Yes, it seems like a good idea to call tzset(), e.g. in some library 
function that is always called early at start-up.

/ Anders Widell

On 07/16/2014 03:57 PM, Alex Jones wrote:
> One comment.  From the man page of localtime_r:
>
> According  to POSIX.1-2004, localtime() is required to behave as though
>          tzset(3) was called, while localtime_r() does not  have this
> require-
>          ment.   For  portable  code  tzset(3)  should  be  called before
> local-
>          time_r().
>
> Do we need to do this?
>
> Alex
>
> On 07/16/2014 04:37 AM, mathi.naic...@oracle.com wrote:
>> Summary: replace localtime with thread safe localtime_r [#958]
>> Review request for Trac Ticket(s): #958
>> Peer Reviewer(s): ramesh, mahesh, hans, praveen, nagendra, alex
>> Pull request to: <<LIST THE PERSON WITH PUSH ACCESS HERE>>
>> Affected branch(es): 4.3.x, 4.4.x
>> Development branch: <<IF ANY GIVE THE REPO URL>>
>>
>> --------------------------------
>> Impacted area       Impact y/n
>> --------------------------------
>>    Docs                    n
>>    Build system            n
>>    RPM/packaging           n
>>    Configuration files     n
>>    Startup scripts         n
>>    SAF services            y
>>    OpenSAF services        y
>>    Core libraries          n
>>    Samples                 n
>>    Tests                   n
>>    Other                   n
>>
>>
>> Comments (indicate scope for each "y" above):
>> ---------------------------------------------
>> localtime is not thread safe and because of this, crashes have been
>> observed in multithreaded opensaf services (for eg:- a crash in SMFD
>> because logtrace uses localtime).
>> The patch series replaces all occurrences of localtime with localtime_r.
>>
>> changeset 8cbe68c97884d76c15e3e65c04c1e677402676c3
>> Author:      mathi.naic...@oracle.com
>> Date:        Wed, 16 Jul 2014 13:51:31 +0530
>>
>>      osaf: use thread safe localtime_r instead of localtime [#958] localtime 
>> is
>>      not thread safe and it can(has) cause crashes in services that are multi
>>      threaded.
>>
>> changeset 3123adbd8bd655db83216e17d33ee4ae034496f3
>> Author:      mathi.naic...@oracle.com
>> Date:        Wed, 16 Jul 2014 13:52:06 +0530
>>
>>      mds: use thread safe localtime_r instead of localtime [#958] localtime 
>> is
>>      not thread safe and it can(has) cause crashes in services that are multi
>>      threaded.
>>
>> changeset 80940ead9b9233e895a10992d45d7a1b37c2e791
>> Author:      mathi.naic...@oracle.com
>> Date:        Wed, 16 Jul 2014 13:55:09 +0530
>>
>>      amf: use thread safe localtime_r instead of localtime [#958] localtime 
>> is
>>      not thread safe and it can(has) cause crashes in services that are multi
>>      threaded.
>>
>> changeset 24833293883ba7c68b7fe1e303cadc05cf361e94
>> Author:      mathi.naic...@oracle.com
>> Date:        Wed, 16 Jul 2014 13:55:47 +0530
>>
>>      ntf: use thread safe localtime_r instead of localtime [#958] localtime 
>> is
>>      not thread safe and it can(has) cause crashes in services that are multi
>>      threaded.
>>
>> changeset facf9779833cecd83118a88527e60d235f6af6c8
>> Author:      mathi.naic...@oracle.com
>> Date:        Wed, 16 Jul 2014 13:57:46 +0530
>>
>>      plm: use thread safe localtime_r instead of localtime [#958] localtime 
>> is
>>      not thread safe and it can(has) cause crashes in services that are multi
>>      threaded.
>>
>>
>> Complete diffstat:
>> ------------------
>>    osaf/libs/core/common/include/logtrace.h      |  2 +-
>>    osaf/libs/core/common/logtrace.c              |  6 +++++-
>>    osaf/libs/core/mds/mds_log.c                  |  6 +++++-
>>    osaf/services/saf/amf/amfwdog/amf_wdog.c      |  6 +++++-
>>    osaf/services/saf/ntfsv/ntfs/ntfs_evt.c       |  6 +++++-
>>    osaf/services/saf/plmsv/plms/plms_dbg_utils.c |  6 +++++-
>>    osaf/tools/safntf/src/ntfclient.c             |  6 +++++-
>>    7 files changed, 31 insertions(+), 7 deletions(-)
>>
>>
>> Testing Commands:
>> -----------------
>> Start opensaf, observe timestamp wherever(flows) applicable.
>>
>> Testing, Expected Results:
>> --------------------------
>> Start opensaf, observe timestamp wherever applicable.
>>
>>
>> Conditions of Submission:
>> -------------------------
>> Ack from Reviewers.
>>
>> Arch      Built     Started    Linux distro
>> -------------------------------------------
>> mips        n          n
>> mips64      n          n
>> x86         n          n
>> x86_64      y          y
>> powerpc     n          n
>> powerpc64   n          n
>>
>>
>> Reviewer Checklist:
>> -------------------
>> [Submitters: make sure that your review doesn't trigger any checkmarks!]
>>
>>
>> Your checkin has not passed review because (see checked entries):
>>
>> ___ Your RR template is generally incomplete; it has too many blank entries
>>       that need proper data filled in.
>>
>> ___ You have failed to nominate the proper persons for review and push.
>>
>> ___ Your patches do not have proper short+long header
>>
>> ___ You have grammar/spelling in your header that is unacceptable.
>>
>> ___ You have exceeded a sensible line length in your headers/comments/text.
>>
>> ___ You have failed to put in a proper Trac Ticket # into your commits.
>>
>> ___ You have incorrectly put/left internal data in your comments/files
>>       (i.e. internal bug tracking tool IDs, product names etc)
>>
>> ___ You have not given any evidence of testing beyond basic build tests.
>>       Demonstrate some level of runtime or other sanity testing.
>>
>> ___ You have ^M present in some of your files. These have to be removed.
>>
>> ___ You have needlessly changed whitespace or added whitespace crimes
>>       like trailing spaces, or spaces before tabs.
>>
>> ___ You have mixed real technical changes with whitespace and other
>>       cosmetic code cleanup changes. These have to be separate commits.
>>
>> ___ You need to refactor your submission into logical chunks; there is
>>       too much content into a single commit.
>>
>> ___ You have extraneous garbage in your review (merge commits etc)
>>
>> ___ You have giant attachments which should never have been sent;
>>       Instead you should place your content in a public tree to be pulled.
>>
>> ___ You have too many commits attached to an e-mail; resend as threaded
>>       commits, or place in a public tree for a pull.
>>
>> ___ You have resent this content multiple times without a clear indication
>>       of what has changed between each re-send.
>>
>> ___ You have failed to adequately and individually address all of the
>>       comments and change requests that were proposed in the initial review.
>>
>> ___ You have a misconfigured ~/.hgrc file (i.e. username, email etc)
>>
>> ___ Your computer have a badly configured date and time; confusing the
>>       the threaded patch review.
>>
>> ___ Your changes affect IPC mechanism, and you don't present any results
>>       for in-service upgradability test.
>>
>> ___ Your changes affect user manual and documentation, your patch series
>>       do not contain the patch that updates the Doxygen manual.
>>
>
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