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select: change it to be more readable, avoid a spurious compiler warning.

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svn path=/trunk/; revision=43303
This commit is contained in:
Dmitry Gorbachev 2009-10-05 14:13:15 +00:00
parent 9c974bb786
commit 6c43b7b64f
1 changed files with 56 additions and 59 deletions
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115
reactos/dll/win32/ws2_32_new/src/select.c
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@ -48,72 +48,69 @@ select(IN INT s,
PWSSOCKET Socket;
INT Status;
INT ErrorCode;
BOOL Found = FALSE;
SOCKET Handle;
LPWSPSELECT WSPSelect;
DPRINT("select: %lx %p %p %p %p\n", s, readfds, writefds, exceptfds, timeout);
#if defined(__GNUC__) && \
(__GNUC__ * 100 + __GNUC_MINOR__ == 404)
/* Silence incorrect GCC 4.4.x warning */
Handle = 0;
#endif
/* Check for WSAStartup */
if ((ErrorCode = WsQuickProlog()) == ERROR_SUCCESS)
ErrorCode = WsQuickProlog();
if (ErrorCode != ERROR_SUCCESS)
{
/* Use the first Socket from the first valid set */
if (readfds && readfds->fd_count)
{
Handle = readfds->fd_array[0];
Found = TRUE;
}
if (!Found && writefds && writefds->fd_count)
{
Handle = writefds->fd_array[0];
Found = TRUE;
}
if (!Found && exceptfds && exceptfds->fd_count)
{
Handle = exceptfds->fd_array[0];
Found = TRUE;
}
/* Make sure we found one */
if (Found)
{
/* Get the Socket Context */
if ((Socket = WsSockGetSocket(Handle)))
{
/* Make the call */
Status = Socket->Provider->Service.lpWSPSelect(s,
readfds,
writefds,
exceptfds,
(struct timeval *)timeout,
&ErrorCode);
/* Deference the Socket Context */
WsSockDereference(Socket);
/* Return Provider Value */
if (Status != SOCKET_ERROR) return Status;
/* If everything seemed fine, then the WSP call failed itself */
if (ErrorCode == NO_ERROR) ErrorCode = WSASYSCALLFAILURE;
}
else
{
/* No Socket Context Found */
ErrorCode = WSAENOTSOCK;
}
}
else
{
/* Invalid handles */
ErrorCode = WSAEINVAL;
}
SetLastError(ErrorCode);
return SOCKET_ERROR;
}
/* Return with an Error */
/* Use the first Socket from the first valid set */
if (readfds && readfds->fd_count)
{
Handle = readfds->fd_array[0];
}
else if (writefds && writefds->fd_count)
{
Handle = writefds->fd_array[0];
}
else if (exceptfds && exceptfds->fd_count)
{
Handle = exceptfds->fd_array[0];
}
else
{
/* Invalid handles */
SetLastError(WSAEINVAL);
return SOCKET_ERROR;
}
/* Get the Socket Context */
Socket = WsSockGetSocket(Handle);
if (!Socket)
{
/* No Socket Context Found */
SetLastError(WSAENOTSOCK);
return SOCKET_ERROR;
}
/* Get the select procedure */
WSPSelect = Socket->Provider->Service.lpWSPSelect;
/* Make the call */
Status = WSPSelect(s, readfds, writefds, exceptfds, (struct timeval *)timeout,
&ErrorCode);
/* Deference the Socket Context */
WsSockDereference(Socket);
/* Return Provider Value */
if (Status != SOCKET_ERROR)
return Status;
/* If everything seemed fine, then the WSP call failed itself */
if (ErrorCode == NO_ERROR)
ErrorCode = WSASYSCALLFAILURE;
/* Return with an error */
SetLastError(ErrorCode);
return SOCKET_ERROR;
}