int
pthread_setspecific (pthread_key_t key, const void *value)
/*
* ------------------------------------------------------
* DOCPUBLIC
* This function sets the value of the thread specific
* key in the calling thread.
*
* PARAMETERS
* key
* an instance of pthread_key_t
* value
* the value to set key to
*
*
* DESCRIPTION
* This function sets the value of the thread specific
* key in the calling thread.
*
* RESULTS
* 0 successfully set value
* EAGAIN could not set value
* ENOENT SERIOUS!!
*
* ------------------------------------------------------
*/
{
pthread_t self;
int result = 0;
if (key != ptw32_selfThreadKey)
{
/*
* Using pthread_self will implicitly create
* an instance of pthread_t for the current
* thread if one wasn't explicitly created
*/
self = pthread_self ();
if (self == NULL)
{
return ENOENT;
}
}
else
{
/*
* Resolve catch-22 of registering thread with threadSelf
* key
*/
self = (pthread_t) pthread_getspecific (ptw32_selfThreadKey);
if (self == NULL)
{
self = (pthread_t) value;
}
}
result = 0;
if (key != NULL)
{
ThreadKeyAssoc *assoc;
if (self != NULL &&
key->destructor != NULL &&
value != NULL)
{
/*
* Only require associations if we have to
* call user destroy routine.
* Don't need to locate an existing association
* when setting data to NULL for WIN32 since the
* data is stored with the operating system; not
* on the association; setting assoc to NULL short
* circuits the search.
*/
assoc = (ThreadKeyAssoc *) self->keys;
/*
* Locate existing association
*/
while (assoc != NULL)
{
if (assoc->key == key)
{
/*
* Association already exists
*/
break;
}
assoc = assoc->nextKey;
}
/*
* create an association if not found
*/
if (assoc == NULL)
{
result = ptw32_tkAssocCreate (&assoc, self, key);
}
}
if (result == 0)
{
if ( ! TlsSetValue (key->key, (LPVOID) value))
{
result = EAGAIN;
}
}
}
return (result);
} /* pthread_setspecific */
int
pthread_setspecific (pthread_key_t key, const void *value)
{
pthread_t self;
int result = 0;
if (key != ptw32_selfThreadKey)
{
self = pthread_self ();
if (self.p == NULL)
{
return ENOENT;
}
}
else
{
ptw32_thread_t * sp = (ptw32_thread_t *) pthread_getspecific (ptw32_selfThreadKey);
if (sp == NULL)
{
if (value == NULL)
{
return ENOENT;
}
self = *((pthread_t *) value);
}
else
{
self = sp->ptHandle;
}
}
result = 0;
if (key != NULL)
{
if (self.p != NULL && key->destructor != NULL && value != NULL)
{
ptw32_mcs_local_node_t keyLock;
ptw32_mcs_local_node_t threadLock;
ptw32_thread_t * sp = (ptw32_thread_t *) self.p;
ThreadKeyAssoc *assoc;
ptw32_mcs_lock_acquire(&(key->keyLock), &keyLock);
ptw32_mcs_lock_acquire(&(sp->threadLock), &threadLock);
assoc = (ThreadKeyAssoc *) sp->keys;
while (assoc != NULL)
{
if (assoc->key == key)
{
break;
}
assoc = assoc->nextKey;
}
if (assoc == NULL)
{
result = ptw32_tkAssocCreate (sp, key);
}
ptw32_mcs_lock_release(&threadLock);
ptw32_mcs_lock_release(&keyLock);
}
if (result == 0)
{
if (!TlsSetValue (key->key, (LPVOID) value))
{
result = EAGAIN;
}
}
}
return (result);
}
