[webkit-changes] cvs commit: JavaScriptCore/pcre pcre.h pcre_compile.c pcre_exec.c

Maciej Stachowiak mjs at apple.com
Sat Jan 7 20:34:15 PST 2006

On Jan 7, 2006, at 8:11 PM, Maciej Stachowiak wrote:

> On Jan 6, 2006, at 4:31 PM, Geoffrey Garen wrote:
>> We originally switched to the _r variants to prevent two localtime 
>> () calls in the same stack from stomping each other.  This method  
>> accomplishes that just as well.
>> For thread safety, we're counting on OS's to use thread-local- 
>> storage for globals.
> Nothing in this change will protect you from two threads that call  
> localtime at once. What does "thread-local storage for globals"  
> have to do with it? localtime is not required to use thread-local  
> storage for the struct tm it gives you a pointer to, and probably  
> doesn't on most platforms. This should be fixed.

I think we want this:

+struct tm *gmtime_r(time_t *_clock, struct tm *_result)
+    _gmtime64_s(_result, _clock);
+    return _result;
+struct tm *localtime_r(time_t *_clock, struct tm *_result)
+    _localtime64_s(_result, _clock);
+    return _result;

But I'm reluctant to try it without a win32 system to test on. (I'm  
not sure if we want the 64-bit versions of those _s functions or not  
but they do seem like the right thing for windows).


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