I'm using for the first time the postgres lock utilities, but brobably I'm doing something of not legal.
My action are:
void *Execute(void *pParam)
{
.......................................
.
........................................
string tableLock = "BEGIN WORK;";
tableLock.append(" LOCK TABLE ");
tableLock.append(actorTable);
tableLock.append(" IN ACCESS EXCLUSIVE MODE;");
&nbs
p;
res = PQexec(connection, tableLock.c_str());
........................................
........................................
pObj->ReturnNotification(static_cast<string>(notify->relname),connection)
;
.........................................
.........................................
CleanUpBeforeStop(void *pParam);
}
void CleanUpBeforeStop(void *pParam)
{
.........................................
.........................................
res = PQexec(pPti->conn, "COMMIT WORK;");
}
Well, the function Execute is the detached procedure of a thread. In here I execute the LOCK command on the table "actorTable". Then, in the method ReturnNotification I read the locked table. At last, calling the function CleanUpBeforeStop, I execute the COMMIT command.
Well, all this doesn't work (the connection is the always the same in all methods and functions). Have I to L
ock the
table, perform some operation on this table, and unlock the table all in the same function scope?
Any Idea?
Thanks in advance.
Luca
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