HRESULT crAddCallback(CALLBACK_DESCRIPTOR* callback)
{
HRESULT hResult = NO_ERROR;
// First check for required key types, these are described in the cr.h
hResult = kvIsKey(callback, CALLBACK_DESCRIPTOR_TYPE);
if (hResult != NO_ERROR) return hResult;
hResult = kvIsKey(callback, CALLBACK_DESCRIPTOR_NEXT);
if (hResult != NO_ERROR) return hResult;
#ifdef _SYSDEBUG
// check in debug mode never to allow adding of the same element twice
if (crFindCallback(CR_FIND_CALLBACK_THIS, 0, 0, callback, &callback) == TRUE)
{
char* name = NULL;
kvGetValue(callback, CALLBACK_DESCRIPTOR_NAME, (uint32*) &name);
sysDebugPrintf("cr error: can't add callback '%s'(0x%08X) twice\n\r", (name) ? name : "un-named", callback);
}
#endif //_SYSDEBUG
// exclusive access for the cr list (mutex)
hResult = TCMutexLock(crListMutexSemID);
if (hResult != NO_ERROR) return hResult;
// need to link this descriptor into the list, by making the crDescHead the next element, and making this the crDescHead
kvSetValue(callback, CALLBACK_DESCRIPTOR_NEXT, (uint32) crDescHead);
crDescHead = callback;
// exclusive access for the cr list (mutex)
TCMutexUnlock(crListMutexSemID);
return hResult;
}
void kvFreeKey(KEYVALUE* list, uint32 key)
{
HRESULT hResult = NO_ERROR;
uint32 curkey, curvalue;
if (list == NULL)
{
hResult = E_NULL_PTR;
sysLogError(hResult, __LINE__, moduleName);
return;
}
hResult = kvIsKey(list, key);
if (hResult != NO_ERROR) return;
DO_FOREVER
{
curkey = list->key;
curvalue = list->value;
if (curkey == KV_TERMINATEKEY || curvalue == KV_TERMINATEVALUE) break;
if (curkey == key)
{
list->key = KV_KEYSPACE;
break;
}
list++;
}
}
