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https://issues.apache.org/jira/browse/GEODE-2494?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15886168#comment-15886168
 ] 

ASF GitHub Bot commented on GEODE-2494:
---------------------------------------

Github user dgkimura commented on a diff in the pull request:

    https://github.com/apache/geode-native/pull/36#discussion_r103252234
  
    --- Diff: src/cppcache/src/MapSegment.hpp ---
    @@ -164,9 +166,9 @@ class CPPCACHE_EXPORT MapSegment {
         m_entryFactory->newMapEntry(key, newEntry);
         newEntry->setValueI(newValue);
         if (m_concurrencyChecksEnabled) {
    -      if (versionTag != NULLPTR && versionTag.ptr() != NULL) {
    +      if (versionTag != NULLPTR && versionTag.ptr() != nullptr) {
    --- End diff --
    
    Any reason that we have to continue to keep `NULLPTR`?  Else it gets a 
little confusing with C++11 keyword `nullptr`.


> Replace SpinLock class with C++11 style BasicLockable class, spinlock_mutex.
> ----------------------------------------------------------------------------
>
>                 Key: GEODE-2494
>                 URL: https://issues.apache.org/jira/browse/GEODE-2494
>             Project: Geode
>          Issue Type: Sub-task
>          Components: native client
>            Reporter: Jacob S. Barrett
>            Assignee: Jacob S. Barrett
>
> Replace {{SpinLock}} class with C++11 style 
> {{[BasicLockable|http://en.cppreference.com/w/cpp/concept/BasicLockable]}} 
> class, {{spinlock_mutex}}. You can find several public domain examples of how 
> to implement a {{spinlock_mutex}} that can be used with 
> {{[std::lock_guard|http://en.cppreference.com/w/cpp/thread/lock_guard]}}.



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