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// Module.cpp
// $Id$
#if !defined (ACE_MODULE_C)
#define ACE_MODULE_C
#define ACE_BUILD_DLL
#include "ace/Module.h"
#include "ace/Stream_Modules.h"
#if !defined (__ACE_INLINE__)
#include "ace/Module.i"
#endif /* __ACE_INLINE__ */
ACE_ALLOC_HOOK_DEFINE(ACE_Module)
template <ACE_SYNCH_1> void
ACE_Module<ACE_SYNCH_2>::dump (void) const
{
ACE_TRACE ("ACE_Module<ACE_SYNCH_2>::dump");
}
template <ACE_SYNCH_1> void
ACE_Module<ACE_SYNCH_2>::writer (ACE_Task<ACE_SYNCH_2> *q,
int flags /* = M_DELETE_WRITER */)
{
ACE_TRACE ("ACE_Module<ACE_SYNCH_2>::writer");
// Close and maybe delete old writer
this->close_i (1, flags);
this->q_pair_[1] = q;
if (q != 0)
ACE_CLR_BITS (q->flags_, ACE_Task_Flags::ACE_READER);
// Don't allow the caller to change the reader status.
ACE_SET_BITS (flags_, (flags & M_DELETE_WRITER));
}
template <ACE_SYNCH_1> void
ACE_Module<ACE_SYNCH_2>::reader (ACE_Task<ACE_SYNCH_2> *q,
int flags /* = M_DELETE_READER */)
{
ACE_TRACE ("ACE_Module<ACE_SYNCH_2>::reader");
// Close and maybe delete old writer
this->close_i (0, flags);
this->q_pair_[0] = q;
if (q != 0)
ACE_SET_BITS (q->flags_, ACE_Task_Flags::ACE_READER);
// don't allow the caller to change the reader status
ACE_SET_BITS (flags_, (flags & M_DELETE_READER));
}
// Link this ACE_Module on top of ACE_Module M.
template <ACE_SYNCH_1> void
ACE_Module<ACE_SYNCH_2>::link (ACE_Module<ACE_SYNCH_2> *m)
{
ACE_TRACE ("ACE_Module<ACE_SYNCH_2>::link");
this->next (m);
this->writer ()->next (m->writer ());
m->reader ()->next (this->reader ());
}
template <ACE_SYNCH_1> int
ACE_Module<ACE_SYNCH_2>::open (const char *mod_name,
ACE_Task<ACE_SYNCH_2> *writer_q,
ACE_Task<ACE_SYNCH_2> *reader_q,
void *arg,
int flags /* = M_DELETE */)
{
ACE_TRACE ("ACE_Module<ACE_SYNCH_2>::open");
this->name (mod_name);
this->arg_ = arg;
// We may already have readers and/or writers.
if (this->reader ())
this->close_i (0, M_DELETE_READER);
if (this->writer ())
this->close_i (1, M_DELETE_WRITER);
if (writer_q == 0)
{
writer_q = new ACE_Thru_Task<ACE_SYNCH_2>;
ACE_SET_BITS (flags, M_DELETE_WRITER);
}
if (reader_q == 0)
{
reader_q = new ACE_Thru_Task<ACE_SYNCH_2>;
ACE_SET_BITS (flags, M_DELETE_READER);
}
this->reader (reader_q);
this->writer (writer_q);
// Setup back pointers.
reader_q->mod_ = this;
writer_q->mod_ = this;
// Save the flags
this->flags_ = flags;
// Make sure that the memory is allocated before proceding.
if (writer_q == 0 || reader_q == 0)
{
// These calls will delete writer_q and/or reader_q, if
// necessary.
this->close_i (0, M_DELETE_READER);
this->close_i (1, M_DELETE_WRITER);
// Reset back pointers.
reader_q->mod_ = 0;
writer_q->mod_ = 0;
errno = ENOMEM;
return -1;
}
return 0;
}
// Set and get pointer to sibling ACE_Task in ACE_Module.
template <ACE_SYNCH_1> ACE_Task<ACE_SYNCH_2> *
ACE_Module<ACE_SYNCH_2>::sibling (ACE_Task<ACE_SYNCH_2> *orig)
{
ACE_TRACE ("ACE_Module<ACE_SYNCH_2>::sibling");
if (this->q_pair_[0] == orig)
return this->q_pair_[1];
else if (this->q_pair_[1] == orig)
return this->q_pair_[0];
else
return 0;
}
template <ACE_SYNCH_1>
ACE_Module<ACE_SYNCH_2>::ACE_Module (void)
: flags_ (0)
{
ACE_TRACE ("ACE_Module<ACE_SYNCH_2>::ACE_Module");
this->name ("<unknown>");
// Do nothing...
this->q_pair_[0] = 0;
this->q_pair_[1] = 0;
}
template <ACE_SYNCH_1>
ACE_Module<ACE_SYNCH_2>::~ACE_Module (void)
{
ACE_TRACE ("ACE_Module<ACE_SYNCH_2>::~ACE_Module");
// Only close down if we haven't already done so.
if (this->reader () || this->writer ())
this->close ();
}
template <ACE_SYNCH_1>
ACE_Module<ACE_SYNCH_2>::ACE_Module (const char *mod_name,
ACE_Task<ACE_SYNCH_2> *writer_q,
ACE_Task<ACE_SYNCH_2> *reader_q,
void *args,
int flags /* = M_DELETE */)
: flags_ (0)
{
ACE_TRACE ("ACE_Module<ACE_SYNCH_2>::ACE_Module");
this->q_pair_[0] = 0;
this->q_pair_[1] = 0;
if (this->open (mod_name, writer_q, reader_q, args, flags) == -1)
ACE_ERROR ((LM_ERROR, "%p\n", "ACE_Module"));
}
template <ACE_SYNCH_1> int
ACE_Module<ACE_SYNCH_2>::close (int flags /* = M_DELETE_NONE */)
{
ACE_TRACE ("ACE_Module<ACE_SYNCH_2>::close");
int result = 0;
ACE_SET_BITS (flags_, flags);
if (this->close_i (0, flags) == -1)
result = -1;
if (this->close_i (1, flags) == -1)
result = -1;
return result;
}
template <ACE_SYNCH_1> int
ACE_Module<ACE_SYNCH_2>::close_i (int which,
int flags)
{
ACE_TRACE ("ACE_Module<ACE_SYNCH_2>::close_i");
if (this->q_pair_[which] == 0)
return 0;
// Copy task pointer to prevent problems when ACE_Task::close
// changes the task pointer
ACE_Task<ACE_SYNCH_2> *task = this->q_pair_[which];
// Change so that close doesn't get called again from the task base.
// Now close the task.
int result = 0;
if (task->module_closed () == -1)
result = -1;
task->flush ();
task->next (0);
// Should we also delete it ?
if (flags != M_DELETE_NONE
&& ACE_BIT_ENABLED (flags_, which + 1))
{
// Only delete the Tasks if there aren't any more threads
// running in them.
if (task->thr_count () == 0)
delete task;
}
// Set the tasks pointer to 0 so that we don't try to close()
// this object again if the destructor gets called.
this->q_pair_[which] = 0;
// Finally remove the delete bit.
ACE_CLR_BITS (flags_, which + 1);
return result;
}
#endif /* ACE_MODULE_C */
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