bool KMeans::Execute()
{
InitCluster();
for(g_uint iter=0; iter<m_max_iteration; iter++)
{
bool exit = true;
g_uint cluster_id = 0;
kmean_point_t* pt = m_points;
for(g_uint i=0; i<m_point_count; i++, pt++)
{
cluster_id = FindPointCluster(pt->x, pt->y);
if(cluster_id != pt->cluster)
{
pt->cluster = cluster_id;
exit = false;
}
//printf("%d\n", cluster_id);
}
if(exit)
{
break;
}
else
{
UpdateCluster();
}
}
#ifdef DEBUG
#endif
return true;
}
/*
* Initialize ConfigDB
*/
tConfigDB* ConfigInitialize(int mode,char * addr,int port,char * filename)
{
debug("start ConfigInitialize...\n");
if(strlen(addr)>NAME_STR_LEN || strlen(filename)>NAME_STR_LEN)
{
fprintf(stderr,"Args Error,%s:%d\n",__FILE__,__LINE__);
return NULL;
}
tConfigDB* db = (tConfigDB*)malloc(sizeof(tConfigDB));
strncpy(db->filename,filename,NAME_STR_LEN);
strncpy(db->addr,addr,NAME_STR_LEN);
db->port = port;
if(mode & LOCAL_MODE)
{
/* open config database file */
}
else if(mode & GRID_MODE)
{
/* start as Master */
if(strcmp(addr,IP_ADDR) == 0 && PORT == port)
{
debug("GRID_MODE:Master.\n");
mode |= MASTER_MODE;
db->cluster = (void*)InitCluster();
AddNode((tCluster*)db->cluster,addr,port);
}
else /* start as Data Node */
{
debug("GRID_MODE:Data Node.\n");
db->cluster = (void*)RegisterAndLoadClusterNodes(addr,port);
}
}
else
{
goto ERROR;
}
/* create local database */
db->db = DBCreate(filename);
/* start Service Engine */
debug("start Service Engine.\n");
if(pthread_create(&(db->engine),NULL,(void*)ServiceEngine,(void*)db) != 0)
{
fprintf(stderr,"Service Engine pthread_create Error,%s:%d\n",__FILE__,__LINE__);
goto ERROR;
}
if(ConnectDataNode((tCluster*)db->cluster,addr,port,filename) != 0)
{
goto ERROR;
}
return db;
ERROR:
ConfigDestroy(db);
return NULL;
}