Re: [Mingw-users] Porting localtime_r and gmtime_r

[JonY <10walls@xxxxxxxxx>]

Greg Chicares wrote:
> On 2008-02-05 02:23Z, JonY wrote:
>> I am new to porting Unix applications and have little experience with C. 
>> The localtime_r and gmtime_r implementation with basic error checking 
>> are based on the following sources:
>>
>> http://www.opengroup.org/onlinepubs/009695399/functions/localtime.html
>> http://www.opengroup.org/onlinepubs/009695399/functions/gmtime.html
>> http://mail-archives.apache.org/mod_mbox/httpd-cvs/199910.mbox/%3C19991006064852.5464.qmail@xxxxxxxxxxxxx%3E
> 
> [snip code]
> 
> At a quick glance, it looks like you didn't do the locking that
> apache added to make it thread-safe. Was that a conscious choice,
> because msdn says these functions maintain a single 'tm' struct
> per thread, at least for this version:
>   http://msdn2.microsoft.com/en-us/library/bf12f0hc(VS.80).aspx
> of the runtime? (I didn't try to find what the msvc runtime
> normally used by MinGW does.)
> 
MinGW uses msvcrt.dll (msvc 6) by default. I don't know how to do thread 
locking yet :(

http://sources.redhat.com/ml/pthreads-win32/2005/msg00011.html
suggest localtime its thread safe too.

Thanks everyone.

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