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Top Forums Programming reg adding Users into at.allow and removing from at.allow Post 302113790 by naren_chella on Tuesday 10th of April 2007 08:40:20 AM
Old 04-10-2007
Many Thanks Blowtorch for your answer .

But here i cannot solve concurrency issues , multiple users accessing the same file.
two people using at.allow may cause incosistent at.allow file .

so i have to locak it before i update it .

any information reg the same a C program to lock , remove and unlock the at.allow so that we can avoid concurrency issues .

many thanks
Narendra
 

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thr_getconcurrency(3C)					   Standard C Library Functions 				    thr_getconcurrency(3C)

NAME
thr_getconcurrency, thr_setconcurrency - get or set thread concurrency level SYNOPSIS
cc -mt [ flag... ] file...[ library... ] #include <thread.h> int thr_setconcurrency(int new_level); int thr_getconcurrency(void); DESCRIPTION
These functions are obsolete and maintained for compatibility only. The thr_setconcurrency() function updates the desired concurrency level that libthread maintains for the calling process. This value does not affect the behavior of the calling process. The thr_getconcurrency() function returns the current value for the desired concurrency level. RETURN VALUES
The thr_getconcurrency() function always returns the current value for the desired concurrency level. If successful, the thr_setconcurrency() function returns 0. Otherwise, a non-zero value is returned to indicate the error. ERRORS
The thr_setconcurrency() function will fail if: EAGAIN The specified concurrency level would cause a system resource to be exceeded. EINVAL The value for new_level is negative. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
thr_create(3C), attributes(5), standards(5) SunOS 5.10 11 May 1998 thr_getconcurrency(3C)
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