"Olson, Arthur David (NCI)" quoted:
-----Original Message----- From: Robert E. Brown [SMTP:brownb@jany.gs.com] Sent: Thursday, August 26, 1999 1:24 PM To: tz@elsie.nci.nih.gov Subject: timezone improvements
I work for a company that requires some capabilities beyond the standard time zone library. Here's the sort of thing we're interested in:
Ability to efficiently do time calculations in several time zones at the same time in separate threads. Time zone functions might take a zone as argument instead of the current method of setting the TZ environment variable and calling tzset to change zones, which involves file I/O.
Is there any prior art along these lines? I do see the routines whose names end with "_r". They seem to fix one glitch, but do not completely solve the problem.
In order to completely solve this problem (and a few others), I have taken the time to write up a proposal for a modernized date/time interface for the C language: http://www.cl.cam.ac.uk/~mgk25/c-time/ I hope you will find this proposal a useful reference, and I also would expect that it suits your needs nicely. If not, please explain why! There exist no implementation at this point yet. I would be delighted if you would pay someone to implement it (or part of it). My hope is that the ISO C committee will look at this issue one day, but the proposal came too late to still go into ISO C 9X. Markus -- Markus G. Kuhn, Computer Laboratory, University of Cambridge, UK Email: mkuhn at acm.org, WWW: <http://www.cl.cam.ac.uk/~mgk25/>