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Fix a memory leak in the Copy to library operation

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This commit is contained in:
Kovid Goyal 2011-09-13 20:07:44 -06:00
parent 08ce94f3a0
commit 88627828b7
3 changed files with 34 additions and 16 deletions
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4
src/calibre/gui2/actions/copy_to_library.py
View File

@ -53,9 +53,11 @@ class Worker(Thread): # {{{
def doit(self):
from calibre.library.database2 import LibraryDatabase2
newdb = LibraryDatabase2(self.loc)
newdb = LibraryDatabase2(self.loc, is_second_db=True)
with closing(newdb):
self._doit(newdb)
newdb.break_cycles()
del newdb
def _doit(self, newdb):
for i, x in enumerate(self.ids):

6
src/calibre/library/database2.py
View File

@ -161,7 +161,8 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
return path and os.path.exists(os.path.join(path, 'metadata.db'))
def __init__(self, library_path, row_factory=False, default_prefs=None,
read_only=False):
read_only=False, is_second_db=False):
self.is_second_db = is_second_db
try:
if isbytestring(library_path):
library_path = library_path.decode(filesystem_encoding)
@ -263,7 +264,8 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
migrate_preference('user_categories', {})
migrate_preference('saved_searches', {})
set_saved_searches(self, 'saved_searches')
if not self.is_second_db:
set_saved_searches(self, 'saved_searches')
# migrate grouped_search_terms
if self.prefs.get('grouped_search_terms', None) is None:

40
src/calibre/utils/search_query_parser.py
View File

@ -16,11 +16,11 @@ methods :method:`SearchQueryParser.universal_set` and
If this module is run, it will perform a series of unit tests.
'''
import sys, operator
import sys, operator, weakref
from calibre.utils.pyparsing import CaselessKeyword, Group, Forward, \
CharsNotIn, Suppress, OneOrMore, MatchFirst, CaselessLiteral, \
Optional, NoMatch, ParseException, QuotedString
from calibre.utils.pyparsing import (CaselessKeyword, Group, Forward,
CharsNotIn, Suppress, OneOrMore, MatchFirst, CaselessLiteral,
Optional, NoMatch, ParseException, QuotedString)
from calibre.constants import preferred_encoding
from calibre.utils.icu import sort_key
from calibre import prints
@ -37,11 +37,19 @@ class SavedSearchQueries(object):
def __init__(self, db, _opt_name):
self.opt_name = _opt_name;
self.db = db
if db is not None:
self.queries = db.prefs.get(self.opt_name, {})
else:
self.queries = {}
try:
self._db = weakref.ref(db)
except:
# db could be None
self._db = lambda : None
@property
def db(self):
return self._db()
def force_unicode(self, x):
if not isinstance(x, unicode):
@ -49,21 +57,27 @@ class SavedSearchQueries(object):
return x
def add(self, name, value):
self.queries[self.force_unicode(name)] = self.force_unicode(value).strip()
self.db.prefs[self.opt_name] = self.queries
db = self.db
if db is not None:
self.queries[self.force_unicode(name)] = self.force_unicode(value).strip()
db.prefs[self.opt_name] = self.queries
def lookup(self, name):
return self.queries.get(self.force_unicode(name), None)
def delete(self, name):
self.queries.pop(self.force_unicode(name), False)
self.db.prefs[self.opt_name] = self.queries
db = self.db
if db is not None:
self.queries.pop(self.force_unicode(name), False)
db.prefs[self.opt_name] = self.queries
def rename(self, old_name, new_name):
self.queries[self.force_unicode(new_name)] = \
self.queries.get(self.force_unicode(old_name), None)
self.queries.pop(self.force_unicode(old_name), False)
self.db.prefs[self.opt_name] = self.queries
db = self.db
if db is not None:
self.queries[self.force_unicode(new_name)] = \
self.queries.get(self.force_unicode(old_name), None)
self.queries.pop(self.force_unicode(old_name), False)
db.prefs[self.opt_name] = self.queries
def names(self):
return sorted(self.queries.keys(),key=sort_key)