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// $Id: Dispatcher_Task.cpp 91670 2010-09-08 18:02:26Z johnnyw $
#include "Dispatcher_Task.h"
#include "ace/Malloc_T.h"
#include "ace/OS_NS_errno.h"
#if ! defined (__ACE_INLINE__)
#include "Dispatcher_Task.inl"
#endif /* __ACE_INLINE__ */
namespace
//anonymous namespace - use this to avoid polluting the global namespace
{
const int ALLOC_POOL_CHUNKS = 200;
}
namespace Kokyu
{
typedef ACE_Cached_Allocator<Dispatch_Queue_Item, ACE_SYNCH_MUTEX>
Dispatch_Queue_Item_Allocator;
int
Dispatcher_Task::initialize ()
{
switch(curr_config_info_.dispatching_type_)
{
case FIFO_DISPATCHING:
ACE_NEW_RETURN (
this->the_queue_,
ACE_Message_Queue<ACE_SYNCH>,
-1);
break;
case DEADLINE_DISPATCHING:
ACE_NEW_RETURN (
this->the_queue_,
ACE_Dynamic_Message_Queue<ACE_SYNCH> (deadline_msg_strategy_),
-1);
break;
case LAXITY_DISPATCHING:
ACE_NEW_RETURN (
this->the_queue_,
ACE_Dynamic_Message_Queue<ACE_SYNCH> (laxity_msg_strategy_),
-1);
break;
default:
return -1;
}
if (this->the_queue_ != 0)
{
this->msg_queue(this->the_queue_);
}
if (this->allocator_ == 0)
{
ACE_NEW_RETURN (this->allocator_,
Dispatch_Queue_Item_Allocator(ALLOC_POOL_CHUNKS),
-1);
own_allocator_ = 1;
}
return 0;
}
int
Dispatcher_Task::svc (void)
{
int done = 0;
ACE_hthread_t thr_handle;
ACE_Thread::self (thr_handle);
int prio;
if (ACE_Thread::getprio (thr_handle, prio) == -1)
{
if (errno == ENOTSUP)
{
ACE_DEBUG((LM_DEBUG,
ACE_TEXT ("getprio not supported on this platform\n")
));
return 0;
}
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("getprio failed")),
-1);
}
//ACE_DEBUG ((LM_DEBUG, "(%t) Dispatcher Thread started prio=%d\n", prio));
while (!done)
{
ACE_Message_Block *mb = 0;
if (this->getq (mb) == -1)
{
if (ACE_OS::last_error () == ESHUTDOWN)
{
return 0;
}
else
{
ACE_ERROR ((LM_ERROR,
"EC (%P|%t) getq error in Dispatching Queue\n"));
}
}
//ACE_DEBUG ((LM_DEBUG, "(%t) : next command got from queue\n"));
Dispatch_Queue_Item *qitem =
dynamic_cast<Dispatch_Queue_Item*> (mb);
if (qitem == 0)
{
ACE_Message_Block::release (mb);
continue;
}
Dispatch_Command* command = qitem->command ();
ACE_ASSERT(command != 0);
int result = command->execute ();
if (command->can_be_deleted ())
command->destroy ();
ACE_Message_Block::release (mb);
if (result == -1)
done = 1;
}
return 0;
}
int
Dispatcher_Task::enqueue (const Dispatch_Command* cmd,
const QoSDescriptor& qos_info)
{
void* buf = this->allocator_->malloc (sizeof (Dispatch_Queue_Item));
if (buf == 0)
return -1;
ACE_Message_Block *mb =
new (buf) Dispatch_Queue_Item (cmd,
qos_info,
&(this->data_block_),
ACE_Message_Block::DONT_DELETE,
this->allocator_);
this->putq (mb);
return 0;
}
int Dispatcher_Task::get_native_prio ()
{
ACE_hthread_t thr_handle;
ACE_Thread::self (thr_handle);
int prio;
if (ACE_Thread::getprio (thr_handle, prio) == -1)
{
if (errno == ENOTSUP)
{
ACE_DEBUG((LM_DEBUG,
ACE_TEXT ("getprior not supported on this platform\n")
));
return 0;
}
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("getprio failed")),
-1);
}
return prio;
}
void Dispatch_Queue_Item::init_i (const QoSDescriptor& qos_info)
{
this->msg_priority (qos_info.preemption_priority_);
this->msg_execution_time (qos_info.execution_time_);
this->msg_deadline_time (qos_info.deadline_);
}
}
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