GitHub user hbdeshmukh opened a pull request:
https://github.com/apache/incubator-quickstep/pull/120
Store handle count in FastSeparateChainingHashTable
- Using handles_ vector directly in FastSeparateChainingHashTable can
cause problems. One example is a distinctify hash table which doesn't
accept any payload. In this case, the reference to handles_ vector
becomes garbage after the constructor gets executed. Therefore to
avoid faults about accessing an invalid reference, we use the number
of handles as a guarding mechanism.
- Verified by reducing the hash table size artificially, so as to forcing a
``resize()`` operation. The ``destroyPayload()`` function gets called in
``resize()``. The fix in this PR fixes the behavior of ``destroyPayload``
function.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/apache/incubator-quickstep
fix-emptypayload-fastsephashtable
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-quickstep/pull/120.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #120
----
commit 9c32ea45c5971568fae3d611a0fc9d963d7501bf
Author: Harshad Deshmukh <hbdeshm...@apache.org>
Date: 2016-10-21T21:15:53Z
Remember handle count in FastSeparateChainingHashTable
- Using handles_ vector directly in FastSeparateChainingHashTable can
cause problems. One example is a distinctify hash table which doesn't
accept any payload. In this case, the reference to handles_ vector
becomes garbage after the constructor gets executed. Therefore to
avoid faults about accessing an invalid reference, we use the number
of handles as a guarding mechanism.
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