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what is the main difference between difference between using nonatomic lseek and O_APPEND
Post 302715081 by fwrlfo on Saturday 13th of October 2012 06:16:33 PM
10-13-2012
what is the main difference between difference between using nonatomic lseek and O_APPEND
I think both write at the end of the file ......
but is there a sharp difference between those 2 instruction .....
thank you
this is my 3rd question today forgive me
but is there a sharp difference between those 2 instruction .....
thank you
this is my 3rd question today forgive me
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LEARN ABOUT SUNOS
cpc_event_accum
cpc_event_diff(3CPC) cpc_event_diff(3CPC) NAME
cpc_event_diff, cpc_event_accum - simple difference and accumulate operations SYNOPSIS
cc [ flag... ] file... -lcpc [ library... ] #include <libcpc.h> void cpc_event_accum(cpc_event_t *accum, cpc_event_t *event); void cpc_event_diff(cpc_event_t *diff, cpc_event_t *after, cpc_event_t *before); The cpc_event_accum() and cpc_event_diff() functions perform common accumulate and difference operations on cpc_event(3CPC) data struc- tures. Use of these functions increases program portability, since structure members are not referenced directly . cpc_event_accum() The cpc_event_accum() function adds the ce_pic fields of event into the corresponding fields of accum. The ce_hrt field of accum is set to the later of the times in event and accum. SPARC: The function adds the contents of the ce_tick field of event into the corresponding field of accum. : The function adds the contents of the ce_tsc field of event into the corresponding field of accum. cpc_event_diff() The cpc_event_diff() function places the difference between the ce_pic fields of after and before and places them in the corresponding field of diff. The ce_hrt field of diff is set to the ce_hrt field of after. SPARC: Additionally, the function computes the difference between the ce_tick fields of after and before, and places it in the corresponding field of diff. : Additionally, the function computes the difference between the ce_tsc fields of after and before, and places it in the corresponding field of diff. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Obsolete | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ cpc(3CPC), cpc_buf_add(3CPC), cpc_buf_sub(3CPC), cpc_event(3CPC), libcpc(3LIB), attributes(5) The cpc_event_accum() and cpc_event_diff() functions exist for binary compatibility only. Source containing these functions will not com- pile. These functions are obsolete and might be removed in a future release. Applications should use cpc_buf_add(3CPC) and cpc_buf_sub(3CPC) instead. 28 Mar 2005 cpc_event_diff(3CPC)