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more kqueue code

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This commit is contained in:
Jeff Becker 2018-05-04 10:08:09 -04:00
parent 54573f3cd9
commit 8bd528aa50
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GPG Key ID: F357B3B42F6F9B05
6 changed files with 129 additions and 103 deletions
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2
contrib/backends/nntpchan-daemon/include/nntpchan/event.hpp
View File

@ -19,7 +19,7 @@ namespace ev
virtual bool readable() const { return true; };
virtual int read(char * buf, size_t sz) = 0;
virtual bool writeable() const { return true; };
virtual int write() = 0;
virtual int write(size_t avail) = 0;
virtual bool keepalive() = 0;
virtual void close()
{

4
contrib/backends/nntpchan-daemon/include/nntpchan/server.hpp
View File

@ -42,7 +42,7 @@ struct IServerConn : public ev::io
IServerConn(int fd, Server *parent, IConnHandler *h);
virtual ~IServerConn();
virtual int read(char * buf, size_t sz);
virtual int write();
virtual int write(size_t avail);
virtual void close();
virtual void Greet() = 0;
virtual bool IsTimedOut() = 0;
@ -67,7 +67,7 @@ public:
virtual bool readable() const { return false; };
virtual int read(char *,size_t) { return -1; };
virtual bool writeable() const { return false; };
virtual int write() {return -1; };
virtual int write(size_t) {return -1; };
virtual int accept();
virtual bool keepalive() { return true; };

162
contrib/backends/nntpchan-daemon/libnntpchan/epoll.hpp
View File

@ -82,97 +82,97 @@ namespace ev
idx = 0;
while(idx < res)
{
errno = 0;
ev = &evs[idx++];
if(ev->data.fd == sfd)
{
read(sfd, readbuf, sizeof(readbuf));
continue;
}
handler = static_cast<ev::io *>(ev->data.ptr);
if(ev->events & EPOLLERR || ev->events & EPOLLHUP)
{
handler->close();
delete handler;
continue;
}
if (handler->acceptable())
{
int acceptfd;
bool errored = false;
while(true)
errno = 0;
ev = &evs[idx++];
if(ev->data.fd == sfd)
{
acceptfd = handler->accept();
if(acceptfd == -1)
read(sfd, readbuf, sizeof(readbuf));
continue;
}
handler = static_cast<ev::io *>(ev->data.ptr);
if(ev->events & EPOLLERR || ev->events & EPOLLHUP)
{
if (errno == EAGAIN || errno == EWOULDBLOCK)
handler->close();
delete handler;
continue;
}
if (handler->acceptable())
{
int acceptfd;
bool errored = false;
while(true)
{
break;
}
perror("accept()");
errored = true;
break;
}
}
if(errored)
{
handler->close();
delete handler;
continue;
}
}
if(ev->events & EPOLLIN && handler->readable())
{
bool errored = false;
while(true)
{
int readed = handler->read(readbuf, sizeof(readbuf));
if(readed == -1)
{
if(errno != EAGAIN)
acceptfd = handler->accept();
if(acceptfd == -1)
{
perror("read()");
handler->close();
delete handler;
errored = true;
if (errno == EAGAIN || errno == EWOULDBLOCK)
{
break;
}
perror("accept()");
errored = true;
break;
}
}
if(errored)
{
handler->close();
delete handler;
continue;
}
break;
}
else if (readed == 0)
if(ev->events & EPOLLIN && handler->readable())
{
bool errored = false;
while(true)
{
int readed = handler->read(readbuf, sizeof(readbuf));
if(readed == -1)
{
if(errno != EAGAIN)
{
perror("read()");
handler->close();
delete handler;
errored = true;
}
break;
}
else if (readed == 0)
{
handler->close();
delete handler;
errored = true;
break;
}
}
if(errored) continue;
}
if(ev->events & EPOLLOUT && handler->writeable())
{
int written = handler->write(1024);
if(written < 0)
{
if (errno == EAGAIN || errno == EWOULDBLOCK)
{
// blocking
}
else
{
perror("write()");
handler->close();
delete handler;
}
}
}
if (!handler->keepalive())
{
handler->close();
delete handler;
errored = true;
break;
}
}
if(errored) continue;
}
if(ev->events & EPOLLOUT && handler->writeable())
{
int written = handler->write();
if(written < 0)
{
if (errno == EAGAIN || errno == EWOULDBLOCK)
{
// blocking
}
else
{
perror("write()");
handler->close();
delete handler;
}
}
}
if (!handler->keepalive())
{
handler->close();
delete handler;
}
}
}
while(res != -1 && conns);

12
contrib/backends/nntpchan-daemon/libnntpchan/event.cpp
View File

@ -7,9 +7,13 @@ typedef nntpchan::ev::EpollLoop LoopImpl;
#include "kqueue.hpp"
typedef nntpchan::ev::KqueueLoop LoopImpl;
#else
#ifdef __netbsd__
typedef nntpchan::ev::KqueueLoop LoopImpl;
#else
#error "unsupported platform"
#endif
#endif
#endif
namespace nntpchan
{
@ -38,14 +42,20 @@ namespace nntpchan
{
return false;
}
handler->fd = fd;
if(bind(fd, addr, slen) == -1)
{
::close(fd);
return false;
}
if (listen(fd, 5) == -1)
{
::close(fd);
return false;
}
handler->fd = fd;
return TrackConn(handler);
}

15
contrib/backends/nntpchan-daemon/libnntpchan/kqueue.hpp
View File

@ -22,11 +22,6 @@ namespace ev
::close(kfd);
}
virtual bool BindTCP(const sockaddr * addr, ev::io * handler)
{
}
virtual bool TrackConn(ev::io * handler)
{
kevent event;
@ -133,7 +128,17 @@ namespace ev
}
if(ev->filter & EVFILT_WRITE && handler->writable())
{
int writespace = ev->data;
int written = handler->write(writespace);
if(written > 0)
{
}
}
if(!handler->keepalive())
{
handler->close();
delete handler;
}
}
}

31
contrib/backends/nntpchan-daemon/libnntpchan/server.cpp
View File

@ -39,7 +39,7 @@ void Server::OnAccept(int f)
{
m_conns.push_back(conn);
conn->Greet();
conn->write();
conn->write(1024);
}
else
{
@ -101,19 +101,20 @@ bool IServerConn::keepalive()
return !m_handler->ShouldClose();
}
int IServerConn::write()
int IServerConn::write(size_t avail)
{
auto leftovers = m_writeLeftover.size();
ssize_t written;
if(leftovers)
{
if(leftovers > 1024)
if(leftovers > avail)
{
leftovers = 1024;
leftovers = avail;
}
written = ::write(fd, m_writeLeftover.c_str(), leftovers);
if(written > 0)
{
avail -= written;
m_writeLeftover = m_writeLeftover.substr(written);
}
else
@ -126,13 +127,23 @@ int IServerConn::write()
{
if(!m_handler->HasNextLine())
{
return 0;
return written;
}
auto line = m_handler->GetNextLine();
written = ::write(fd, line.c_str(), line.size());
if(written > 0)
int wrote;
if(line.size() <= avail)
{
m_writeLeftover = line.substr(written);
wrote = ::write(fd, line.c_str(), line.size());
}
else
{
auto subline = line.substr(0, avail);
wrote = ::write(fd, subline.c_str(), subline.size());
}
if(wrote > 0)
{
written += wrote;
m_writeLeftover = line.substr(wrote);
}
else
{
@ -140,8 +151,8 @@ int IServerConn::write()
return -1;
}
}
while(written > 0);
return 0;
while(avail > 0);
return written;
}
void IServerConn::close()