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Store: Simplify threads. Tie all threads to progress indicator.

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This commit is contained in:
John Schember 2011-04-22 20:04:50 -04:00
parent 8c51a78c7f
commit 57b3531051
3 changed files with 65 additions and 56 deletions
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64
src/calibre/gui2/store/search/download_thread.py
View File

@ -6,7 +6,6 @@ __license__ = 'GPL 3'
__copyright__ = '2011, John Schember <john@nachtimwald.com>'
__docformat__ = 'restructuredtext en'
import time
import traceback
from contextlib import closing
from threading import Thread
@ -17,7 +16,9 @@ from calibre.utils.magick.draw import thumbnail
class GenericDownloadThreadPool(object):
'''
add_task must be implemented in a subclass.
add_task must be implemented in a subclass and must
GenericDownloadThreadPool.add_task must be called
at the end of the function.
'''
def __init__(self, thread_type, thread_count):
@ -29,10 +30,16 @@ class GenericDownloadThreadPool(object):
self.threads = []
def add_task(self):
raise NotImplementedError()
'''
This must be implemented in a sub class and this function
must be called at the end of the add_task function in
the sub class.
def start_threads(self):
for i in range(self.thread_count):
The implementation of this function (in this base class)
starts any threads necessary to fill the pool if it is
not already full.
'''
for i in xrange(self.thread_count - self.running_threads_count()):
t = self.thread_type(self.tasks, self.results)
self.threads.append(t)
t.start()
@ -60,10 +67,14 @@ class GenericDownloadThreadPool(object):
return not self.results.empty()
def threads_running(self):
return self.running_threads_count() > 0
def running_threads_count(self):
count = 0
for t in self.threads:
if t.is_alive():
return True
return False
count += 1
return count
class SearchThreadPool(GenericDownloadThreadPool):
@ -73,17 +84,16 @@ class SearchThreadPool(GenericDownloadThreadPool):
using start_threads(). Reset by calling abort().
Example:
sp = SearchThreadPool(SearchThread, 3)
add tasks using add_task(...)
sp.start_threads()
all threads have finished.
sp.abort()
add tasks using add_task(...)
sp.start_threads()
sp = SearchThreadPool(3)
sp.add_task(...)
'''
def __init__(self, thread_count):
GenericDownloadThreadPool.__init__(self, SearchThread, thread_count)
def add_task(self, query, store_name, store_plugin, timeout):
self.tasks.put((query, store_name, store_plugin, timeout))
GenericDownloadThreadPool.add_task(self)
class SearchThread(Thread):
@ -113,12 +123,13 @@ class SearchThread(Thread):
class CoverThreadPool(GenericDownloadThreadPool):
'''
Once started all threads run until abort is called.
'''
def __init__(self, thread_count):
GenericDownloadThreadPool.__init__(self, CoverThread, thread_count)
def add_task(self, search_result, update_callback, timeout=5):
self.tasks.put((search_result, update_callback, timeout))
GenericDownloadThreadPool.add_task(self)
class CoverThread(Thread):
@ -136,12 +147,8 @@ class CoverThread(Thread):
self._run = False
def run(self):
while self._run:
while self._run and not self.tasks.empty():
try:
time.sleep(.1)
while not self.tasks.empty():
if not self._run:
break
result, callback, timeout = self.tasks.get()
if result and result.cover_url:
with closing(self.br.open(result.cover_url, timeout=timeout)) as f:
@ -154,12 +161,13 @@ class CoverThread(Thread):
class DetailsThreadPool(GenericDownloadThreadPool):
'''
Once started all threads run until abort is called.
'''
def __init__(self, thread_count):
GenericDownloadThreadPool.__init__(self, DetailsThread, thread_count)
def add_task(self, search_result, store_plugin, update_callback, timeout=10):
self.tasks.put((search_result, store_plugin, update_callback, timeout))
GenericDownloadThreadPool.add_task(self)
class DetailsThread(Thread):
@ -175,12 +183,8 @@ class DetailsThread(Thread):
self._run = False
def run(self):
while self._run:
while self._run and not self.tasks.empty():
try:
time.sleep(.1)
while not self.tasks.empty():
if not self._run:
break
result, store_plugin, callback, timeout = self.tasks.get()
if result:
store_plugin.get_details(result, timeout)

10
src/calibre/gui2/store/search/models.py
View File

@ -14,7 +14,7 @@ from PyQt4.Qt import (Qt, QAbstractItemModel, QVariant, QPixmap, QModelIndex, QS
from calibre.gui2 import NONE
from calibre.gui2.store.search_result import SearchResult
from calibre.gui2.store.search.download_thread import DetailsThreadPool, \
DetailsThread, CoverThreadPool, CoverThread
CoverThreadPool
from calibre.library.caches import _match, CONTAINS_MATCH, EQUALS_MATCH, \
REGEXP_MATCH
from calibre.utils.icu import sort_key
@ -51,10 +51,8 @@ class Matches(QAbstractItemModel):
self.matches = []
self.query = ''
self.search_filter = SearchFilter()
self.cover_pool = CoverThreadPool(CoverThread, 2)
self.cover_pool.start_threads()
self.details_pool = DetailsThreadPool(DetailsThread, 4)
self.details_pool.start_threads()
self.cover_pool = CoverThreadPool(2)
self.details_pool = DetailsThreadPool(4)
self.sort_col = 2
self.sort_order = Qt.AscendingOrder
@ -70,9 +68,7 @@ class Matches(QAbstractItemModel):
self.search_filter.clear_search_results()
self.query = ''
self.cover_pool.abort()
self.cover_pool.start_threads()
self.details_pool.abort()
self.details_pool.start_threads()
self.reset()
def add_result(self, result, store_plugin):

21
src/calibre/gui2/store/search/search.py
View File

@ -13,7 +13,7 @@ from PyQt4.Qt import (Qt, QDialog, QTimer, QCheckBox, QVBoxLayout)
from calibre.gui2 import JSONConfig, info_dialog
from calibre.gui2.progress_indicator import ProgressIndicator
from calibre.gui2.store.search.download_thread import SearchThreadPool, SearchThread
from calibre.gui2.store.search.download_thread import SearchThreadPool
from calibre.gui2.store.search.search_ui import Ui_Dialog
HANG_TIME = 75000 # milliseconds seconds
@ -31,9 +31,10 @@ class SearchDialog(QDialog, Ui_Dialog):
# We keep a cache of store plugins and reference them by name.
self.store_plugins = istores
self.search_pool = SearchThreadPool(SearchThread, SEARCH_THREAD_TOTAL)
self.search_pool = SearchThreadPool(SEARCH_THREAD_TOTAL)
# Check for results and hung threads.
self.checker = QTimer()
self.progress_checker = QTimer()
self.hang_check = 0
# Add check boxes for each store so the user
@ -54,12 +55,15 @@ class SearchDialog(QDialog, Ui_Dialog):
self.search.clicked.connect(self.do_search)
self.checker.timeout.connect(self.get_results)
self.progress_checker.timeout.connect(self.check_progress)
self.results_view.activated.connect(self.open_store)
self.select_all_stores.clicked.connect(self.stores_select_all)
self.select_invert_stores.clicked.connect(self.stores_select_invert)
self.select_none_stores.clicked.connect(self.stores_select_none)
self.finished.connect(self.dialog_closed)
self.progress_checker.start(100)
self.restore_state()
def resize_columns(self):
@ -105,10 +109,9 @@ class SearchDialog(QDialog, Ui_Dialog):
for n in store_names:
if getattr(self, 'store_check_' + n).isChecked():
self.search_pool.add_task(query, n, self.store_plugins[n], TIMEOUT)
if self.search_pool.has_tasks():
if self.search_pool.has_tasks() or self.search_pool.threads_running():
self.hang_check = 0
self.checker.start(100)
self.search_pool.start_threads()
self.pi.startAnimation()
def clean_query(self, query):
@ -181,12 +184,12 @@ class SearchDialog(QDialog, Ui_Dialog):
if self.hang_check >= HANG_TIME:
self.search_pool.abort()
self.checker.stop()
self.pi.stopAnimation()
#self.check_progress()
else:
# Stop the checker if not threads are running.
if not self.search_pool.threads_running() and not self.search_pool.has_tasks():
self.checker.stop()
self.pi.stopAnimation()
#self.check_progress()
while self.search_pool.has_results():
res, store_plugin = self.search_pool.get_result()
@ -202,6 +205,12 @@ class SearchDialog(QDialog, Ui_Dialog):
result = self.results_view.model().get_result(index)
self.store_plugins[result.store_name].open(self, result.detail_item)
def check_progress(self):
if not self.search_pool.threads_running() and not self.results_view.model().cover_pool.threads_running() and not self.results_view.model().details_pool.threads_running():
self.pi.stopAnimation()
else:
self.pi.startAnimation()
def get_store_checks(self):
'''
Returns a list of QCheckBox's for each store.