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#!/usr/bin/env python
#
# Public Domain 2014-2019 MongoDB, Inc.
# Public Domain 2008-2014 WiredTiger, Inc.
#
# This is free and unencumbered software released into the public domain.
#
# Anyone is free to copy, modify, publish, use, compile, sell, or
# distribute this software, either in source code form or as a compiled
# binary, for any purpose, commercial or non-commercial, and by any
# means.
#
# In jurisdictions that recognize copyright laws, the author or authors
# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
# of the public at large and to the detriment of our heirs and
# successors. We intend this dedication to be an overt act of
# relinquishment in perpetuity of all present and future rights to this
# software under copyright law.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#
# test_cursor16.py
# Cursors: final close of cached cursors
#
import wttest
from wiredtiger import stat
class test_cursor16(wttest.WiredTigerTestCase):
tablename = 'test_cursor16'
uri_prefix = 'table:' + tablename
uri_count = 100
session_count = 100
conn_config = 'cache_cursors=true,statistics=(fast)'
# Returns the number of cursors cached
def cached_stats(self):
stat_cursor = self.session.open_cursor('statistics:', None, None)
cache = stat_cursor[stat.conn.cursor_cached_count][2]
stat_cursor.close()
return cache
def test_cursor16(self):
uris = []
cursors = []
#self.tty('begin cursors cached=' + str(self.cached_stats()))
for i in range(0, self.uri_count):
uri = self.uri_prefix + '-' + str(i)
uris.append(uri)
self.session.create(uri, 'key_format=S,value_format=S')
cursor = self.session.open_cursor(uri)
# We keep the cursors open in the main session, so there
# will always be a reference to their dhandle, and cached
# cursors won't get swept.
cursors.append(cursor)
for j in range(0, 10):
cursor[str(j)] = str(j)
self.assertEqual(0, self.cached_stats())
sessions = []
for i in range(0, self.session_count):
#if i % 10 == 0:
# self.tty('session count=%d cursors cached=%d' %
# (i, self.cached_stats()))
session = self.conn.open_session(self.session_config)
sessions.append(session)
for uri in uris:
cursor = session.open_cursor(uri)
# spot check, and leaves the cursor positioned
self.assertEqual(cursor['3'],'3')
cursor.close()
#self.tty('max cursors cached=' + str(self.cached_stats()))
i = 0
for session in sessions:
#if i % 10 == 0:
# self.tty('session count=%d cursors cached=%d' %
# (self.session_count - i, self.cached_stats()))
i += 1
session.close()
#self.tty('end cursors cached=' + str(self.cached_stats()))
self.assertEqual(0, self.cached_stats())
if __name__ == '__main__':
wttest.run()
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