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newlib-cygwin
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* fhandler.h (class fhandler_socket): Add "owner" status flag. 

* fhandler_socket.cc (wait): Take flag parameter to take FD_OOB into
	account.  Don't wait infinitely.
	(fhandler_socket::recvfrom): Also wait for FD_OOB if socket owner.
	(fhandler_socket::recvmsg): Ditto.
	(fhandler_socket::sendto): Ditto.
	(fhandler_socket::sendmsg): Ditto.
	(fhandler_socket::fcntl): Set owner status flag if F_SETOWN with own
	pid is called.
This commit is contained in:
Corinna Vinschen 2004-05-10 15:21:01 +00:00
parent 94f29ccdf6
commit 75b5f30fdd
3 changed files with 50 additions and 12 deletions
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12
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,15 @@
2004-05-10 Corinna Vinschen <corinna@vinschen.de>
* fhandler.h (class fhandler_socket): Add "owner" status flag.
* fhandler_socket.cc (wait): Take flag parameter to take FD_OOB into
account. Don't wait infinitely.
(fhandler_socket::recvfrom): Also wait for FD_OOB if socket owner.
(fhandler_socket::recvmsg): Ditto.
(fhandler_socket::sendto): Ditto.
(fhandler_socket::sendmsg): Ditto.
(fhandler_socket::fcntl): Set owner status flag if F_SETOWN with own
pid is called.
2004-05-09 Pierre Humblet <pierre.humblet@ieee.org>
* environ.cc (build_env): Only try to construct required-but-missing

6
winsup/cygwin/fhandler.h
View File

@ -341,16 +341,17 @@ class fhandler_socket: public fhandler_base
unsigned saw_shutdown_read : 1; /* Socket saw a SHUT_RD */
unsigned saw_shutdown_write : 1; /* Socket saw a SHUT_WR */
unsigned closed : 1;
unsigned owner : 1;
unsigned connect_state : 2;
public:
status_flags () :
async_io (0), saw_shutdown_read (0), saw_shutdown_write (0),
closed (0), connect_state (unconnected)
closed (0), owner (0), connect_state (unconnected)
{}
} status;
bool prepare (HANDLE &event, long event_mask);
int wait (HANDLE event);
int wait (HANDLE event, int flags);
void release (HANDLE event);
public:
@ -363,6 +364,7 @@ class fhandler_socket: public fhandler_base
IMPLEMENT_STATUS_FLAG (bool, saw_shutdown_read)
IMPLEMENT_STATUS_FLAG (bool, saw_shutdown_write)
IMPLEMENT_STATUS_FLAG (bool, closed)
IMPLEMENT_STATUS_FLAG (bool, owner)
IMPLEMENT_STATUS_FLAG (conn_state, connect_state)
int bind (const struct sockaddr *name, int namelen);

44
winsup/cygwin/fhandler_socket.cc
View File

@ -713,15 +713,18 @@ fhandler_socket::prepare (HANDLE &event, long event_mask)
}
int
fhandler_socket::wait (HANDLE event)
fhandler_socket::wait (HANDLE event, int flags)
{
int ret = SOCKET_ERROR;
int wsa_err = 0;
WSAEVENT ev[2] = { event, signal_arrived };
WSANETWORKEVENTS evts;
switch (WSAWaitForMultipleEvents (2, ev, FALSE, WSA_INFINITE, FALSE))
switch (WSAWaitForMultipleEvents (2, ev, FALSE, 10, FALSE))
{
case WSA_WAIT_TIMEOUT:
ret = 0;
break;
case WSA_WAIT_EVENT_0:
if (!WSAEnumNetworkEvents (get_socket (), event, &evts))
{
@ -730,6 +733,19 @@ fhandler_socket::wait (HANDLE event)
ret = 0;
break;
}
if (evts.lNetworkEvents & FD_OOB)
{
if (evts.iErrorCode[FD_OOB_BIT])
wsa_err = evts.iErrorCode[FD_OOB_BIT];
else if (flags & MSG_OOB)
ret = 0;
else
{
raise (SIGURG);
WSASetLastError (WSAEINTR);
break;
}
}
if (evts.lNetworkEvents & FD_READ)
{
if (evts.iErrorCode[FD_READ_BIT])
@ -822,7 +838,7 @@ fhandler_socket::recvfrom (void *ptr, size_t len, int flags,
else
{
HANDLE evt;
if (prepare (evt, FD_CLOSE | ((flags & MSG_OOB) ? FD_OOB : FD_READ)))
if (prepare (evt, FD_CLOSE | FD_READ | (owner () ? FD_OOB : 0)))
{
do
{
@ -833,7 +849,7 @@ fhandler_socket::recvfrom (void *ptr, size_t len, int flags,
while (res == SOCKET_ERROR
&& WSAGetLastError () == WSAEWOULDBLOCK
&& !closed ()
&& !(res = wait (evt)));
&& !(res = wait (evt, flags)));
release (evt);
}
}
@ -947,7 +963,7 @@ fhandler_socket::recvmsg (struct msghdr *msg, int flags, ssize_t tot)
else
{
HANDLE evt;
if (prepare (evt, FD_CLOSE | ((flags & MSG_OOB) ? FD_OOB : FD_READ)))
if (prepare (evt, FD_CLOSE | FD_READ | (owner () ? FD_OOB : 0)))
{
do
{
@ -958,7 +974,7 @@ fhandler_socket::recvmsg (struct msghdr *msg, int flags, ssize_t tot)
while (res == SOCKET_ERROR
&& WSAGetLastError () == WSAEWOULDBLOCK
&& !closed ()
&& !(res = wait (evt)));
&& !(res = wait (evt, flags)));
release (evt);
}
}
@ -1024,7 +1040,7 @@ fhandler_socket::sendto (const void *ptr, size_t len, int flags,
else
{
HANDLE evt;
if (prepare (evt, FD_CLOSE | FD_WRITE))
if (prepare (evt, FD_CLOSE | FD_WRITE | (owner () ? FD_OOB : 0)))
{
do
{
@ -1035,7 +1051,7 @@ fhandler_socket::sendto (const void *ptr, size_t len, int flags,
}
while (res == SOCKET_ERROR
&& WSAGetLastError () == WSAEWOULDBLOCK
&& !(res = wait (evt))
&& !(res = wait (evt, 0))
&& !closed ());
release (evt);
}
@ -1154,7 +1170,7 @@ fhandler_socket::sendmsg (const struct msghdr *msg, int flags, ssize_t tot)
else
{
HANDLE evt;
if (prepare (evt, FD_CLOSE | FD_WRITE))
if (prepare (evt, FD_CLOSE | FD_WRITE | (owner () ? FD_OOB : 0)))
{
do
{
@ -1165,7 +1181,7 @@ fhandler_socket::sendmsg (const struct msghdr *msg, int flags, ssize_t tot)
}
while (res == SOCKET_ERROR
&& WSAGetLastError () == WSAEWOULDBLOCK
&& !(res = wait (evt))
&& !(res = wait (evt, 0))
&& !closed ());
release (evt);
}
@ -1402,6 +1418,14 @@ fhandler_socket::fcntl (int cmd, void *arg)
switch (cmd)
{
case F_SETOWN:
{
/* Urgh! Bad hack! */
pid_t pid = (pid_t) arg;
owner (pid == getpid ());
debug_printf ("owner set to %d", owner ());
}
break;
case F_SETFL:
{
/* Carefully test for the O_NONBLOCK or deprecated OLD_O_NDELAY flag.