// insert one job into the queue
void datacloud::insertjob(int col,int row,const unsigned char *mapfile,int hlod,const unsigned char *texfile,int tlod,const unsigned char *fogfile,BOOLINT immediate,BOOLINT loprio)
{
double time;
jobqueueelem *oldjob,*newjob;
// check for already existing job
oldjob=checkjob(col,row,mapfile,hlod,texfile,tlod,fogfile,immediate,loprio);
// reset access time
if (oldjob!=NULL)
{
time=gettime();
if (mapfile!=NULL) oldjob->hfield->access=time;
if (texfile!=NULL) oldjob->texture->access=time;
if (fogfile!=NULL) oldjob->fogmap->access=time;
return;
}
// create new job
newjob=new jobqueueelem;
newjob->col=col;
newjob->row=row;
// schedule height field
if (mapfile!=NULL) newjob->hfield=inserttile(mapfile,col,row,FALSE,immediate,loprio,hlod);
else newjob->hfield=NULL;
newjob->hlod=hlod;
// schedule texture map
if (texfile!=NULL) newjob->texture=inserttile(texfile,col,row,TRUE,immediate,loprio,tlod);
else newjob->texture=NULL;
newjob->tlod=tlod;
// schedule fog field
if (fogfile!=NULL) newjob->fogmap=inserttile(fogfile,col,row,FALSE,immediate,loprio,0);
else newjob->fogmap=NULL;
newjob->loprio=loprio;
// insert job into job queue
if (immediate) insertjob(NULL,newjob); // insert immediate job at head
else insertjob(JOBQUEUETAIL,newjob); // insert job at tail
}
// insert one job into the queue
void datacloud::insertjob(int col,int row,unsigned char *mapfile,int hlod,unsigned char *texfile,int tlod,unsigned char *fogfile,BOOLINT immediate,BOOLINT loprio)
{
// check for already existing job
if (checkjob(mapfile,texfile,fogfile,immediate,loprio)) return;
jobqueueelem *newjob=new jobqueueelem;
newjob->col=col;
newjob->row=row;
// schedule height field
if (mapfile!=NULL) newjob->hfield=inserttile(mapfile,col,row,FALSE,immediate,loprio);
else newjob->hfield=NULL;
newjob->hlod=hlod;
// schedule texture map
if (texfile!=NULL) newjob->texture=inserttile(texfile,col,row,TRUE,immediate,loprio);
else newjob->texture=NULL;
newjob->tlod=tlod;
// schedule fog field
if (fogfile!=NULL) newjob->fogmap=inserttile(fogfile,col,row,FALSE,immediate,loprio);
else newjob->fogmap=NULL;
newjob->loprio=loprio;
// insert immediate job at begin
if (immediate) insertjob(NULL,newjob);
// insert hi prio job before lo prio jobs
else if (!loprio)
{
jobqueueelem *job=JOBQUEUETAIL;
// scan past lo prio jobs in reverse order
while (job!=NULL)
{
if (!job->loprio) break;
job=job->prev;
}
// insert after last hi prio job
insertjob(job,newjob);
}
// insert lo prio job at end
else insertjob(JOBQUEUETAIL,newjob);
}
// insert a tile into the cache
tilecacheelem *datacloud::inserttile(const unsigned char *tileid,int col,int row,BOOLINT istexture,BOOLINT immediate,BOOLINT loprio,int lod)
{
tilecacheelem *oldtile,*newtile;
// check for already existing tile
oldtile=checktile(tileid,col,row,istexture,immediate,loprio,lod);
// lock critical section
if (ISNOTREADY) LOCK_CALLBACK(START_DATA);
// already existing tile
if (oldtile!=NULL)
{
oldtile->refcount++;
newtile=oldtile;
}
// allocate and initialize new tile
else
{
newtile=new tilecacheelem;
newtile->tileid=(unsigned char *)strdup((char *)tileid);
newtile->tile=new databuf;
newtile->col=col;
newtile->row=row;
newtile->istexture=istexture;
newtile->loprio=loprio;
newtile->lod=lod;
newtile->refcount=1;
newtile->isavailable=FALSE;
newtile->isloading=FALSE;
newtile->background=0;
}
// load immediate data
if (immediate && !newtile->isavailable)
{
// signal background thread to finish
signalthread();
// check if actual tile is already being loaded in the background
if (newtile->isloading)
{
// unlock critical section
if (ISNOTREADY) UNLOCK_CALLBACK(START_DATA);
// wait for background thread to finish loading
stopthread(newtile->background);
// relock critical section
if (ISNOTREADY) LOCK_CALLBACK(START_DATA);
}
// load actual tile directly
if (!newtile->isavailable)
{
// load in foreground
loadtile(newtile);
// decrease pending tile count
if (oldtile!=NULL) PENDINGTILES--;
}
}
// reset access time
newtile->access=gettime();
newtile->isdelayed=FALSE;
// unlock critical section
if (ISNOTREADY) UNLOCK_CALLBACK(START_DATA);
// insert tile at cache tail
if (oldtile==NULL) inserttile(TILECACHETAIL,newtile);
return(newtile);
}
// insert a tile into the cache
tilecacheelem *datacloud::inserttile(unsigned char *tileid,int col,int row,BOOLINT istexture,BOOLINT immediate,BOOLINT loprio)
{
int i;
tilecacheelem *oldtile,*newtile;
// check for already existing tile
oldtile=checktile(tileid,col,row,istexture,immediate,loprio);
// already existing tile
if (oldtile!=NULL)
{
newtile=oldtile;
newtile->refcount++;
}
// allocate and initialize new tile
else
{
newtile=new tilecacheelem;
newtile->tileid=(unsigned char *)strdup((char *)tileid);
newtile->tile=new databuf;
newtile->col=col;
newtile->row=row;
newtile->istexture=istexture;
newtile->loprio=loprio;
newtile->refcount=1;
newtile->isavailable=FALSE;
newtile->isloading=FALSE;
newtile->background=0;
}
// lock critical section
if (ISNOTREADY) LOCK_CALLBACK(START_DATA);
// load immediate data
if (immediate && !newtile->isavailable)
{
// signal background thread to finish
signalthread();
// check if actual tile is already being loaded in the background
if (newtile->isloading)
{
// unlock critical section
if (ISNOTREADY) UNLOCK_CALLBACK(START_DATA);
// wait for background thread to finish loading
stopthread(newtile->background);
// relock critical section
if (ISNOTREADY) LOCK_CALLBACK(START_DATA);
}
// load actual tile directly
if (!newtile->isavailable)
{
// signal direct loading
newtile->isloading=TRUE;
// unlock critical section
if (ISNOTREADY) UNLOCK_CALLBACK(START_DATA);
// lock io
if (ISNOTREADY)
if (CONFIGURE_AUTOLOCKIO!=0)
if (LOCKIO_CALLBACK!=NULL) LOCKIO_CALLBACK(START_DATA);
// load data
REQUEST_CALLBACK(tileid,newtile->tile,istexture,0,REQUEST_DATA);
// autocompress textures
if (CONFIGURE_AUTOCOMPRESS!=0) newtile->tile->autocompress();
// unlock io
if (ISNOTREADY)
if (CONFIGURE_AUTOLOCKIO!=0)
if (LOCKIO_CALLBACK!=NULL) UNLOCKIO_CALLBACK(START_DATA);
// relock critical section
if (ISNOTREADY) LOCK_CALLBACK(START_DATA);
// signal availability
newtile->isavailable=TRUE;
newtile->isloading=FALSE;
// decrease pending tile count
if (oldtile!=NULL) PENDINGTILES--;
}
}
// unlock critical section
if (ISNOTREADY) UNLOCK_CALLBACK(START_DATA);
// set access time
newtile->access=minitime();
// insert tile at cache tail
if (oldtile==NULL) inserttile(TILECACHETAIL,newtile);
return(newtile);
}