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+#!/usr/bin/env python
+#
+# Public Domain 2014-2018 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()