # halt all tasks
-    halt()
-
-    # save  settings
-    saveAll()
-
-    if CREATEPID:
-        logger.log(u"Removing pidfile " + str(PIDFILE))
-        remove_pid_file(PIDFILE)

sickbeard/db.py

@@ -63,7 +63,7 @@ class DBConnection(object):
     def reconnect(self):
         """Closes the existing database connection and re-opens it."""
         self.close()
-        self.connection = sqlite3.connect(dbFilename(self.filename, self.suffix), 20)
+        self.connection = sqlite3.connect(dbFilename(self.filename, self.suffix), 20, check_same_thread=False)
         self.connection.isolation_level = None
 
         if self.row_type == "dict":
@@ -164,9 +164,6 @@ class DBConnection(object):
                     logger.log(u"Fatal error executing query: " + ex(e), logger.ERROR)
                     raise
 
-            # cleanup
-            del querylist
-
         return sqlResult
 
     def action(self, query, args=None, fetchall=False, fetchone=False):

sickbeard/scene_exceptions.py

@@ -18,6 +18,7 @@
 
 import re
 import time
+import threading
 import sickbeard
 
 from lib import adba
@@ -26,6 +27,8 @@ from sickbeard import name_cache
 from sickbeard import logger
 from sickbeard import db
 
+scene_lock = threading.Lock()
+
 def shouldRefresh(list):
     MAX_REFRESH_AGE_SECS = 86400  # 1 day
 
@@ -59,6 +62,7 @@ def get_scene_exceptions(indexer_id, season=-1):
         if season == 1:  # if we where looking for season 1 we can add generic names
             exceptionsList += get_scene_exceptions(indexer_id, season=-1)
 
+    del exceptions
     return exceptionsList
 
 
@@ -74,6 +78,7 @@ def get_all_scene_exceptions(indexer_id):
                 exceptionsList[cur_exception["season"]] = []
             exceptionsList[cur_exception["season"]].append(cur_exception["show_name"])
 
+    del exceptions
     return exceptionsList
 
 
@@ -121,6 +126,10 @@ def get_scene_exception_by_name_multiple(show_name):
                 sickbeard.helpers.sanitizeSceneName(cur_exception_name).lower().replace('.', ' ')):
             logger.log(u"Scene exception lookup got indexer id " + str(cur_indexer_id) + u", using that", logger.DEBUG)
             out.append((cur_indexer_id, cur_season))
+
+    # cleanup
+    del all_exception_results
+
     if out:
         return out
     else:
@@ -210,7 +219,6 @@ def retrieve_exceptions():
         logger.log(u"No scene exceptions update needed")
 
     # cleanup
-    del existing_exceptions
     del exception_dict
 
 def update_scene_exceptions(indexer_id, scene_exceptions):
@@ -222,7 +230,7 @@ def update_scene_exceptions(indexer_id, scene_exceptions):
     myDB.action('DELETE FROM scene_exceptions WHERE indexer_id=? and custom=1', [indexer_id])
 
     logger.log(u"Updating scene exceptions", logger.MESSAGE)
-    for cur_season in [-1] + sickbeard.scene_exceptions.get_scene_seasons(indexer_id):
+    for cur_season in [-1] + get_scene_seasons(indexer_id):
         for cur_exception in scene_exceptions:
             myDB.action("INSERT INTO scene_exceptions (indexer_id, show_name, season, custom) VALUES (?,?,?,?)",
                         [indexer_id, cur_exception, cur_season, 1])