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// $Id$
#include "ace/Monitor_Control/Solaris_Network_Interface_Monitor.h"
#if defined (ACE_HAS_KSTAT)
#include "ace/Log_Msg.h"
#include "ace/OS_NS_stdio.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
namespace ACE
{
namespace Monitor_Control
{
Solaris_Network_Interface_Monitor::Solaris_Network_Interface_Monitor (
const ACE_TCHAR *lookup_str)
: value_ (0UL),
start_ (0UL),
lookup_str_ (lookup_str)
{
this->init ();
}
void
Solaris_Network_Interface_Monitor::update_i (void)
{
this->access_kstats (this->value_);
this->value_ -= this->start_;
}
void
Solaris_Network_Interface_Monitor::clear_impl (void)
{
this->init ();
}
void
Solaris_Network_Interface_Monitor::init (void)
{
unsigned long i;
for (i = 0UL; i < MAX_LO_INTERFACES; ++i)
{
this->value_array_lo_[i] = 0UL;
}
for (i = 0UL; i < MAX_HME_INTERFACES; ++i)
{
this->value_array_hme_[i] = 0UL;
}
this->access_kstats (this->start_);
}
void
Solaris_Network_Interface_Monitor::access_kstats (
ACE_UINT64 &which_member)
{
this->kstats_ = kstat_open ();
if (this->kstats_ == 0)
{
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("opening kstats file failed\n")));
return;
}
this->kstat_id_ = this->kstats_->kc_chain_id;
int status = 0;
while (true)
{
/// We have to sum the network interfaces manually.
for (this->kstat_ = this->kstats_->kc_chain;
this->kstat_ != 0;
this->kstat_ = this->kstat_->ks_next)
{
if (ACE_OS::strcmp (this->kstat_->ks_class, "net") != 0)
{
continue;
}
unsigned long ks_instance = this->kstat_->ks_instance;
if (ACE_OS::strcmp (this->kstat_->ks_module, "lo") == 0)
{
/// Interfaces 'lo' have only packet counters.
if (this->lookup_str_ == ACE_TEXT ("obytes")
|| this->lookup_str_ == ACE_TEXT ("rbytes"))
{
continue;
}
status = this->check_ks_module (ks_instance,
MAX_LO_INTERFACES,
"MAX_LO_INTERFACES",
this->value_array_lo_,
which_member);
if (status == -1)
{
/// Unrecoverable error, diagnostic already output.
(void) kstat_close (this->kstats_);
return;
}
else if (status == 1)
{
/// The kstat_id changed underneath us, start over.
break;
}
}
else if (ACE_OS::strcmp (this->kstat_->ks_module, "hme") == 0
|| ACE_OS::strcmp (this->kstat_->ks_module, "bge") == 0)
{
status = this->check_ks_module (ks_instance,
MAX_HME_INTERFACES,
"MAX_HME_INTERFACES",
this->value_array_hme_,
which_member);
if (status == -1)
{
/// Unrecoverable error, diagnostic already output.
(void) kstat_close (this->kstats_);
return;
}
else if (status == 1)
{
/// The kstat_id changed underneath us, start over.
break;
}
}
}
if (this->kstat_)
{
this->kstat_id_ = kstat_chain_update (this->kstats_);
if (! this->kstat_id_ > 0)
{
ACE_ERROR ((LM_ERROR, "kstat is is not > 0.\n"));
break;
}
}
else
{
break;
}
}
status = kstat_close (this->kstats_);
if (status != 0)
{
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("closing kstats file failed\n")));
}
}
int
Solaris_Network_Interface_Monitor::check_ks_module (
const unsigned long ks_instance,
const unsigned long which_max,
const char *max_str,
ACE_UINT64 *value_array,
ACE_UINT64 &which_member)
{
if (! (ks_instance < which_max))
{
ACE_ERROR_RETURN ((LM_ERROR,
"%s exceeded.\n",
max_str),
-1);
}
/// Because the kstat chain can change dynamically,
/// watch the chain ID and restart the walk if the ID
/// differs from what we saw during the walk. The restart
/// is done by breaking from the cycle with kstat_ not 0.
kid_t kstat_id =
kstat_read (this->kstats_, this->kstat_, 0);
if (kstat_id != this->kstat_id_)
{
/// This return value restarts the walk as described above.
return 1;
}
kstat_named_t *value =
(kstat_named_t *) kstat_data_lookup (
this->kstat_,
ACE_TEXT_ALWAYS_CHAR (this->lookup_str_.rep ()));
if (value == 0)
{
/// Just return and let the calling FOR loop advance.
return 0;
}
if (value->data_type != KSTAT_DATA_UINT32)
{
ACE_ERROR_RETURN ((LM_ERROR,
"Wrong data type.\n"),
-1);
}
/// Guard against overflow.
value_array[ks_instance] +=
value->value.ui32
- static_cast<ACE_UINT32> (value_array[ks_instance]);
which_member += value_array[ks_instance];
return 0;
}
}
}
ACE_END_VERSIONED_NAMESPACE_DECL
#endif /* defined (ACE_HAS_KSTAT) */
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