Hello soci development team,
first of all: thanks for this great peace of software!
I hope this is the right way to ask this question.
In my little multi-threaded server-software using soci as abstraction
layer for sqlite and/or postgres I am fighting a deadlock-scenario with
pooled sessions.
I wonder if there's a non-blocking way to get a pooled session (possibly
using try_lease()).
My next step would be to add another session constructor to session.cpp
like this:
--- snip ---
session::session(connection_pool & pool, int timeout)
{
if (pool.try_lease(poolPosition_, timeout))
{
session & pooledSession = pool.at(poolPosition_);
isFromPool_ = true;
pool_ = pool;
once.set_session(&pooledSession);
prepare.set_session(&pooledSession);
backEnd_ = pooledSession.get_backend();
}
else
{
once = this;
prepare = this;
logStream_ = NULL;
lastFactory_ = NULL;
uppercaseColumnNames_ = false;
backEnd_ = NULL;
isFromPool_ = false;
pool_ = NULL;
throw soci_error("No free pooled session in specified time.");
}
}
--- snap ---
but working on a fork is not my first choice.
So do you see a better solution, did I miss anything or is it a seldom
use-case ?
thanks for your help,
Andre
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