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#include "services.h"
#include <sys/eventfd.h>
class PipeIO : public SocketIO
{
public:
/** Receive something from the buffer
* @param s The socket
* @param buf The buf to read to
* @param sz How much to read
* @return Number of bytes received
*/
int Recv(Socket *s, char *buf, size_t sz) const
{
static eventfd_t dummy;
return !eventfd_read(s->GetFD(), &dummy);
}
/** Write something to the socket
* @param s The socket
* @param buf What to write
* @return Number of bytes written
*/
int Send(Socket *s, const Anope::string &buf) const
{
return !eventfd_write(s->GetFD(), 1);
}
} pipeSocketIO;
Pipe::Pipe() : BufferedSocket()
{
this->IO = &pipeSocketIO;
this->Sock = eventfd(0, EFD_NONBLOCK);
if (this->Sock < 0)
throw CoreException(Anope::string("Could not create pipe: ") + Anope::LastError());
this->IPv6 = false;
SocketEngine::AddSocket(this);
}
bool Pipe::ProcessRead()
{
this->IO->Recv(this, NULL, 0);
return this->Read("");
}
bool Pipe::Read(const Anope::string &)
{
this->OnNotify();
return true;
}
void Pipe::Notify()
{
/* Note we send this immediatly. If use use Socket::Write and if this functions is called
* from a thread, only epoll is able to pick up the change to this sockets want flags immediately
* Other engines time out then pick up and write the change then read it back, which
* is too slow for most things.
*/
this->IO->Send(this, "");
}
void Pipe::OnNotify()
{
}
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