impala-reviews mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Tim Armstrong (Code Review)" <ger...@cloudera.org>
Subject [Impala-ASF-CR] IMPALA-4752: make ObjectPool more efficient
Date Wed, 11 Jan 2017 19:56:31 GMT
Tim Armstrong has uploaded a new patch set (#2).

Change subject: IMPALA-4752: make ObjectPool more efficient
......................................................................

IMPALA-4752: make ObjectPool more efficient

Previously it was implemented as a vector of pointers to
dynamically allocated wrapper objects, where each wrapper object
stored a pointer to the object and a pointer to a vtable, which
had a pointer to a destructor, which then calls the actual
object's destructor.

Instead of doing this, this patch changes ObjectPool to stores
the object pointer and function pointer inline in the vector.
This avoids an unnecessary malloc() and free() pair per object.

Testing:
Ran core tests, which should exercise this heavily during query
execution.

Change-Id: I1e6a40ac798fa64da4767f530c48710cba623ea5
---
M be/src/common/object-pool.h
1 file changed, 15 insertions(+), 25 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/66/5666/2
-- 
To view, visit http://gerrit.cloudera.org:8080/5666
To unsubscribe, visit http://gerrit.cloudera.org:8080/settings

Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I1e6a40ac798fa64da4767f530c48710cba623ea5
Gerrit-PatchSet: 2
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Tim Armstrong <tarmstrong@cloudera.com>
Gerrit-Reviewer: Thomas Tauber-Marshall <tmarshall@cloudera.com>

Mime
View raw message