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//
// $Id$
//
#include "RMCast_Membership.h"
#if !defined (__ACE_INLINE__)
# include "RMCast_Membership.i"
#endif /* ! __ACE_INLINE__ */
#include "RMCast_Proxy.h"
#include "ace/Guard_T.h"
ACE_RCSID(RMCast, RMCast_Membership, "$Id$")
ACE_RMCast_Membership::~ACE_RMCast_Membership (void)
{
}
int
ACE_RMCast_Membership::has_members (void)
{
ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->mutex_, -1);
Proxy_Iterator end = this->proxies_.end ();
Proxy_Iterator i = this->proxies_.begin ();
return (i != end);
}
int
ACE_RMCast_Membership::ack (ACE_RMCast::Ack &ack)
{
//ACE_DEBUG ((LM_DEBUG, "ACE_RMCast_Membership::ack (%d:%d)\n",
// ack.next_expected, ack.highest_received));
ACE_RMCast::Ack next_ack;
{
ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->mutex_, -1);
if (ack.next_expected < this->next_expected_)
{
// @@ This violates an invariant of the class, shouldn't
// happen...
//ACE_DEBUG ((LM_DEBUG, "ACE_RMCast_Membership::ack[2]\n"));
return 0;
}
else if (ack.next_expected == this->next_expected_)
{
// Nothing new, just continue....
//ACE_DEBUG ((LM_DEBUG, "ACE_RMCast_Membership::ack[3]\n"));
return 0;
}
int r = this->compute_ack_i (ack.source, next_ack);
if (r < 0)
return r;
if (r == 1)
return 0;
}
//ACE_DEBUG ((LM_DEBUG, "ACE_RMCast_Membership::ack[4] (%d:%d)\n",
// next_ack.next_expected, next_ack.highest_received));
return this->ACE_RMCast_Module::ack (next_ack);
}
int
ACE_RMCast_Membership::join (ACE_RMCast::Join &join)
{
if (join.source == 0)
return 0;
{
// ACE_DEBUG ((LM_DEBUG,
// "RMCast_Membership::join - %d\n",
// long(join.source)));
ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->mutex_, -1);
if (this->proxies_.insert (join.source) == -1)
return -1;
}
(void) this->generate_ack (join.source);
return this->ACE_RMCast_Module::join (join);
}
int
ACE_RMCast_Membership::leave (ACE_RMCast::Leave &leave)
{
if (leave.source == 0)
return 0;
{
ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->mutex_, -1);
(void) this->proxies_.remove (leave.source);
}
(void) this->generate_ack (leave.source);
return this->ACE_RMCast_Module::leave (leave);
}
int
ACE_RMCast_Membership::generate_ack (ACE_RMCast_Proxy *proxy)
{
ACE_RMCast::Ack next_ack;
{
ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, ace_mon, this->mutex_, -1);
int r = this->compute_ack_i (proxy, next_ack);
if (r < 0)
return r;
if (r == 1)
return 0;
}
//ACE_DEBUG ((LM_DEBUG, "ACE_RMCast_Membership::ack[6] (%d:%d)\n",
// next_ack.next_expected, next_ack.highest_received));
return this->ACE_RMCast_Module::ack (next_ack);
}
int
ACE_RMCast_Membership::compute_ack_i (ACE_RMCast_Proxy *source,
ACE_RMCast::Ack &next_ack)
{
Proxy_Iterator end = this->proxies_.end ();
Proxy_Iterator i = this->proxies_.begin ();
if (i == end)
return 1;
//ACE_DEBUG ((LM_DEBUG,
// "RMCast_Membership::generate_ack[1] - %d -> (%d:%d)\n",
// long(*i),
// (*i)->next_expected (),
// (*i)->highest_received ()));
ACE_UINT32 next_expected = (*i)->next_expected ();
ACE_UINT32 highest_received = (*i)->highest_received ();
++i;
for (; i != end; ++i)
{
// ACE_DEBUG ((LM_DEBUG,
// "RMCast_Membership::generate_ack[2] - %d -> (%d:%d)\n",
// long(*i),
// (*i)->next_expected (),
// (*i)->highest_received ()));
ACE_UINT32 s = (*i)->next_expected ();
if (s < next_expected)
next_expected = s;
ACE_UINT32 r = (*i)->highest_received ();
if (r > highest_received)
highest_received = r;
}
#if 0
// @@TODO: this is an important feature, disabled until it is
// fully debugged
if (this->next_expected_ >= next_expected
|| this->highest_received_ >= highest_received)
{
// No change....
ACE_DEBUG ((LM_DEBUG,
"RMCast_Membership::generate_ack[3]\n"));
return 1;
}
#endif /* 0 */
this->next_expected_ = next_expected;
this->highest_received_ = highest_received;
next_ack.source = source;
next_ack.next_expected = this->next_expected_;
next_ack.highest_received = this->highest_received_;
//ACE_DEBUG ((LM_DEBUG,
// "RMCast_Membership::generate_ack[4] - (%d:%d)\n",
// next_ack.next_expected,
// next_ack.highest_received));
return 0;
}
#if defined (ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION)
template class ACE_Unbounded_Set<ACE_RMCast_Proxy*>;
template class ACE_Unbounded_Set_Iterator<ACE_RMCast_Proxy*>;
template class ACE_Node<ACE_RMCast_Proxy*>;
#endif /* ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION */
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