Change in ovirt-engine[master]: core: Fix double checking

[amureini at redhat.com]

Allon Mureinik has submitted this change and it was merged.

Change subject: core: Fix double checking
......................................................................


core: Fix double checking

These getInstance() methods implement a double-checking scheme to
initialize the instance static member.

In order for this mechanism to operate correctly, the instance member
should be defined as volatile (see, e.g.,
http://www.cs.umd.edu/~pugh/java/memoryModel/DoubleCheckedLocking.html).

Change-Id: I6beb664980766958b3127080fdb785c6e668f6a9
Signed-off-by: Allon Mureinik <amureini at redhat.com>
---
M backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/IsoDomainListSyncronizer.java
M backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/scheduling/SchedulingManager.java
2 files changed, 2 insertions(+), 2 deletions(-)

Approvals:
  Allon Mureinik: Verified; Looks good to me, approved



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Gerrit-MessageType: merged
Gerrit-Change-Id: I6beb664980766958b3127080fdb785c6e668f6a9
Gerrit-PatchSet: 4
Gerrit-Project: ovirt-engine
Gerrit-Branch: master
Gerrit-Owner: Allon Mureinik <amureini at redhat.com>
Gerrit-Reviewer: Alissa Bonas <abonas at redhat.com>
Gerrit-Reviewer: Allon Mureinik <amureini at redhat.com>
Gerrit-Reviewer: Daniel Erez <derez at redhat.com>
Gerrit-Reviewer: Itamar Heim <iheim at redhat.com>
Gerrit-Reviewer: Roy Golan <rgolan at redhat.com>
Gerrit-Reviewer: Tal Nisan <tnisan at redhat.com>
Gerrit-Reviewer: Yair Zaslavsky <yzaslavs at redhat.com>
Gerrit-Reviewer: oVirt Jenkins CI Server