INST_INIT
inst->state = INST_INIT;
if (inst->state < INST_INIT)
if (inst->state != INST_INIT)
if (inst->state < INST_INIT || inst->state >= INST_STOP)
if (inst->state < INST_INIT || inst->state >= INST_STOP)
if (!inst || !(inst->state >= INST_INIT && inst->state < INST_STOP))