DInst *QEMUReader::executeHead(FlowID fid)
/* speculative advance of execution {{{1 */
{
if (!ruffer[fid].empty()) {
DInst *dinst = ruffer[fid].getHead();
ruffer[fid].popHead();
I(dinst); // We just added, there should be one or more
return dinst;
}
int conta = 0;
while(!tsfifo[fid].full()) {
pthread_mutex_lock(&mutex_ctrl); // BEGIN
if (tsfifo_snd_mutex_blocked[fid]) {
tsfifo_snd_mutex_blocked[fid] = 0;
pthread_mutex_unlock(&tsfifo_snd_mutex[fid]);
//MSG("2.alarmt snd%d",fid);
}
#if 0
if (tsfifo_rcv_mutex_blocked == 0) {
tsfifo_rcv_mutex_blocked = 1;
pthread_mutex_unlock(&mutex_ctrl); // END
//MSG("1.sleep rcv%d",fid);
pthread_mutex_lock(&tsfifo_rcv_mutex);
//MSG("1.wakeup rcv%d",fid);
}else{
pthread_mutex_unlock(&mutex_ctrl); // END
}
#else
pthread_mutex_unlock(&mutex_ctrl); // END
#endif
if (qsamplerlist[fid]->isActive(fid) == false) {
MSG("DOWN");
return 0;
}
if (!live_qemu_active) {
pthread_mutex_lock(&mutex_live);
pthread_cond_wait(&cond_live, &mutex_live);
pthread_mutex_unlock(&mutex_live);
}
if (conta++>100) {
//printf("+%d",fid);
return 0;
}
}
for(int i=32;i<tsfifo[fid].size();i++) {
RAWDInst *rinst = tsfifo[fid].getHeadRef();
DInst **dinsth = ruffer[fid].getInsertPointRef();
*dinsth = DInst::create(rinst->getInst(), rinst->getPC(), rinst->getAddr(), fid, rinst->getStatsFlag());
ruffer[fid].add();
tsfifo[fid].pop();
}
if (tsfifo_snd_mutex_blocked[fid]) {
tsfifo_snd_mutex_blocked[fid] = 0;
pthread_mutex_unlock(&tsfifo_snd_mutex[fid]);
}
if (ruffer[fid].empty())
return 0;
DInst *dinst = ruffer[fid].getHead();
ruffer[fid].popHead();
I(dinst); // We just added, there should be one or more
return dinst;
}
