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Partially revert "GSocket: Fix race conditions on Win32 if multiple threads are waiting on conditions for the same socket"

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This partially reverts commit 799f8dcd46fb40ea206d9f1b5468db62cc00a72e.
This patch seems to break the writability status of the server socket: once
somebody writes to it with success, then it reports it is not writable
anymore. Also, when the client socket has the flag FD_CONNECT set once,
it is never cleared and then it reports it is always writable, also when
it is not.
This commit is contained in:
Silvio Lazzeretti 2018-12-11 14:15:24 +01:00
parent ac0706aad0
commit 9e89749e52
1 changed files with 21 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
gio/gsocket.c
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@ -2711,8 +2711,6 @@ g_socket_accept (GSocket *socket,
while (TRUE)
{
win32_unset_event_mask (socket, FD_ACCEPT);
if ((ret = accept (socket->priv->fd, NULL, 0)) < 0)
{
int errsv = get_socket_errno ();
@ -2727,6 +2725,8 @@ g_socket_accept (GSocket *socket,
errsv == EAGAIN)
#endif
{
win32_unset_event_mask (socket, FD_ACCEPT);
if (socket->priv->blocking)
{
if (!g_socket_condition_wait (socket,
@ -2743,6 +2743,8 @@ g_socket_accept (GSocket *socket,
break;
}
win32_unset_event_mask (socket, FD_ACCEPT);
#ifdef G_OS_WIN32
{
/* The socket inherits the accepting sockets event mask and even object,
@ -2834,8 +2836,6 @@ g_socket_connect (GSocket *socket,
while (1)
{
win32_unset_event_mask (socket, FD_CONNECT);
if (connect (socket->priv->fd, &buffer.sa,
g_socket_address_get_native_size (address)) < 0)
{
@ -2850,6 +2850,8 @@ g_socket_connect (GSocket *socket,
if (errsv == WSAEWOULDBLOCK)
#endif
{
win32_unset_event_mask (socket, FD_CONNECT);
if (socket->priv->blocking)
{
if (g_socket_condition_wait (socket, G_IO_OUT, cancellable, error))
@ -2875,6 +2877,8 @@ g_socket_connect (GSocket *socket,
break;
}
win32_unset_event_mask (socket, FD_CONNECT);
socket->priv->connected_read = TRUE;
socket->priv->connected_write = TRUE;
@ -3068,8 +3072,6 @@ g_socket_receive_with_timeout (GSocket *socket,
while (1)
{
win32_unset_event_mask (socket, FD_READ);
if ((ret = recv (socket->priv->fd, buffer, size, 0)) < 0)
{
int errsv = get_socket_errno ();
@ -3084,6 +3086,8 @@ g_socket_receive_with_timeout (GSocket *socket,
errsv == EAGAIN)
#endif
{
win32_unset_event_mask (socket, FD_READ);
if (timeout != 0)
{
if (!block_on_timeout (socket, G_IO_IN, timeout, start_time,
@ -3094,10 +3098,14 @@ g_socket_receive_with_timeout (GSocket *socket,
}
}
win32_unset_event_mask (socket, FD_READ);
socket_set_error_lazy (error, errsv, _("Error receiving data: %s"));
return -1;
}
win32_unset_event_mask (socket, FD_READ);
break;
}
@ -3263,8 +3271,6 @@ g_socket_send_with_timeout (GSocket *socket,
while (1)
{
win32_unset_event_mask (socket, FD_WRITE);
if ((ret = send (socket->priv->fd, (const char *)buffer, size, G_SOCKET_DEFAULT_SEND_FLAGS)) < 0)
{
int errsv = get_socket_errno ();
@ -3279,6 +3285,8 @@ g_socket_send_with_timeout (GSocket *socket,
errsv == EAGAIN)
#endif
{
win32_unset_event_mask (socket, FD_WRITE);
if (timeout != 0)
{
if (!block_on_timeout (socket, G_IO_OUT, timeout, start_time,
@ -4755,8 +4763,6 @@ g_socket_send_message_with_timeout (GSocket *socket,
while (1)
{
win32_unset_event_mask (socket, FD_WRITE);
if (address)
result = WSASendTo (socket->priv->fd,
bufs, num_vectors,
@ -4778,6 +4784,8 @@ g_socket_send_message_with_timeout (GSocket *socket,
if (errsv == WSAEWOULDBLOCK)
{
win32_unset_event_mask (socket, FD_WRITE);
if (timeout != 0)
{
if (!block_on_timeout (socket, G_IO_OUT, timeout,
@ -5225,8 +5233,6 @@ g_socket_receive_message_with_timeout (GSocket *socket,
/* do it */
while (1)
{
win32_unset_event_mask (socket, FD_READ);
addrlen = sizeof addr;
if (address)
result = WSARecvFrom (socket->priv->fd,
@ -5248,6 +5254,8 @@ g_socket_receive_message_with_timeout (GSocket *socket,
if (errsv == WSAEWOULDBLOCK)
{
win32_unset_event_mask (socket, FD_READ);
if (timeout != 0)
{
if (!block_on_timeout (socket, G_IO_IN, timeout,
@ -5261,6 +5269,7 @@ g_socket_receive_message_with_timeout (GSocket *socket,
socket_set_error_lazy (error, errsv, _("Error receiving message: %s"));
return -1;
}
win32_unset_event_mask (socket, FD_READ);
break;
}