bool SelectPoller::poll(const std::chrono::milliseconds& timeout)
{
FD_ZERO(&m_readfds);
FD_ZERO(&m_writefds);
FD_ZERO(&m_errorfds);
int max_fd = 0;
for(const auto& pollable : m_pollables)
{
auto line = pollable.first;
auto events = pollable.second;
int handle = *static_cast<int*>(line->getNativeHandle());
if((events & LineEvent::Read) != LineEvent::None)
FD_SET(handle, &m_readfds);
if((events & LineEvent::Write) != LineEvent::None)
FD_SET(handle, &m_writefds);
if((events & LineEvent::Error) != LineEvent::None)
FD_SET(handle, &m_errorfds);
if(handle > max_fd)
max_fd = handle;
}
struct timeval tv;
auto secs = std::chrono::duration_cast<std::chrono::seconds>(timeout);
tv.tv_sec = secs.count();
tv.tv_usec = std::chrono::duration_cast<std::chrono::microseconds>(timeout - secs).count();
int result = select(max_fd + 1, &m_readfds, &m_writefds, &m_errorfds, &tv);
m_events.clear();
if(result < 0)
throw IoException("Polling error, errno = " + std::to_string(errno));
else if(result > 0)
{
for(size_t i = 0; i < m_pollables.size(); i++)
{
auto line = m_pollables[i].first;
int* handle = static_cast<int*>(line->getNativeHandle());
LineEvent events = LineEvent::None;
if(FD_ISSET(*handle, &m_readfds))
{
events |= LineEvent::Read;
}
if(FD_ISSET(*handle, &m_writefds))
{
events |= LineEvent::Write;
}
if(FD_ISSET(*handle, &m_errorfds))
{
events |= LineEvent::Error;
}
m_events[line] = events;
}
return true;
}
return false;
}
JNI_METHOD(jstring, getTypeNative)
{
HEIFPP::Item *instance = (HEIFPP::Item *) getNativeHandle(env, self);
return env->NewStringUTF(instance->getType().value);
}
unsigned int sfShader_getNativeHandle(const sfShader* shader)
{
CSFML_CALL_RETURN(shader, getNativeHandle(), 0);
}
