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ACE_Task_Ex<, ACE_MESSAGE_TYPE > Class Template Reference

Primary interface for application message processing, as well as input and output message queueing. More...

#include <Task_Ex_T.h>

Inheritance diagram for ACE_Task_Ex<, ACE_MESSAGE_TYPE >:

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List of all members.

Public Types

typedef ACE_Message_Queue_Ex<
ACE_MESSAGE_TYPE, ACE_SYNCH_USE > 		MESSAGE_QUEUE_EX

Public Member Functions

 ACE_Task_Ex (ACE_Thread_Manager *thr_mgr=0, MESSAGE_QUEUE_EX *mq=0)
virtual ~ACE_Task_Ex (void)
 Destructor.

MESSAGE_QUEUE_EX * msg_queue (void)
 Gets the message queue associated with this task.

void msg_queue (MESSAGE_QUEUE_EX *)
 Sets the message queue associated with this task.

int putq (ACE_MESSAGE_TYPE *, ACE_Time_Value *timeout=0)
int getq (ACE_MESSAGE_TYPE *&mb, ACE_Time_Value *timeout=0)
int ungetq (ACE_MESSAGE_TYPE *, ACE_Time_Value *timeout=0)
int reply (ACE_MESSAGE_TYPE *, ACE_Time_Value *timeout=0)
int put_next (ACE_MESSAGE_TYPE *msg, ACE_Time_Value *timeout=0)
int can_put (ACE_MESSAGE_TYPE *)
 Tests whether we can enqueue a message without blocking.

const ACE_TCHAR * name (void) const
ACE_Task< ACE_SYNCH_USE > * next (void)
 Get next Task pointer.

void next (ACE_Task< ACE_SYNCH_USE > *)
 Set next Task pointer.

ACE_Task< ACE_SYNCH_USE > * sibling (void)
 Alwasy return 0.

ACE_Module< ACE_SYNCH_USE > * module (void) const
 Return the Task's Module if there is one, else returns 0.

int flush (u_long flag=ACE_Task_Flags::ACE_FLUSHALL)
void water_marks (ACE_IO_Cntl_Msg::ACE_IO_Cntl_Cmds, size_t)
 Manipulate watermarks.

void dump (void) const
 Dump the state of an object.


Public Attributes

MESSAGE_QUEUE_EX * msg_queue_
 Queue of messages on the ACE_Task..

int delete_msg_queue_
 1 if should delete Message_Queue, 0 otherwise.

ACE_Module< ACE_SYNCH_USE > * mod_
 Back-pointer to the enclosing module.

ACE_Task< ACE_SYNCH_USE > * next_
 Pointer to adjacent ACE_Task.

 ACE_ALLOC_HOOK_DECLARE
 Declare the dynamic allocation hooks.


Private Member Functions

void operator= (const ACE_Task_Ex< _ACE_SYNCH, ACE_MESSAGE_TYPE > &)
 ACE_Task_Ex (const ACE_Task_Ex< _ACE_SYNCH, ACE_MESSAGE_TYPE > &)

Friends

class ACE_Module< ACE_SYNCH_USE >
class ACE_Module_Type

Detailed Description

template<ACE_SYNCH_DECL, class ACE_MESSAGE_TYPE>
class ACE_Task_Ex<, ACE_MESSAGE_TYPE >

Primary interface for application message processing, as well as input and output message queueing.

Unlike ACE_Task, these class doesn't have the ability to be a part of a Stream chain. I.e. You cannot (yet) chain modules based on ACE_Task_Ex.

Todo:
: We can merge ACE_Task and ACE_Task_Ex to be one class. something like that: template <ACE_SYNCH_DECL, ACE_MESSAGE_TYPE = ACE_Message_Block> class ACE_Task : public ACE_Task_Base { // use here the code from ACE_Task_Ex using ACE_Message_Queue_Ex };
Now specialized version of ACE_Task with ACE_Message_Block as its ACE_MESSAGE_TYPE...

template class ACE_Task <ACE_SYNCH_USE, ACE_Message_Block> : public ACE_Task_Base { // put here the good old ACE_Task code };

When User (and legacy code) write ACE_Task<ACE_MT_SYNCH>, specialized ACE_Task code is in action.

Definition at line 61 of file Task_Ex_T.h.

Member Typedef Documentation

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
typedef ACE_Message_Queue_Ex<ACE_MESSAGE_TYPE, ACE_SYNCH_USE> ACE_Task_Ex<, ACE_MESSAGE_TYPE >::MESSAGE_QUEUE_EX
 

Definition at line 66 of file Task_Ex_T.h.

Constructor & Destructor Documentation

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_Task_Ex<, ACE_MESSAGE_TYPE >::ACE_Task_Ex (  ACE_Thread_Manager *  thr_mgr = 0,
MESSAGE_QUEUE_EX *  mq = 0
) 
 

Initialize a Task, supplying a thread manager and a message queue. If the user doesn't supply a ACE_Message_Queue pointer then we'll allocate one dynamically. Otherwise, we'll use the one passed as a parameter.

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_Task_Ex<, ACE_MESSAGE_TYPE >::~ACE_Task_Ex (  void   )  [virtual]
 

Destructor.

Definition at line 69 of file Task_Ex_T.cpp.

References ACE_TRACE, ACE_Task_Ex<, ACE_MESSAGE_TYPE >::delete_msg_queue_, and ACE_Task_Ex<, ACE_MESSAGE_TYPE >::msg_queue_. 

00070 {
00071   ACE_TRACE ("ACE_Task_Ex<ACE_SYNCH_USE, ACE_MESSAGE_TYPE>::~ACE_Task_Ex");
00072   if (this->delete_msg_queue_)
00073     delete this->msg_queue_;
00074 
00075   // These assignments aren't strickly necessary but they help guard
00076   // against odd race conditions...
00077   this->delete_msg_queue_ = 0;
00078 }

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_Task_Ex<, ACE_MESSAGE_TYPE >::ACE_Task_Ex (  const ACE_Task_Ex< _ACE_SYNCH, ACE_MESSAGE_TYPE > &   )  [private]
 

Member Function Documentation

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_INLINE int ACE_Task_Ex<, ACE_MESSAGE_TYPE >::can_put (  ACE_MESSAGE_TYPE *   ) 
 

Tests whether we can enqueue a message without blocking.

Definition at line 28 of file Task_Ex_T.inl.

References ACE_TRACE. 

00029 {
00030   ACE_TRACE ("ACE_Task_Ex<ACE_SYNCH_USE,ACE_MESSAGE_TYPE>::can_put");
00031   assert (!"not implemented");
00032   return -1;
00033 }

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_BEGIN_VERSIONED_NAMESPACE_DECL void ACE_Task_Ex<, ACE_MESSAGE_TYPE >::dump (  void   )  const
 

Dump the state of an object.

Definition at line 23 of file Task_Ex_T.cpp.

References ACE_BEGIN_DUMP, ACE_DEBUG, ACE_END_DUMP, ACE_LIB_TEXT, ACE_TRACE, ACE_Message_Queue_Ex< ACE_MESSAGE_TYPE, >::dump(), LM_DEBUG, and ACE_Task_Ex<, ACE_MESSAGE_TYPE >::msg_queue_. 

00024 {
00025 #if defined (ACE_HAS_DUMP)
00026   ACE_TRACE ("ACE_Task_Ex<ACE_SYNCH_USE, ACE_MESSAGE_TYPE>::dump");
00027   ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
00028   ACE_DEBUG ((LM_DEBUG,  ACE_LIB_TEXT ("\nthr_mgr_ = %x"), this->thr_mgr_));
00029   this->msg_queue_->dump ();
00030   ACE_DEBUG ((LM_DEBUG,  ACE_LIB_TEXT ("delete_msg_queue_ = %d\n"), this->delete_msg_queue_));
00031   ACE_DEBUG ((LM_DEBUG,  ACE_LIB_TEXT ("\nflags = %x"), this->flags_));
00032   ACE_DEBUG ((LM_DEBUG,  ACE_LIB_TEXT ("\nmod_ = %x"), this->mod_));
00033   ACE_DEBUG ((LM_DEBUG,  ACE_LIB_TEXT ("\nnext_ = %x"), this->next_));
00034   ACE_DEBUG ((LM_DEBUG,  ACE_LIB_TEXT ("\ngrp_id_ = %d"), this->grp_id_));
00035   ACE_DEBUG ((LM_DEBUG,  ACE_LIB_TEXT ("\nthr_count_ = %d"), this->thr_count_));
00036 #if defined (ACE_MT_SAFE) && (ACE_MT_SAFE != 0)
00037   this->lock_.dump ();
00038 #endif /* ACE_MT_SAFE */
00039 
00040   ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
00041 #endif /* ACE_HAS_DUMP */
00042 }

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_INLINE int ACE_Task_Ex<, ACE_MESSAGE_TYPE >::flush (  u_long  flag = ACE_Task_Flags::ACE_FLUSHALL  ) 
 

Flush the task's queue, i.e., free all of the enqueued message blocks and releases any threads blocked on the queue. Note that if this conflicts with the C++ iostream function, just rewrite the iostream function as ::.

Definition at line 50 of file Task_Ex_T.inl.

References ACE_BIT_ENABLED, ACE_TRACE, ACE_Message_Queue_Ex< ACE_MESSAGE_TYPE, >::close(), and ACE_Task_Ex<, ACE_MESSAGE_TYPE >::msg_queue_. 

00051 {
00052   ACE_TRACE ("ACE_Task_Ex<ACE_SYNCH_USE,ACE_MESSAGE_TYPE>::flush");
00053   if (ACE_BIT_ENABLED (flag, ACE_Task_Flags::ACE_FLUSHALL))
00054     return this->msg_queue_ != 0 && this->msg_queue_->close ();
00055   else
00056     return -1;   // Note, need to be more careful about what we free...
00057 }

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_INLINE int ACE_Task_Ex<, ACE_MESSAGE_TYPE >::getq (  ACE_MESSAGE_TYPE *&  mb,
ACE_Time_Value *  timeout = 0
) 
 

Extract the first message from the queue (blocking). Note that uses <{absolute}> time rather than <{relative}> time. Returns number of items in queue if the call succeeds or -1 otherwise.

Definition at line 21 of file Task_Ex_T.inl.

References ACE_TRACE, ACE_Message_Queue_Ex< ACE_MESSAGE_TYPE, >::dequeue_head(), and ACE_Task_Ex<, ACE_MESSAGE_TYPE >::msg_queue_. 

00022 {
00023   ACE_TRACE ("ACE_Task_Ex<ACE_SYNCH_USE,ACE_MESSAGE_TYPE>::getq");
00024   return this->msg_queue_->dequeue_head (mb, tv);
00025 }

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_Module< ACE_SYNCH_USE > * ACE_Task_Ex<, ACE_MESSAGE_TYPE >::module (  void   )  const
 

Return the Task's Module if there is one, else returns 0.

Definition at line 106 of file Task_Ex_T.cpp.

References ACE_TRACE, and ACE_Task_Ex<, ACE_MESSAGE_TYPE >::mod_. 

00107 {
00108   ACE_TRACE ("ACE_Task_Ex<ACE_SYNCH_USE, ACE_MESSAGE_TYPE>::module");
00109   return this->mod_;
00110 }

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
void ACE_Task_Ex<, ACE_MESSAGE_TYPE >::msg_queue (  MESSAGE_QUEUE_EX *   ) 
 

Sets the message queue associated with this task.

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_Message_Queue_Ex< ACE_MESSAGE_TYPE, ACE_SYNCH_USE > * ACE_Task_Ex<, ACE_MESSAGE_TYPE >::msg_queue (  void   ) 
 

Gets the message queue associated with this task.

Definition at line 72 of file Task_Ex_T.inl.

References ACE_TRACE, and ACE_Task_Ex<, ACE_MESSAGE_TYPE >::msg_queue_. 

00073 {
00074   ACE_TRACE ("ACE_Task_Ex<ACE_SYNCH_USE,ACE_MESSAGE_TYPE>::msg_queue");
00075   return this->msg_queue_;
00076 }

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
const ACE_TCHAR * ACE_Task_Ex<, ACE_MESSAGE_TYPE >::name (  void   )  const
 

Return the name of the enclosing Module if there's one associated with the Task, else returns 0.

Definition at line 96 of file Task_Ex_T.cpp.

References ACE_TRACE, ACE_Task_Ex<, ACE_MESSAGE_TYPE >::mod_, and ACE_Module< ACE_SYNCH_USE >::name(). 

00097 {
00098   ACE_TRACE ("ACE_Task_Ex<ACE_SYNCH_USE, ACE_MESSAGE_TYPE>::name");
00099   if (this->mod_ == 0)
00100     return 0;
00101   else
00102     return this->mod_->name ();
00103 }

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_INLINE void ACE_Task_Ex<, ACE_MESSAGE_TYPE >::next (  ACE_Task< ACE_SYNCH_USE > *   ) 
 

Set next Task pointer.

Definition at line 95 of file Task_Ex_T.inl.

References ACE_TRACE. 

00096 {
00097   ACE_TRACE ("ACE_Task_Ex<ACE_SYNCH_USE,ACE_MESSAGE_TYPE>::next");
00098   this->next_ = q;
00099 }

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_INLINE ACE_Task< ACE_SYNCH_USE > * ACE_Task_Ex<, ACE_MESSAGE_TYPE >::next (  void   ) 
 

Get next Task pointer.

Definition at line 88 of file Task_Ex_T.inl.

References ACE_TRACE. 

00089 {
00090   ACE_TRACE ("ACE_Task_Ex<ACE_SYNCH_USE,ACE_MESSAGE_TYPE>::next");
00091   return this->next_;
00092 }

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
void ACE_Task_Ex<, ACE_MESSAGE_TYPE >::operator= (  const ACE_Task_Ex< _ACE_SYNCH, ACE_MESSAGE_TYPE > &   )  [private]
 

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_INLINE int ACE_Task_Ex<, ACE_MESSAGE_TYPE >::put_next (  ACE_MESSAGE_TYPE *  msg,
ACE_Time_Value *  timeout = 0
) 
 

Transfer message to the adjacent ACE_Task_Ex in a ACE_Stream. Note that uses <{absolute}> time rather than <{relative}> time.

Definition at line 104 of file Task_Ex_T.inl.

References ACE_TRACE. 

00107 {
00108   ACE_TRACE ("ACE_Task_Ex<ACE_SYNCH_USE,ACE_MESSAGE_TYPE>::put_next");
00109   return  -1; // this->next_ == 0 ? -1 : this->next_->put (msg, tv);
00110 }

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_INLINE int ACE_Task_Ex<, ACE_MESSAGE_TYPE >::putq (  ACE_MESSAGE_TYPE *  ,
ACE_Time_Value *  timeout = 0
) 
 

Insert message into the message queue. Note that uses <{absolute}> time rather than <{relative}> time.

Definition at line 36 of file Task_Ex_T.inl.

References ACE_TRACE, ACE_Message_Queue_Ex< ACE_MESSAGE_TYPE, >::enqueue_tail(), and ACE_Task_Ex<, ACE_MESSAGE_TYPE >::msg_queue_. 

00037 {
00038   ACE_TRACE ("ACE_Task_Ex<ACE_SYNCH_USE,ACE_MESSAGE_TYPE>::putq");
00039   return this->msg_queue_->enqueue_tail (mb, tv);
00040 }

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_INLINE int ACE_Task_Ex<, ACE_MESSAGE_TYPE >::reply (  ACE_MESSAGE_TYPE *  ,
ACE_Time_Value *  timeout = 0
) 
 

Turn the message around and send it back down the Stream. Note that uses <{absolute}> time rather than <{relative}> time.

Definition at line 79 of file Task_Ex_T.inl.

References ACE_TRACE. 

00080 {
00081   ACE_TRACE ("ACE_Task_Ex<ACE_SYNCH_USE,ACE_MESSAGE_TYPE>::reply");
00082   ACE_UNUSED_ARG (mb);
00083   ACE_UNUSED_ARG (tv);
00084   return -1 ; // this->sibling ()->put_next (mb, tv);
00085 }

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_Task< ACE_SYNCH_USE > * ACE_Task_Ex<, ACE_MESSAGE_TYPE >::sibling (  void   ) 
 

Alwasy return 0.

Todo:
FIXME

Todo:
FIXME Need to impl ACE_Moudle to support ACE_Task as well. Now always return 0 for sibling

Definition at line 81 of file Task_Ex_T.cpp.

References ACE_TRACE. 

00082 {
00083   ACE_TRACE ("ACE_Task_Ex<ACE_SYNCH_USE, ACE_MESSAGE_TYPE>::sibling");
00084   /// @todo FIXME Need to impl ACE_Moudle to support ACE_Task as well.
00085   /// Now always return 0 for sibling
00086   return 0;
00087 /*
00088   if (this->mod_ == 0)
00089     return 0;
00090   else
00091     return this->mod_->sibling (this);
00092 */
00093 }

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_INLINE int ACE_Task_Ex<, ACE_MESSAGE_TYPE >::ungetq (  ACE_MESSAGE_TYPE *  ,
ACE_Time_Value *  timeout = 0
) 
 

Return a message to the queue. Note that uses <{absolute}> time rather than <{relative}> time.

Definition at line 43 of file Task_Ex_T.inl.

References ACE_TRACE, ACE_Message_Queue_Ex< ACE_MESSAGE_TYPE, >::enqueue_head(), and ACE_Task_Ex<, ACE_MESSAGE_TYPE >::msg_queue_. 

00044 {
00045   ACE_TRACE ("ACE_Task_Ex<ACE_SYNCH_USE,ACE_MESSAGE_TYPE>::ungetq");
00046   return this->msg_queue_->enqueue_head (mb, tv);
00047 }

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_BEGIN_VERSIONED_NAMESPACE_DECL ACE_INLINE void ACE_Task_Ex<, ACE_MESSAGE_TYPE >::water_marks (  ACE_IO_Cntl_Msg::ACE_IO_Cntl_Cmds  ,
size_t 
) 
 

Manipulate watermarks.

Definition at line 10 of file Task_Ex_T.inl.

References ACE_IO_Cntl_Msg::ACE_IO_Cntl_Cmds, ACE_TRACE, ACE_Message_Queue_Ex< ACE_MESSAGE_TYPE, >::high_water_mark(), ACE_Message_Queue_Ex< ACE_MESSAGE_TYPE, >::low_water_mark(), and ACE_Task_Ex<, ACE_MESSAGE_TYPE >::msg_queue_. 

00012 {
00013   ACE_TRACE ("ACE_Task_Ex<ACE_SYNCH_USE,ACE_MESSAGE_TYPE>::water_marks");
00014   if (cmd == ACE_IO_Cntl_Msg::SET_LWM)
00015     this->msg_queue_->low_water_mark (wm_size);
00016   else /* cmd == ACE_IO_Cntl_Msg::SET_HWM */
00017     this->msg_queue_->high_water_mark (wm_size);
00018 }

Friends And Related Function Documentation

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
friend class ACE_Module< ACE_SYNCH_USE > [friend]
 

Definition at line 64 of file Task_Ex_T.h.

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
friend class ACE_Module_Type [friend]
 

Definition at line 65 of file Task_Ex_T.h.

Member Data Documentation

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_Task_Ex<, ACE_MESSAGE_TYPE >::ACE_ALLOC_HOOK_DECLARE
 

Declare the dynamic allocation hooks.

Definition at line 184 of file Task_Ex_T.h.

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
int ACE_Task_Ex<, ACE_MESSAGE_TYPE >::delete_msg_queue_
 

1 if should delete Message_Queue, 0 otherwise.

Definition at line 172 of file Task_Ex_T.h.

Referenced by ACE_Task_Ex<, ACE_MESSAGE_TYPE >::~ACE_Task_Ex().

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_Module<ACE_SYNCH_USE>* ACE_Task_Ex<, ACE_MESSAGE_TYPE >::mod_
 

Back-pointer to the enclosing module.

Definition at line 175 of file Task_Ex_T.h.

Referenced by ACE_Task_Ex<, ACE_MESSAGE_TYPE >::module(), and ACE_Task_Ex<, ACE_MESSAGE_TYPE >::name().

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
MESSAGE_QUEUE_EX* ACE_Task_Ex<, ACE_MESSAGE_TYPE >::msg_queue_
 

Queue of messages on the ACE_Task..

Definition at line 169 of file Task_Ex_T.h.

Referenced by ACE_Task_Ex<, ACE_MESSAGE_TYPE >::dump(), ACE_Task_Ex<, ACE_MESSAGE_TYPE >::flush(), ACE_Task_Ex<, ACE_MESSAGE_TYPE >::getq(), ACE_Task_Ex<, ACE_MESSAGE_TYPE >::msg_queue(), ACE_Task_Ex<, ACE_MESSAGE_TYPE >::putq(), ACE_Task_Ex<, ACE_MESSAGE_TYPE >::ungetq(), ACE_Task_Ex<, ACE_MESSAGE_TYPE >::water_marks(), and ACE_Task_Ex<, ACE_MESSAGE_TYPE >::~ACE_Task_Ex().

template<ACE_SYNCH_DECL , class ACE_MESSAGE_TYPE>
ACE_Task<ACE_SYNCH_USE>* ACE_Task_Ex<, ACE_MESSAGE_TYPE >::next_
 

Pointer to adjacent ACE_Task.

Definition at line 178 of file Task_Ex_T.h.

The documentation for this class was generated from the following files:
Generated on Thu Nov 9 11:30:45 2006 for ACE by doxygen 1.3.6