File locking

[Michalis Kabrianis]

Geia sas. 
Mia erwtisi peri programming (nomizw aneksartita glwssas).

H function flock() parexei advisory lock enos arxeiou. Dystyxws den mporesa na
brw tropo na pw stin open() na elegxei gia kapoio lock (i stin remove()), ara
einai praktika axristo? (efoson advisory kai oxi ypoxrewtiko)

Endiaferomai na elegxw gia lock enos arxeiou, an den einai locked, na to
anoigw kai na to kanw lock, i na to sbinw (analoga me to stadio tou
programmatos).

2 Problimata:
a) Pws elegxw to lock prin anoiksw to arxeio
b) afou i open() kai i flock() einai diaforetikes functions, thewritika yparxei
i periptwsi meta tin open() kai print tin flock() na prospelasei kapoio allo
process to idio arxeio. Auto pws ksepernietai?

TIA
Michalis Kabrianis

P.S. H ylopoiisi tha einai se Perl, alla kai gia tin C den exw brei kati
paromoio.

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