ACE_TSS<TYPE>::ACE_TSS (TYPE *ts_obj)
: once_ (false),
key_ (ACE_OS::NULL_key)
{
// If caller has passed us a non-NULL TYPE *, then we'll just use
// this to initialize the thread-specific value. Thus, subsequent
// calls to operator->() will return this value. This is useful
// since it enables us to assign objects to thread-specific data
// that have arbitrarily complex constructors!
if (ts_obj != 0)
{
if (this->ts_init () == -1)
{
// Save/restore errno.
ACE_Errno_Guard error (errno);
// What should we do if this call fails?!
#if defined (ACE_HAS_WINCE)
::MessageBox (0,
ACE_TEXT ("ACE_Thread::keycreate() failed!"),
ACE_TEXT ("ACE_TSS::ACE_TSS"),
MB_OK);
#else
ACE_OS::fprintf (stderr,
"ACE_Thread::keycreate() failed!");
#endif /* ACE_HAS_WINCE */
return;
}
#if defined (ACE_HAS_THR_C_DEST)
// Encapsulate a ts_obj and it's destructor in an
// ACE_TSS_Adapter.
ACE_TSS_Adapter *tss_adapter = 0;
ACE_NEW (tss_adapter,
ACE_TSS_Adapter ((void *) ts_obj,
ACE_TSS<TYPE>::cleanup));
// Put the adapter in thread specific storage
if (ACE_Thread::setspecific (this->key_,
(void *) tss_adapter) != 0)
{
delete tss_adapter;
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("ACE_Thread::setspecific() failed!")));
}
#else
if (ACE_Thread::setspecific (this->key_,
(void *) ts_obj) != 0)
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("ACE_Thread::setspecific() failed!")));
#endif /* ACE_HAS_THR_C_DEST */
}
}
template <class TYPE> TYPE *
ACE_TSS<TYPE>::ts_object (TYPE *new_ts_obj)
{
// Note, we shouldn't hold the keylock at this point because
// <ts_init> does it for us and we'll end up with deadlock
// otherwise...
if (this->once_ == 0)
{
// Create and initialize thread-specific ts_obj.
if (this->ts_init () == -1)
return 0;
}
// Ensure that we are serialized!
ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, this->keylock_, 0);
TYPE *ts_obj = 0;
#if defined (ACE_HAS_THR_C_DEST)
ACE_TSS_Adapter *tss_adapter = 0;
if (ACE_Thread::getspecific (this->key_,
(void **) &tss_adapter) == -1)
return 0; // This should not happen!
if (tss_adapter != 0)
{
ts_obj = (TYPE *) tss_adapter->ts_obj_;
delete tss_adapter; // don't need this anymore
}
ACE_NEW_RETURN (tss_adapter,
ACE_TSS_Adapter ((void *) new_ts_obj,
ACE_TSS<TYPE>::cleanup),
0);
if (ACE_Thread::setspecific (this->key_,
(void *) tss_adapter) == -1)
{
delete tss_adapter;
return ts_obj; // This should not happen!
}
#else
if (ACE_Thread::getspecific (this->key_,
(void **) &ts_obj) == -1)
return 0; // This should not happen!
if (ACE_Thread::setspecific (this->key_,
(void *) new_ts_obj) == -1)
return ts_obj; // This should not happen!
#endif /* ACE_HAS_THR_C_DEST */
return ts_obj;
}
template <class TYPE> TYPE *
ACE_TSS<TYPE>::ts_object (TYPE *new_ts_obj)
{
// Note, we shouldn't hold the keylock at this point because
// <ts_init> does it for us and we'll end up with deadlock
// otherwise...
if (!this->once_)
{
// Create and initialize thread-specific ts_obj.
if (this->ts_init () == -1)
return 0;
}
TYPE *ts_obj = 0;
#if defined (ACE_HAS_THR_C_DEST)
ACE_TSS_Adapter *tss_adapter = 0;
void *temp = tss_adapter; // Need this temp to keep G++ from complaining.
if (ACE_Thread::getspecific (this->key_, &temp) == -1)
return 0; // This should not happen!
tss_adapter = static_cast <ACE_TSS_Adapter *> (temp);
if (tss_adapter != 0)
{
ts_obj = static_cast <TYPE *> (tss_adapter->ts_obj_);
delete tss_adapter; // don't need this anymore
}
ACE_NEW_RETURN (tss_adapter,
ACE_TSS_Adapter ((void *) new_ts_obj,
ACE_TSS<TYPE>::cleanup),
0);
if (ACE_Thread::setspecific (this->key_,
(void *) tss_adapter) == -1)
{
delete tss_adapter;
return ts_obj; // This should not happen!
}
#else
void *temp = ts_obj; // Need this temp to keep G++ from complaining.
if (ACE_Thread::getspecific (this->key_, &temp) == -1)
return 0; // This should not happen!
ts_obj = static_cast <TYPE *> (temp);
if (ACE_Thread::setspecific (this->key_, (void *) new_ts_obj) == -1)
return ts_obj; // This should not happen!
#endif /* ACE_HAS_THR_C_DEST */
return ts_obj;
}
template <class TYPE> TYPE *
ACE_TSS<TYPE>::ts_object (TYPE *new_ts_obj)
{
// Note, we shouldn't hold the keylock at this point because
// <ts_init> does it for us and we'll end up with deadlock
// otherwise...
if (!this->once_)
{
// Create and initialize thread-specific ts_obj.
if (this->ts_init () == -1)
return 0;
}
TYPE *ts_obj = 0;
#if defined (ACE_HAS_THR_C_DEST)
ACE_TSS_Adapter *tss_adapter = this->ts_value ();
if (tss_adapter != 0)
{
ts_obj = static_cast <TYPE *> (tss_adapter->ts_obj_);
// Don't delete tss_adapter yet. It can be double-deleted
// in case setspecific below fails.
}
ACE_TSS_Adapter *new_tss_adapter = 0;
ACE_NEW_RETURN (new_tss_adapter,
ACE_TSS_Adapter ((void *) new_ts_obj,
ACE_TSS<TYPE>::cleanup),
0);
if (this->ts_value (new_tss_adapter) == -1)
{
delete new_tss_adapter;
}
else
{
// Now it's fine to delete the old tss_adapter.
delete tss_adapter;
}
#else
ts_obj = this->ts_value ();
this->ts_value (new_ts_obj);
#endif /* ACE_HAS_THR_C_DEST */
return ts_obj;
}
ACE_TSS_Read_Guard<ACE_LOCK>::ACE_TSS_Read_Guard (ACE_LOCK &lock, bool block)
{
this->init_key ();
Guard_Type *guard = 0;
ACE_NEW (guard,
Read_Guard_Type (lock, block));
#if defined (ACE_HAS_THR_C_DEST)
ACE_TSS_Adapter *tss_adapter;
ACE_NEW (tss_adapter,
ACE_TSS_Adapter ((void *)guard,
ACE_TSS_Guard<ACE_LOCK>::cleanup));
ACE_Thread::setspecific (this->key_,
(void *) tss_adapter);
#else
ACE_Thread::setspecific (this->key_,
(void *) guard);
#endif /* ACE_HAS_THR_C_DEST */
}
ACE_TSS_Read_Guard<ACE_LOCK>::ACE_TSS_Read_Guard (ACE_LOCK &lock, int block)
{
// ACE_TRACE ("ACE_TSS_Read_Guard<ACE_LOCK>::ACE_TSS_Read_Guard");
this->init_key ();
ACE_Guard<ACE_LOCK> *guard;
ACE_NEW (guard,
ACE_Read_Guard<ACE_LOCK> (lock,
block));
#if defined (ACE_HAS_THR_C_DEST)
ACE_TSS_Adapter *tss_adapter;
ACE_NEW (tss_adapter,
ACE_TSS_Adapter ((void *)guard,
ACE_TSS_Guard<ACE_LOCK>::cleanup));
ACE_Thread::setspecific (this->key_,
(void *) tss_adapter);
#else
ACE_Thread::setspecific (this->key_,
(void *) guard);
#endif /* ACE_HAS_THR_C_DEST */
}
template <class TYPE> TYPE *
ACE_TSS<TYPE>::ts_get (void) const
{
if (!this->once_)
{
// Create and initialize thread-specific ts_obj.
if (const_cast< ACE_TSS < TYPE > * >(this)->ts_init () == -1)
// Seriously wrong..
return 0;
}
TYPE *ts_obj = 0;
#if defined (ACE_HAS_THR_C_DEST)
ACE_TSS_Adapter *tss_adapter = this->ts_value ();
ACE_TSS_Adapter *fake_tss_adapter = 0;
// If tss_adapter is not 0 but its ts_obj_ is 0 then we still need to create
// a proper ts_obj. That's the intent of this member function.
if (tss_adapter != 0 && tss_adapter->ts_obj_ == 0)
{
fake_tss_adapter = tss_adapter;
tss_adapter = 0;
}
// Check to see if this is the first time in for this thread.
if (tss_adapter == 0)
#else
ts_obj = this->ts_value ();
// Check to see if this is the first time in for this thread.
if (ts_obj == 0)
#endif /* ACE_HAS_THR_C_DEST */
{
// Allocate memory off the heap and store it in a pointer in
// thread-specific storage (on the stack...).
ts_obj = this->make_TSS_TYPE ();
if (ts_obj == 0)
return 0;
#if defined (ACE_HAS_THR_C_DEST)
// Encapsulate a ts_obj and it's destructor in an
// ACE_TSS_Adapter.
ACE_NEW_RETURN (tss_adapter,
ACE_TSS_Adapter (ts_obj,
ACE_TSS<TYPE>::cleanup), 0);
// Put the adapter in thread specific storage
if (this->ts_value (tss_adapter) == -1)
{
delete tss_adapter;
delete ts_obj;
return 0; // Major problems, this should *never* happen!
}
#else
// Store the dynamically allocated pointer in thread-specific
// storage.
if (this->ts_value (ts_obj) == -1)
{
delete ts_obj;
return 0; // Major problems, this should *never* happen!
}
#endif /* ACE_HAS_THR_C_DEST */
}
#if defined (ACE_HAS_THR_C_DEST)
// Delete the adapter that didn't actually have a real ts_obj.
delete fake_tss_adapter;
// Return the underlying ts object.
return static_cast <TYPE *> (tss_adapter->ts_obj_);
#else
return ts_obj;
#endif /* ACE_HAS_THR_C_DEST */
}
template <class TYPE> TYPE *
ACE_TSS<TYPE>::ts_get (void) const
{
if (!this->once_)
{
// Create and initialize thread-specific ts_obj.
if (const_cast< ACE_TSS < TYPE > * >(this)->ts_init () == -1)
// Seriously wrong..
return 0;
}
TYPE *ts_obj = 0;
#if defined (ACE_HAS_THR_C_DEST)
ACE_TSS_Adapter *tss_adapter = 0;
// Get the adapter from thread-specific storage
void *temp = tss_adapter; // Need this temp to keep G++ from complaining.
if (ACE_Thread::getspecific (this->key_, &temp) == -1)
return 0; // This should not happen!
tss_adapter = static_cast <ACE_TSS_Adapter *> (temp);
// Check to see if this is the first time in for this thread.
if (tss_adapter == 0)
#else
// Get the ts_obj from thread-specific storage. Note that no locks
// are required here...
void *temp = ts_obj; // Need this temp to keep G++ from complaining.
if (ACE_Thread::getspecific (this->key_, &temp) == -1)
return 0; // This should not happen!
ts_obj = static_cast <TYPE *> (temp);
// Check to see if this is the first time in for this thread.
if (ts_obj == 0)
#endif /* ACE_HAS_THR_C_DEST */
{
// Allocate memory off the heap and store it in a pointer in
// thread-specific storage (on the stack...).
ts_obj = this->make_TSS_TYPE ();
if (ts_obj == 0)
return 0;
#if defined (ACE_HAS_THR_C_DEST)
// Encapsulate a ts_obj and it's destructor in an
// ACE_TSS_Adapter.
ACE_NEW_RETURN (tss_adapter,
ACE_TSS_Adapter (ts_obj,
ACE_TSS<TYPE>::cleanup), 0);
// Put the adapter in thread specific storage
if (ACE_Thread::setspecific (this->key_,
(void *) tss_adapter) != 0)
{
delete tss_adapter;
delete ts_obj;
return 0; // Major problems, this should *never* happen!
}
#else
// Store the dynamically allocated pointer in thread-specific
// storage.
if (ACE_Thread::setspecific (this->key_,
(void *) ts_obj) != 0)
{
delete ts_obj;
return 0; // Major problems, this should *never* happen!
}
#endif /* ACE_HAS_THR_C_DEST */
}
#if defined (ACE_HAS_THR_C_DEST)
// Return the underlying ts object.
return static_cast <TYPE *> (tss_adapter->ts_obj_);
#else
return ts_obj;
#endif /* ACE_HAS_THR_C_DEST */
}