#!/usr/bin/env python
#
# Public Domain 2014-2018 MongoDB, Inc.
# Public Domain 2008-2014 WiredTiger, Inc.
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# test_hazard.py
#       Hazard pointer tests.

import wiredtiger, wttest
from wtdataset import SimpleDataSet

# Regression tests.
class test_hazard(wttest.WiredTigerTestCase):

    # Allocate a large number of hazard pointers in a session, forcing the
    # hazard pointer array to repeatedly grow.
    def test_hazard(self):
        uri = "table:hazard"
        ds = SimpleDataSet(self, uri, 1000)
        ds.populate()

        # Open 10,000 cursors and pin a page to set a hazard pointer.
        cursors = []
        for i in range(0, 10000):
            c = self.session.open_cursor(uri, None)
            c.set_key(ds.key(10))
            c.search()
            cursors.append(c)

        # Close the cursors, clearing the hazard pointer.
        for c in cursors:
            c.close()

if __name__ == '__main__':
    wttest.run()
