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design for lock -1

 
Reshma Das
Ranch Hand
Posts: 125
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did someone implemented lock(-1)? i think this is useful for local client. but iam confused with its implementation. can someone help me?
my logic:
client :
if(local)
data.bookseats(fltno, seat,-1);
else
data.bookseats(fltno,seat);
server:
ignore -1
lock(recnum)
data.bookseat(recnum,seat);
unlock(recnum);
data:
if (recnum == -1)
lock entire file
bookseat(recnum,seat)
unlock(-1)
what do u guys feel about it.
Thanks.
 
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