Not quite; they did the minimim amount for POSIX and X-Open, then added stuff for later iterations of their UNIX certification.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List <[email protected]> on behalf of Mike Schwab <[email protected]> Sent: Friday, October 2, 2020 11:54 AM To: [email protected] Subject: Re: usleep() I think IBM did the minimum amount of work to qualify for the U.S. Government requirement for POSIX at one point and has not kept it up to date. On Fri, Oct 2, 2020 at 10:24 AM Thomas David Rivers <[email protected]> wrote: > > Paul Gilmartin wrote: > > > > >> > >> > >What is IBM's rationale for supporting the deprecated usleep but not > >POSIX nanosleep on z/OS? > > > > https://secure-web.cisco.com/15ber4_2yl9qOXLoJC6r3enZh5QziAVC39L_snbERfZSOwZFHn-tPUvFtPPjNeP6J-fAnmc7zVBdb45A4VmZrFvek-ec24Rlfmw045YNkKgXTMLmr5bLh07-og-huGCRHRbDdSiEq0KHeu95pRw_Nk5k6VqEh7iFgeVdnMOVKrjkbH3X2-583UcfIup0vYE9qgWZznA0aqgyYuGxE76uNHIcgjLSDI-Sm_2ZyfY5JOwWKh2ZDZPgQxmhg6-zaXWWX0RjxdNgKR5XKOJV5_aNd-PF3vqd4TdiFW7wp6J-23m7-HOUy4XufdmPhSMiolqhEmRVWSjK6XgQnyO7etdCF72EngYc4lxoPDaR94QFZ0sGlyZgN6VtE_YQDiRyz7UHFStUPoXdhBLkZnSuA6tHxuIA22uSRaVO12GxNXZD-Z3hgI8X-842LAxp9Du7DCkQn/https%3A%2F%2Fpubs.opengroup.org%2Fonlinepubs%2F9699919799%2Ffunctions%2Fnanosleep.html#tag_16_350 > > > >And providing the idiosyncratic cond_timed_wait. > > > >-- gil > > > > > > > We added nanosleep() to the Dignus runtime library, and as IBM's > documentation > suggests, it uses the BPX cond_timed_wait function (there's a note there > saying you > can use BPX cond_timed_wait to implement nanosleep.) > > So - it would be pretty easy to add your own nanosleep if you want, just > call > cond_timed_wait as IBM says. > > nanosleep() is "newer" than the original POSIX-1, so I suppose until > some customer > submits an RFE for it it won't appear in the IBM C library. It's also > part of the REALTIME > section of POSIX, which IBM doesn't support. > > > > https://secure-web.cisco.com/1ta4flfdOYvdobDLBeabZZYwn_OUPyHpHl8NtZgg5L8XFEaQubjdtwe1iTgCUBB2pdY1dvJxnemRY9YA-pvr1EceoSF_itZ1yF2TyaMadI4ViFLY6qti_TQH1mfdxOvl_aL2Jknj2w5E1FM8C8fkjdPF-DmQG4ejsNjKuLjcGGz3wY3cclaWKw7bwGjN5t7CbJF9PXpj2KR82gutHMX7ljZQiBdssTeb4xSTdHM-iYpiDD3H5eXO5Yxs3J-KNztt8ofgaLN3dWzmcSrCd8cKsFVCYPd1aXrGBoFSscQZCUyZd91ZkuheKCZqqIqlveNAVgyht2UhSGdWWVEzFszXZkAROY77-kUYDoYQklmAJKyWZQ8OlDfz-L1wgiwn7JEFf5ZRxl819wrChSEpTZCyY70fRSbG_LHsSpOMvpFV8AtlAm6SUQlokHBao1SJeYY2y/https%3A%2F%2Fpubs.opengroup.org%2Fonlinepubs%2F009695399%2Ffunctions%2Fnanosleep.html > > z/OS doesn't really let you do the REALTIME timers (yet, I suppose), but > this function > is so handy and so common we added it to our runtime. > > And, in fact, our usleep() just invokes nanosleep() as is now common on > many implementations. > > > - Dave R. - > > -- > [email protected] Work: (919) 676-0847 > Get your mainframe programming tools at > http://secure-web.cisco.com/1okrNzXX_qhM0bnfpYvmM6qzMIRH75unmneSRpkqyhHLC0fQt7-7dhfy-KnIxZtJb7jteOx1US9bej8vB83gWy66ln-9Dx-PfWwpmjnHvqG6Okgf_7bDzYZwIi8M98Wpnh3h5xz1M5Y0_Msz7d56lpBKUx1jEomTwF0A_7YogAu_vvYEhwyCDYFMoKHN4G1jGW74SI0aKSfjm7bV-JMbQhiCHJmCKlVbPRTeNJ1TJM6a1y1NOmCbOEeil4I2Il1vkSa1-Y6avocBqnjcDYEOZpEt8Agy6rOjDMco3WHBS0euKVXcKdYH5In5UV_S9YB5PSDZ2YCbd3SN78JP2524RW_Sa3CV4DTl0Y9cDSV3r2yxD69yPkS67qhc0-x2aqATIoXPVZLDsBRXzByw7-NzrrSJ7iKWIFqDucONIdqwpqBzq7lmMEhMXlZVdT1ytY1cV/http%3A%2F%2Fwww.dignus.com > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN -- Mike A Schwab, Springfield IL USA Where do Forest Rangers go to get away from it all? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
