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* fhandler.h (class fhandler_socket): Remove has_been_closed member. 

* fhandler_socket.cc (fhandler_socket::recvfrom): Revert to
	overlapped I/O.
	(fhandler_socket::recvmsg): Ditto.
	(fhandler_socket::sendto): Ditto.
	(fhandler_socket::sendmsg): Ditto.
	* net.cc (wsock_event::prepare): Ditto.
	(wsock_event::wait): Ditto.  Evaluate overlapped result also after
	calling CancelIo (thanks to Patrick Samson <p_samson@yahoo.com>).
	(wsock_event::release): Remove.
	* wsock_event.h: Revert to overlapped I/O.
This commit is contained in:
Corinna Vinschen 2004-04-03 19:07:59 +00:00
parent 81961a5001
commit 321ddf2422
5 changed files with 115 additions and 164 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,17 @@
2004-04-03 Corinna Vinschen <corinna@vinschen.de>
* fhandler.h (class fhandler_socket): Remove has_been_closed member.
* fhandler_socket.cc (fhandler_socket::recvfrom): Revert to
overlapped I/O.
(fhandler_socket::recvmsg): Ditto.
(fhandler_socket::sendto): Ditto.
(fhandler_socket::sendmsg): Ditto.
* net.cc (wsock_event::prepare): Ditto.
(wsock_event::wait): Ditto. Evaluate overlapped result also after
calling CancelIo (thanks to Patrick Samson <p_samson@yahoo.com>).
(wsock_event::release): Remove.
* wsock_event.h: Revert to overlapped I/O.
2004-04-02 Corinna Vinschen <corinna@vinschen.de>
* net.cc (wsock_event::release): Use NULL handle in call to

1
winsup/cygwin/fhandler.h
View File

@ -377,7 +377,6 @@ class fhandler_socket: public fhandler_base
struct _WSAPROTOCOL_INFOA *prot_info_ptr;
char *sun_path;
int had_connect_or_listen;
int has_been_closed;
public:
fhandler_socket ();

140
winsup/cygwin/fhandler_socket.cc
View File

@ -122,7 +122,7 @@ get_inet_addr (const struct sockaddr *in, int inlen,
/* fhandler_socket */
fhandler_socket::fhandler_socket ()
: fhandler_base (), sun_path (NULL), has_been_closed (0)
: fhandler_base (), sun_path (NULL)
{
set_need_fork_fixup ();
prot_info_ptr = (LPWSAPROTOCOL_INFOA) cmalloc (HEAP_BUF,
@ -714,7 +714,7 @@ int
fhandler_socket::recvfrom (void *ptr, size_t len, int flags,
struct sockaddr *from, int *fromlen)
{
int res = SOCKET_ERROR;
int res;
DWORD ret;
flags &= MSG_WINMASK;
@ -726,28 +726,19 @@ fhandler_socket::recvfrom (void *ptr, size_t len, int flags,
{
WSABUF wsabuf = { len, (char *) ptr };
if (is_nonblocking () || has_been_closed)
res = WSARecvFrom (get_socket (), &wsabuf, 1, (ret = 0, &ret),
(DWORD *) &flags, from, fromlen, NULL, NULL);
if (is_nonblocking ())
res = WSARecvFrom (get_socket (), &wsabuf, 1, &ret, (DWORD *) &flags,
from, fromlen,
NULL, NULL);
else
{
wsock_event wsock_evt;
long evt = (FD_CLOSE | ((flags & MSG_OOB) ? FD_OOB : FD_READ));
if (wsock_evt.prepare (get_socket (), evt))
{
do
{
res = WSARecvFrom (get_socket (), &wsabuf, 1,
(ret = 0, &ret), (DWORD *) &flags,
from, fromlen, NULL, NULL);
}
while (res == SOCKET_ERROR
&& WSAGetLastError () == WSAEWOULDBLOCK
&& !has_been_closed
&& !(res = wsock_evt.wait (get_socket (),
has_been_closed)));
wsock_evt.release (get_socket ());
}
res = WSARecvFrom (get_socket (), &wsabuf, 1, &ret, (DWORD *) &flags,
from, fromlen,
wsock_evt.prepare (), NULL);
if (res == SOCKET_ERROR && WSAGetLastError () == WSA_IO_PENDING)
ret = res = wsock_evt.wait (get_socket (), (DWORD *) &flags);
}
}
@ -785,7 +776,7 @@ fhandler_socket::recvmsg (struct msghdr *msg, int flags, ssize_t tot)
struct sockaddr *from = (struct sockaddr *) msg->msg_name;
int *fromlen = from ? &msg->msg_namelen : NULL;
int res = SOCKET_ERROR;
int res;
if (!winsock2_active)
{
@ -852,29 +843,21 @@ fhandler_socket::recvmsg (struct msghdr *msg, int flags, ssize_t tot)
DWORD ret;
if (is_nonblocking () || has_been_closed)
if (is_nonblocking ())
res = WSARecvFrom (get_socket (),
wsabuf, iovcnt, (ret = 0, &ret), (DWORD *) &flags,
from, fromlen, NULL, NULL);
wsabuf, iovcnt, &ret, (DWORD *) &flags,
from, fromlen,
NULL, NULL);
else
{
wsock_event wsock_evt;
long evt = (FD_CLOSE | ((flags & MSG_OOB) ? FD_OOB : FD_READ));
if (wsock_evt.prepare (get_socket (), evt))
{
do
{
res = WSARecvFrom (get_socket (), wsabuf, iovcnt,
(ret = 0, &ret), (DWORD *) &flags,
from, fromlen, NULL, NULL);
}
while (res == SOCKET_ERROR
&& WSAGetLastError () == WSAEWOULDBLOCK
&& !has_been_closed
&& !(res = wsock_evt.wait (get_socket (),
has_been_closed)));
wsock_evt.release (get_socket ());
}
res = WSARecvFrom (get_socket (),
wsabuf, iovcnt, &ret, (DWORD *) &flags,
from, fromlen,
wsock_evt.prepare (), NULL);
if (res == SOCKET_ERROR && WSAGetLastError () == WSA_IO_PENDING)
ret = res = wsock_evt.wait (get_socket (), (DWORD *) &flags);
}
if (res == SOCKET_ERROR)
@ -917,9 +900,9 @@ fhandler_socket::sendto (const void *ptr, size_t len, int flags,
sockaddr_in sin;
if (to && !get_inet_addr (to, tolen, &sin, &tolen))
return -1;
return SOCKET_ERROR;
int res = SOCKET_ERROR;
int res;
DWORD ret;
if (!winsock2_active)
@ -930,35 +913,21 @@ fhandler_socket::sendto (const void *ptr, size_t len, int flags,
{
WSABUF wsabuf = { len, (char *) ptr };
if (is_nonblocking () || has_been_closed)
res = WSASendTo (get_socket (), &wsabuf, 1, (ret = 0, &ret),
if (is_nonblocking ())
res = WSASendTo (get_socket (), &wsabuf, 1, &ret,
flags & MSG_WINMASK,
(to ? (const struct sockaddr *) &sin : NULL), tolen,
NULL, NULL);
else
{
wsock_event wsock_evt;
if (wsock_evt.prepare (get_socket (), FD_CLOSE | FD_WRITE))
{
do
{
res = WSASendTo (get_socket (), &wsabuf, 1, (ret = 0, &ret),
flags & MSG_WINMASK,
(to ? (const struct sockaddr *) &sin : NULL),
tolen, NULL, NULL);
if (res != SOCKET_ERROR
|| WSAGetLastError () != WSAEWOULDBLOCK)
break;
if (ret > 0)
{
res = 0;
break;
}
}
while (!(res = wsock_evt.wait (get_socket (), has_been_closed))
&& !has_been_closed);
wsock_evt.release (get_socket ());
}
res = WSASendTo (get_socket (), &wsabuf, 1, &ret,
flags & MSG_WINMASK,
(to ? (const struct sockaddr *) &sin : NULL), tolen,
wsock_evt.prepare (), NULL);
if (res == SOCKET_ERROR && WSAGetLastError () == WSA_IO_PENDING)
ret = res = wsock_evt.wait (get_socket (), (DWORD *) &flags);
}
}
@ -998,7 +967,7 @@ fhandler_socket::sendmsg (const struct msghdr *msg, int flags, ssize_t tot)
struct iovec *const iov = msg->msg_iov;
const int iovcnt = msg->msg_iovlen;
int res = SOCKET_ERROR;
int res;
if (!winsock2_active)
{
@ -1067,34 +1036,21 @@ fhandler_socket::sendmsg (const struct msghdr *msg, int flags, ssize_t tot)
DWORD ret;
if (is_nonblocking () || has_been_closed)
res = WSASendTo (get_socket (), wsabuf, iovcnt, (ret = 0, &ret),
flags, (struct sockaddr *) msg->msg_name,
msg->msg_namelen, NULL, NULL);
if (is_nonblocking ())
res = WSASendTo (get_socket (), wsabuf, iovcnt, &ret, flags,
(struct sockaddr *) msg->msg_name,
msg->msg_namelen,
NULL, NULL);
else
{
wsock_event wsock_evt;
if (wsock_evt.prepare (get_socket (), FD_CLOSE | FD_WRITE))
{
do
{
res = WSASendTo (get_socket (), wsabuf, iovcnt,
(ret = 0, &ret), flags,
(struct sockaddr *) msg->msg_name,
msg->msg_namelen, NULL, NULL);
if (res != SOCKET_ERROR
|| WSAGetLastError () != WSAEWOULDBLOCK)
break;
if (ret > 0)
{
res = 0;
break;
}
}
while (!(res = wsock_evt.wait (get_socket (), has_been_closed))
&& !has_been_closed);
wsock_evt.release (get_socket ());
}
res = WSASendTo (get_socket (), wsabuf, iovcnt, &ret, flags,
(struct sockaddr *) msg->msg_name,
msg->msg_namelen,
wsock_evt.prepare (), NULL);
if (res == SOCKET_ERROR && WSAGetLastError () == WSA_IO_PENDING)
ret = res = wsock_evt.wait (get_socket (), (DWORD *) &flags);
}
if (res == SOCKET_ERROR)

112
winsup/cygwin/net.cc
View File

@ -50,83 +50,59 @@ extern "C"
int sscanf (const char *, const char *, ...);
} /* End of "C" section */
bool
wsock_event::prepare (int sock, long event_mask)
LPWSAOVERLAPPED
wsock_event::prepare ()
{
WSASetLastError (0);
if ((event = WSACreateEvent ()) == WSA_INVALID_EVENT)
debug_printf ("WSACreateEvent: %E");
else if (WSAEventSelect (sock, event, event_mask) == SOCKET_ERROR)
{
debug_printf ("WSAEventSelect: %E");
WSACloseEvent (event);
event = WSA_INVALID_EVENT;
}
return event != WSA_INVALID_EVENT;
}
LPWSAOVERLAPPED ret = NULL;
int
wsock_event::wait (int sock, int &closed)
{
int ret = SOCKET_ERROR;
int wsa_err = 0;
WSAEVENT ev[2] = { event, signal_arrived };
switch (WSAWaitForMultipleEvents (2, ev, FALSE, WSA_INFINITE, FALSE))
SetLastError (0);
if ((event = WSACreateEvent ()) != WSA_INVALID_EVENT)
{
case WSA_WAIT_EVENT_0:
WSANETWORKEVENTS evts;
if (!WSAEnumNetworkEvents (sock, event, &evts))
{
if (evts.lNetworkEvents & FD_READ)
{
if (evts.iErrorCode[FD_READ_BIT])
wsa_err = evts.iErrorCode[FD_READ_BIT];
else
ret = 0;
}
else if (evts.lNetworkEvents & FD_WRITE)
{
if (evts.iErrorCode[FD_WRITE_BIT])
wsa_err = evts.iErrorCode[FD_WRITE_BIT];
else
ret = 0;
}
if (evts.lNetworkEvents & FD_CLOSE)
{
closed = 1;
if (!wsa_err)
{
if (evts.iErrorCode[FD_CLOSE_BIT])
wsa_err = evts.iErrorCode[FD_CLOSE_BIT];
else
ret = 0;
}
}
if (wsa_err)
WSASetLastError (wsa_err);
}
break;
case WSA_WAIT_EVENT_0 + 1:
WSASetLastError (WSAEINTR);
break;
default:
WSASetLastError (WSAEFAULT);
memset (&ovr, 0, sizeof ovr);
ovr.hEvent = event;
ret = &ovr;
}
else if (GetLastError () == ERROR_PROC_NOT_FOUND) /* winsock2 not available */
WSASetLastError (0);
debug_printf ("%d = wsock_event::prepare ()", ret);
return ret;
}
void
wsock_event::release (int sock)
int
wsock_event::wait (int socket, LPDWORD flags)
{
int last_err = WSAGetLastError ();
/* KB 168349: NT4 fails if the event parameter is not NULL. */
WSAEventSelect (sock, NULL, 0);
int ret = SOCKET_ERROR;
WSAEVENT ev[2] = { event, signal_arrived };
DWORD len;
switch (WSAWaitForMultipleEvents (2, ev, FALSE, WSA_INFINITE, FALSE))
{
case WSA_WAIT_EVENT_0:
if (WSAGetOverlappedResult (socket, &ovr, &len, FALSE, flags))
ret = (int) len;
break;
case WSA_WAIT_EVENT_0 + 1:
if (!CancelIo ((HANDLE) socket))
{
debug_printf ("CancelIo() %E, fallback to blocking io");
WSAGetOverlappedResult (socket, &ovr, &len, TRUE, flags);
}
else if (WSAGetOverlappedResult (socket, &ovr, &len, FALSE, flags)
&& len > 0)
ret = (int) len;
else
WSASetLastError (WSAEINTR);
break;
case WSA_WAIT_FAILED:
break;
default: /* Should be impossible. *LOL* */
WSASetLastError (WSAEFAULT);
break;
}
WSACloseEvent (event);
unsigned long non_block = 0;
if (ioctlsocket (sock, FIONBIO, &non_block))
debug_printf ("return to blocking failed: %d", WSAGetLastError ());
else
WSASetLastError (last_err);
event = NULL;
return ret;
}
WSADATA wsadata;

12
winsup/cygwin/wsock_event.h
View File

@ -14,13 +14,19 @@ details. */
class wsock_event
{
WSAEVENT event;
WSAOVERLAPPED ovr;
public:
wsock_event () : event (NULL) {};
~wsock_event ()
{
if (event)
WSACloseEvent (event);
event = NULL;
};
/* The methods are implemented in net.cc */
bool prepare (int sock, long event_mask);
int wait (int sock, int &closed);
void release (int sock);
LPWSAOVERLAPPED prepare ();
int wait (int socket, LPDWORD flags);
};
#endif /* __WSOCK_EVENT_H__ */