Help..Am New to UNix


 
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Old 06-21-2009
Question Help..Am New to UNix

hey all!!
i m new to unix. I got a ques in assignment nd m nt able to find an appropriate answer for this ques. can u plz help me to find the answer. the ques is :

what should happen if the kernel attempts to awake all process sleeping on a event and there is no process asleep at that time?

My logical thinking says nothing should happen!! Smilie
 
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UPSCLI_LIST_NEXT(3)						    NUT Manual						       UPSCLI_LIST_NEXT(3)

NAME
upscli_list_next - retrieve list items from a UPS SYNOPSIS
#include <upsclient.h> int upscli_list_next(UPSCONN_t *ups, int numq, const char **query, int *numa, char ***answer) DESCRIPTION
The upscli_list_next() function takes the pointer ups to a UPSCONN_t state structure, and the pointer query to an array of numq query elements. It performs a read from the network and expects to find either another list item or the end of a list. You must call upscli_list_start(3) before calling this function. This function will return 1 and set values in numa and answer if a list item is received. If the list is done, it will return 0, and the values in numa and answer are undefined. Calling this function after it returns something other than 1 is undefined. QUERY FORMATTING
You may not change the values of numq or query between the call to upscli_list_start(3) and the first call to this function. You also may not change the values between calls to this function. ANSWER FORMATTING
The contents of numa and answer work just like a call to upscli_get(3). The values returned by upsd(8) are identical to a single item request, so this is not surprising. ERROR CHECKING
This function checks the response from upsd(8) against your query. If the response is not part of the list you have requested, it will return an error code. When this happens, upscli_upserror(3) will return UPSCLI_ERR_PROTOCOL. RETURN VALUE
The upscli_list_next() function returns 1 when list data is present, 0 if the list is finished, or -1 if an error occurs. It is possible to have an empty list. The function will return 0 for its first call in that case. SEE ALSO
upscli_list_start(3), upscli_strerror(3), upscli_upserror(3) Network UPS Tools 05/22/2012 UPSCLI_LIST_NEXT(3)