def acquire_handle(self, filename, for_write, length=0):
# this will block until a new file handle can be made
if filename not in self.file_to_torrent:
raise UnregisteredFileException()
if filename in self.open_file_to_handles:
handle = self.open_file_to_handles.pop_from_row(filename)
if for_write and not is_open_for_write(handle.mode):
handle.close()
handle = open_sparse_file(filename, 'rb+', length=length)
#elif not for_write and is_open_for_write(handle.mode):
# handle.close()
# handle = open_sparse_file(filename, 'rb', length=length)
else:
if self.get_open_file_count() == self.max_files_open:
oldfname, oldhandle = self.open_file_to_handles.popitem()
oldhandle.close()
self._ensure_exists(filename, length)
if for_write:
handle = open_sparse_file(filename, 'rb+', length=length)
else:
handle = open_sparse_file(filename, 'rb', length=length)
self.active_file_to_handles.push_to_row(filename, handle)
return handle
def acquire_handle(self, filename, for_write, length=0):
# this will block until a new file handle can be made
self.free_handle_condition.acquire()
# abort disk ops on unregistered files
if filename not in self.file_to_torrent:
self.free_handle_condition.release()
return None
while self.active_file_to_handles.total_length() == self.max_files_open:
self.free_handle_condition.wait()
if filename in self.open_file_to_handles:
handle = self.open_file_to_handles.pop_from_row(filename)
if for_write and not is_open_for_write(handle.mode):
handle.close()
handle = open_sparse_file(filename, 'rb+', length=length)
#elif not for_write and is_open_for_write(handle.mode):
# handle.close()
# handle = open_sparse_file(filename, 'rb', length=length)
else:
if self.get_open_file_count() == self.max_files_open:
oldfname, oldhandle = self.open_file_to_handles.popitem()
oldhandle.close()
self._ensure_exists(filename, length)
if for_write:
handle = open_sparse_file(filename, 'rb+', length=length)
else:
handle = open_sparse_file(filename, 'rb', length=length)
self.active_file_to_handles.push_to_row(filename, handle)
self.free_handle_condition.release()
return handle
def acquire_handle(self, filename, for_write, length=0):
# this will block until a new file handle can be made
self.free_handle_condition.acquire()
if filename not in self.file_to_torrent:
self.free_handle_condition.release()
raise UnregisteredFileException()
while self.active_file_to_handles.total_length() == self.max_files_open:
self.free_handle_condition.wait()
if filename in self.open_file_to_handles:
handle = self.open_file_to_handles.pop_from_row(filename)
if for_write and not is_open_for_write(handle.mode):
handle.close()
handle = open_sparse_file(filename, 'rb+', length=length)
#elif not for_write and is_open_for_write(handle.mode):
# handle.close()
# handle = open_sparse_file(filename, 'rb', length=length)
else:
if self.get_open_file_count() == self.max_files_open:
oldfname, oldhandle = self.open_file_to_handles.popitem()
oldhandle.close()
self._ensure_exists(filename, length)
if for_write:
handle = open_sparse_file(filename, 'rb+', length=length)
else:
handle = open_sparse_file(filename, 'rb', length=length)
self.active_file_to_handles.push_to_row(filename, handle)
self.free_handle_condition.release()
return handle
def _produce_handle(self, df, filename, for_write, length):
if filename in self.open_file_to_handles:
handle = self.open_file_to_handles.pop_from_row(filename)
if for_write and not is_open_for_write(handle.mode):
handle.close()
handle = open_sparse_file(filename, 'rb+', length=length)
#elif not for_write and is_open_for_write(handle.mode):
# handle.close()
# handle = file(filename, 'rb', 0)
else:
if self.get_open_file_count() == self.max_files_open:
oldfname, oldhandle = self.open_file_to_handles.popitem()
oldhandle.close()
self._ensure_exists(filename, length)
if for_write:
handle = open_sparse_file(filename, 'rb+', length=length)
else:
handle = open_sparse_file(filename, 'rb', length=length)
self.active_file_to_handles.push_to_row(filename, handle)
df.callback(handle)
