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// file : ace/RMCast/Acknowledge.h
// author : Boris Kolpackov <boris@kolpackov.net>
// cvs-id : $Id$
#ifndef ACE_RMCAST_ACKNOWLEDGE_H
#define ACE_RMCAST_ACKNOWLEDGE_H
#include <ace/Hash_Map_Manager.h>
#include <ace/Thread_Manager.h>
#include <ace/RMCast/Stack.h>
#include <ace/RMCast/Protocol.h>
#include <ace/RMCast/Bits.h>
namespace ACE_RMCast
{
class Acknowledge : public Element
{
public:
Acknowledge ();
virtual void
in_start (In_Element* in);
virtual void
out_start (Out_Element* out);
virtual void
out_stop ();
public:
virtual void
recv (Message_ptr m);
virtual void
send (Message_ptr m);
private:
struct Descr
{
//@@ There should be no default c-tor.
//
Descr ()
: nak_count_ (0), timer_ (1)
{
}
Descr (unsigned long timer)
: nak_count_ (0), timer_ (timer)
{
}
Descr (Message_ptr m)
: m_ (m)
{
}
public:
bool
lost () const
{
return m_.get () == 0;
}
public:
Message_ptr
msg ()
{
return m_;
}
void
msg (Message_ptr m)
{
m_ = m;
}
public:
unsigned long
nak_count () const
{
return nak_count_;
}
void
nak_count (unsigned long v)
{
nak_count_ = v;
}
unsigned long
timer () const
{
return timer_;
}
void
timer (unsigned long v)
{
timer_ = v;
}
private:
Message_ptr m_;
unsigned long nak_count_;
unsigned long timer_;
};
struct Queue : ACE_Hash_Map_Manager<u64, Descr, ACE_Null_Mutex>
{
typedef ACE_Hash_Map_Manager<u64, Descr, ACE_Null_Mutex> Base;
// Should never be here but required by ACE_Hash_Blah_Blah.
//
Queue ()
: Base (), sn_ (0), max_sn_ (0)
{
}
Queue (u64 sn)
: Base (), sn_ (sn), max_sn_ (sn)
{
}
Queue (Queue const& q)
: Base (), sn_ (q.sn_), max_sn_ (sn_)
{
for (Queue::const_iterator i (q), e (q, 1); i != e; ++i)
{
bind ((*i).ext_id_, (*i).int_id_);
}
}
public:
int
bind (u64 sn, Descr const& d)
{
int r (Base::bind (sn, d));
if (r == 0 && sn > max_sn_) max_sn_ = sn;
return r;
}
int
rebind (u64 sn, Descr const& d)
{
int r (Base::rebind (sn, d));
if (r == 0 && sn > max_sn_) max_sn_ = sn;
return r;
}
int
unbind (u64 sn)
{
int r (Base::unbind (sn));
if (r == 0 && sn == max_sn_)
{
for (--max_sn_; max_sn_ >= sn_; --max_sn_)
{
if (find (max_sn_) == 0) break;
}
}
return r;
}
public:
u64
sn () const
{
return sn_;
}
void
sn (u64 sn)
{
sn_ = sn;
}
u64
max_sn () const
{
if (current_size () == 0) return sn_;
return max_sn_;
}
private:
u64 sn_, max_sn_;
};
typedef
ACE_Hash_Map_Manager_Ex<Address,
Queue,
AddressHasher,
ACE_Equal_To<Address>,
ACE_Null_Mutex>
Map;
private:
void
collapse (Queue& q);
void
track ();
void
track_queue (Address const& addr, Queue& q, Messages& msgs);
Profile_ptr
create_nrtm ();
static ACE_THR_FUNC_RETURN
track_thunk (void* obj);
private:
Map hold_;
Mutex mutex_;
unsigned long nrtm_timer_;
ACE_Thread_Manager tracker_mgr_;
};
}
#endif // ACE_RMCAST_ACKNOWLEDGE_H
|
