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Implement tracking channels in emu.c

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This commit is contained in:
Rodrigo Arias 2021-10-21 16:44:13 +02:00
parent 6b83789460
commit cd430a35ce
1 changed files with 66 additions and 5 deletions
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71
emu.c
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@ -79,13 +79,74 @@ find_thread(struct ovni_eproc *proc, pid_t tid)
static void
emit_channels(struct ovni_emu *emu)
{
struct ovni_ethread *th;
int i;
th = emu->cur_thread;
struct ovni_cpu *cpu;
struct ovni_chan *chan_cpu, *chan_th;
struct ovni_ethread *th, *last_th;
int i, j, k, nrunning, st;
/* Compute the CPU derived channels from the threads */
for(i=0; i<CHAN_MAX; i++)
chan_emit(&th->chan[i]);
{
for(j=0; j<emu->total_ncpus; j++)
{
cpu = emu->global_cpu[j];
chan_cpu = &cpu->chan[i];
if(chan_cpu->track != CHAN_TRACK_TH_RUNNING)
{
//dbg("cpu chan %d not tracking threads\n", i);
break;
}
/* Count running threads */
for(k=0, nrunning=0; k<cpu->nthreads; k++)
{
th = cpu->thread[k];
if(th->state == TH_ST_RUNNING)
{
last_th = th;
nrunning++;
}
}
if(nrunning == 0)
{
//dbg("cpu chan %d disabled: no running threads\n", i);
if(chan_is_enabled(chan_cpu))
chan_enable(chan_cpu, 0);
}
else if(nrunning > 1)
{
//dbg("cpu chan %d bad: multiple threads\n", i);
if(!chan_is_enabled(chan_cpu))
chan_enable(chan_cpu, 1);
chan_set(chan_cpu, -1);
}
else
{
chan_th = &th->chan[i];
//dbg("cpu chan %d good: one thread\n", i);
if(!chan_is_enabled(chan_cpu))
chan_enable(chan_cpu, 1);
if(chan_is_enabled(chan_th))
chan_set(chan_cpu, chan_get_st(&last_th->chan[i]));
else
chan_set(chan_cpu, ST_BAD);
}
}
}
/* Emit only the channels that have been updated. We need a list
* of updated channels */
for(i=0; i<emu->total_nthreads; i++)
for(j=0; j<CHAN_MAX; j++)
chan_emit(&emu->global_thread[i]->chan[j]);
for(i=0; i<emu->total_ncpus; i++)
for(j=0; j<CHAN_MAX; j++)
chan_emit(&emu->global_cpu[i]->chan[j]);
}
static void