[Oslib-devel] oslib, scheduler, events...

[Juras B. <yb...@tu...>]

Hello oslib-devel,

just a sample code that doesn't work. why?
And what does TIME_NEW mean? there's no even a track of it in the
documentation. ll_gettime prints "LL time panic". And event_post,
called from the event handler generates exception 13. :((((

What I want is a simple task-switching cycle.


#include <ll/i386/stdlib.h>
#include <ll/i386/cons.h>
#include <ll/i386/error.h>
#include <ll/i386/mem.h>
#include <ll/i386/mb-info.h>
#include <ll/i386/pic.h>
#include <ll/i386/pit.h>
#include <ll/i386/hw-instr.h>
#include <ll/i386/hw-func.h>
#include <ll/sys/ll/ll-func.h>
#include <ll/sys/ll/event.h>
#include <sd32/typfix.h>
#include <sd32/sdinit.h>

// temp vars

char stk1[4*100];
char stk2[4*100];

CONTEXT thm,th1,th2;

CONTEXT ctx[3];

char active=0;

char *vmem=0xB8000;

struct ll_initparms ei;
struct timespec ts,tn;

void pth1(void*p)
{
        while(1)
        {
                vmem[0]='1';
                //ll_context_load(thm);
        }

}

void pth2(void*p)
{
        while(1)
        {
                vmem[0]='2';
                //ll_context_load(thm);

        }

}

void klr()
{

}
void ev_hnd(void*p);



void ev_hnd(void*p)
{
        CONTEXT tc,cur;

        cur=ll_context_from();

        active++;
        if (active>2) active=0;

        tc=ctx[active];

//      ll_gettime(TIME_NEW,&ts);
        ADDNANO2TIMESPEC(100000000,&ts);
        event_post(ts,ev_hnd,NULL);
        vmem[1]=~vmem[1];
        
        ll_context_to(tc);
}

void sd32_init(void) // called after ll_init
{
        thm=ll_context_from();

        th1=ll_context_create(pth1,stk1,NULL,klr,0);
        th2=ll_context_create(pth2,stk2,NULL,klr,0);

        ctx[0]=thm;
        ctx[1]=th1;
        ctx[2]=th2;

        ei.mode=LL_PERIODIC;
        ei.tick=1000; //ms

        event_init(&ei); // if I try LL_ONESHOT, then there's an error message!!!

        NULL_TIMESPEC(&ts);
        ADDNANO2TIMESPEC(100000000,&ts);

//      ll_gettime(TIME_EXACT,0); - doesn't work also!!!
        
//      cli();
//      printf_xy(0,1,"timenew: %d, timexact: %d\n",ll_gettime(TIME_NEW,&ts),ll_gettime(TIME_EXACT,&ts));
//      sti();
//      ADDNANO2TIMESPEC(100000000,&ts);
        
        event_post(ts,ev_hnd,NULL);// calls event handler but after it
       // halts :(

        
        

        while(1)
        {
                
                vmem[0]='m';
                //ll_context_load(th1);
                //ll_context_load(th2);
                
        }

}
  

-- 
Best regards,
 Juras                          mailto:yb...@tu...