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List:       opensolaris-code
Subject:    [osol-code] setting process priority with nice() command
From:       "Alex B." <box2go () gmail ! com>
Date:       2011-03-07 4:09:30
Message-ID: 152768880.401299499808466.JavaMail.Twebapp () sf-app1
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Hello,

It's necessary for me to change the priority of my application's process from the \
code. I try to use the nice() function to set the priority and priocntl() to read the \
current process' priority, but I get priority=0 before the nice() and priority=19 \
after the nice() without respect to the argument I pass to nice().  What do I do \
wrong? 

int GetPriority(void) 
{ 
pcnice_t niceSet; 
int rc; 

niceSet.pc_op = PC_GETNICE; 
if(-1 == priocntl(P_PID, getpid(), PC_DONICE, &niceSet)) 
rc = -1; 
else 
rc = niceSet.pc_val; 

return rc; 
} 

int main() 
{ 
int newPriority, currentPriority; 

newPriority = 27; 

currentPriority = GetPriority(); 
printf("default priority = %d\n", currentPriority); 

nice(newPriority); 

currentPriority = GetPriority(); 
printf("new priority = %d\n", currentPriority); 

return 0; 
}
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