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// @(#) $Id$
#include "RT_Servant_Dispatcher.h"
#include "RT_POA.h"
#include "tao/RTCORBA/Thread_Pool.h"
#include "tao/ORB_Core.h"
#include "tao/TAO_Server_Request.h"
#include "tao/Service_Context.h"
#include "tao/debug.h"
ACE_RCSID(tao, Default_Acceptor_Filter, "$Id$")
RT_Priority_Model_Processing::RT_Priority_Model_Processing (TAO_POA &poa,
CORBA::Short servant_priority)
: state_ (NO_ACTION_REQUIRED),
poa_ (poa),
servant_priority_ (servant_priority),
original_priority_ (TAO_INVALID_PRIORITY)
{
}
RT_Priority_Model_Processing::~RT_Priority_Model_Processing (void)
{
if (this->state_ == PRIORITY_RESET_REQUIRED)
{
ACE_DECLARE_NEW_CORBA_ENV;
ACE_TRY
{
this->post_invoke (ACE_TRY_ENV);
ACE_TRY_CHECK;
}
ACE_CATCHANY
{
// Eat up the exception.
ACE_PRINT_EXCEPTION (ACE_ANY_EXCEPTION,
"Exception caught: TAO (%P|%t) - Priority_Model_Processing::~Priority_Model_Processing");
}
ACE_ENDTRY;
}
}
void
RT_Priority_Model_Processing::pre_invoke (
TAO_Service_Context &request_service_context,
TAO_Service_Context &reply_service_context,
CORBA::Environment &ACE_TRY_ENV)
{
TAO_Thread_Pool *thread_pool =
(TAO_Thread_Pool *) this->poa_.thread_pool ();
if (thread_pool != 0 &&
thread_pool->with_lanes ())
{
// We don't mess with the priority of threads in lanes.
if (TAO_debug_level > 0)
{
// Get the ORB_Core's TSS resources.
TAO_ORB_Core_TSS_Resources *tss =
this->poa_.orb_core ().get_tss_resources ();
/// Get the lane attribute in TSS.
TAO_Thread_Lane *lane =
(TAO_Thread_Lane *) tss->lane_;
ACE_ASSERT (lane->pool ().id () ==
thread_pool->id ());
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("Using thread pool with lane ")
ACE_TEXT ("(%P|%t|%d|%d): original thread priority not changed\n"),
lane->pool ().id (),
lane->id ()));
}
return;
}
// Remember current thread's priority.
TAO_Protocols_Hooks *tph =
this->poa_.orb_core ().get_protocols_hooks (ACE_TRY_ENV);
ACE_CHECK;
if (tph->get_thread_priority (this->original_priority_,
ACE_TRY_ENV)
== -1)
ACE_THROW (CORBA::DATA_CONVERSION (1,
CORBA::COMPLETED_NO));
int client_propagated = 0;
RTCORBA::Priority target_priority = TAO_INVALID_PRIORITY;
TAO_POA_Cached_Policies &cached_policies =
this->poa_.cached_policies ();
// CLIENT_PROPAGATED PriorityModel processing.
if (cached_policies.priority_model () ==
TAO_POA_Cached_Policies::CLIENT_PROPAGATED)
{
client_propagated = 1;
// Attempt to extract client-propagated priority from the
// ServiceContextList of the request.
const IOP::ServiceContext *context;
if (request_service_context.get_context (IOP::RTCorbaPriority,
&context) == 1)
{
// Extract the target priority
TAO_InputCDR cdr (ACE_reinterpret_cast
(const char*,
context->context_data.get_buffer ()),
context->context_data.length ());
CORBA::Boolean byte_order;
if ((cdr >> ACE_InputCDR::to_boolean (byte_order)) == 0)
ACE_THROW (CORBA::MARSHAL ());
cdr.reset_byte_order (ACE_static_cast(int,byte_order));
if ((cdr >> target_priority) == 0)
ACE_THROW (CORBA::MARSHAL ());
// Save the target priority in the response service
// context to propagate back to the client as specified
// by the RTCORBA specification.
reply_service_context.set_context (*context);
}
else
{
// Use default priority if none came in the request.
// (Request must have come from a non-RT ORB.)
target_priority = cached_policies.server_priority ();
}
}
else
// SERVER_DECLARED PriorityModel processing.
{
// Use the request associated with the servant.
target_priority = this->servant_priority_;
}
const char *priority_model;
if (client_propagated)
priority_model = "RTCORBA::CLIENT_PROPAGATED";
else
priority_model = "RTCORBA::SERVER_DECLARED";
// Change the priority of the current thread for the duration of
// request.
if (target_priority != TAO_INVALID_PRIORITY &&
target_priority != this->original_priority_)
{
if (TAO_debug_level > 0)
{
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("%s processing ")
ACE_TEXT ("(%P|%t): original thread priority %d ")
ACE_TEXT ("temporarily changed to %d\n"),
priority_model,
original_priority_,
target_priority));
}
if (tph->set_thread_priority (target_priority,
ACE_TRY_ENV)
== -1)
ACE_THROW (CORBA::DATA_CONVERSION (1, CORBA::COMPLETED_NO));
this->state_ = PRIORITY_RESET_REQUIRED;
}
else if (TAO_debug_level > 0)
ACE_DEBUG ((LM_DEBUG,
ACE_TEXT ("%s processing ")
ACE_TEXT ("(%P|%t): original thread priority = ")
ACE_TEXT ("target priority = %d\n"),
priority_model,
target_priority));
}
void
RT_Priority_Model_Processing::post_invoke (
CORBA::Environment &ACE_TRY_ENV)
{
if (this->state_ == PRIORITY_RESET_REQUIRED)
{
this->state_ = NO_ACTION_REQUIRED;
// Reset the priority of the current thread back to its original
// value.
TAO_Protocols_Hooks *tph =
this->poa_.orb_core ().get_protocols_hooks (ACE_TRY_ENV);
ACE_CHECK;
if (tph->set_thread_priority (this->original_priority_,
ACE_TRY_ENV)
== -1)
ACE_THROW (CORBA::DATA_CONVERSION (1, CORBA::COMPLETED_NO));
}
}
/////////////////////////////////////////////////////////////////////////
TAO_RT_Servant_Dispatcher::~TAO_RT_Servant_Dispatcher (void)
{
}
void
TAO_RT_Servant_Dispatcher::dispatch (TAO_Object_Adapter::Servant_Upcall &servant_upcall,
TAO_ServerRequest &req,
CORBA::Environment &ACE_TRY_ENV)
{
// RTCORBA PriorityModelPolicy processing (may need to be
// moved/adjusted when POA threadpools are added). This is the
// earliest place we can do the processing, since only at this point
// we know the target POA.
RT_Priority_Model_Processing priority_processing (servant_upcall.poa (),
servant_upcall.priority ());
// Set thread's priority.
priority_processing.pre_invoke (req.request_service_context (),
req.reply_service_context (),
ACE_TRY_ENV);
ACE_CHECK;
// Servant dispatch.
servant_upcall.servant ()->_dispatch (req,
&servant_upcall,
ACE_TRY_ENV);
ACE_CHECK;
// Reset thread's priority to its original value. If this method
// isn't reached, i.e., because of an exception, the reset takes
// place in Priority_Model_Processing destructor.
priority_processing.post_invoke (ACE_TRY_ENV);
ACE_CHECK;
}
TAO_POA *
TAO_RT_Servant_Dispatcher::create_POA (const ACE_CString &name,
TAO_POA_Manager &poa_manager,
const TAO_POA_Policy_Set &policies,
TAO_POA *parent,
ACE_Lock &lock,
TAO_SYNCH_MUTEX &thread_lock,
TAO_ORB_Core &orb_core,
TAO_Object_Adapter *object_adapter,
CORBA_Environment &ACE_TRY_ENV)
{
TAO_RT_POA *poa;
ACE_NEW_THROW_EX (poa,
TAO_RT_POA (name,
poa_manager,
policies,
parent,
lock,
thread_lock,
orb_core,
object_adapter,
ACE_TRY_ENV),
CORBA::NO_MEMORY ());
ACE_CHECK_RETURN (0);
return poa;
}
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