bool IRQActivity::start()
{
if (m_irq == -1)
{ // no FD explicitely set. Try to find one.
ExecutionEngine* engine = dynamic_cast<ExecutionEngine*>(m_runner);
if (engine)
{
Provider* provider = dynamic_cast<Provider*>(engine->getParent());
if (provider)
m_irq = provider->getIRQ();
}
}
if (m_irq == -1)
{
Logger::log() << Logger::Error << "no IRQ set for IRQActivity" << Logger::endl;
return false;
}
char name[20];
if (snprintf(name, 20, "IRQActivity%d", m_irq) >= 20)
{
Logger::log() << Logger::Error << "something is wrong with m_irq. Are you trying to do a buffer overflow ?" << strerror(errno) << Logger::endl;
return false;
}
int ret = rt_intr_create(&m_handle, name, m_irq, 0);
if (ret != 0)
{
Logger::log() << Logger::Error << "cannot create interrupt object for IRQ " << m_irq << ": " << strerror(-ret) << Logger::endl;
return false;
}
if (! Activity::start())
{
rt_intr_delete(&m_handle);
return false;
}
return true;
}
