From: EXT Ola Liljedahl [mailto:ola.liljed...@linaro.org] Sent: Thursday, December 10, 2015 12:40 PM To: Savolainen, Petri (Nokia - FI/Espoo) Cc: Bill Fischofer; LNG ODP Mailman List Subject: Re: [lng-odp] [API-NEXT PATCH] linux-generic: time: remove posix bleed through on odp_time_t
On 10 December 2015 at 09:30, Savolainen, Petri (Nokia - FI/Espoo) <petri.savolai...@nokia.com<mailto:petri.savolai...@nokia.com>> wrote: From: lng-odp [mailto:lng-odp-boun...@lists.linaro.org<mailto:lng-odp-boun...@lists.linaro.org>] On Behalf Of EXT Ola Liljedahl Sent: Wednesday, December 09, 2015 6:26 PM To: Bill Fischofer Cc: LNG ODP Mailman List Subject: Re: [lng-odp] [API-NEXT PATCH] linux-generic: time: remove posix bleed through on odp_time_t On 9 December 2015 at 16:53, Bill Fischofer <bill.fischo...@linaro.org<mailto:bill.fischo...@linaro.org>> wrote: The linux-generic implementation of odp_time_t makes use of POSIX APIs that are sensitive to the _POSIX_C_SOURCE level. Use an indirection mechanism so that these dependencies do not "bleed through" the ODP API. This means that ODP applications can be independent of _POSIX_C_SOURCE level. Yes this is the way it should be done. This is also another step in the ODP API becoming binary portable and run-time independent of the actual implementation. This definition is still platform (linux-generic) specific. It just redefines timespec struct, so that original timespec and thus posix level is not visible to application. For now it is platform specific but now when we have a definition which is decoupled from the underlying implementation, we can promote this to become the binary interface for all ODP implementations. I didn't say we are there yet. It’s another exercise to define every handle and other platform specific types for a binary compatibility mode (e.g. for ARMv8). We could define odp_time_t (in binary compatibility mode) as plain “uint64_t nsec”. It’s large enough for >500 years. -Petri
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